【正文】 了不必要的車速變化，從而節(jié)省了燃料，同時也減輕了駕駛員的負擔。 汽車巡航控制系統(tǒng)是最早開發(fā)的汽車電子控制系統(tǒng)之一。采用 VDC 系統(tǒng)后，汽車在對開路面上或彎道路面上的制動距離還可進一步縮短。 VDC 系統(tǒng)對轉向行駛的控制主要是借助于對各個車輪的制動控制和發(fā)動機功率輸出控制來實現的。雨天汽車高速轉向行駛時，常常側向滑出 ,就是地面?zhèn)认蚋街芰Σ蛔愕木壒省? 總之， ASR 由于防止了車輪的滑轉，便可最大限度地利用發(fā)動機的驅動力矩，保證汽車有足夠的縱向力、側向力和操縱力，使汽車在起動、轉向和加速過程中，在滑溜和泥濘路面上、在山區(qū)上下坡過程中都能穩(wěn)定地行駛，既保證了行車安全，減少輪胎磨損和燃油消耗，又改善了汽車的驅動性能。隨著對汽車性能要求的提高，不僅要求在制動過程中防止車輪抱死，而且要求在驅動過程中防止驅動輪滑轉，使汽車在驅動過程中的方向穩(wěn)定性、轉向控制能力和加速性能都得到提高，因此采用了汽車驅動防滑轉向系統(tǒng) ASR（ Accelerations Slip Regulation）。 沒有安裝 ABS 的汽車，如果在行駛中用力踩踏制動踏板，車輪會急速 降低轉速，最后車輪停止轉動，但車身由于慣性依然保持向前滑動。當事故發(fā)生后 ,為了防止災害的擴大 ,包括防止火災和使乘員能從事故車輛中解脫出來的安全裝置和系統(tǒng) ,稱為防止災害擴大的安全系統(tǒng)。一方面是在交通事故發(fā)生之前采取安全措施 ,特別當即將發(fā)生危險狀態(tài)時 ,駕駛者操縱方向盤避讓或者緊急制動以避免交通事故發(fā)生。毋庸置疑 ,先進的汽車安全設施是行車安全不 可缺少的保障。 to a flat tire and depression are the police, in order to ensure safety. Drivers from the monitors can know each tire pressure value, when tire pressure below the club set pressure limit, monitor will automatically alarm. Anyhow, car active safety technology and passive safety technology for the safety of automobile driving is very important, and besides, such as environmental factor, artificial factor of the vehicle safety is also very important. Therefore, we must be prepared to all aspects of requirements and technology, to ensure the safety of vehicle driving. 9 汽車安全系統(tǒng)技術研究分析 摘要： 汽車各部件的好與壞將直接影響汽車行駛的安全性 ,直接關系著人們的生命安全和產財安全。 its basic principle is to protect incar occupant39。 they cooperate with each other to ride the play the auxiliary protective effect. Seat belt usage in under the condition of the crew, balloon help reduce chest, head and facial injuries in the seriousness of the collision. When car collision happened before, the first is the car to stop motion, car under the action of inertial force crews to go forward with the original speed still sport. Not wearing a seatbelt crews will and steering dish, front windscreen together, so it can be severely hurt。s driving manipulate labor intensity, improve the driving fort the automatic driving device. Car cruising system (CCS) role is required by the driver: after a normallyclosed switch, no speed on the accelerator pedal can automatically keep the speed, make the vehicle with the fixed speed. Using this device, when on the highway after a long time, the driver driving not have to control the accelerator pedal, reduce fatigue, while reducing unnecessary speed change, can reduce save fuel. 4 Auto cruise control system is the earliest development of the automotive electronic control system. This system USES another speed sensor, will speed signal input engine control microputer, by microputer control vacuum system work. This system can make use of the server, speed control switch lever and brake pedal on vacuum lift switches etc, its function and basic system the same. In this system, electronic control device can accord change of driving resistance, automatic regulation engine throttle Angle, make the speed constant. Such not only reduce unnecessary speed change, which saves fuel, also reduced the driver39。s active safety technology and passive safety technology two aspects elaborated the importance of car parts, and how to improve the safety of the car. Key words: automobile, active safety technology, passive safety technology As traffic tools of the modernization and absolute number increase sharply, traffic accidents are also increasing. Car accident has bee severe global social issues. Undoubtedly, advanced auto safety facilities are the driving safety indispensable safeguard. So, we should start, from technology to research and development of high performance, high safety car, also want to strengthen the regular inspection in cars, so timely maintenance investigation, make cars often in good technical status, so as to improve the safety performance of the car. Here we introduced active safety technology and automobile car passive safety technology. Auto safety is according to the traffic accident happened before and after the classified. One is in a traffic accident take safety measures, especially before immediately will produce risk condition, drivers manipulate the steering wheel avoid or emergency brake to avoid traffic accidents. In the car, drive in usually to ensure the basic manipulation stability, drivers on the surrounding environment and to ensure the visual recognition sex drive the car itself, developed the basic performance antlock braking system (ABS), prevent slippery drive system (ASR), active suspension, power steering and fourwheel drive (4WD), fourwheel steering (4WS), lighting system, wiper, the rearview mirror, prevent from rearend collision car alarm system and laser radar, etc. These security devices and technology, called active safety system, can also be called preventive security system. On the other hand, in order to reduce traffic accidents and pany by personnel directly suffer degree, ensure pany take staff and pedestrian safety, says the security for passive safety, can also be called conflict 1 safety. When after the accident, in order to prevent disasters, including prevent the expansion of fire and make crew from traffic accident can extricate the security devices and systems, called prevent