Exhaust System and Fuel Injection Quiz

Describe the operation of a typical exhaust gas recirculation system fitted to a light vehicle engine.

State three reasons why the exhaust system is mounted to the vehicle body by flexible mounts.

State the two types of silencers used in a modern vehicle exhaust system and how each type reduces exhaust gas noise.

State the four main exhaust gas pollutants generated by a spark ignition, petrol engine.

State the two main exhaust gas pollutants generated by a compression ignition diesel engine.

State the differences between a diesel and petrol engine with respect to mixing of the air and fuel and ignition of mixture.

State what common faults could cause the following colours of smoke to be emitted from the exhaust pipe: black smoke, blue smoke, white smoke.

List five main components of a fuel supply system, fitted with a rotary type fuel injection pump.

Diesel fuel injection pumps are fitted with a governor, name three types of governor used to control engine speed.

Draw two simple diagrams showing the relative position of a fuel injector in a single point injection system and a multi-point injection system.