An exhaust gas treatment apparatus includes a treatment cabinet and a catalyst part. To the treatment cabinet, introduced is exhaust gas of an engine which uses gas containing methane as a fuel. The catalyst part is accommodated in the treatment cabinet and oxidizes unburned methane contained in…
The invention relates to a method for cold-start preheating of a supercharged internal combustion engine and/or an exhaust aftertreatment device of a supercharged internal combustion engine. The invention further relates to a motor vehicle, in particular a commercial vehicle, with a supercharged…
The invention relates to a control device for an internal combustion engine using the center-of-gravity position of a heat generation rate for combustion control. This control device controls the center-of-gravity position of a heat generation rate to correspond to a reference position in a case…
This invention relates to an air-fuel ratio control device of an internal combustion engine, and an object of the invention is to provide an air-fuel ratio control device of an internal combustion engine that is capable of suppressing a deterioration in the controllability of air-fuel ratio…
A water temperature indicated at a startup timing of an engine is stored as a startup-timing water temperature. During an idling state generated after a cold start, a retard amount (S) is calculated based on the startup-timing water temperature. At this time, the retard amount (S) is set at a…
An engine 10 includes variable valve mechanisms 36 and 38 and a variable compression ratio mechanism 40. An ECU 60 executes temperature balance control when a fuel-cut operation is executed. In the temperature balance control, valve opening characteristics of an exhaust valve 34 are controlled…
System for controlling an after-treatment system (ATS) temperature of a combustion engine, comprising means for carrying out an after-treatment warm up procedure, the system providing the interruption/inhibition of such warm-up means after a time period from the warm up procedure starting.
The method involves determining a priming value of temperature at which a catalytic converter (33A) is actuated, and measuring a real value of the temperature. The real value of the temperature is compared with the priming value of the temperature. An opening and/or closing of a regulation valve…
A warm-up system for warming up an exhaust purification catalyst (4) arranged in an exhaust passage (3) of an engine (2) equipped with a turbocharger (1). The warm-up system includes an electric motor (1m) coupled to a turbine (1t) of the turbocharger (1), and control means (5) for operating the…
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 connection (7). Two exhaust superchargers (8, 9)…
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 reprocessing a collection section 14 on the…
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 disclosed for implementing the invention…
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 downstream from the engine and said…
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 the exhaust gas, gradually increases from its…
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 ratios (S16, S22).
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 mixture (compression S/L operation) (S14), and…
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 expense reduction. The present invention has…
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 and the catalyser oxygen storage capacity…