water injection

noun — 2 senses

water injection

noun
1

Aeronautics, Aerospace, Automotive, Aviation, Business, Engineering, Natural sciences, Physical sciences, Transport, Vehicles The process of squirting a small amount of water, in the form of a fine spray, into the air/fuel mixture going into a gasoline piston engine, in order to cool the engine cylinders, and, thereby, reduce detonation or knocking in high performance engines, especially when using a high compression ratio.

2

Aeronautics, Aerospace, Aviation, Business, Engineering, Natural sciences, Physical sciences The process of squirting water into the combustion chamber of a jet engine to allow it to produce greater thrust, partly from the production of high-pressure steam and partly from the cooling effect of the water allowing the engine to burn a greater quantity of fuel without overheating.

Related terms
fuel injection

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.