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Axi-symmetric stall, more commonly known as compressor surge; or pressure surge, is a complete breakdown in compression resulting in a reversal of flow and the violent expulsion of previously compressed air out through the engine intake, due to the compressor's inability to continue working against the already-compressed air behind it.
Turbocharger failures and resultant high exhaust temperatures are among the causes of car fires. [60] Failure of the seals will cause oil to leak into the exhaust system causing blue-gray smoke or a runaway diesel.
Diesel engine runaway is an occurrence in diesel engines, in which the engine draws extra fuel from an unintended source and overspeeds at higher and higher RPM, producing up to ten times the engine's rated output until destroyed by mechanical failure or bearing seizure due to a lack of lubrication. [1]
Automakers use engine downsizing to help improve vehicles’ fuel efficiency and reduce emissions, and use turbocharger technology to recover power lost in the downsizing process. [5] The presence of LSPI limits automakers’ ability to capture the full potential of turbocharged engines to meet increasing fuel-efficiency requirements [ 1 ] and ...
The first turbo-diesel production car was the Mercedes-Benz 300SD (W116) saloon, which was sold in the United States from mid-1978 and powered by the OM617 five-cylinder engine. [25] A year later, the Peugeot 604 D Turbo became the first turbo-diesel car to be sold in Europe. Turbo-diesel cars began to be widely built and sold in Europe during ...
The turbocharger up-pipes are a large failure point, with the pipes leaking from many different points but mainly from the joints. Leaking of the up-pipes causes the engine to lose boost and cause exhaust gas temperatures to increase.
Failure of fuel injectors or turbochargers resulting in contamination of the filter with raw diesel or engine oil can also necessitate cleaning. [4] The regeneration process occurs at road speeds higher than can generally be attained on city streets; vehicles driven exclusively at low speeds in urban traffic can require periodic trips at higher ...
This sudden increase in pressure and temperature causes the distinctive diesel 'knock' or 'clatter', some of which must be allowed for in the engine design. [ citation needed ] Careful design of the injector pump, fuel injector, combustion chamber, piston crown and cylinder head can reduce knocking greatly, and modern engines using electronic ...