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How much do you know about in car multimedia?

How much do you know about in car multimedia? 0

But for " have you used the car multimedia feature?"This is a very real problem, I believe that many owners have driven their own cars for several years, some functions are almost not touched. Take a typical example around: a friend made money to buy his father a top Cadillac ATS-L, the car multimedia is really fully functional, but the old man's mobile phone function can not play, let alone more than a big screen in the car, and my friend's father is an old driver, reversing video to see. Like this situation is everywhere, do not think that they play to understand the car multimedia, in fact, some functions you may not be used or will use.

Speaking of which, today I would like to talk about some common car multimedia functions:

Bluetooth phone function

Driving on the phone is a very taboo thing, which is also strictly prohibited by the traffic laws and regulations, so the car Bluetooth phone function was born suddenly. But when it comes to its practical, bluetooth phone a lot of people do not recognize, probably because the phone also has hands-free function and voice dialing function, think even if the phone has these functions, but also need the steering wheel and eye shift, there is still a big safe hidden trouble, so advise you to drive the phone or try to use bluetooth phone and other functions.

However, sometimes I still feel a little silly to make a phone call with the voice dialing function of the car phone.

Car-mounted video function

In fact, the commonly used multimedia functions are also very few, and those that are not commonly used, think up inevitably make people want to laugh. If the most useless car multimedia is the video feature. Why say so, first of all, the driver is very dangerous to drive the phone, let alone distracted to see a movie, if let the co-driver watch, then you are the screen installed in front of the co-pilot, not to mention the back row, such a small screen stretched neck may not be clear.

Of course, it can not be generalized, after all, many luxury cars in front of each seat for entertainment, but really did not experience the feeling of sitting in the back of the car to watch the movie, it is really poor to limit their imagination.

Of course, there are many in-board multimedia functions that are almost unusable, such as Internet access function, intelligent dialogue, fleet networking function and so on. While carmakers struggle to enrich in-car multimedia features, they still beat the pace of smartphones. Nowadays, mobile phones can be used as an alternative to car multimedia and are more functional and more convenient to use.

The functions of the mobile phone almost cover all the functions of the car multimedia, even better than the original multimedia function. For example, the navigation function of the mobile phone is not only more accurate than the original navigation, but also more convenient to update. The most important thing is that the data is updated in real time. Therefore, many car owners choose mobile phones instead of the car multimedia system, just need a car mobile phone bracket can do it.

If you have to say that the mobile phone is not as good as the car multimedia system, maybe the screen is too small. Many car companies also take a fancy to the multimedia system display size irreplaceable position, and wanton to do large display.

  • Qiang Ling
There are so many in-car multimedia features, but what do you often use them?

There are so many in-car multimedia features, but what do you often use them? 0

In the past, when choosing a car, in addition to considering the appearance, performance, price and other factors, there is one thing that will always be ignored by people and lead to regret after buying a car, that is the car multimedia system. These days, if you don't have a decent looking LCD in your car, you're embarrassed to put someone in your car.

The display screen located in the most prominent position on the center console is an important part of the on-board multimedia system, so what is the on-board multimedia system? To put it bluntly is the combination of video entertainment system and auxiliary function, it includes music and video playback, bluetooth phone, car WIFI function, GPS navigation, reversing image, etc., high-end models even have some auxiliary driving function, compared with the past "older" car CD or radio entertainment functions, can be said to be the real sense is multimedia.

How many of these complex functions can be used more often? It is estimated that the car companies should say "tube it is not used, anyway I have". Do not think that you play to understand the multimedia of the car, in fact, some functions you may not often used or will use.

Speaking of which, today I would like to talk about some common car multimedia functions:

Music function

Car music playback function is probably one of the most common multimedia functions, and also one of the most original car media. Driving the beloved car, listening to the favorite song, is the most can experience the fun of driving a thing. This is perhaps the most common feature for car owners. Even if you don't like listening to music, music may be the best way to ease the awkward atmosphere when you sit with an unfamiliar person or a new ticket.

