Satoshi Hiranuma

TL;DR: In this article, an exhaust emission control system of an internal combustion engine capable of post injection is described, which enables an efficient rise in the exhaust temperature while inhibiting deterioration of the drivability due to a rapid change in torque.

TL;DR: In this paper, a reducer supply for supplying ammonia or urea water to a NOx catalyst provided in an engine exhaust system is controlled by a control means 45 so that the addition amount of the ammonia or Urea water is increased when an actual NOx cleaning factor is lower than a target cleaning factor.

TL;DR: In this paper, a NOx catalyst for selectively reducing NOx in exhaust gas by adsorbing ammonia is provided at an exhaust system of an engine, ammonia or urea water is supplied to the nox catalyst by reducing agent supplying means, a consumption amount of ammonia adsorbed to the Nox catalyst is derived by consumption amount deriving means based on an exhaust amount of NOx exhausted from the engine detected or estimated by NOx exhaust amount deraining means and an actual NOx cleaning rate by the NOx catalytic converter derived by actual NOX cleaning rate der

TL;DR: In this article, an agitating device for agitating the exhaust gas of an engine includes a base plate having a plurality of through holes that are defined by radially extending spoke portions and a ring-like rim portion.

TL;DR: In this article, an exhaust purification apparatus consisting of 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, and a control unit controlled by the ureawater supply devices so that the UREINFORCE water is intermittently supplied according to a predetermined supply duration time and predetermined supply suspension time.