Flow rate control apparatus in exhaust gas recirculation system

Details Flow rate control apparatus in exhaust gas recirculation system Flow rate control apparatus in exhaust gas recirculation system

1976-05-14

1977-06-07

Nilson, Robert G.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02M 2506

Patent

active

040276368

ABSTRACT:
A sonic nozzle is formed in a recirculation passage interconnecting the exhaust line to the induction passage of an internal combustion engine and a valve member is arranged to vary the throat area of the nozzle, while the induction passage has a similar combination of sonic nozzle and a valve member. The control apparatus has a valve actuating mechanism arranged to link the respective valve members in the sonic nozzles with a common element which is necessarily moved when a change in the engine speed is intended, so that the throat area in the recirculation passage is varied always in direct relation to the throat area in the induction passage.

REFERENCES:
patent: 3237615 (1966-03-01), Daigh
patent: 3465736 (1969-09-01), Daigh
patent: 3675633 (1972-07-01), Nakajima

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