BASIC ENGINE COMPONENTS: AUTO SECTION OF ASVAB

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BASIC ENGINE COMPONENTS: AUTO SECTION OF ASVAB

EXAM QUESTIONS

Actual Qs and Ans - Expert-Verified Explanation -Guaranteed passing score -12 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: Piston

Answer:

a cylindrically shaped object with a solid crown (top) that moves up and down in the engine's cylinders.Hot gases produced from the combustion of the air-fuel mixture push on the piston to do the actual work

Question 2: Crankshaft

Answer:

converts the linear (straight line) motion of the piston into rotary motion, which can then be used to power a vehicle or drive and accessory

Question 3: Camshaft

Answer:

Responsible for the opening and closing of the engine's intake and exhaust valves. The camshaft turns at one-half the speed of the engine's crankshaft

Question 4: Piston Rings

Answer:

seal the piston to the cylinder and prevent combustion gases from leaking past. Oil rings prevent oil from the engine crankcase from making its way into the combustion chamber

Question 5: Combustion Chamber

Answer:

located in the cylinder head directly above the piston, it is where the actual combustion of the air-fuel mixture takes place

Question 6: Exhaust Valve

Answer:

Allows waste gases to be removed from the combustion chamber. When closed, it must seal the combustion chamber from the exhaust port

Question 7: Wrist Pin

Answer:

connects the piston to the connecting rod, and forms a pivot point for the small end of the connecting rod to move on

Question 8: Cylinder Head

Answer:

located located above the piston, it houses the combustion chamber, the intake and exhaust valves, and the intake and exhaust ports

Question 9: Intake Valve

Answer:

allows the air fuel mixture to be drawn into the combustion chamber. when closed, it must seal the combustion chamber from the intake port

Question 10: Engine Block

Answer:

Forms the framework for the engine cylinders and reciprocating assembly

Question 11: Connecting Rod

Answer:

connects the piston/wrist pin assembly to the engine crankshaft. The large end of the connecting rod attaches to the crankshaft on the connecting rod journal

Question 12: Cylinder

Answer:

forms a guide for the piston to move In; allows the piston to move up and down as the engine completes its cycle