Car music function from the original small memory, poor sound quality to now can be directly downloaded online and can store a large number of songs have experienced a great change, coupled with high quality car audio, can always let today's car owners enjoy one's arbitrary music feast, therefore, the music function is basically recognized by the majority of car owners.

GPS navigation function

Personally, the GPS navigation function is another common multimedia in addition to the car music function. Maybe I may not feel the familiar road section. If you make a long trip, the navigation function on the car will become an essential thing. Especially like many women drivers, a kilometer away, must drive navigation driving.

Of course, the most can understand the importance of navigation or those who often out of the distance to run high speed owners, no navigation in the unfamiliar highway is a nightmare, accidentally run wrong ramp have to walk dozens of kilometers of oil.

Since navigation is so important, you can only be installed for cars that don't have this feature. Nowadays, there are many styles of external car navigation on the market, but most of them choose to be installed in the central control of the suction cup type navigator, which more or less blocks the driver's line of sight, there are certain safety risks, and the original factory navigation does not have these troubles, it is more convenient to use.

Reverse image

Car reversing image can be said to be the magic weapon of the old and new drivers parking, it will not only completely display the blind area of the rear of the central control LCD screen, Everyone has everyone's preferences, and the use of the car is also different, no matter you are a mobile phone multimedia party or a car multimedia party, it is inevitable to use many functions in the multimedia, so what do you often use?

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Car mp5 player installation method-Car mp5 player instructions

Car mp5 player installation method-Car mp5 player instructions 0

some is not so much that it is the car screen, rather it is a "tablet computer", which can have a built-in Android market, the owner simply step into the page, the device is simply eager to use, such as the player. but there are a lot of software do not care about the car version and, and to PAD version, HD version, is in the user experience will be very high, when using can also encounter many problems.and want to browse the player to the car screen do not care can not, or to ensure the prerequisite.

The screen installed behind also accepts the Android system. Even if you can not "use the mall" and the environment, you can still earn ROOT permission, and then simply install the player and software.

The-mp5 player video format can be played by connecting to a Bluetooth external player

It needs to be closed in the Bluetooth Settings, and then paired at the Bluetooth interface point to make the Bluetooth enter the pairing mode, but many manufacturers enter the pairing mode only after the power up.

After the pairing, connect the device. Car Bluetooth is connected to the Bluetooth speaker.In addition, one function is to connect to the external Bluetooth broadcasting equipment to broadcast.In the case of damage to the on-board player, it can be played simultaneously through the connected Bluetooth external player, and the player and volume can also be complicated through this method.

In the case of damage to the on-board player, the player can be built by the connected Bluetooth external player, and the volume of the player can be complicated in some way.

Car Bluetooth connection to car listening to music method-car mp5 player

After successful pairing, connect the device together. Car Bluetooth why mutually connected Bluetooth speaker.

In addition, one function is to be connected to the external load of Bluetooth broadcasting equipment to make a broadcast.In the case that the on-board player is damaged, the player can be built by the connected Bluetooth external player, and the volume of the player can also be complicated through this method.

In the case of broken car player, the player can be played by connecting the Bluetooth external player, and the player and volume can also be complicated by this method. the car Bluetooth is not connected to the car to play games. Car Bluetooth connected car to play games and methods.The mass-car Bluetooth password is usually what. The Volkswagen car Bluetooth password is generally "0000" or "1111".

How to Connect Bluetooth Speakers to Car Bluetooth - How to Install a Car Video Player

The name and pairing password will be indicated on the vehicle and interface.The WiFi connection password is a string of English letters located below the personal hotspot interface.

Why is car Bluetooth connected to a Bluetooth speaker. Another function is the ability to connect external Bluetooth broadcasting devices for broadcasting.In the case of damage to the car player, it can be played simultaneously by connecting an external Bluetooth player, and the volume of the player can also be complicated by this method.

