Toyota Jidosha Kabushiki Kaisha

Daihatsu Motor Company, Ltd.

Diamond Electric Mfg. Co., Ltd.

Kouichi Satoya

Mamoru Yoshioka

Takashi Kato

Kenichi Harada

Norio Shibata

Hidemi Ohnaka

Hideaki Mizuno

Mitsuhiro Izumi

Yoshiyuki Fukumura

Nobuki Uchitani

Morito Asano

Tatsuyoshi Kamohara

Kouichi Kitaura

The present invention is an operation control method on the basis of an ion current in an internal combustion engine, the method comprising a step of detecting the ion current generated within a combustion chamberso as to control an operating state of the internal combustion engineon the basis of a state of the detected ion current, wherein a control at an engine start point in time on the basis of the state of the ion current is stopped for predetermined cycles just after the engine start.

Operation control method on the basis of ion current in internal combustion engine

A diagnosis device for an exhaust gas recycling device diagnoses whether or not an exhaust gas recycling device is operating normally; the temperature of an exhaust gas recycling passage is detected by a temperature detection means, a decision is made by an exhaust gas recycling operating region detection means whether or not the operating region is such as to carry out exhaust gas recycling, when a decision is made that the operating region is such as to carry out exhaust gas recycling a counter is incremented and when otherwise is decremented, and a decision that the exhaust gas recycling is not being carried out normally, that is that the exhaust gas recycling device has failed, is made when the count value of this counter is at least a certain value and the temperature of the exhaust gas recycling passage is not more than a certain value.

Diagnosis device for exhaust gas recycling device of internal combustion

Growing community of inventors

Aichi-ken, Japan

Kouichi Satoya