Kubota Corporation

Hirozumi Kuwabara

Tetsuya Kosaka

Koichi Funaki

Tamon Tanaka

Satoshi Inayama

Soichiro Watanabe

Yoshitaka Taira

Katsushi Inoue

Toshio Nakahira

Shuichi Yamada

Masahiko Sugimoto

It is an object of the present invention to provide a diesel engine in which an engine body, a DPF case and an SCR catalyst case can be placed compactly. In the diesel engine including the engine body, the DPF case and the SCR catalyst case, a DPF is accommodated in the DPF case and an SCR catalyst is accommodated in the SCR catalyst case, the DPF case and the SCR catalyst case are mounted on the engine body, the DPF case is supported by the engine body through an exhaust gas introducing pipe, and the SCR catalyst case is supported by the DPF case through an exhaust gas relay pipe.

Diesel engine

It is an object of the present invention to provide a diesel engine in which a DPF case and an SCR catalyst case can be placed compactly. The diesel engine includes an engine body, the DPF case and the SCR catalyst case, a DPF is accommodated in the DPF case, an SCR catalyst is accommodated in the SCR catalyst case, and the DPF case and the SCR catalyst case are mounted on the engine body. The SCR catalyst case is placed in a direction which extends along the DPF case. The DPF case is placed directly above a flywheel housing and right behind a cylinder head cover, and the SCR catalyst case is placed directly above the cylinder head cover.

The present invention has an object to provide an exhaust device for a diesel engine capable of surely burning flammable gas in an exhaust route. In the exhaust device for the diesel engine, liquid fuel () is supplied from a liquid-fuel supply source () to a gas generator (). The gas generator () converts the liquid fuel () to flammable gas () and has a flammable-gas flow outlet () of the with which an exhaust route () is communicated upstream of a diesel-particulate-filter (). The flammable gas () flowed out from the flammable-gas flow outlet () is burnt with oxygen in exhaust gas () to produce combustion heat. The exhaust gas () heated by the thus produced combustion heat can burn the exhaust-gas fine particles remaining at the filter (). The gas generator () is provided with a catalyst chamber () which houses a catalyst (). Catalyst-combustion heat is generated in the catalyst chamber () which is arranged along an external periphery of a peripheral wall () of the exhaust route ().

Exhaust device for a diesel engine

Growing community of inventors

Osaka, Japan

Hirozumi Kuwabara