In case of damage to the car player, it can be played smoothly through the connected Bluetooth external player, and the player and volume can also be complicated through this method.

  • Qiang Ling
Car Multimedia Basics: How to Build an In-Car Multimedia Experience

Car Multimedia Basics: How to Build an In-Car Multimedia Experience 0

Audio, Video, and Pulling It All Together

There are three basic categories of gear you’ll need to look at: audio gear, video equipment, and media sources.Audio gear includes: head unit, speakers, amplifier, sound processor, crossovers, and headphones.Video gear includes: video head unit, flip-down screens, headrest-mounted screens, and portable screens.This article explains how to build an in-car multimedia system. Additional information covers examples of each type of gear.

Don Mason / Blend Images / Getty

There are dozens of different pieces of equipment and gear that all need to work together in car multimedia, but they all fit into three basic categories:

Audio gear: This is the traditional car stereo equipment that's been around forever. You need a head unit and speakers at a bare minimum, and the head unit needs to be able to handle video inputs.

Video equipment: The video component of an in-car multimedia system can take a lot of different forms. Common implementations include video head units, headrest-mounted screens, and ceiling-mounted screens.

Media sources: An in-car multimedia system can rely entirely on physical media, like DVDs and Blu-ray discs, you can go digital, or a hybrid of the two.

Car Audio Multimedia Components

The audio portion of an in-car multimedia system typically consists of the existing sound system, though there are a couple differences. Some of the audio components that are typically found in car multimedia systems include:

Head unit:

This is the heart of the system, and it controls everything else. You've probably heard the term car stereo used more often, but the component in your dash that you use to control your car stereo system is actually the head unit.


Great speakers are also key, but the speakers in a multimedia system don't have to be any different from the speakers in a regular car audio system.


Every in-car multimedia system, and every car audio system in general, needs an amplifier. Most head units have an amp built right in, but higher-end systems use one or more external amps.

Sound processor:

This is a component found in higher-end car audio systems, and it can also come in handy if you want your multimedia system to sound as good as possible.


This is another component that's found in higher-end car audio systems that's useful in improving sound quality.


Most car audio systems rely entirely on speakers, but multimedia systems can include headphones as well. This is a really useful feature if you have kids.

Headphones can be found in regular car audio systems, but they are much more commonly used in conjunction with car multimedia. Wired headphones require a headphone jack in the head unit, video player, or elsewhere, while wireless headphones can make use of IR or RF signals.

Most of these audio components are very similar to those found in traditional car audio systems, with a few exceptions like the head unit. While a regular car stereo can be used in a multimedia setup, video head units are much better suited to the purpose.

Car Video Multimedia Components

Every car multimedia system needs at least one video component, but they can also have a lot more than that. Some of the more common car video multimedia components include:

Video head units:

This is the easiest way to turn a car audio system into an in-car multimedia system. Double DIN video head units have the biggest screens by default, but some single DIN units also have pretty big flip-out screens.

Flip-down screens:

These displays mount to the ceiling and flip down during use. They're mainly useful to allow all of the rear passengers to watch the same video all at once.

Headrest-mounted screens:

These displays mount on, or in, the driver and passenger headrests. They allow the rear passengers to watch the same video on both screens, or different videos if you have multiple video sources.

Portable screens:

These aren't as highly integrated into the multimedia system, but they're more convenient. Some portable screens can be plugged into an in-car multimedia system and then removed and used elsewhere for convenience. You can also use a tablet depending on the system you're trying to build.

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BMW’s Stereo Camera System To Serve Multiple Purposes

BMW’s Stereo Camera System To Serve Multiple Purposes 0


Mirror-mounted cameras bring car-style tech to motorcycles.

With radar systems already spreading from cars to motorcycles, it was only a matter of time before camera systems would join them. BMW has filed a patent application describing a stereo camera setup for future motorcycles.

