Four-stroke cycle Flashcards

To help prepare for the quiz on Friday.

You may prefer our related Brainscape-certified flashcards:
1
Q

What is the cylinder and the function?

A

Hole in block.

Function: contain burning air/fuel mixture

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2
Q

What is the piston and the function?

A

Metal plug and fits inside cylinder.

Function: Convert pressure of burning air/fuel into concentrated force

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3
Q

What is the connecting rod and the function?

A

Metal bar.

Function: transfer force from piston to crank.

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4
Q

What is the crank and the function?

A

Funny shaped metal things.

Function: Up & down to round & round: linear motion to circular motion.

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5
Q

What is the spark plug and the function?

A

Cylinder of ceramic material holding a metal hook.

Function: Creates spark to ignite/fuel mixture.

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6
Q

What is the intake port and the function?

A

Opening (hole) in head of engine.

Function: Direct air/fuel into the cylinder.

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7
Q

What is the intake valve and the function?

A

Big metal golf tee: bigger than the exhaust valve.

Function: Control flow of air/fuel

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8
Q

What is the exhaust port and the function?

A

Hole in side of engine head.

Function: direct combustion…products outside engine channel.

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9
Q

What is the exhaust valve and the function?

A

Big metal golf tee: smaller than intake valve.

Function: Control flow through exhaust port.

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10
Q

What are the four parts of the 4 Stroke Cycle?

A

I. Induction Stroke
II. Combustion Stroke
III. Power Stroke
IV. Exhaust Stroke

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11
Q

What happens in the Induction Stroke?

A

Piston moves down, sucking in air/fuel mixture; the intake valve is open, the exhaust valve is closed, and the spark plug is off.

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12
Q

What happens in the Compression Stroke?

A

The inlet valve closes and the piston moves up and the mixture is compressed.

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13
Q

What happens in the Power Stroke?

A

Piston moves down and spark plug is on which causes the fuel to ignite.

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14
Q

What happens in the Exhaust Stroke?

A

The piston rises which causes the outlet valve opens and the pressure pushes exhaust gases out.

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15
Q

What is Cam and the function?

A

Metal lobe looking things.

Function: open and close the intake and exhaust valves in time with the motion of the piston.

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