Mazda Motor Corporation

Daisuke Higaki

Hiromu Sugano

Chikara Ishihara

Masaru Yamamoto

Hiroaki Ishida

Masashi Naono

Masatsugu Sakimoto

Kouta Matsue

Shoichi Toyokawa

A method of controlling a system having an internal combustion engine, a filter in an exhaust passage, a reduction catalyst downstream of said filter capable of reducing nitrate oxide contained in the exhaust gas with reductant supplied thereto is provided. The method may include, in a first mode, combusting a first amount of particulate matter trapped in said filter and supplying a first amount of reductant to said reduction catalyst when an amount of particulate matter trapped in said filter is less than a predetermined trapping amount (&#x3b1;). The method may further include, in a second mode, combusting a second amount of particulate matter that is greater than said first amount of particulate matter and supplying a second amount of reductant to said reduction catalyst when an amount of particulate matter trapped in said filter is equal to or greater than said predetermined trapping amount (&#x3b1;).

Method and system using a reduction catalyst to reduce nitrate oxide

Growing community of inventors

Hiroshima, Japan

Daisuke Higaki