A1 Engine Repair Vocab 1

Front

Air Filter

Back

A component that removes dust, pollen, and other particulates from the air before it enters the engine for combustion. Ensures optimal performance and prevents abrasive wear on the engine.

Front

Balance Shaft

Back

An engine component used to reduce vibration by counterbalancing rotational forces within the engine. Positioned parallel to the crankshaft, it rotates at twice the crankshaft’s speed for smoother operation.

Front

Camshaft

Back

A rotating shaft within the engine that opens and closes the intake and exhaust valves in sync with the pistons. Driven by the crankshaft via a timing belt or chain.

Front

Camshaft Bearings

Back

Precision-made smooth surfaces or sleeves inside the engine block that support and reduce friction for the camshaft as it rotates.

Front

Camshaft Bore

Back

The cylindrical opening in an engine block that houses the camshaft, requiring precise machining for correct alignment and clearance.

Front

Camshaft Bore Alignment

Back

Refers to the proper geometric alignment of the camshaft bores in an engine block, ensuring the camshaft rotates without excessive friction or wear.

Front

Camshaft Bore Out-Of-Round

Back

A condition where the camshaft bore deviates from a perfect circular shape, leading to improper camshaft operation and increased wear.

Front

Camshaft Bore Wear

Back

Wear inside the camshaft bore, which can result from inadequate lubrication, debris, or high operating temperatures, leading to increased clearances and potential engine damage.

Front

Camshaft Journals

Back

Sections of the camshaft that rest on the bearings, providing a smooth, hardened surface to reduce friction and wear.

Front

Camshaft Lift

Back

The height by which a camshaft lobe lifts the valve off its seat during operation, critical for controlling air and fuel mixture intake and exhaust gas expulsion.