Engine 3

The combustion chamber shape in which the valve heads are most parallel with the top of the piston is called the:

• Swirl chamber

• Wedge chamber

• Pancake chamber

• Stratified chamber

Which of the following combustion chambers allows the use of a glow plug in automotive diesel engines?

• Pre-combustion chamber

• Swirl chamber

• Air jet chamber

• Stratified charge chamber

The engine that uses a triangular rotor instead of conventional pistons is called a(n)?

• Rotary engine

• Opposed engine

• Cam-in-block engine

• Spark ignition engine

A Two-stroke-cycle engine requires how many crankshaft revolutions per power cycle?

• One

• Two

• Four

• None of the above

While discussing engines, Technician A says Two-stroke engines are not used in vehicles because they have poor power output at low speeds. Technician B says Two-stroke engines are not used in vehicles because they produce too much exhaust pollution. Who is Right?

• A Only

• B Only

• Both A and B

• Neither A or B

An engine top end usually consists of each of these except?

• Valve train

• Connecting rod

• Cylinder head

• Intake manifold

Which of the following is a hole machined into a cylinder head?

• Stellite face

• Valve seat insert

• Integral valve guide

• Pressed in valve guide

Common passenger car engines have a valve seat angle of:

• 10 degrees

• 20 degrees

• 25 degrees

• 45 degrees

Which of the following is a cross between an oil seal and a valve spring shield?

• Nylon Shedder

• O-ring valve seal

• Valve spring shim

• Umbrella valve seal

Low spring tension can cause:

• Valve float

• Valve rotation

• Valve spring shim

• Mushroomed valves