Valve Trains Quiz

What is the primary function of valves in an engine?

• To increase the engine's speed

• To open and close ports to the combustion chamber

• To cool down the engine

• To lubricate engine parts

What do valves allow to enter the combustion chamber?

• Water

• Oil

• Air/fuel mixture

• Exhaust gases

What do valves control the exit of from the chamber?

• Air

• Fuel

• Exhaust gases

• Water vapor

How does the valve train help in pressurizing the air and fuel charge in the combustion chamber?

• By sealing the combustion chamber.

• By increasing the engine temperature.

• By reducing the engine noise.

• By controlling the exhaust emissions.

What does the valve train do to help remove exhaust gases from the combustion chamber?

• It opens and closes the intake valve.

• It increases the fuel supply.

• It opens and closes the exhaust valve at the correct time.

• It decreases the air pressure.

What are the two most common types of valve train assemblies mentioned?

• Overhead Valve (OHV) and Overhead Cam (OHC)

• Pushrod and Flathead

• Rotary and Slide Valve

• Poppet and Sleeve Valve

What drives the camshaft in all valve train assemblies?

• Crankshaft

• Flywheel

• Timing Belt

• Piston

What component in a typical OHV valve train assembly is responsible for opening and closing the valve?

• Rocker arm

• Valve guide

• Camshaft

• Spring retainer

Which part of the OHV valve train assembly connects the camshaft to the rocker arm?

• Valve spring

• Push rod

• Valve guide

• Spring retainer

In a typical OHV valve train assembly, what is the function of the camshaft?

• To hold the valve in place

• To rotate and drive the cam follower

• To compress the valve spring

• To support the rocker arm