2004 Car Audio Trend
After a year of fierce competition in 2003, car audio giants have come out with their new products at the end of the year. Car audio enthusiasts may wish to follow our "sound booth" to preview the products of major companies this year.
Pioneer Pioneer
The rapid growth of the Chinese automotive market in 2003 has led to the simultaneous growth of related industries. According to statistics, the growth rate of the car audio industry even surpasses that of vehicles. Among them, Pioneer's mainframe sales in 2002 had doubled, while sales in 2003 doubled. Due to the broad market potential of China, Pioneer will continue to increase its product launches to China in 2004. New products will be introduced from the host, AV AV system, and speakers.
On the host side, Pioneer will continue to roll out in high, medium, and low grades. Due to accepting distributors' recommendations, most of the Pioneer machines introduced in 2004 use dark backplanes (a small portion of silver gray), and P2650 and above. The host uses a pop-up volume knob, and all the mainframes use stainless steel rings.
DEH-P2650 (Single Disc CD Host: Playable CD/Radio)
CD-R/RW playback
EEQ (Simple EQ)
5 Mode Preset Equalizer
1 mode custom preset equalizer
EQ audio source memory
3-channel parametric equalizer
3 mode loudness (optional)
FIE (Front Speaker Enhancer) (optional)
Pop-up volume knob
RAC front output: front seat
Third generation super digital tuner
Can connect to CD change box
DEH-P4650 (MP3, WMA Host: Playable MP3/WMA/CD/Radio)
CD-R/RW Play MP3 Playback with ID3 Tag
WAV file playback (Windows Media TM Audio)
BMX (Bitmetric equalizer improves the sound quality of compressed files)
EEQ (with P2650)
Pop-up volume knob (with P2650)
DEH-P5650 (MP3, WMA Host: Playable MP3/WMA/CD/Radio)
CD-R/RW Play MP3 Playback with ID3 Tag
WAV file playback
BMX
EEQ
EQ-EX
SFEQ (Audio Position Equalizer)
Two-way divider (high-pass filter, low-pass filter all the way)
Other with the DEH-P4650
Pop-up volume knob direct subwoofer drive system
2 sets of RAC pre-output: optional (front seat + sub bass / front seat + not disappear)
Electric Balance Indication 3rd Generation Super Digital Tuner Can Connect CD Change Box
Speaker series
In 2004, the TS-G series paid special attention to the design of the dust cover, and the power of the speaker also improved.
Kenwood
At the end of December 2003, Kenwood demonstrated the products that they pushed this year. Surprisingly, Kenwood is more optimistic about China's AVN (Vehicle Acoustic Navigation System) in 2004 and launched two AVNs, they are AVN-M2670P and AVN-2675. The former uses an embedded monitor while the latter uses an external type. Kenwood not only continued to strengthen the audio and video functions on these two AVNs, but also enhanced its navigation capabilities. The functions of the newer Chinese navigation systems that have recently been seen have already been covered.
Compared with the recently seen car navigation system, it has more features of the following features. Kenwood's ANV system is more detailed in the map display. The scale is from 50 meters to 200 kilometers and is divided into 13 levels, so that the search from the detail to the scope can be achieved. At the same time, on the display of the map, the display mode of north-north south can be selected or the direction of the front can be used as the upper display mode. If needed, two maps can be displayed on one screen.
Other common features of AVN are also available on Kenwood's AVN system, including touch screens, peripheral settings (displaying 5 special settings such as hotels and restaurants), Chinese character input and retrieval, and special search (specific locations, telephones, etc.) Address), automatically calculate the route and estimated travel time, automatically rearrange routes, etc. Just did not see the recent imitation 3D features.
New knowledge with safety peers
Anyone familiar with the “Car Race Guide†section will certainly know that we have publicized tire use and maintenance knowledge more than once in this column, especially for tire inflation caused by abnormal tire pressure has been reported many times, but I believe that There are only a few friends who regularly check the tire pressure, because it is very difficult for the author to “hold the tire pressure†on his own. The time is tight and his busy work is one of the reasons. The main thing is everyone. There is a kind of fear and luck. Just look at the tires before you hit the road. As everyone knows, with the appearance of the tire, it is impossible to see whether the tire pressure is normal or not.
