Komatsu Corporation

Mitsuyoshi Kimura

Shouhei Nagasaka

Akihiro Miki

Shinichi Saitou

Tatsuro Nakazato

Akikazu Miyahara

Takeo Oomori

Toshihiro Hashimoto

Ken Nakano

An exhaust purifying device includes a throttle valve, a DOC device, an SCR device, a fuel injector, an inlet temperature sensor, an outlet temperature sensor, and a controller. The controller includes a heatup-control execution control unit configured to perform a regeneration treatment for removing a urea deposit when a predetermined heatup control execution condition is met, and a condition judgment unit configured to judge whether or not the first condition is met during the regeneration treatment by the heatup control.

Exhaust purifying device

A controller in a form of an engine controller controls an aftertreatment device for a residual substance in exhaust gas. The engine controller includes a regeneration occurrence-condition output unit that outputs regeneration occurrence-condition data indicating occurrence of a regeneration treatment of the aftertreatment device, and a regeneration division detector that detects division of the regeneration treatment by a key-off operation conducted during execution of the regeneration treatment. The regeneration occurrence-condition output unit outputs regeneration occurrence-condition data that is analyzable to show that a regeneration treatment before the division detected by the regeneration division detector and a regeneration treatment after the division are a series of regeneration treatments.

Control device of aftertreatment device, working vehicle, control system, and control method of aftertreatment device

A malfunction-determining device for an exhaust gas purifying device, which includes a filter device and a pressure measuring device, includes a usability determiner being configured to determine whether or not the pressure measuring device is usable based on a pressure measured by the pressure measuring device and an exhaust gas flow rate, a frozen-state determiner being configured to determine whether or not the pressure measuring device is frozen, and a malfunction determiner being configured to determine that the pressure measuring device has a malfunction when the usability determiner determines that the pressure measuring device is unusable and the frozen-state determiner determines that the pressure measuring device is not frozen.

Malfunction-determining device for exhaust gas purifying device and malfunction-determining method for exhaust gas purifying device

Growing community of inventors

Oyama, Japan

Mitsuyoshi Kimura