Week 02 Flashcards
What is the name of the engine component that converts the reciprocal motion of the pistons into the rotary motion needed to turn the wheels?
Crankshaft
Which of the following statements is true about the intake stroke?
The piston travels down in the cylinder.
During the compression stroke:
Both valves are closed.
A certain engine was found to have bent valves and a broken piston. This was most likely caused by:
A broken timing belt.
Which of the following lists the four strokes of an internal combustion engine in the correct order?
Intake, compression, power, exhaust.
Which of the following engine components pushes the valves open?
Camshaft.
It usually makes more sense economically to wait until the timing belt breaks to replace it rather than paying to have it changed earlier
False
What is the best way for a car owner to find out what types of fluids to use and how often the engine’s oil, coolant, and timing components should be changed?
Check the owner’s manual.
What is the name of the component that synchronizes the camshaft and the crankshaft so that the right valves open during the right stroke?
Timing chain or timing belt.
What determines the size of an engine?
The volume of the cylinders
Because changing a timing belt or timing chain is easy, anyone with a set of tools could probably do it successfully
False
A camshaft just turn exactly ___as the crankshaft
Half as fast
Why is the compression stroke important to proper engine operation?
It heats up the air/fuel mixture so that it is prepared to burn efficiently AND it makes the mixture more compact and dense, so that when it ignites, the pressures will be higher.