In order to reduce the traffic accidents caused by tyre punctures, and to promptly and accurately alert the driver of abnormalities in tire pressure, it is reported that the United States will impose a tire pressure monitoring device in 2005, when all models sold on the US market Tire pressure monitoring devices will have to be installed or they cannot be sold. If this bill is implemented, it will be another vehicle safety device that has been legally enforced after the safety belt and airbag.
In China, we have test-drive vehicles with tire pressure monitoring devices, but they are all imported high-end cars. The tire monitoring devices are also produced overseas. The Guangzhou auto show also saw a tire pressure monitoring device made by a domestic manufacturer. Unfortunately, its core component, the tire pressure sensor, uses a mechanical air pressure switch (the sensor is connected to the tire valve core and detects the spring pressure. To detect the air pressure inside the tire, the accuracy and reliability of this sensor is poor. When we focused on collecting data on tire pressure monitoring devices from domestic manufacturers, a coincidence of opportunity led us to meet with Zhu Xiaosheng, the chief engineer engaged in the development of this area. What's surprising is that the tire pressure monitoring system he developed can not only Accurately detect the tire pressure, and combine the detection of tire temperature, rapid deceleration of the car (the main reason for the rear-end collision), mechanical failure and voice alarm system and call it: automotive tires, machines, emergency deceleration failure warning system. Since we have not heard of similar devices at home and abroad, we report it as "new knowledge, new knowledge," and it is worthwhile to note that this is one of the few technologies in this column.
The system is composed of host computer and extensions responsible for various signal acquisition. The host is built in the car and can use 12V power supply. The host and extensions use wireless high-speed code transmission. Because each extension has high transmission frequency, it takes short time to occupy the channel. Therefore, there is less occurrence of the same-frequency interference, and in the event of the occurrence of the same frequency interference, the host also has a built-in frequency alarm program.
For the tires, the system has four extensions responsible for tire signal acquisition built into the tires. The tire pressure signal is collected using an air pressure sensor. Its accuracy has reached 1 PSI (pressure unit), and the temperature is also loaded on the extension board. Sensor, when the tire pressure is higher than 1/7 of the normal value, or lower than 1/5 of the normal value, the tire temperature is too high (more than 80 °C), the extension will send a signal to the host, the host is corresponding to the driver Voice warning.
The acceleration sensor with sense pole deceleration is built in the host. When the deceleration of the car exceeds 5.6m/s2, the host will give a voice alarm. This function is mainly applied to multiple vehicles equipped with this system. If there is an emergency brake in front of the car, the system can send an early warning signal to the rear car. The host behind the car can immediately give an alarm, which is easy to imagine, which is very useful for preventing rear-end collision. The system also considers the problem of rear-end collision when only a single vehicle uses the system. The system is equipped with a laser high-position brake light that penetrates very quickly. In the event of an emergency brake, the brake light can emit a strong light warning behind the vehicle.
At the time of driving, there is a phenomenon that is almost always happening. All cars are equipped with a handbrake warning light, but all of them must have forgotten the handbrake experience. This shows that it is not enough to rely on the indicator light to alarm, and the voice alarm is At this time shows a great advantage. This system's consideration for this aspect undoubtedly enhances its practicability. By connecting with various sensors in the car, the host can have problems such as battery failure, excessive water temperature, handbrake release, fuel shortage, lack of oil, or even lack of door. Turn off the voice alarm.
In the front, we talked about the advantages of this system. Because it is a new technology, there are drawbacks that are inevitable. For example, this system can accept polar deceleration signals and alarms. If the alarms include both vehicles in front of them, vehicles on both sides and even behind vehicles, then the pole deceleration alarms on both sides and behind vehicles are meaningless. For this problem Zhu always explained that: technically it can solve this problem, but to determine the location of the problem requires the use of GPS systems, if the GPS system installed on the system, then its cost will greatly increase, the price has greatly increased, If the price is too high, it will be difficult to achieve the goal of popularizing and promoting this system.
Now that the functional prototype of this system has been developed to the second generation, the size of the second-generation mainframe will be greatly reduced compared to the first generation, and product testing and certification work will also be near the end. If the smooth estimate is seen before and after spring, This system is listed. For such a useful system, we are naturally optimistic about his market performance.
