Method of controlling supercharge pressure and apparatus for rea

Details Method of controlling supercharge pressure and apparatus for rea Method of controlling supercharge pressure and apparatus for rea

1985-12-23

1988-08-16

Husar, Stephen F.

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

With supercharging means for engine

60603, F02D 2300

Patent

active

047634774

ABSTRACT:
A supercharge pressure control apparatus having a plurality of detectors, a control valve for controlling the exhaust gas flow flowing into an exhaust gas turbine, first and second electromagnetic valves for selectively controlling the control valve in response to control signals, and an electronic control unit for controlling the first and second electromagnetic valves in accordance with operating conditions of the engine. The opening of the control valve is compulsorily opened to a predetermined opened condition when the vehicle is in the idling condition or it is running at low speed below a preset vehicle speed through the second electromagnetic valve, while maintaining supercharge pressure control by the control valve through the first electromagnetic valve when the actual vehicle speed is above the preset vehicle speed. Excessive increase in engine speed during no load conditions or an idling condition of the engine can be prevented, while a sufficient output power can be obtained at the initial period of a suddenly accelerated condition of the vehicle without excessive reduction of the exhaust gas flow rate.

REFERENCES:
patent: 2944786 (1960-07-01), Angell et al.
patent: 4227372 (1980-10-01), Kakimoto et al.
patent: 4556038 (1985-12-01), Okamoto et al.
patent: 4597264 (1986-01-01), Cipolla

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