Deck 7: Engine Systems Operation

Question 1

Two technicians are discussing bearing inspection. Technician A says that you can reuse a race if only the bearing is damaged. Technician B says that bearings come pre-lubricated from the factory. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Answer 1

D

Question 2

The charging system consists of the generator, battery, and starter.

Answer 2

False

Question 3

The amount of air that an engine can move in one cycle is its displacement.

Answer 3

True

Question 4

Today's engine design is very different from the original basic engine design from the 1890's.

Question 5

Four-cylinder, in-line, gasoline engines are used less frequently in modern cars because of the block's weight and size.

Question 6

Two technicians are discussing PCV systems. Technician A says that PCV systems are connected to a port on the intake manifold. Technician B says that PCV systems prevent the fuel tank from over-pressurizing. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 7

What is true of installing bearing grease?

A) Do not fill the hub completely with grease.
B) Grease can melt if installed improperly.
C) Grease must be the correct type for the application.
D) All solvent must be dried before installing new grease.

Question 8

All rollers or balls of a bearing must be lubricated for a bearing to be properly lubricated

Question 9

A rotary engine uses a rotor to compress the air/fuel mixture.

Question 10

Two technicians are discussing engine operation. Technician A says that valve timing is critical to smooth engine operation. Technician B says that ignition timing is critical to smooth engine operation. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 11

Two technicians are discussing EFI systems. Technician A says that most modern EFI systems have one injector per cylinder. Technician B says that direct injection uses one central injector for the engine. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 12

Pressurized oil is required to maintain a space between the rod bearing and the crankshaft.

Question 13

The powertrain has become the most complex system in the vehicle.

Question 14

Older vehicles use a(n) _____ catalytic converter.

A) one-way
B) two-way
C) three-way
D) four-way

Question 15

Most bearing failures result directly from improper installation.

Question 16

What is a characteristic of a rotary engine?

A) Turns in two directions with the stop-and-start motion of a piston
B) Has the same problem with harmful emissions as piston engines
C) Produces less horsepower with more wasted energy than a conventional reciprocating engine
D) Is more efficient producing more torque than a piston engine of the same displacement

Question 17

Two technicians are discussing automotive power systems. Technician A says that today's engines operate on different principles than those of the past. Technician B says that today's engine has more computerized sensors and actuators than did an entire vehicle had in the mid-1980's. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 18

RTV must be matched to the application for which it is being used for.

Question 19

Two technicians are discussing engine sensors. Technician A says that MAP sensors measure altitude. Technician B says MAF sensors measure exhaust flow. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 20

Two technicians are discussing exhaust systems. Technician A says that exhaust systems were originally designed to clean the exhaust gases. Technician B says that today's cleaner-running vehicles do not need emission devices. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 21

Two technicians are discussing engine lubricants. Technician A says that many oil filters have check valves to prevent oil drain back during engine shutdown. Technician B says that any oil weight is acceptable for an engine. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 22

What is an advantage of a V-type engine?

Question 23

What valve prevents an oil filter from becoming over-pressurized?

Question 24

What is the purpose of the EVAP system?

Question 25

What are the components of the charging system?

Question 26

What type of seal is shaped like a bracelet without a clasp and fits into a groove in a component to provide a seal?

Question 27

What are two critical concerns with electronic fuel delivery maintenance?

Question 28

How many revolutions of a two-stroke crankshaft are needed to produce a power stroke?

Question 29

Describe direct injection.

Question 30

What are the three criteria in classifying an engine?

Question 31

Two technicians are discussing power adders. Technician A says that superchargers are belt driven. Technician B says that turbochargers are belt driven. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 32

What is the sole emission concern that EGR valves are designed to lower?

Question 33

Two technicians are discussing engine design. Technician A says that in-line engines have the cylinders in a straight line. Technician B says that V-block motors have cylinders divided into two rows set at an angle to each other. Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 34

Describe ball bearings.

Question 35

Gaskets are used to _____.

A) lubricate ball bearings
B) retain lubricants or seal a chamber
C) buffer moving components
D) support axial and radial loads

Question 36

What type of electrical component is a fuel injector considered to be?

Question 37

What are the starter controls of the starting system?

Question 38

What is the order of the four-stroke engine process?

A) Intake, compression, power, valve overlap
B) Intake, compression, exhaust, cool-down
C) Intake, exhaust, compression, valve overlap
D) Intake, compression, power, cool-down

Question 39

Name two types of bearing inserts other than piston bearings.

Question 40

What type fuel pump is typically used with a carburetor system?