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Flashcards in 190201a Deck (20)
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1
Q

Development of the combustion engine started approximately ________ years ago.

A

200 (about 1794)

2
Q

An internal combustion engine converts the heat energy of the fuel into:

A

Useable Mechanical Energy
and
Wasted Heat

3
Q

The term “compression ignition” refers to:

A

The method of igniting fuel in a diesel engine

4
Q

The term “torque” could best be described as:

A

Rotational force

5
Q

What is “engine displacement”?

A

The swept volume of one cylinder multiplied by the number of cylinders

6
Q

The compression ratio of a diesel engine would be:

A

About 2x that of a gasoline engine’s compression ratio (18:1)

7
Q

An air filter with high restriction would effect the volumetric efficiency of an engine how?

A

It would decrease the efficiency

8
Q

Horsepower is a measurement of:

A

The rate of doing work

9
Q

An internal combustion engine dissipates approximately 60% of the heat developed by combustion through:

A

The cooling and exhaust systems

10
Q

The term “stroke” refers to:

A

The distance the piston moves from TDC to BDC

11
Q

List, in order, the four events that make up ONE cycle of an internal combustion engine.

A
  1. ) Intake
  2. ) Can
  3. ) Power
  4. ) Exhaust
12
Q

A four stroke engine completed all four events in how many crankshaft rotations?

A

2 full rotations (720°)

13
Q

“Scavenging” is a term that refers to:

A

Removing exhaust gasses from a cylinder

14
Q

What is the term describing the event when both the exhaust and intake valves being open at the same time, in a four stroke engine?

A

Valve overlap

15
Q

A two stroke engine has a __________ power stroke than a four stroke engine?

A

Shorter

16
Q

The camshaft of a four stroke engine rotates at ______ the crankshaft speed.

A

Half

17
Q

In a gasoline engine, the compression stroke compresses:

A

Both air and fuel to about 1/9 it’s original volume

18
Q

The rpm and power output of a diesel engine are controlled by regulating what?

A

Fuel quantity

19
Q

Engines may be classified in what ways?

A

Any descriptive way, that allows for differentiation

20
Q

A turbocharger is a device used to do what?

A

Increase volumetric efficiency