Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
Практика перекладу.doc
Скачиваний:
57
Добавлен:
09.11.2019
Размер:
2.55 Mб
Скачать
  1. Imagine you are a transport consultant brought in to advise it on how to make cars safer. Prepare and deliver a presentation of your recommendations to the representatives of the design department.

Pay attention to the following: ABS, adaptive cruise control, highly rigid roof, automatic emergency braking, seat belt, airbags, retractable steering wheel, shatterproof windscreen, lane departure warning system, xenon headlights, …

AIRBAGS

Until a short time ago, most of the progress made in auto safety was in front and rear accidents, even though 40% of all serious injuries from accidents are the result of side impacts and 30% of all accidents are side-impact collisions.

Many car makers have reacted to these statistics and new standards of the National Highway Traffic Safety Administration (NHTSA) by making doors, door frames and floor and roof sections stronger. But cars that now offer side airbags represent a new type of occupant protection.

Engineers say that designing effective side airbags is much more difficult than designing front airbags. This is because much of the energy from a front-impact collision is absorbed by the bumper, hood, and engine, and it takes almost 30 to 40 milliseconds before the impact reaches the car’s occupant. In a side impact, only a relatively thin door and a few inches separate the occupant from another vehicle. This means that door-mounted side airbags must begin deploying within 5 or 6 milliseconds. It takes a collision of about 19kph to trigger side airbags.

The seatbelt airbag is intended to give back-seat passengers the same level of protection as front-seat occupants. The airbag is incorporated in the rear-seat seatbelt and inflates forward on impact.

Bosch has developed an airbag control unit with extended functional range for highly precise triggering of airbags and belt tensioners. According to the company, the system detects the impact speed of a frontal collision at a very early stage with the help of two ‘upfront’ sensors. The central crash sensor’s information ensures good decision precision. Depending on the type of accident, the occupant restraint system can be triggered either in one or two phases.

The new system has two acceleration sensors which transmit signals, from which the electronic control unit calculates early and precisely the energy absorption as well as the velocity of vehicle deformation. After only 15ms, it is clearly recognizable whether it will be a minor crash without the actuation of the airbag of a serious crash with triggering of the necessary passive safety system.

The side impact is detected by means of four side-impact sensors, the signals of which are checked for plausibility against those of the central sensors in the airbag. This concept ensures triggering of the side airbag for optimum protection of head and chest in a lateral collision.

Airbags, though, do not always save lives, they sometimes kill people who are too small or are in the wrong position when the airbags deploy. To prevent this from happening, car makers and suppliers are developing occupant-sensing systems. The three leading technologies for smart airbags are weight-sensing in the seat, position sensing within the car and camera monitoring. These detection systems can automatically deactivate the airbags if the situation is dangerous.