An object of the present invention is to increase opportunities that a filter is regenerated. Provided is an exhaust purification apparatus for a spark ignition type internal combustion engine, the apparatus including a catalyst and a filter in an exhaust ...

An aspect of the present invention provides an apparatus for estimating a temperature of an exhaust gas which is exhausted from an internal combustion engine 1 to an exhaust manifold 5. The apparatus estimates the temperature of the exhaust gas in the exha...

The present invention is intended to suppress, in an exhaust gas purification system for an internal combustion engine capable of mixing and combusting liquid fuel and compressed natural gas, an excessive rise in temperature of an exhaust gas purification ...

In order to regenerate an NOx trap catalyst 11 under rich spike control, an ECU 15 calculates an extent of a predicted temperature increase ” T_ LNThos2 at the NOx trap catalyst 11 undergoing regeneration based upon operating conditions of an internal co...

The invention provides a method for preferably controlling an internal combustion engine by precisely estimating a current value of a temperature of an exhaust device of an internal combustion engine provided with a variable valve, an exhaust turbo superch...

The method involves determining internal temperature of a catalyst by calculating an average of temperature quantity of exhaust gas by admission of the gas in a catalyst for a limited period of time. The measurement is carried out by a functional variable ...

The system is for monitoring the working of a particle filter (3) for the exhaust gases from an internal combustion motor (1), where the filter has an upstream inflow (3a) from a turbo-compressor (2) and downstream outflow (3b), separated by porous walls. ...