4-stroke Review

What direction is the piston moving on the intake stroke?

• left

• up

• down

• right

What direction is the piston moving on the exhaust stroke?

• left

• up

• down

• right

What are the valves doing on the compression stroke?

• both open

• intake open

  exhaust closed

• Intake closed

  exhaust open

• both closed

The four strokes of an internal combustion engine are

• in, out, combustion, exhaust

• intake, out take, compression, power

• intake, compression, combustion, exhaust

• in, out, power, compression

The four stroke engine cycle begins with the _______ stroke.

• combustion

• intake

• compression

• exhaust

On the exhaust stroke .........

• the intake and the exhaust valves are opened

• the intake valve is closed

• the intake and the exhaust valves are closed

• the exhaust valve opens; the intake valve is closed

What is it?

• combustion stroke

• exhaust stroke

• intake stroke

• compression stroke

What is it?

• combustion stroke

• comression stroke

• intake stroke

• exhaust stroke

what is it?

• exhaust stroke

• combustion stroke

• comression stroke

• intake stroke

During the first stroke (Intake), what valves are open-if any?

• Both closed

• Intake valve open, Exhaust closed.

• Both are open

• Intake valve closed, Exhaust valve open.