This year, Kawasaki has already led the charge by introducing a front camera on its tech-packed, supercharged H2 SX, allowing it to adopt an automatic-high-beam system by monitoring the headlights of oncoming vehicles. It switches from high to low beam automatically when another vehicle approaches, avoiding dazzling other road users, if the system is engaged.

However, that’s very much a “stage-one setup”—cars with auto-dimming lights first hit the market, albeit with very primitive versions of the idea, back in the 1950s. BMW’s new patent application hints at the ways front-mounted cameras can offer far more in terms of tech.

In the proposed patent, a pair of forward-facing cameras will be installed in the mirrors, one on each side.

Firstly, the BMW system is stereo, with one camera module mounted in the front of each mirror housing. While the patent document illustrates the design on a K 1600 B, by using mirrors as the camera mounts, BMW is making it as easy as possible to integrate the system across multiple models without requiring redesigned bodywork to suit. The stereo cameras also offer a wider scope and have an ability to judge distances and estimate the bike’s position three dimensionally on the road.

Although BMW’s document says the idea is, like the Kawasaki one, intended to allow the use of auto-dipping headlights, it also indicates that the firm is considering the adoption of more complex tech. Notably, it refers to using the system with “matrix” headlights, already used on some cars, which have the ability to mask parts of the headlight beam to give a local dimming effect. That means it can cut the light only in the part that would be hitting an oncoming vehicle, allowing you to keep the headlight’s bright beam on without blinding other drivers. On a bike, that system is complicated further by the fact you lean in corners, but the three-dimensional detection from the dual cameras helps work around that issue.

Audi uses Digital Matrix Lights that can mask part of the beam to oncoming drivers, while still illuminating the rest of the road.

The cameras aren’t limited to assisting with headlights either. The patent application also suggests they can be used for road sign and traffic light recognition, as well as for lane assist, adaptive cruise control, and collision warning. Although BMW already uses the Bosch radar system on some bikes for adaptive cruise, camera tech actually has advantages in some areas. For instance, when it comes to collision warning or auto-braking systems, cameras’ ability to recognize brake lights on vehicles in front can give more advanced warning than a radar alone.

The low cost of cameras can’t be ignored either. While they’re still unusual on bikes in Western markets, front and rear cameras are becoming increasingly common on Chinese-made bikes, where the technology is particularly cheap. Several of China’s new, large-capacity bikes including the Benelli 1200GT and the Norton-engined, 650cc Zongshen Cyclone RX6 come with cameras at both ends as standard. 

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Car breath tester: lock drunk driving, so that safe travel always online!

Car breath tester: lock drunk driving, so that safe travel always online! 0

Death caused by drunk driving is one of the main causes of death caused in traffic accidents. At present, the traffic management departments of the world to the investigation of drunk driving mainly rely on the traffic police card, patrol interception can be vehicles or others to report. These methods have problems such as low inspection efficiency and over-reliance on the law enforcement experience of the traffic police, which cannot fully prevent the occurrence of drunk driving.

In order to prevent the occurrence of drunk driving more efficiently and comprehensively, the on-board alcohol detection device has attracted the attention of the regulatory authorities and the industry. Commonly used abroad is the alcohol detection and engine interlocking device (alcohol lock), which can realize the function of unable to start the engine when the driver's breath alcohol detection exceeds the standard. At present, the chain devices are rear-installed, widely used in the United States and Europe.

On 6 July 2022, EU Regulation 2019 / 2144 came into force. The regulations, since July 6,2022, automobile manufacturers have the obligation to new car factory certification, must give new models equipped with some specific equipment interface, and in July 2024, all newly registered vehicles will have to use the interface and install related equipment, in order to avoid serious accidents, which includes vehicle alcohol detection device.

In the on-board alcohol detection devices, the alcohol sensor is the key component, usually using the electrochemical principle to measure whether the driver drinks alcohol.

