Power plants – Internal combustion engine with treatment or handling of... – Having means analyzing composition of exhaust gas
Patent
1978-10-19
1980-06-17
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
Having means analyzing composition of exhaust gas
60290, F01N 310
Patent
active
042077370
ABSTRACT:
An apparatus for controlling the amount of secondary air injection including a secondary air injection system which allows the injection of secondary air into an exhaust system for the purpose of causing the combustion of unburned components of the exhaust gas from an internal combustion engine, an air to fuel ratio sensor which determines either the concentration of the oxygen or the concentration of the carbon monoxide in the exhaust gas, a means which senses a sudden acceleration of the internl combustion engine, a control means which sends out an activating signal in response to the output of the air to fuel ratio sensor and the means for detecting a sudden acceleration of the internal combustion engine and a valve means which controls the amount of secondary air injected by the secondary air injection system in response to the activating signal from the control means whereby the valve means causes the amount of secondary air injected into the secondary air injection system to increase when the air to fuel ratio is less than some predetermined value and to decrease if the air to fuel ratio is greater than some predetermined value and to increase the amount of secondary air injected into the secondary air injection system when a sudden acceleration of the internal combustion engine is sensed.
REFERENCES:
patent: 1883686 (1932-10-01), Geiger
patent: 3626915 (1971-12-01), Nakajima
patent: 3768259 (1973-10-01), Carnahan
patent: 3931710 (1976-01-01), Hartel
patent: 3962867 (1976-06-01), Ikeura
patent: 3974651 (1976-08-01), Nakajima
patent: 3975905 (1976-08-01), Shimo
patent: 4007718 (1977-02-01), Laprade
patent: 4036186 (1977-07-01), Hattori
patent: 4041915 (1977-08-01), Konishi
Hart Douglas
Toyota Jidosha Kogyo Kabushiki Kaisha
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