Power plants – Internal combustion engine with treatment or handling of... – Having means analyzing composition of exhaust gas
Patent
1977-03-07
1978-07-18
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
Having means analyzing composition of exhaust gas
60289, 60290, F01N 310, F02B 7510
Patent
active
041007352
ABSTRACT:
A control system for adjusting the amount of a secondary air to be fed into the exhaust system, comprising a secondary air control valve (ACV) for controlling the amount of the secondary air from an air pump, vacuum switching valves (VSV) alternately effecting an operative vacuum on the ACV, and a vacuum control valve (VCV) which is connected to the VSV via a first vacuum reservoir tank and to the intake vacuum area via a second vacuum reservoir tank.
REFERENCES:
patent: 3911674 (1975-10-01), Goto
patent: 3931710 (1976-01-01), Hartel
patent: 3962867 (1976-06-01), Ikeura
Hart Douglas
Toyota Jidosha Kogyo Kabushiki Kaisha
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