Mitsubishi Fuso Truck & Bus Corporation

Satoshi Yamazaki

Satoshi Hiranuma

Yoshinaka Takeda

Hiroaki Fujita

Shinichi Saito

Minehiro Murata

Yasuko Suzuki

Goro Iljima

An exhaust purification apparatus for an engine has a first casing () that is interposed in an exhaust path (); a second casing () that is set downstream of the first casing () and contains an exhaust purification device (); a connecting pipe () that connects the first casing and the second casing () to each other and includes an insertion portion that is inserted in the first casing (); and an injection nozzle () that has a tip end inserted in the connecting pipe () and injects an auxiliary agent from the tip end. The insertion portion of the connecting pipe () is provided with a plurality of through-holes () connecting the inside and the outside of the connecting pipe (), so that the exhaust gas contained in the first casing () is introduced into the connecting pipe () through the through-holes and guided towards the second casing ().

Exhaust purification apparatus for an engine

An exhaust purification apparatus for an engine comprises an upstream casing that has a cylindrical shape and accommodates a particulate filter; an exhaust gas outlet that is formed in a side wall of the upstream casing and discharges the exhaust gas that has passed through the particulate filter; a urea-water injector that is fixed to the upstream casing located in a position opposite to the exhaust gas outlet and injects urea-water toward the exhaust gas outlet; and a downstream casing that accommodates an ammonia selective reduction-type NOx catalyst into which the exhaust gas discharged from the exhaust gas outlet flows.

Exhaust purification apparatus for engine

An exhaust purification apparatus comprises an ammonia selective reduction-type NOx catalyst that selectively reduces NOx within exhaust gas by using ammonia as a reducing agent, a urea-water supply device that supplies urea-water into the exhaust gas existing upstream of the ammonia selective reduction-type NOx catalyst, and a control unit. The control unit controls the urea-water supply device so that the urea-water is intermittently supplied according to predetermined supply duration time and predetermined supply suspension time when the urea-water is supplied from the urea-water supply device for the purpose of providing ammonia to the ammonia selective reduction-type NOx catalyst.

Growing community of inventors

Kawasaki, Japan

Satoshi Yamazaki