Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Patent
1991-01-30
1992-04-21
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
By means producing a chemical reaction of a component of the...
60280, 60293, F01N 322, F02B 3700
Patent
active
051056208
ABSTRACT:
A secondary air supply system for a supercharged engine includes a control valve which controls a diaphragm-operated valve. The control valve with solenoid is electrically controlled according to various engine operating conditions. The diaphragm-operated valve tightly closes the secondary air supply passage to prevent exhaust gas from flowing into the intake passage through the secondary air supply passage under a high engine load and high engine speed condition. The diaphragm-operated valve opens the secondary air supply passage to allow air to be supplied into the exhaust gas under a low engine load and low engine speed condition.
REFERENCES:
patent: 3906722 (1975-09-01), Garcea
patent: 4246752 (1981-01-01), Tryon
patent: 4534173 (1985-08-01), Tsukamoto
Hart Douglas
Nissan Motor Co,. Ltd.
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