Air supply control systems for turbocharged internal combustion

Details Air supply control systems for turbocharged internal combustion Air supply control systems for turbocharged internal combustion

1989-03-17

1991-06-04

Koczo, Michael

Power plants

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

With supercharging means for engine

60612, F02B 3712

Patent

active

050203274

ABSTRACT:
An air supply control system for an internal combustion engine includes a plurality of superchargers including a turbosupercharger, an exhaust cutoff valve operative selectively to open and close an exhaust passage in which a turbine of the turbosupercharger is disposed, and an intake air cutoff valve operative selectively to open and close an intake passage in which a blower of the turbosupercharger is disposed, wherein both the exhaust cutoff valve and the intake air cutoff valve are closed when intake air mass flow fed to the engine is to be relatively small and are open when the intake air mass flow is to be relatively large, the intake air cutoff valve is delayed to be open compared with the exhaust cutoff valve when the operating condition of the engine is changed into the situation in which the intake air mass flow is to be relatively large from the situation in which the intake air mass flow is to be relatively small, and the intake air cutoff valve is delayed to be closed compared with the exhaust cutoff valve when the operating condition of the engine is changed into the situation in which the intake air mass flow is to be relatively small from the situation in which the intake air mass flow is to be relatively large.

REFERENCES:
patent: 4418536 (1983-12-01), Deutschmann
patent: 4557111 (1985-12-01), Haussmann et al.
patent: 4709552 (1987-12-01), Rutschmann et al.
patent: 4781027 (1988-11-01), Richter et al.

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