Control arrangement for an internal combustion engine

Details Control arrangement for an internal combustion engine Control arrangement for an internal combustion engine

1984-03-08

1986-01-14

Feinberg, Craig R.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

F02M 2506

Patent

active

045639981

ABSTRACT:
A control arrangement for an internal combustion engine equipped with vacuum-operated control devices includes a method and apparatus for applying a vacuum to a control device, retaining the vacuum for a specified time or under specified engine operating conditions and then reducing the vacuum in a controlled manner. A particular arrangement used to control an exhaust gas return system includes a no-return valve, connected in the vacuum line leading to an exhaust gas return valve, and a by-pass valve for by-passing the non-return valve under specified conditions. Exhaust gas return is maintained over a range of engine operating conditions, incurring a full load condition, to reduce NO.sub.x emissions to desired levels.

REFERENCES:
patent: 3783847 (1974-01-01), Kolody
patent: 4150648 (1979-04-01), Ogita
patent: 4187811 (1980-02-01), Katoh et al.
patent: 4359034 (1982-11-01), Mase et al.
patent: 4393840 (1983-07-01), Tanaka et al.

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