Engine Repair 2 Mid term

As ____ is a twisting or turning force, ____ is the rate (in time and distance) at which that force (_____) is produced.

• Torque; horsepower; torque

• Torque; horsepower; horsepower

• Horsepower; torque; horsepower

• Horsepower; torque; torque

External combustion means that the fuel is being burned outside of the engine, while internal combustion means the fuel is burned inside of the engine.

• True

• False

______ the diameter of the bore or ______ the length of the stroke will produce a larger piston displacement.

• Increasing; increasing

• Increasing; decreasing

• Decreasing; increasing

• Decreasing; decreasing

The air-fuel mixture is ignited and burns rapidly, at up to about ______.

• 3,000°F

• 3,500°F

• 4,000°F

• 4,500°F

Technician A says that an interference type engine has minimal clearance between the valves and the piston. Technician B says that in a noninterference engine, if the timing belt was to break, you could bend a valve. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

A broken timing belt on an interference engine means ______.

• A huge repair expense

• The entire engine could need to be replaced

• The entire engine will need to be replaced

• Both A and B

A long block engine replacement still requires swapping parts from the original engine to the short block, including the intake and exhaust manifolds, fuel injection system, starter, alternator, power steering pump, and air-conditioning compressor.

• True

• False

The reed valve is made of _______ and can be attached to the crankcase or to the inlet port.

• Spring metal

• Heavy plastic

• Aluminum alloy

• Cast iron

Technician A says that reed valves are used to let air and fuel into the combustion chamber on four-stroke engines. Technician B says that in a four-stroke engine, the engine oil is mixed with gasoline. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

Technician A says that the rotary engine does not need to convert reciprocal motion into rotary motion. Technician B says that the rotor is roughly triangular and turns inside of a housing. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B