Hybrid Book - Chapter 4
8 Questions
| Total Attempts: 37
Questions and Answers
- 1.The LIVC and cam phasing techniques used with an idling Atkinson-cycle engine can yield fuel consumption saving of about ___.
- A.
1% to 3%
- B.
4% to 7%
- C.
5% to 9%
- D.
10% to 13%
- 2.The Miller cycle is a modified Atkinson cycle in which a(n) ___ is added to an engine in order to increase the compression ratio.
- A.
Throttle plate
- B.
Inlet valve
- C.
Spark plug
- D.
Supercharger
- 3.The ___ of an Atkinson-cycle engine at low loads is higher than with a comparable Otto-cycle engine.
- A.
Engine efficiency
- B.
Power output
- C.
Air/fuel ratio
- D.
Pumping loss
- 4.Electric traction systems for automotive use are designed as ___ machines.
- A.
Constant torque
- B.
Constant speed
- C.
Variable-rotor angle
- D.
Switched-pattern field
- 5.A high expansion ratio delivers a longer power stroke, which reduce the ___.
- A.
Expansion stroke
- B.
Movement of the throttle plate
- C.
Efficiency of the engine
- D.
Heat wasted in the exhaust
- 6.The ___ cycle enables the compression stroke and expansion stroke to be set independently of each other.
- A.
Miller
- B.
Otto
- C.
Atkinson
- D.
Cylinder deactivition
- 7.___ is a measure of how well a vehicle uses its fuel and is calculated based on the ratio of output power to input power.
- A.
Efficiency
- B.
Power stroke
- C.
Torque
- D.
Capacity rate
- 8.Approximately ___ of the power generated by a supercharged engine is usually required to do the work of driving the supercharger.
- A.
1% to 5%
- B.
5% to 10%
- C.
15% to 20%
- D.
50% to 60%
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