Internal combustion heat engine, control system, method for dimensioning the engine, and automobile with said engine

Abstract

The present invention relates to an internal combustion heat engine comprising at least one combustion chamber for intake of gas comprising a mixture of fuel and an oxidant, wherein the fuel is for example gasoline and the oxidant is for example air, the combustion chamber being connected to The intake circuit (A) for admitting said intake gas into the combustion chamber is connected to the exhaust circuit (B) for exhausting the combusted gases from the combustion chamber; the exhaust gas recirculation circuit (C, D ), connecting the exhaust circuit to the intake circuit; and a control system for exhaust gas recirculation. The control system is designed to enable exhaust gas recirculation at at least one operating point defined by the engine speed and the torque supplied by the engine for which the output torque is greater than 50% of the maximum engine torque. The invention can be used to run an engine with an optimal stoichiometric mixture and spark advance without knocking.

Description

technical field [0001] The field of the invention is that of internal combustion engines, and more particularly gasoline engines, preferably supercharged gasoline engines. Background technique [0002] Internal combustion engines for motor vehicles include a combustion chamber generally formed by one or more cylinders in which a mixture of fuel and air is combusted to produce engine work. The intake mixture may or may not be compressed, depending on whether the engine includes a boost compressor. [0003] Pistons are mounted so that they can move within the cylinders, and these pistons drive a crankshaft that rotates integrally with the shaft. As is well known to those skilled in the art, the rotational speed of an engine is defined as the number of revolutions of the engine shaft at a given moment; furthermore, the torque supplied by the engine is defined as the moment of torque measured on the engine shaft. [0004] In the case of a supercharged engine comprising compres...

AI Technical Summary

Problems solved by technology

[0012] These solutions lead to non-optimal use of injected fuel and thus excessive fuel consumption

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