Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine
Patent
1988-01-11
1990-04-17
Koczo, Michael
Power plants
Fluid motor means driven by waste heat or by exhaust energy...
With supercharging means for engine
60606, 60611, 123316, F02B 3700
Patent
active
049169033
ABSTRACT:
The present invention relates to a method for controlling the working cycle of a four-stroke internal combustion engine which is supercharged by at least one exhaust-driven turbo-compressor (4), and also to an arrangement for carrying out the method. Each cylinder of the engine is provided with an inlet valve (2) to which the compressor (5) of the turbo-compressor (4) delivers air through an inlet pipe (6), and also with an outlet valve (3) from which gases are passed from the cylinder to the turbine (7) of the turbo-compressor (4) through an outlet pipe (8). According to the invention each cylinder is further provided with a pressure control valve (9) which is connected to the outlet pipe (8) by a pressure control line (10), between the outlet valve (3) and the turbine (7) of the turbo-compressor (4). The pressure control valve (9) is intended to open when the piston, during the compression stroke of the engine cycle, is located in the cylinder in a first predetermined position (D) at a distance from the bottom-dead-center position (C) of the piston, and is intended to close when the piston, during the compression stroke, is located in a second predetermined position (E) at a greater distance from its bottom-dead-center position. The air flowing through the pressure control line (10) can be heated in a heat exchanger (23) by hot exhaust gases downstream of the turbine (7) such as to recover heat from these exhaust gases.
REFERENCES:
patent: 2773490 (1956-12-01), Miller
patent: 2936575 (1960-05-01), Lieberherr
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