Electrochemical alcohol sensor has high measurement accuracy, good repeatability, good stability, strong anti-interference ability, and its working mode is diffusion type and pump suction type. When measurement, alcohol and oxygen respond to the working electrode and the electrode and release the charge to form a current. The current generated is proportional to the alcohol concentration. The level of the concentration of alcohol can be determined by measuring the current. In terms of the standardization and compliance of the transportation industry, the EU is always at the forefront, and these standards are more or less referred to by other countries. In the future, the on-board alcohol detection device is expected to become the factory standard parts of new cars

operational principle

Before the car starts, the driver must first exhale into the wireless handheld device to trigger the alcohol sensor for detection. The detection data is transmitted to the controller through the A / D converter and determine whether the alcohol concentration meets the standard through calculation. The analysis results are transmitted to the car's electronic control system through wireless signals, and if an excessive alcohol content is detected, the car will take self-locking measures to keep the car unable to start. In the process of driving, the system will also require the driver to retest, so as to prevent drunk drivers from driving.

The equipment uses advanced sensors, can identify non-human external gas, can effectively prevent the driver from using the pump jet to escape detection, with the camera to monitor the driver blowing image, to ensure that the test is the driver himself, to prevent cheating.

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Do you know anything about Head Unit?

Do you know anything about Head Unit? 0

There’s a few things you’ll want to get straight before shopping for a new headunit for your vehicle. Fitment compatibility, functionality, feature support and ergonomics should all be factored. Below we've covered the key considerations to wrap your head around before laying your hard-earned cash on a replacement.

Secondly there’s your list of need and wants. Would you like to add discrete amplification? Must you have the ability to tune into your favourite Digital Audio Broadcasting (DAB) station? Do you want to avail yourself of the added safety and convenience afforded by Apple Carplay and/or Android Auto? Would you like to make use of powerful tuning features like active crossovers, parametric equalisation and time alignment in order to enhance the clarity of your speakers, improve the imaging capabilities of your front stage and correct the phase alignment between speakers in the entire system?

Once you have defined the possibilities in terms of fitment and compatibility with your factory ancillaries along with the features and functions you desire, you should be able to narrow your selection down to a manageable list of option.

If you wanna be able to use compact discs in the car, you’ll find solutions here. If you are well past feeding physical media into your dash then a mechless Solution is for you, the single din mechless you’ll find here and double din mechless here. Perhaps you have some real estate you’d like to fill with a decent bit of screen area, or would like to create some screen area where currently there is none. Connectivity is key, especially in our increasingly connected world, so a Bluetooth enabled unit is almost certainly gonna be a dealbreaker, so you’ll like want to peruse single din bluetooth enabled unit and/or double din bluetooth Enabled units. Of course, if you want to take full advantage of the key advancements in mobile connectivity then there is no way around it, you’re gonna want to opt for a head unit supporting Apple Carplay and/or Android Auto. While most Apple Carplay and Android Auto capable head units provide excellent support of applicable apps like Apple Maps, Google Maps and Waze, and this is arguably the best way to go about equipping your vehicle with decent navigation capabilities, you might still prefer to select a head unit with standalone navigation capabilities or a unit with specialised navigation uniquely optimised to be of most use when you’re off the beaten track.

What’s the difference between single & double din head units?

DIN (German Institute for Standardisation) is an ISO (International Organization for Standardization) definition for dashboard mounted head units which measures 50x180mm. The main difference between single and double DIN head units is their size, with a double DIN head unit occupying twice the area of a single DIN slot. The larger double DIN unit offers more flexibility and scope for things like CD mechanisms and larger display panels or additional features like touchscreen functionality, whereas single DIN units are more compact and may require additional adapters for certain functionality.

Do head units affect sound quality?

While they may not be the sole factor influencing sound quality, they play a significant role and can have an impact on sound quality. Higher-end head units often have better digital-to-analog converters (DACs), more powerful built-in amplifiers, allowing for better sound reproduction. Additionally, some head units support advanced digital sound processing technologies like user configurable time alignment, parametric equalisation and active crossover networks, and playback of high-resolution audio file formats, further enhancing sound quality. However, it's important to note that other factors such as speaker quality and installation also contribute to the overall sound experience. Crap in, crap out, as they say.Can you install a head unit yourself? Automotive can Install it for you!

