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ASVAB > Automotive 2 > Flashcards

Automotive 2 Flashcards

1
Q

Fuel system

A

Maintains correct air-fuel mixture for efficient operation. Carburetor is old fashioned, now electronic fuel injection is used

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2
Q

Electric fuel pump

A

Located in the vehicle’s fuel tank, supplies fuel under pressure to fuel injectors

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3
Q

Fuel rail

A

Manifold that supplies fuel under pressure to inlets of all the engine’s fuel injectors

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4
Q

Fuel pressure regulator

A

Regulates pressure. Excess fuel is led to the fuel return line, where it’s sent back to the fuel tank

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5
Q

Fuel injector

A

Sprays fuel into the intake airstream as it receives electrical signals from the PCM. Location determines specific type of fuel injection system

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6
Q

Powertrain control module (PCM)

A

Another word for the vehicle’s central computer, responsible for control of all functions associated with engine and transmission

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7
Q

Intake manifold

A

Distributes air to the intake parts on the cylinder head

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8
Q

Intake air filter

A

All air entering the engine passes through the air filter, which removes airborne contaminants that could damage internal engine parts

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9
Q

Throttle body/plate

A

The throttle plate, which is connected to the throttle pedal, controls engine speed and output of torque

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10
Q

Primary ignition system

A

Low voltage part of the ignition system

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11
Q

Primary coil winding

A

Low-voltage winding in the ignition coil, made up of several hundred turns of heavy wire

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12
Q

Ignition module

A

A transistorized switch that turns the primary current on and off

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13
Q

Reluctor and pick up coil

A

Responsible for generating a signal that operated the ignition module.

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14
Q

Distributor

A

Driven by the engines camshaft, times the spark and distributes it to the correct cylinder. Turns at 1/2 speed of engine

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15
Q

Secondary ignition system

A

High-voltage part of ignition system

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16
Q

Secondary coil winding

A

High voltage winding in the ignition coil. Made up of several thousand turns of fine wire, wound around primary coil winding

17
Q

Coil wire

A

Transmits high voltage from secondary coil winding to distributing cap

18
Q

Distributor cap and rotor

A

Directs high voltage from the coil wire to each cylinder in the firing order

19
Q

Spark plugs

A

Threaded into the cylinder head. Protrudes into the combustion chamber and generates the spark for combustion

20
Q

Exhaust manifolds

A

Majority of exhaust heat and noise is focused on the exhaust manifolds, often made of cast iron for durability under high heat

21
Q

Catalytic converter

A

Responsible for converting toxic components of engine exhaust into relatively harmless compounds such as carbon dioxide and water

22
Q

Muffler

A

Incorporates an expansion chamber and sound absorbing material to diminish noise

23
Q

Electrical starting system

A

Cranks engine to start it

24
Q

Lead-acid battery

A

Battery made up of lead plates immersed in an electrolyte made up of sulfuric acid and water

25
Q

Alternator

A

Belt-driven by the engines crankshaft, converts mechanical energy into electrical energy

26
Q

Actuators

A

Receive output signals from the computer and control vehicle functions

27
Q

Clutch

A

Transmits torque from the engine to the transmission

28
Q

Transaxle

A

Has several gears selected according to the speed of the vehicle and how fast the driver would like to accelerate

29
Q

Half shaft

A

Short drive shaft that transmits power from transaxle to the drive wheels. Front-wheel drive

30
Q

Constant-velocity (CV) joints

A

Transmits power through very steep angles

31
Q

Transmission

A

Rear and four wheel drive

32
Q

Drive shaft

A

Transmits torque from transmission to the drive axle

33
Q

Universal joints

A

Located at each end of the drive shaft, allows the shaft to operate at an angle with the component that’s driving

34
Q

Drive axle

A

Transmits engine power between two drive wheels

35
Q

Torque converter

A

Automatic transmission, uses fluid to transmit power, allows certain amount of slippage when vehicle is stopped

36
Q

Master cylinder

A

Brake systems, located in the engine compartment in front of driver, generates fluid pressure to operate brake assemblies

37
Q

Fluid reservoir

A

Provides fluid to brake circuits

38
Q

Drum brakes

A

Expanding shoes make contact with rotating drum to create friction

39
Q

Disc brakes

A

Brake pads in either side of a rotating disc are “pinched” together to slow the vehicle

ASVAB (10 decks)

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