汽车专业毕业设计外文翻译--srs安全气囊和空调系统-汽车设计(编辑修改稿)

汽车专业毕业设计外文翻译--srs安全气囊和空调系统-汽车设计(编辑修改稿)内容摘要：

ar detect the sudden deceleration. If the crash id severe enough, electricity flows to the inflator and causes ignition of the gas generator. 2. The gas generator then rapidly burns in the metal chamber. The rapid burning produces inert gases and amounts of dust. The insert gases and dust are cooled and filtered during inflation of the airbag. 3. The inflating airbag splits open the trim cover. The airbag then rapidly unfolds and inflates in front of the occupant. 4. After inflation, the gas is vented through openings or open weave areas in the airbag. These steps take place in a fraction of a second. Airbags deflate in under a second and may be pushed aside for occupants to exit. See There is a general misconception that airbags provide a soft cushion and will prevent bruising or other minor injuries in low severity crashes— this is incorrect. SRS airbags are designed to reduce peak loads on the head chest in severe crashes (those where death or long term brain injury are possible). When deploying, the airbag is firm, but it absorbs energy as the gases are released through the vents. While airbags significantly reduce the risk of serious or fatal injury in crashes, there are some risks from the development of airbags in low speed crashes. For this reason modern cars use a range of intelligent sensing functions to ensure that a crash is really happening (not just a bump in the road or a minor knock in the car park) and to fire airbags at the best time. This reduces the likelihood of airbags deploying in minor crashes. The new SRS airbag system uses a wordfirst dual inflator, twostage deployment system for front passengers. The system has two separate inflators that can be activated separately or together, depending on the vehicle speed and other factors, such as whether the passenger is wearing a seatbelt. In relatively lowspeed impacts, the inflators are activated one after the other for slower inflation. At higher speeds, both inflators are activated simultaneously for quick, effective protection. The system detects if seatbelts are being worn, adjusting the airbag inflation threshold speed for maximum effects and minimum risk. This SRS airbag also controls the seatbelt pretensioners, switching them off in lowspeed accidents to prevent unnecessary risk to vulnerable passengers, such as the elderly. A passengersensing device control side airbag development to prevent potential injuries from these fastactivating systems. Six sensors are built into the front passenger seat. One detects the size of the passenger, and another determines whether the passenger’s head is in the development path of the airbag. If the sensors detect a child asleep with his/her head learning to one side, the side airbag is deactivated to prevent head or neck injuries from airbag deployment. For even safer SRS airbag control, a sophisticated threepoint sensing device has been developed to determine the strength, direction and type of impact. The system has a central sensor and t。