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Why Does My Car Radio Fuse Keep Blowing?

Why Does My Car Radio Fuse Keep Blowing? 0

Incorrectly installed fuses, incorrect fuse types, intermittent shorts and overloaded vehicular circuits can all cause frequent electrical malfunctions. If installed fuses are designed to carry less wattage than the radio requires, they will blow. Similarly, if too many electronic components are wired onto a vehicle circuit, their combined operation will cause the fuse to blow.

The cause of a blown fuse depends heavily on the electrical content of an individual vehicle. Car circuitry is dependent upon model and also upon previous repairs or electronic additions. Before beginning the repair job, it is important to ascertain which other electrical components, if any, are wired into the radio’s circuit. The combined required wattage of all electrical devices on the circuit have to be taken into account when figuring the correct fuse type.

If the correct fuse rating is installed but the circuit continues to cause the fuse to blow, an intermittent short could be to blame. Old or faulty wires with partially-missing cladding are often the culprits of a short. When two bald wires touch, a circuit may become overloaded, causing its fuse to blow.

Technicians can locate a short using an ohmmeter, a voltmeter or a multimeter. When the short it identified and fixed, the correct fuse type for the circuit will no longer blow.

Why Won’t a Car Turn Over but the Lights and Radio Work?

If a car will not turn over but the lights and radio still work, the problem is either a bad starter motor or a faulty ignition switch. A clicking noise when turning the key usually indicates a problem with the starter motor. No clicking sound and no sound from the engine can indicate a bad ignition switch. In both cases, the solution is to replace the faulty items.

There are two main reasons for a car not starting. One is lack of spark, the other is lack of fuel. Lack of spark can be caused by a dead battery, a dead starter, a faulty ignition or bad spark plugs. A lack of fuel is usually the fuel pump or problems with the EFI system. A dead battery or alternator is fairly easy to diagnose because the rest of the electronic systems will either be dead or dim. A clicking sound means the starter motor is trying to engage, but failing. No clicking sound means that it is either the ignition or the starter solenoid.

Another possibility, unique to automatic transmissions, is that the car is in a gear other than park. Most automatics will not start in any other gear except park. In that case, the lights and radio would work, but the car would not turn over.


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How to choose and use CD player for car

How to choose and use CD player for car 0

The purchase and use of CD player for car:

 CD machine currently several major brands are: Song Music, Alpai, Pioneer, Jianwu. In addition to choosing a reliable quality brand, the second is to choose their favorite songs. Then according to the model of the car to choose the choice to adapt to the CD, CCD types are very many, there are single, three, six, eight, ten, twelve and so on.

The purchase and use of automobile CD are as follows:

In addition to choosing a reliable quality brand, the second is to choose their favorite songs.

Then according to the model of the car to choose the choice to adapt to the CD, CCD types are very many, there are single, three, six, eight, ten, twelve and so on.

Single disk machine in the installation should pay attention to the horizontal installation, and to be fixed firmly, otherwise the shock absorption effect is poor when the laser head often protection, long time will make the CD machine aging.

CD machine before the installation to adjust the shock absorption direction knob, otherwise there is no shock absorption function, or even damage the CD machine, multidisk in the installation of the machine first should pay attention to the connecting line between the host and the CD machine, in order to prevent interference to be separated from the car power line, and to go to the original line.

Try to use the legitimate CD, because the copy CD disk in the production process is poor, the product often appears uneven disc surface and pit etching uneven, when playing these hidden dangers will cause the bald reading speed can not keep up with the jump point, make the sound intermittent, a long time will damage the bald head. In addition, the user should clean the hand when taking the CD, to prevent the oil stains and secretions on the hand from polluting the dish surface, and the bald head read will affect the sound quality effect. When wiping the dust on the disc surface, wipe it along the vertical direction to the track, and wiping it along the track will damage the disc.

