ASVAB Automotive Information Practice Test 177894

Questions 5
Topics Battery, Crankshaft, Firing Order, Transfer Case

Study Guide

Battery

The battery supplies the power necessary to start the engine when the ignition switch is is turned on.

Crankshaft

The crankshaft converts the reciprocating motion of the piston into the rotational motion that's used to power the vehicle and its components.

Firing Order

The stroke cycle of an engine is governed by the crankshaft which serves to regulate the firing order of the cylinders. All cylinders are not on the same stroke at the same time and correct firing order is important to balance engine operation and minimize vibrations. A common firing order for four-cylinder engines is 1-3-4-2 which indicates that cylinders 1 and 3 fire (power stroke)together and cylinders 4 and 2 fire together.

Transfer Case

The transfer case splits engine power between the front and rear axles of four-wheel drive vehicles.