ASVAB auto & shop Exam Study Guide
Solutions
intake cycle - ANSWER-the intake valve opens as the connecting rod pulls the piston down, drawing
the gas/air mix into the cylinder
compression cycle - ANSWER-the valves are closed, the connecting rod pushes the piston up,
compressing gas/air mix
p...
connecting rod - ANSWER✔✔-The connecting link between the piston and the crankshaft
piston - ANSWER✔✔-movable part in the cylinder forced into motion by explosion of fuel
cylinder - ANSWER✔✔-a chamber within which piston moves
spark plug - ANSWER✔✔-electrical device that fits into the cylinder head of an internal-combustion
engine and ignites the gas by means of an electric spark
crankshaft - ANSWER✔✔-Turns the piston's up and down motion into circular motion
flywheel - ANSWER✔✔-regulator consisting of a heavy wheel that stores kinetic energy and smooths the
operation of a reciprocating engine
camshaft - ANSWER✔✔-a rotating shaft within the engine that opens and closes the intake and exhaust
valve in the engine
tachometer - ANSWER✔✔-An instrument used to measure the speed of a revolving shaft in revolutions
per minute.
carburetor - ANSWER✔✔-a device that blends air and fuel for most older cars (pre-1990). As air moves
quickly through the _____, it creates a vacuum, which draws more and more fuel into the mixture
fuel injector - ANSWER✔✔-an electrically controlled valve that delivers a precise amount of pressurized
fuel into each combustion chamber.
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