Secondary air control device

Details Secondary air control device Secondary air control device

1974-01-17

1976-03-23

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60290, 137117, 137501, F02B 7510

Patent

active

039452050

ABSTRACT:
A secondary air control device which comprises an air passage communicating an air pump with a recombustion device and having a resistor such as an orifice provided midway of the passage and a control valve for maintaining substantially constant the pressure ratio of the pressure on the upstream side of the aforesaid resistor to that on the downstream side thereof, said control valve being so designed as to be operated in association with the pressure of the secondary air and that of exhaust gas, thereby eliminating fluctuation in pressure in the secondary air due to reduction in the discharging performance of the air pump, and thus the secondary air proportional in quantity to the exhaust gas from an engine may be supplied.

REFERENCES:
patent: 2650607 (1953-09-01), Bryant
patent: 2980173 (1961-04-01), Perkey
patent: 3028876 (1962-04-01), Gratzmuller
patent: 3360927 (1968-01-01), Cornelius
patent: 3696618 (1972-10-01), Boyd
patent: 3724220 (1973-04-01), Tanasawa
patent: 3791146 (1974-02-01), Hayashi
patent: 3805522 (1974-04-01), Sheppard
patent: 3826089 (1974-07-01), Nakajima
patent: 3892071 (1975-07-01), Garcea

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