Toyota Jidosha Kabushiki Kaisha

Shigeru Itabashi

Shinya Hirota

Tomihisa Oda

Kuniaki Niimi

Tatsuhisa Yokoi

Hiroya Tanaka

Shinji Kamoshita

Motoshi Asada

Hisayoshi Ota

A period and amplitude of torsional fluctuations of a drive-train to be obtained by applying a phase-lead process, which is a process of advancing a phase by a predetermined amount, to a difference between a rotation speed of a driving source and a rotation speed of the driving source, computed from a rotation speed of a drive shaft, are repeatedly computed. When the computed amplitude of the torsional fluctuations in a predetermined period becomes greater than or equal to a predetermined amplitude at least two times consecutively, predetermined control is executed. In the predetermined control, the driving source is controlled at a torque obtained by adding a correction torque opposite in phase to the torsional fluctuations to a target torque. As a result, vibrations of a driving apparatus are further properly reduced.

Driving source control apparatus

In an internal combustion engine, a first exhaust passage and second exhaust passage branched from an exhaust passage are provided. An NOx storing reduction catalyst and a particulate filter are arranged in each exhaust passage. For example, when NOx should be released from the NOx storing reduction catalyst in the first exhaust passage, fuel is added from a fuel addition valve in the state with exhaust gas allowed to flow into only the first exhaust passage, while when the added fuel sticks to the NOx storing reduction catalyst, the first exhaust control valve is temporarily closed and the exhaust gas is made a rich air-fuel ratio.

Exhaust purification device of internal combustion engine

Growing community of inventors

Nisshin, Japan

Shigeru Itabashi