US 5,689,952 AGranted

Exhaust gas-purifying system for internal combustion engines

AssigneeHonda Giken Kogyo Kabushiki Kaisha

InventorsHiroaki Kato, Takashi Komatsuda, Yuichi Shimasaki, Akihisa Saito, Tetsu Teshirogi, Takuya Aoki, Hideo Furumoto, Takayoshi Nakayama

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Abstract

An exhaust gas-purifying system for an internal combustion engine includes an alternator driven by the engine. A regulator controls voltage generated by the alternator. An electrically-heated catalyzer is arranged in the exhaust system of the engine and connected to the alternator to be electrically heated by electric power generated by the alternator. An ECU controls the regulator to control the voltage generated by the alternator and supplied to the electrically-heated catalyzer, according to a degree of aging of the electrically-heated catalyzer.

Claims8

Dependent claims

An exhaust gas-purifying system for an internal combustion engine having an exhaust system, comprising:

an alternator driven by said engine, for generating electric power;
regulator means for controlling voltage generated by said alternator;
an electrically-heated catalyzer arranged in said exhaust system of said engine, said catalyzer being connected to said alternator to be electrically heated by said electric power generated by said alternator;
aging degree-detecting means for detecting a degree of aging of said electrically-heated catalyzer;
and
regulator control means for controlling said regulator means to control said voltage generated by said alternator and supplied to said electrically-heated catalyzer, according to said degree of aging of said electrically-heated catalyzer detected by said aging degree-detecting means.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/634,466Filed 18 Apr 1996
Priority: JP 7-12064921 Apr 1995
Granted: 25 Nov 1997
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F01N 3/2013
Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating: using electric or magnetic heating means
H02J 7/1438
For charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle: in combination with power supplies for loads…
Y02T 10/12
Internal combustion engine [ICE] based vehicles: improving ICE efficiencies
F01N
Gas-flow silencers or exhaust apparatus for machines or engines in general