Car cd machine disassembly tutorial?

The role of automobile cd machine: 1, used to play music, relieve driving fatigue; 2. with sound recording function, it can store, transmit or receive audio information, in the circuit of the automobile CD host, often with power amplification module, power amplify the signal input from the audio processing circuit, and then push the horn to work directly through the audio port.

The aux interface of the car Cd is an audio input and output port. General audio devices will have a formal input and output ports, but in order to prevent accidents, you will often configure several "aux" output ports. If you have special needs, such as the input and output of exceptional audio, you can use this extra port. Both in input and in output, we call it a name "aux".

USB interface belongs to the vehicle transmission line, which has the advantages of fast transmission speed, convenient use, support for hot plug, independent power supply, etc. Generally, it is the general interface of USB equipment such as U disk and MP3. The AUX interface is the audio input interface, listening to the music of these devices with the car stereo.

The AUX interface, which is an additional signal line design. At the same time, also called marshalling output, using an AUX connection line, can connect the mobile phone, car MP3 to use the car sound sound, plug into the mp3 player, mobile phone and other earphone socket. 

Just insert the AUX socket in the car at the other end. USB interface, which belongs to the on-board transmission line, has the advantages of fast transmission speed, convenient use, hot plug support, flexible connection, independent power supply, etc. It is generally a general interface of U disk and USB equipment such as MP3.

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What is the function of the air pump?

What is the function of the air pump? 0

The role of the air pump is to let the engine to send the air to the three-way catalytic converter in the cold car, so as to use the exhaust gas into the oxygen in the air to achieve secondary combustion, improve the temperature of the three-way catalytic converter, so that the three-way catalytic converter can enter the working temperature as soon as possible, reduce the harmful substances in the exhaust gas, and play a role in environmental protection.

Air pump is mainly used for pumping, sewage treatment, electroplating drum, biogas tank aeration, tunnel ventilation, etc.

air pump The "air pump", a device that removes air from an enclosed space or adds air from an enclosed space. Air pump is mainly divided into electric gas pump and manual air pump, foot air pump. Electric gas pump. The air pump powered by electricity presses the air through the power to generate air pressure.

The working principle of the air pump is: the engine drives the crankshaft of the air pump through two triangular belts, so as to drive the piston to pump, and the gas is imported into the air storage tube through the guide pipe. On the other hand, the gas storage cylinder introduces the gas in the gas storage cylinder into the pressure regulating valve fixed on the gas pump through a guide pipe, so as to control the air pressure in the gas storage cylinder. When the pressure in the storage cylinder does not reach the pressure set by the regulating valve, the gas entering the regulating valve from the reservoir cannot open the pressure in the reservoir reaches the pressure, opening the regulating valve from the reservoir and the entering pump is connected with the regulating valve Airway, and through the airway control of the air pump inlet often open, so that the air pump empty load operation, to achieve the purpose of reducing power loss, protect the air pump. When the pressure in the storage cylinder is lower than the pressure set by the regulating valve due to the loss, the valve in the regulating valve is turned back by the return spring, disconnecting the control path of the gas pump, and the gas pump starts to pump again.The secondary air pump is broken and affects what

The influence of the secondary air pump is unstable and the mixture is too thin.

details are as follows:

1. check the intake air flowmeter, there is a blockage, or the line is damaged, then will lead to mixed too thin, maintenance method is to clean the flowmeter, or use tape to repair the damaged line, serious, it will need to replace the components.

2.It is also possible that the oxygen sensor has a problem, if the oxygen sensor has carbon deposition, the normal cleaning is ok, if the sensor is seriously damaged, it is necessary to replace the oxygen sensor.

3.the engine carbon deposition is too much, then it is necessary to immediately clean the oil circuit, or add fuel additives in the tank to clean up, the nozzle and spark plug, but also to timely clean, in order not to produce a large amount of carbon deposition, the owner must regularly clean these parts.

4.the secondary air fracture, go to the 4s shop to replace the new.

