| aircraft engine | the engine that powers and aircraft |
| automobile engine | the engine that propels an automobile |
auxiliary engine
donkey engine | (nautical) a small engine (as one used on board ships to operate a windlass) |
| cargo helicopter | a helicopter that carries cargo |
| cooling system engine cooling system | equipment in a motor vehicle that cools the engine |
diesel
diesel engine
diesel motor | an internalombustion engine that burns heavy oil |
| engine | motor that converts thermal energy to mechanical work |
| engine | an instrument or machine that is used in warfare, such as a battering ram, catapult, artillery piece, etc., medieval engines of war |
engine block
cylinder block
block | a metal casting containing the cylinders and cooling ducts of an engine, the engine had to be replaced because the block was cracked |
engineering
engine room | a room (as on a ship) in which the engine is located |
| externalombustion engine | a heat engine in which ignition occurs outside the chamber (cylinder or turbine) in which heat is converted to mechanical energy |
fanjet
fan-jet
fanjet engine
turbojet
turbojet engine
turbofan
turbofan engine | a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust |
fire engine
fire truck | any of various large trucks that carry firemen and equipment to the site of a fire |
four-stroke engine
four-stroke internalombustion engine | an internalombustion engine in which an explosive mixture is drawn into the cylinder on the first stroke and is compressed and ignited on the second stroke, work is done on the third stroke and the products of combustion are exhausted on the fourth stroke |
| gas engine | an internalombustion engine similar to a gasoline engine but using natural gas instead of gasoline vapor |
gasoline engine
petrol engine | an internalombustion engine that burns gasoline, most automobiles are driven by gasoline engines |
| heat engine | any engine that makes use of heat to do work |
helicopter
chopper whirlybird
eggbeater | an aircraft without wings that obtains its lift from the rotation of overhead blades |
internalombustion engine
ICE | a heat engine in which combustion occurs inside the engine rather than in a separate furnace, heat expands a gas that either moves a piston or turns a gas turbine |
| ion engine | a type of reaction-propulsion engine to propel rockets in space, a stream of positive ions is accelerated to a high velocity by an electric field |
| jet engine | a gas turbine produces a stream of hot gas that propels a jet plane by reaction propulsion |
locomotive
engine locomotive engine
railway locomotive | a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks |
| pilot engine | a locomotive that precedes a train to check the track |
radial engine
rotary engine | an internalombustion engine having cylinders arranged radially around a central crankcase |
ramjet
ramjet engine
atherodyde
athodyd
flying drainpipe | a simple type of jet engine, must be launched at high speed |
reaction-propulsion engine
reaction engine | a jet or rocket engine based on a form of aerodynamic propulsion in which the vehicle emits a high-speed stream |
| reciprocating engine | an internalombustion engine in which the crankshaft is turned by pistons moving up and down in cylinders |
rocket
rocket engine | a jet engine containing its own propellant and driven by reaction propulsion |
| rotary engine | an internalombustion engine in which power is transmitted directly to rotating components |
| shuttle helicopter | a helicopter that shuttles back and forth |
| singleotor helicopter | a helicopter having a single rotor |
| steam engine | externalombustion engine in which heat is used to raise steam which either turns a turbine or forces a piston to move up and down in a cylinder |
switch engine
donkey engine | a locomotive for switching rolling stock in a railroad yard |
tank engine
tank locomotive | a locomotive that carries its own fuel and water, no tender is needed |
| traction engine | steam-powered locomotive for drawing heavy loads along surfaces other than tracks |
| valve-in-head engine | internalombustion engine having both inlet and exhaust valves located in the cylinder head |
Wankel engine
Wankel rotary engine
epitrochoidal engine | a rotary engine that is a four-stroke internalombustion engine without reciprocating parts |
| search engine | a computer program that retrieves documents or files or data from a database or from a computer network (especially from the internet) |
| engine failure | engine does not run |
engineer locomotive engineer
railroad engineer
engine driver | the operator of a railway locomotive |
| engine | something used to achieve a purpose, an engine of change |