Control apparatus for rapidly warming up catalyst in internal co

Details Control apparatus for rapidly warming up catalyst in internal co Control apparatus for rapidly warming up catalyst in internal co

1992-02-11

1993-05-18

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60285, F01N 320

Patent

active

052110117

ABSTRACT:
A control apparatus for rapidly warming up a catalyst disposed within an exhaust pipe connected to an internal combustion engine. The control apparatus first determines a fuel injection amount and an ignition timing of the engine on the basis of an engine operating condition such as an intake air pressure of the engine and a rotational speed of the engine. The control apparatus is also responsive to temperature information of the catalyst for adjusting the fuel injection amount and the ignition timing in accordance with the catalyst temperature information. When the catalyst temperature does not reach the effective emission-purifying temperature, the control apparatus alternately adjusts the fuel injection amount to a rich amount and a lean amount and further intermittently retards the ignition timing. This injection and ignition control operation allows acceleration of the warming-up of the catalyst to suppress the deterioration of the emissions from the engine.

REFERENCES:
patent: 3751941 (1973-08-01), Pollock
patent: 3813877 (1974-06-01), Hunt
patent: 4007590 (1977-02-01), Nagai
patent: 4132198 (1979-01-01), Masaki
patent: 4351297 (1982-09-01), Suematsu
patent: 4379387 (1983-04-01), Iizuka
patent: 4574588 (1986-03-01), Hayama
patent: 4617793 (1986-10-01), Suzuki
Nakabayashi Katsuhiko; Air-fuel Ratio Control System; Patent Abstracts of Japan; Feb. 17, 1983; vol. 007, No. 98.
Sawamoto Hiroyuku; Air-Fuel Ratio Control Device for Internal Combustion Engine; Patent Abstracts of Japan; Jan. 24, 1991; vol. 015, No. 134.
Morikawa Koji; Engine Control Device of Two-Cycle Engine; Patent Abstracts of Japan; Jul. 16, 1983; vol. 015, No. 400.
Sakurai Shigenori; Apparatus for Purifying Exhaust Gas of Engine; Patent Abstracts of Japan; Mar. 22, 1983; vol. 007, No. 133.
Uchinami Masanobu; Air-fuel Ratio Controller; Patent Abstracts of Japan; Feb. 15, 1990; vol. 014, No. 209.
Ihara Kazunori; Exhaust Gas Purifying Device for Engine; Patent Abstracts of Japan; Aug. 30, 1991, vol. 015, No. 463.
Torio Kazuo; Catalyst Warmer of Automobile Engine; Patent Abstracts of Japan; Oct. 1982; vol. 007, No. 009.

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