432 Q2 Anatomy

To accelerate fuel evaporation, gasoline direct injection (GDI) makes use of

• the higher temperature inside the cylinder.
• the longer evaporation time.
• both of them.

Diesel engines inject fuel in the intake manifold upstream of the cylinder.

• True.
• False.
• Sometimes

If a diesel engine has difficulty starting, the probable reason is faulty (خربانة) spark plugs.

• True.
• False. The spark plugs in a diesel engine are not responsible for its start-up problems.

• This is a bogus (مضللة) statement.

Which one of these parts is NOT included in the cylinder head?

• Intake and exhaust valves
• Camshafts
• Spark plugs
• Oil and water pumps

Which of these are functions of oil in the engine?

A) lubrication

B) Cooling

C) Cleaning of soot and metal debris (بقايا)

• All of them
• A & B only
• A & C only
• A only

If you buy a new European car here in KSA, and it is missing the thermostat in the cooling-water circuit of the engine, then the manufacturer has fooled you.

• True.
• False.

The power of a gasoline engine is controlled mechanically by the throttle valve.

• True.

• False.