The motor, also known as the engine, could transform one form of energy into another, usually transforming chemical energy into mechanical energy. it is sometimes suitable both for power-generating device, but also for the whole machine containing the power-generating device, such as gasoline engines, aircraft engines. The engine was first born in the UK, so the concept of the engine originated from English, whose original meaning is "the kind of mechanical device to generate power ".
Cement mill engine transforms electrical energy into kinetic energy, in order to drive a cement ball mill. Cement mill engine depends on industrial high-voltage to force the cement mill rotation.
The engines are categorized into piston engine, ramjets, rocket engine, turbine engine.
Work process: intake - compression - injection - Combustion - expansion for power - exhaust.
1) the intake stroke
The working fluid into the cylinder is pure air. Due to the smaller resistance of diesel engine intake system, terminal pressure on air intake is pa = (0.85 to 0.95) p0, higher than gasoline engine. Inlet end temperature is Ta = 300 ~ 340K, lower than gasoline engine.
(2) compression stroke
The compressed refrigerant is pure air, diesel engine compression ratio is higher than that of gasoline engine (usually ε = 16 ~ 22). Compression pressure at the end is 3 000 to 5 000kPa, compressed temperature at the end is 750 ~ 1 000K, much higher than the ignition temperature of diesel engine (about 520K).
(3) The power stroke
Near the end of compression stroke, under the function of the high pressure pump, diesel is spurted into the cylinder combustion chamber on about 10MPa high-pressure through fuel injector, then mixed with air in immediate time, namely self-ignition combustion. The gas pressure in the cylinder rises... [continues]
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