Engine Fundamentals D2L

Question 1

What describes blocking an engine?

Answer 1

Preventing crankshaft rotation by locking the flywheel in position

Question 2

What component ensures smooth engine operation?

Answer 2

Flywheel

Question 3

HP and KW are units of?

Answer 3

Power

Question 4

True or False;
Valves in an engine are opened by differences in air pressure.

Answer 4

False;
Camshafts open and close valves

Question 5

What component connects the piston to the crankshaft?

Answer 5

Con-Rod
(connecting rod)

Question 6

What abbreviation is used to describe an engine with one camshaft located in the head?

Answer 6

OHC (Over Head Cam)

Question 7

What is the twisting force acting at a radius that produces a turning moment called?

Answer 7

Torque

Question 8

What type of energy is released when fuel inside an engine made to react with oxygen?

Answer 8

Chemical
-stupid fucking question

Question 9

What describes an engine with a stroke of 3.5in and a bore of 2.8in?

Answer 9

Undersquare
-longer stroke length than bore diameter (most diesels to produce high compression ratio)

Question 10

What are gasses that leak past the rings on the piston called?

Answer 10

Blowby

Question 11

What things are required for all engines to create combustion?

Answer 11

Fuel, Heat, Oxygen

Question 12

Put each stroke in order from start to finish describing the correct operation of a four stroke engine.

Answer 12

Intake (suck)
Compression (squeeze)
Power (bang)
Exhaust (blow)

Question 13

How many degrees does the crankshaft of a two-stroke engine rotate in one complete cycle?

Answer 13

360° for 2 stroke

720° for 4 stroke

Question 14

What component would be observed when determining the crankshaft rotation according to the SAE organization?

Answer 14

Flywheel

Question 15

True or False;
The position of the crankshaft throws and the arrangement of the lobes on the camshaft determine the firing order of an engine.

Answer 15

True

Question 16

What engine configuration is also called a pancake engine?

Answer 16

Horizontally Opposed
-like Subaru boxer engine

Question 17

What is the main advantage of an integral engine configuration?

Answer 17

A more compact engine and compressor arrangement

Question 18

Where is the camshaft located on a pushrod engine?

Answer 18

Next to the crankshaft in the block

Question 19

True or False;
Two-stroke engines have the artificial aspiration induction method.

Answer 19

True
-a blower or scavenge piston pushes air through the inlet ports.

Question 20

What type of fuel is used in CI engines?

Answer 20

Diesel

CI= Compression ignition

Question 21

What is used to aid in cooling an air cooled engine?

Answer 21

A larger lubrication supply

Question 22

True or False;
A close-coupled engine load has it’s own mounting feet and relies on the rigid base to ensure correct alignment is maintained between the engine and load.

Answer 22

False
-the driven unit attaches directly to the engine flywheel and flywheel housing. May use engines main bearing as a support.