when combustion
31spark — I. noun Etymology: Middle English sparke, from Old English spearca; akin to Middle Dutch sparke spark and perhaps to Latin spargere to scatter Date: before 12th century 1. a. a small particle of a burning substance thrown out by a body in… …
32Tunnel — This article is about underground passages. For other uses, see Tunnel (disambiguation). Underground tunnel for heatpipes between Rigshospitalet and Amagerværket in Denmark …
33NOx — Oxides of nitrogen. They are at their worst when combustion is most efficient. They are produced because the air is 78 percent nitrogen. Combines with HC in sunlight to form photochemicalsmog. NOx emissions can be reduced by lowering peak… …
34burnout — The point in time or in the missile trajectory when combustion of fuels in the rocket engine is terminated by other than programmed cutoff …
35burnout — /ˈbɜnaʊt/ (say bernowt) noun 1. the point in time or in the trajectory of a missile or rocket when combustion of fuels in the rocket engine is terminated by other than programmed cut off. 2. Colloquial a nervous breakdown brought on by exhaustion …
36carbon knock — When there is a build up of carbon in the combustion chamber, uncontrolled ignition will take place causing a knocking noise …
37oxidation–reduction reaction — ▪ chemical reaction Introduction also called redox reaction any chemical reaction in which the oxidation number of a participating chemical species changes. The term covers a large and diverse body of processes. Many oxidation– reduction… …
38Diesel engine — Diesel engines in a museum Diesel generator on an oil tanker …
39Rocket engine — RS 68 being tested at NASA s Stennis Space Center. The nearly transparent exhaust is due to this engine s exhaust being mostly superheated steam (water vapor from its propellants, hydrogen and oxygen) …
40gasoline engine — Most widely used form of internal combustion engine, found in most automobiles and many other vehicles. Gasoline engines vary significantly in size, weight per unit of power generated, and arrangement of components. The principal type is the… …
