Современное автомобилестроение. Сахарова Н.С. - 57 стр.

speed of rotation of the wheel and transmits the information to a microprocessor
which compares the signal with those from other wheels. If one or more wheels are
about to lock or if they roll at a lower speed than the others, the control system will
immediately reduce the hydraulic pressure to the corresponding wheel or wheels.
Pressure adjustments are carried out at the rate of up to twelve times per second.
   The anti-lock brake system has three brake circuits, one of which serves the rear
wheels and one serves each of the front wheels. The brake system is self-monitoring,
and checks itself automatically every time the engine is started. The checks include
the brake fluid pressure, brake fluid level and performance of the wheel sensors. If
the system is in good condition, the warning lamp that lights up on the facia when the
engine is started will be switched off after five to ten seconds. Moreover, the safety
functions are continually monitored while the car is travelling.
   The main components of the Saab ABS system and the ordinary brake system of
the car are integrated into one lightweight, compact unit. The entire system is
preassembled and inspected at the factory before it is installed in the car. This ensures
high production quality and high reliability.

   Words to the text.
   1. anti-lock -анти- блокирующие
   2. front-wheel drive - передний привод
   3. to prevent - предотвращать
   4. to swerve [sw ∂ :v] - отклоняться от прямого пути, сворачивать в сторону
   5. to enhance - усиливать
   6. to duplicate [‘dju:plikeit] - дублировать
   7. mutually independent - взаимно независимые
   8. pressure - давление

   Exersice 13. Answer the following questions to the text.

   1) What enhances the safety of Saab 9000?
   2) What does a sensor at each wheel sense?
   3) At what rate are pressure adjustments carried out?
   4) How many brake circuits has the anti-lock brake system?
   5) Is the entire system pre-assembled and inspected at the factory?

   Exersice 14. Charactarise ABS anti-lock brakes. Use the following words:

   Front-wheel drive, to enhance the safety, mutually independent electronic systems,
hydraulic pressure, three brake circuits, rear wheels, front wheels, self-monitoring,
lightweight, compact.

   Exercise 15. Speak on the topic “Brakes” according to the plan:

   1) The number of brake circuits.
   2) Smooth braking .
                                                                                       57