Deck 6: Internal Combustion Engines

Question 1

The air we breathe is mostly oxygen.

Answer 1

False

Question 2

During the ____ stage the air and fuel mixture is ignited.

A)intake
B)compression
C)power
D)exhaust

Answer 2

C

Question 3

Air density increases as altitude increases.

Answer 3

False

Question 4

The intake event has the longest port duration of all two-stroke events.

Question 5

A____ controls the gasses coming into and out of the four-stroke engine's combustion chamber.

A)reed valve
B)poppet valve
C)transfer port
D)disc valve

Question 6

____ results from unburned or raw fuel

A)Carbon dioxide
B)Oxides of nitrogen
C)Hydrocarbons
D)Carbon monoxide

Question 7

Why are pistons cam ground?

Question 8

Valve over lap is the time when both valves are closed.

Question 9

What is the difference between a 180 and 360 degree crankshaft?

Question 10

During the  ____ stage the piston rises and compresses the air-fuel mixture.

A)intake
B)compression
C)power
D)exhaust

Question 11

_____results from partially burned fuel.

A)Carbon dioxide
B)Oxides of nitrogen
C)Hydrocarbons
D)Carbon monoxide

Question 12

Define the term lift dwell.

Question 13

What is a rocker arm and what is it used for?

Question 14

What are valve seats?

Question 15

Two-stroke engines use one piece rods.