Fuel System

Section B. Car Operating Systems

I. Read the text “Fuel System” and explain the fuel system operation.

In addition to the engine itself there are four separate mechanisms which are used to feed the engine. These mechanisms are the fuel system, the lubrication system, the electrical system and the cooling system. The ignition system as a part of the electrical system is used to start the car.

The fuel system consists of a tank, a fuel pipe, apump and a carburetor.

The fuel is stored in a fuel tank. The fuel tank is connected to a fuel pipe. The fuel pipe carries fuel to the fuel pump. This pump can be either mechanic or electric in operation. Electric pumps are situated near the tank but a mechanic pump is located near the engine because it is driven by the camshaft.

The fuel pump is connected to the carburetor. There the fuel is mixed with air. The optimum ratio of air to petrol in the fuel mixture is 15 parts of air to 1 part of petrol.

The fuel and air are compressed by the piston and they are drawn into the engine.

In the engine the fuel and

air are burnt and produce power.

Notes:

fuel, n. – топливо

fuel pipe, n.–топливопровод

pump, n.–насос

fuel tank, n.– топливный бак

camshaft, n.–кулачковый вал

petrol, n.–бензин

ratio, n.–пропорция, соотношение

piston, n.– поршень