The exhaust gas treatment system is for an internal combustion engine (1) with several cylinders (2.1, 2.2, 2.3, 2.4, 2.5, 2.6), the exhaust gases from which can be connected to at least two exhaust gas flows (5, 6). These flows can be connected by a conne...

An exhaust emission purifying apparatus 100 performs the purification process of the exhaust gas emitted from a diesel engine 10 of a forklift. The exhaust emission purifying apparatus 100 elevates the temperature of the exhaust gas for the purpose of repr...

Accelerated heating of automotive exhaust system components is effected by controlling the application of supplemental electrical loads to the vehicle electrical system thereby increasing engine load and increasing exhaust heat. Alternative strategies are ...

The invention relates to a method for controlling a combustion engine provided with at least one cylinder (1-4) and a device (7) for compressing induction air, which engine supplies a heat flow to a catalytic converter (12) arranged in an exhaust conduit d...

An internal combustion engine is provided in which the temperature of an exhaust gas gradually decreases from its upstream side to its downstream side, and the temperature of a working medium of a heat exchanger, which flows in the opposite direction to th...

At the start of operation of an internal-combustion engine(S10,S12,S14), an exhaust flow is restrained (to raise the exhaust pressure) (S18), secondary air is supplied (S20), and the combustion air-fuel ratio (A/F) is set within the range of rich air-fuel ...

When an internal combustion engine is in a cold state (S12), fuel is injected during compression stroke with burn air/fuel ratio controlled so as to produce a slight lean air/fuel mixture equivalent to or slightly leaner than a stoichiometric air/fuel mixt...

The present invention relates to an engine supercharging system and is intended to sufficiently fulfill the supercharging function at the time of either of low speed running of the engine and high speed running and realizing output improvement or fuel expe...

Catalytic converter Lambda-/oxygen sensor for the control of the stoicmetric ratio of air to fuel. The cylinder Lambda oscillation is subjected to a pre-control in respect to amplitude and/or frequency and/or oscillation mode as a function of the air mass ...