Exhaust gas recirculation mechanism for an engine with a turboch

Details Exhaust gas recirculation mechanism for an engine with a turboch Exhaust gas recirculation mechanism for an engine with a turboch

1978-06-30

1980-06-10

Koczo, Michael

Power plants

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

With supercharging means for engine

60611, 123119A, F02B 3700

Patent

active

042066069

ABSTRACT:
A recirculation duct with a check valve is connected to an exhaust duct communicating with the engine and a turbine of a turbocharger and an delivery duct communicating with the engine and compressor of the turbocharger. A branch duct is connected to the delivery tube upstream of the recirculation duct. In the branch duct, a control valve is provided for controlling a quantity of air flowing in the branch duct according to both a pressure in the exhaust duct and a pressure in the delivery duct downstream of the branch dust to lower the pressure in the delivery duct downstream of the branch duct thereby recirculating part of the exhaust gas. The control valve is provided with a dashpot and push rods, and driven by an accelerator when the engine runs at high load. The dashpot damper a rapid movement of the control valve made by the accelerator.

REFERENCES:
patent: 3925989 (1975-12-01), Pustelnik
patent: 4078387 (1978-03-01), Melchior et al.

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