5.the cathode line is wrong, go to the 4s shop to reinstall the cathode line.

6.the secondary injection valve is damaged, mainly due to insufficient closing force; debris falls between the valve seat and the gate; the valve sealing surface is not processed or damaged; need to go to 4s shop to repair the secondary injection valve.

7.the abandoned cylinder head channel is blocked, so it is recommended to open the cylinder head for cleaning.

8, the vacuum tube rupture, need to check the cooling system, or the exhaust system blockage, the vacuum pipe leakage. Replace it with a new vacuum tube.

The role of the secondary air pump, is the engine in cold car to ternary catalytic converter into the air, in order to use the exhaust gas encounter oxygen contained in the air for secondary combustion to improve the temperature of the ternary catalytic converter, can make the ternary catalytic converter temperature as soon as possible and enter the working state, can reduce the emissions of harmful substances in the exhaust gas, plays the role of environmental protection.

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What Is an MP5 player for car?

What Is an MP5 player for car? 0

An MP5 player is a digital device that can play audio and video that you have downloaded onto it. It differs from MP4 players in that the format of the files that you download does not have to be changed in order to make it work on the device.

MP5 players are devices that work digitally to play audio and video and are updated versions of MP3s and MP4s. There are some important differences compared to earlier versions. The biggest is that the MP5 player can play files without having to reformat them from RM and RMVB format, which many video are in these days. This means that one may download anything without the worry or stress of it not working properly on the device. Another important difference is that the screen is usually larger than the MP3 and MP4 players, providing the user with better video quality.

Car mp5 and Android difference (car mp5 has what strategy

Many cars now use voice control function as a selling point in the trend. In fact, from the perspective of technology application, the implementation is not complicated, and it does not need to increase the hardware cost. In fact, you just need to control the joints.

Now the car voice control function on the market is generally used to control the skylight or wiper, which does not involve the operation endangering personal safety, mainly used to improve the comfort of users and the sense of product technology. Implementation requires several components on the vehicle: voice recognition system (generally the on-board multimedia MP5), vehicle control system (BCM or PEPS) and actuator components (sunroof control module or wiper control motor).

Voice recognition systems are now quite mature, and basically monopolized by several big companies. Car multimedia MP5, in fact, you can see that it is a large screen mobile phone, voice call this operation is basically quite popular, here do not do too much explanation.

Take the skylight, you can say, "I want air."After the speech recognition system recognizes the speech, it will issue a CAN communication message to inform the vehicle control system to open the sunroof. I have written a few articles about CAN communication, and I will not discuss them here.

Vehicle control system

At this time, we needed the BCM to play the field. After receiving the CAN message sent by MP5, we found that the instruction was explained that the skylight opened. Next, we would pass this instruction to the skylight control module. The BCM and the skylight control module are generally connected by the LIN bus. That is, the BCM needs to send a LIN message to the skylight control module, informing the skylight control module to open the skylight. I have also introduced the part of LIN communication, and I will not discuss it here.

execution unit

After the instruction is handed down by the first level, the key is the response execution. After receiving the skylight control module of the LIN message to open the skylight, it is the instruction to open the skylight, which can drive the skylight control motor to open the skylight. Of course, there are some logical control details, such as receiving multiple instructions or instruction conflicts. To put it simply, there is only one executor, and commands can be received multiple, who to listen to. In general, the execution are their own itself. Who responds to, who does not respond to, who can interrupt who, there is a priority problem, even considering the skylight trap. The With the seemingly simple execution parts, the design is not necessarily really simple.

In this way, the car's voice control function seems cool, but it's actually not complicated to implement. In fact, you just need to get through the joints, and then connect the existing modules. It is mainly using the voice recognition system to recognize the control instructions, and then pass through the car bus level, and finally to the execution part response execution.

  • Qiang Ling
What is a Car Radio Replacement?

What is a Car Radio Replacement? 0

How to Choose a Car Radio Replacement

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