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internal-combustion enginen (Engineering / Automotive Engineering) a heat engine in which heat is supplied by burning the fuel in the working fluid (usually air)
internal-combustion engine ( n-tûr n l-k m-b s ch n) An engine whose fuel is burned inside the engine itself rather than in an outside furnace or burner. Gasoline and diesel engines are internal-combustion engines, as are gas turbine engines such as turbojets. Compare steam engine. | internal-combustion engine cycles of a four-stroke gasoline-fueled engine: A. intake stroke: the piston moves down, drawing air and fuel into the cylinder; B. compression stroke: the piston moves up, compressing and heating the air and fuel mixture; C. power stroke: the hot air and fuel mixture ignites, forcing the piston down; D. exhaust stroke: the piston moves up, forcing the exhaust gases out of the cylinder |
ThesaurusLegend: Synonyms Related Words Antonyms | Noun | 1. | internal-combustion engine - 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 turbinecylinder block, engine 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" four-stroke engine, four-stroke internal-combustion engine - an internal-combustion 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 internal-combustion engine similar to a gasoline engine but using natural gas instead of gasoline vapor heat engine - any engine that makes use of heat to do work poppet, poppet valve - a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines reciprocating engine - an internal-combustion engine in which the crankshaft is turned by pistons moving up and down in cylinders rotary engine - an internal-combustion engine in which power is transmitted directly to rotating components self-starter - an electric starting motor that automatically starts an internal-combustion engine supercharger - compressor that forces increased oxygen into the cylinders of an internal-combustion engine valve-in-head engine - internal-combustion engine having both inlet and exhaust valves located in the cylinder head |
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