Exhaust gas cleaning system for internal combustion engines

Details Exhaust gas cleaning system for internal combustion engines Exhaust gas cleaning system for internal combustion engines

1974-07-15

1976-10-05

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Having sensor or indicator of malfunction, unsafeness, or...

60278, 60290, 60306, F02B 7510, F01N 314

Patent

active

039836975

ABSTRACT:
Herein disclosed in an exhaust gas cleaning system for an internal combustion engine. The cleaning system comprises a change-over valve having its inlet port communicating with an air pump, its first outlet port communicating with the exhaust system of the engine and its second outlet port communicating with the intake system of the engine through a flow control valve. The change-over valve has communication of its outlet ports switched in accordance with the temperature of a catalytic converter which is disposed in the exhaust system.
In a modification, a duct providing communication between the second outlet port of the change-over valve and the flow control valve is provided to communicate with the exhaust system.

REFERENCES:
patent: 3733829 (1973-05-01), Henault
patent: 3748855 (1973-07-01), Day
patent: 3751916 (1973-08-01), Hayashida
patent: 3788070 (1974-01-01), Camarasa
patent: 3799301 (1974-03-01), Bentley
patent: 3805522 (1974-04-01), Sheppard
patent: 3812673 (1974-05-01), Muroki
patent: 3826089 (1974-07-01), Nakajima
patent: 3849984 (1974-11-01), Toda
patent: 3869858 (1975-03-01), Goto
patent: 3872666 (1975-03-01), Bentley

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