Isuzu Motors Limited

Hotaka Saitou

Takao Onodera

Satoshi Hanawa

Hirofumi Hashimoto

Daiki Ishii

Yoshifumi Hanamura

Hitoshi Takikawa

Kazushige Yamaura

Motoki Mitsuyama

A NOx generation amount control device includes: a cumulative amount calculating part calculating a cumulative NOx amount obtained by adding together a plurality of NOx exhaust amounts calculated for each prescribed time interval; a specifying part specifying a target value of the cumulative NOx amount associated with a movement distance of a moving body or an output value of an engine; an estimating part estimating a predicted NOx amount indicating a predicted cumulative NOx amount based on a rotation speed of the engine and a fuel injection amount; a judging part judging whether the sum of the predicted NOx amount and the cumulative NOx amount exceeds the target value; and a determining part determining a scheduled NOx exhaust amount and determining at least one of an opening degree of the EGR valve and an opening degree of a turbocharger.

NOx generation amount control device

In an engine systemhaving a high-pressure stage turbochargerand a low-pressure stage turbochargerprovided in series, a control deviceis configured to perform control such that when switching from multi-stage supercharging Cm to single-stage supercharging Cs, after only the exhaust bypass valveis opened, and thereafter, an intake bypass valveis opened later than at a timing at which the exhaust bypass valveis opened.

Engine system and method for controlling same

Growing community of inventors

Fujisawa, Japan

Hotaka Saitou