| A | B |
|---|
| Stroke | a single action of certain engines. |
| Energy | The capacity for work or vigorous activity; vigor; power |
| Fuel | Something consumed to produce energy, especially: A material such as wood, coal, gas, or oil burned to produce heat or power. |
| Engine Block | The cast metal block containing the cylinders of an internal-combustion engine. |
| Crankshaft | the part of an engine which translates reciprocating linear piston motion into rotation |
| Reciprocating engine | An engine whose crankshaft is turned by pistons moving up and down in a cylinder. |
| Camshaft | An engine shaft fitted with a cam or cams. |
| Intake Valve | The valve which opens to allow air or an air-fuel mixture to enter an engine cylinder. |
| Exhaust valve | The valve on a cylinder in an internal combustion engine which controls the discharge of spent gas. |
| Flywheel | A heavy-rimmed rotating wheel used to minimize variations in angular velocity and revolutions per minute, as in a machine subject to fluctuation in drive and load. |
| Combustion | - A layer of ash on the heat-exchange surfaces of a combustion chamber, resulting from the burning of a fuel. |
| Piston | A solid cylinder or disk that fits snugly into a larger cylinder and moves under fluid pressure, as in a reciprocating engine, or displaces or compresses fluids, as in pumps and compressors. |
| Crankcase | the housing for the crankshaft. The enclosure forms the largest cavity in the engine, separated from the cylinders by the reciprocating pistons. |
| Pushrod | A rod moved by a cam to operate the valves in an internal-combustion engine. |
| Rockerarm | A pivoted lever used in an internal combustion engine to transfer cam or pushrod motion to a valve stem. |
