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In the United States, FAA specifications [1] state that engines up to 1,000 cu in (16 L) engine displacement require an 0.040 in (1.0 mm) orifice diameter, 0.250 in (6.4 mm) long, 60-degree approach angle. The input pressure is set for 80 psi (550 kPa), and 60 psi (410 kPa) minimum cylinder pressure is the accepted standard.
Compressor stalls were a common problem on early jet engines with simple aerodynamics and manual or mechanical fuel control units, but they have been virtually eliminated by better design and the use of hydromechanical and electronic control systems such as full authority digital engine control. Modern compressors are carefully designed and ...
Perkins Diesel Conversions & Factory fitted units, by Allan T. Condie, 2nd edition 2000, ISBN 0-907742-79-3 The 4 107T was used in UK Military electricity generating sets, the engines when in need an overhaul were rebuilt by a Kent based engineering works in Ramsgate, adjacent to the inner Harbour known as Walkers Marine (Marine Engineers) Ltd. Houchins of Ashford an MOD contractor would send ...
Even fluidized metal powders and explosives have seen some use. Engines that use gases for fuel are called gas engines and those that use liquid hydrocarbons are called oil engines; however, gasoline engines are also often colloquially referred to as "gas engines" ("petrol engines" outside North America).
Free-piston engine used as a gas generator to drive a turbine. A free-piston engine is a linear, 'crankless' internal combustion engine, in which the piston motion is not controlled by a crankshaft but determined by the interaction of forces from the combustion chamber gases, a rebound device (e.g., a piston in a closed cylinder) and a load device (e.g. a gas compressor or a linear alternator).
Engines are mostly naturally aspirated while some versions with turbo or super charging are available. Most engines had been introduced by Nissan. Multiple usage of the Renault H series resp. Nissan HR name plates may cause some confusion because both families offer a three-cylinder 1.0L version and another 1.2L version with 3 resp. 4 cylinders ...
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Engines fitted with a decompressor can also be stopped by operating the decompressor, and in a vehicle with a manual transmission it is sometimes possible to stop the engine by engaging a high gear (i.e. 4th, 5th, 6th etc.), with foot brake and parking brake fully applied, and quickly letting out the clutch to slow the engine RPM to a stop ...