Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Kiyoshi Hatano

Shinichi Murata

Masahiko Kubo

Tetsuo Kataoka

Setsuo Nishihara

Satoshi Imai

Mikio Terada

Kazuya Oohashi

Ichiyo Kojima

Hiroki Taniguchi

An exhaust emission control device comprises an oxidizing catalyst, a particulate filter on which soot is deposited, and a temperature sensor for detecting the temperature of exhaust gas on the upper-stream side of the filter. An intake system of an engine is provided with an EGR valve for returning the exhaust gas to the intake system. If the temperature of the oxidizing catalyst is found to be lower than its active temperature as the particulate filter is regenerated, the catalyst is heated by delaying the injection timing for the main fuel injection of the engine and increasing the EGR gas reflux quantity. Thus, the oxidizing catalyst can be heated up without lowering the fuel-efficiency, and soot on the particulate filter can be efficiently subjected to re-combustion.

Exhaust emission control device of engine

Belt drive device for reducing belt load

An engine cooling system for inducing a stream of cold air via a radiator fan toward the rear part of a vehicle so as to cool a vehicle engine, which includes catalysts downstream of an exhaust manifold. The radiator fan is displaced in front the engine so that substantially no cold airstreams from the radiator fan directly strike the exhaust manifold. Thus, exhaust emissions are prevented from being excessively cooled, so that the catalysts can become active to purify the exhaust emissions reliably. The engine cooling system is effective to keep the catalysts active when the engine is in the partial cylinder operation mode in which the exhaust emissions tend to be lowered in the temperature.

Engine cooling system

Growing community of inventors

Kyoto, Japan

Kiyoshi Hatano