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Well familiar roar of the diesel is generated by ignition of fuel and the subsequent sharp recession of a high pressure in the combustion chamber. The most accurately specific roar of the diesel is audible after start-up during warming up of the engine on single turns.
The diesel has no system of ignition, but there is a system of prestarting warming up of combustion chambers of cylinders by means of starting candles. Besides, times of a long provorachivaniye of the engine a starter and painful expectation when the control lamp of the end of prestarting warming up goes out, passed long ago. Already many producers release the fast-started diesels which start requires no more than couple of seconds in the winter. Some cars even have "the starting handle" which can be operated directly the fuel pump of a high pressure to change the injection moment, to accelerate warming up and to reduce emission of a smoke at start-up.
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