Internal Combustion Engine Components Quiz

A single upward or downward motion of the piston within a cylinder.

The downward stroke of the piston that occurs right after the air-fuel mixture is ignited in the cylinder.

A type of engine that uses a rotating triangular rotor to create a variable-volume chamber for the four stages of combustion (intake, compression, power, and exhaust).

Valves that control the flow of fuel and air into the combustion chamber, and the exhaust gases out.

Valves in piston engines that allow fuel and air to enter the combustion chamber.

Valves in piston engines that allow exhaust gases to escape from the combustion chamber.

The system that manages the exhaust of cooled combustion gas from the engine, often including pollution control devices.

A device that helps to improve the emptying of the combustion chamber by tuning the exhaust system.

The ratio of an engine's power output to its weight.

A type of lubrication where oil is forced into the bearings under pressure.

A system used to control engine parameters like speed, power, and emissions.

A type of engine control unit that uses digital technology to control all aspects of the engine.

A system that monitors engine health and detects potential problems.

A system within the exhaust that prevents heat from damaging heat-sensitive parts of the engine.

The method used to keep the engine from overheating, usually air or liquid cooling.

A piston ring creates a gas-tight seal between the piston and the cylinder wall within a reciprocating engine.

The part of a reciprocating engine that converts the linear motion of the piston into rotary motion, driving the crankshaft.

A nozzle that expands and cools hot exhaust gases, increasing their velocity and generating thrust.

A rotating shaft that converts the linear motion of pistons into rotary motion in reciprocating engines.

A heavy disc attached to the crankshaft that stores rotational energy, smoothing out power delivery and preventing stalling.

The system that starts the engine, typically a motor powered by the same battery that runs the electrical systems.

A system used to protect heat-sensitive components from engine heat, often made of steel, aluminum, or ceramics.

The process by which friction is reduced between moving parts of the engine using oil or other lubricants.

The process of transferring heat away from the engine using air or liquid.

A type of cooling used in high-altitude rockets where the walls gradually erode in a controlled fashion.

A type of cooling used in some rocket engines where the fuel is used to cool the engine.

A type of lubrication system used in simple two-stroke engines where oil is mixed with fuel or injected into the induction stream.

A type of lubrication system used in early slow-speed stationary and marine engines where oil is supplied by gravity from a reservoir.