Mazda Motor Corporat Ion

Eijiro Tanaka

Takeatsu Ito

Hiroyuki Kurita

Hiroshi Yoshida

A honeycomb-like porous filter for collecting PM in exhaust gas is provided in an exhaust gas passage of an engine. The exhaust gas flows from inflow side cellsof the filter through poresof partition wallsof the filter to outflow side cells. A catalystis supported on surfaces of the partition wallsconstituting the inflow side cellsand on inner surfaces of the poresof the filter. The catalystis supported on the surfaces of the partition wallsmore thickly than on the inner surfaces of the pores

Device for treating exhaust gas from engine and method for manufacturing said device

An engine control device that can suppress thermal degradation of a particulate filter is provided. The device executes a fuel injection control module that restricts the supply of fuel by an injector if a fuel cutting condition is satisfied, an accumulation estimation module that estimates the accumulated amount of soot trapped in a GPF, and a regeneration control module that performs regeneration control for regenerating the GPF by burning soot if the accumulated soot amount exceeds a predetermined setting amount. A fuel cut prohibition line is set in advance and defines a prohibition temperature at which fuel cutting control is to be prohibited in accordance with the accumulated soot amount. The device further executes a prohibition control module that prohibits performance of fuel cutting control by the fuel injection control module if the temperature of the GPF is higher than the prohibition temperature.

Growing community of inventors

Hiroshima, Japan

Eijiro Tanaka