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MVRUS > Motor Vehicle Technology > Flashcards

Motor Vehicle Technology Flashcards

1
Q

What does the suspension system do?

A

Absorbs shocks, bumps and jolts allowing for a smoother journey.

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2
Q

What are the three areas of the electrical system in a car?

A
  1. Charging system
  2. Ignition system
  3. Starting system
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3
Q

What is the function of the alternator in the charging system?

A

To continually recharge the battery.

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4
Q

How does the alternator work?

A

Driven by the fan belt.

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5
Q

What is the function of the cut out box in the charging system?

A

Switches off to prevent battery from being charged when too many volts are sent from alternator.

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6
Q

What are the 5 components in the charging system?

A

Cut-out box, battery, fan belt, cooling fan, alternator

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7
Q

What is the function of the battery in the charging system?

A

Main source of electricity to power all electrics.

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8
Q

What are all the 6 components in the ignition system?

A

High tension leads, Spark plugs, Distributor, Ignition switch, Battery, Coil

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9
Q

What does the ignition system do?

A

Where you insert your key to start your vehicle. Power travels from battery to coil when key is turned.

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10
Q

What is the function of the coil in the ignition system?

A

To boost 12V to 30,000V

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11
Q

What is the main function of the ignition system?

A

Boost the voltage so enough current is generated to activate the starter motor and spark up each spark plug

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12
Q

What is the function of the spark plug in the ignition system?

A

To create a spark to ignite fuel in a vehicles engine

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13
Q

What are the 6 different components of the spark plug? (From top to bottom)

A

-High tension lead connection
-Central electrode
-Ceramic insulator
-Metal casing
-Threads to screw into top of cylinder
-Earth electrode

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14
Q

What does the distributor do? (Ignition system)

A

Passes current to each of the four spark plugs.

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15
Q

What are the 4 components of the distributor?

A

-High tension leads
-Spark plug contact
-Distributor cap
-Rotor arm

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16
Q

What checks can you carry out on a vehicles electric system?

A

-Lights, horn, windscreen wipers
-Conditions of plugs and wire
-Level of electrolyte in battery
-How secure the battery is

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17
Q

What are the 4 components in the starting system?

A

Flywheel, Pinion gear, Solenoid, Starter motor

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18
Q

What does the starter motor do and how does it do this? (Starting system)

A

Start all moving components in engine. It does this by turning a large tooth flywheel bolted to crankshaft.

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19
Q

What does the solenoid do in the starting system?

A

Allows electrical power to travel to all electrical components.

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20
Q

What is a solenoid?

A

Remote controlled switch used to direct current.

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21
Q

What are the 7 main parts of the engine?

A

Connecting rod, gudgeon pin, crankshaft, crank, crank pin, camshaft, sump

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22
Q

What is the connecting rod?

A

Joins piston to crankshaft

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23
Q

What is the Gudgeon pin?

A

Connects connecting rod to piston

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24
Q

What is the crankshaft?

A

Turned by flywheel and causes pistons to move up and down.

25
Q

What is the crank?

A

The 90degree bend in the shaft

26
Q

What is the crank pin?

A

Used to attach connecting rod to crankshaft

27
Q

What is the camshaft?

A

Controls springs that open and close the inlet and exhaust valves.

28
Q

What is the sump?

A

The tank at the bottom of the engine that stores oil for lubrication

29
Q

What are the 8 components of the four stroke cycle?

A

Spark plug, exhaust valve, inlet valve open, piston rings, piston, gudgeon pin, connecting rod, crankshaft.

30
Q

How does the four stroke cycle work?

A

The piston moves down the cylinder. Springs attached to camshaft open the inlet valve to allow fuel into the cylinder.

31
Q

What is in the two stroke cycle diagram? (First and second stroke)

A

First: Induction > Compression >
Second: Power > Transfer > Exhaust

32
Q

What is in the Diesel engine diagram?

A

Induction air only > Compression injection of fuel > Power > Exhaust

33
Q

What are the 5 components in the exhaust system? L-R

A

Engine compartments, exhaust manifold, catalytic converter, silencer box, tailpipe.

34
Q

What does the manifold do?

A

Collects all burnt gases from each of four cylinders into one pipe.

35
Q

What component reduces noise from the exhaust system?

A

Silencer box

36
Q

What is used to reduce noise in the silencer box and how does it work?

A

It contains baffles, which the airflow has to move around which slows airflow. This results in reduced gas pressures and less noise.

37
Q

What is the use of catalytic converters?

A

To reduce amount of harmful and poisonous emissions into atmosphere from car.

38
Q

Where can you find catalytic converters?

A

On the exhaust pipeline

39
Q

What are the 7 components in the fuel system? (Top then left to right)

A

Air filter, inlet manifold, carburettor, petrol pump, fuel filter, fuel pipelines, petrol tank

40
Q

What is the use of the fuel injection system?

A

It only uses measured amounts of fuel determined how vehicle is being used.

41
Q

What are the 2 advantages of the fuel injection system?

A

-Not wasteful and uses measured amounts
-Saves money long term

42
Q

What are the 2 main functions of the carburettor?

A

-Mix correct amounts of petrol and air together
-Control amount of fuel sent to each cylinder

43
Q

What are the 6 components involved in the transmission system? L-R

A

Engine, clutch, gearbox, universal joints, propeller shaft, final drive differential

44
Q

What is in the transmission system diagram?

A

clutch > gearbox > propeller shaft & universal joints > final drive and differential

45
Q

What is the function of the clutch?

A

Engage and disengage engine from gearbox

46
Q

What are the 7 components in the gearbox?

A

Gear stick, selectors, bolted to universal joint connected to propeller shaft, main shaft, lay shaft, primary shaft from clutch, dog clutch

47
Q

What is the formula to calculate gear ratios?

A

Number of teeth on driven gear / Number of teeth on driver gear

48
Q

What do universal joints allow?

A

Reciprocal and rotary motion

49
Q

What 4 components are in the normal steering system?

A

Steering column, ball joint, rack and pinion gear, steering box

50
Q

What 3 other components are in the power steering system that isn’t in the normal steering system?

A

Rotary valve, pump, pulley

51
Q

What does power steering allow?

A

All wheels to be turned without any real force

52
Q

What 3 components are in the suspension system? L-R

A

Wishbones, MacPhersons struts, Leaf springs

53
Q

What is the MacPherson struts and how do they work? What are they made up of?

A

Most common front wheel suspension, made up of strut, coil spring and shock absorber.
The strut takes impact of wheel striking down and shock absorber slows movement of impact

54
Q

What are the 8 (9) components in the lubrication system?

A

Inlet and exhaust valves, piston, connecting rod, crankshaft, oil strainer, sump, oil filter, camshaft

55
Q

What are the functions of the lubrication system?

A

-reduces friction and overheating
-reduces level of wear
-helps keep all metal surfaces cool

56
Q

What are the two types of cooling systems?

A

Water cooling, Air cooling

57
Q

What are the 5 main parts of the water cooling system?

A

The radiator, water pump, thermostat, water jackets, heater

58
Q

What is the functions of the water cooling system?

A

-Drowns noise from engine
-Keeps engine cool
-Hot water can be used in car heaters

59
Q

What fluid checks may be carried out on an engine?

A

Brake fluid, power steering fluid, oil, water level in batteries, radiator or windscreen washer

MVRUS (12 decks)

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