AUT 102 Pre/Post test

Front

Which of the following statements is true with respect to a rotary engine?
Options:
The rotor is mounted in a cylindrical housing.
There is no reciprocating motion.
The engine produces one power pulse per rotor rotation.
The engine produces more vibration when compared to other ICEs.

Back

There is no reciprocating motion.

Front

Technician A says that the Apex seals in a rotary engine act like piston rings. Technician B says that the rotor is mounted in a rectangular housing. Who is correct?

Back

Tech A

Front

With a(n) ________, instead of mixing the fuel/air in the intake manifold, it mixes in the combustion chamber.

Back

Gas direct injection cylinder head

Front

The overhead cam engine system is more complicated than the OHV engine due to the need for enhanced oiling at the top of the engine for the ______.

Back

All of the above

Front

_______ is a measure of the amount of pressure the valve spring is exerting to overcome the inertia of the valve train as the valve reaches its fully opened position.

Back

Valve spring open pressure

Front

All the statements below are true EXCEPT:
The timing of the valves is controlled by the physical shape and position of the cam lobes on the cam shaft.
Racing engines are designed to minimize the effect of the column inertia encountered at higher rpm.
Valve timing is critical to the proper operation of the ICE.
On variable valve timing engines, the valve timing can be modified to provide the best operating conditions.

Back

Racing engines are designed to minimize the effect of the column inertia encountered at higher rpm.

Front

Who is correct about valve overlap occurring between the exhaust stroke and the intake stroke and assisting in scavenging the cylinder?

Back

Both Tech A and B

Front

Who is correct regarding the lifter and valve relationship: Technician A says that when the lifter is on the base circle of the cam lobe, the valve is closed. Technician B says that the cam-in-block lifter rides directly against the valve?

Back

Technician A

Front

Which of the following is NOT a style of pushrod end? Ball to ball, Cup to adjustable tip, Ball to adjustable tip, Ball to cup

Back

Cup to adjustable tip

Front

When oil inside of an engine's valve cover penetrates the edge of the valve cover gasket material, it may be designed to swell by approximately ____.

Back

30%