Refit world
Through the street, there are always some cars that catch your sight. Maybe they are not Mercedes Benz but just an Alto, but with colorful stickers, bright aluminum alloy wheels, and Alto with a chromed exhaust pipe make the driver look arrogant. This is the charm of conversion, he can make your car stand out from mediocrity. But is the meaning of conversion just a simple car beauty? What are the performance modifications and performance modifications often mentioned abroad? With these questions, we visited the Hanshide auto boutiques that specialize in Audi and Volkswagen series models. They are agents of the famous German modification company ABT.
In the traditional impression, most of the conversion plants are understood as the appearance of a repair shop: there will be an axle and full of oily ground, and there will be shelves filled with lubricants and small parts. However, in the ABT shop, we only saw glass windows with computer chips and ABT logos. According to the owner's introduction, foreign professional companies (such as AMG, Brabus, and ABT) that have done relatively well in foreign countries have already formed a culture of their own, and they are more of a major propaganda culture than actual operations in stores. Of course there is a need to make modifications. They can also provide professional venues.
Professional conversion companies are generally aimed at a brand or a series of models, such as AMG and Brabus for the Mercedes-Benz brand and ABT is for Volkswagen's Audi and Volkswagen brands. Technically speaking, a single brand has the same or similar mechanical structure, and the code and interface of the driving computer will be similar. Having a set of equipment can basically be qualified for modification work. At the same time, only a single brand can be modified to provide targeted modification parts, and the quality of the modification can therefore also be guaranteed.
Performance modification generally includes modifications to the vehicle's power performance, braking performance, and handling and stability performance. The actual operation is the modification of the engine and the chassis. The simpler way to modify the engine is to replace the crested plug and the intake and exhaust pipes. The more complicated one is to modify the driving computer parameters. Of course, there are also exaggerated methods such as slamming (enlarging the cylinder bore and increasing engine displacement). The general method for the chassis includes: changing the lightweight hub to reduce the unsprung mass, replacing the tire with a small flatness to improve the adhesion, replacing the large brake disc, increasing the anti-roll bar, etc. These modifications mainly aim at the stable operation of the car at high speed The safety of braking and braking is carried out, but if it is an off-road vehicle modification, emphasis is placed on rebuilding the suspension.
For the car's performance modification customers will generally pay more attention to dynamic aspects, the most direct and effective method is to change the driving computer program, whether to change the driving computer has become an indicator of the difference between the conversion is a professional, the general maintenance factory will not move the car The trip computer, as long as the computer has a problem will be replaced as a whole. The host here is proud to introduce us to the three ways in which they can change their driving computer.
The first is to connect the computer directly to change the fuel supply and ignition procedures in the computer. Use a data cable to directly connect the car driving computer and your own computer. Since the data cable is connected with a special tool, you can directly read, decode, and write code on the driving computer so that you can store the new information stored in your computer. The oil ignition program is injected into the trip computer. For example, the Bollywood series has seven kinds of trip computers and five kinds of programs. As long as the five kinds of procedures are complied with, it is possible to use this method to change the trip computer.
The second is to disassemble the computer chip and then inject a new program. Use this method if you do not have a suitable port to connect to your computer. Remove the chip containing the fuel ignition program from the traveling computer and read it using a proprietary reader. If the stored program, vehicle data, and computer number match the known ones, then a new program can be injected immediately. However, if it is an unknown model and program, then this information will be sent to the foreign headquarters, and they will rewrite new procedures based on their information. Contact with E-mail, this process takes about an hour or so. After getting the new program, a new chip can be burned and connected to the trip computer through a corner adapter, thus achieving the purpose of modification.
The third method is external control. If both methods fail (main Japanese models and American Cherokee, they have their own code), then this method can also be used to change the car computer. This is the control line drawn from the ignition coil, connected to the external control computer, according to the computer stored power and torque curve, tune to a more satisfactory value, this process depends on experience.
When the owner talked about the ABT refitting concept, he said: Refitting can improve the performance of the car, but it is definitely within the scope of safety. Audi can't be converted into Mercedes-Benz. It can't be changed into Ferrari. Therefore, in the process of refitting, it is necessary to avoid touching on the mechanical structure of the car, and the practices that hinder security cannot be done. Even if the performance of the refitted parts is better, they will encounter matching problems. In contrast, from the perspective of transforming the driving brain, the modified parts are the most reliable for performance improvement and car safety.
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