Method for introducing fuel into a combustion chamber of an internal combustion engine with intake manifold injection and direct injection

Abstract

The invention relates to a method for introducing fuel into a combustion chamber of an internal combustion engine with intake manifold injection and direct injection, wherein a first fuel quantity (M1), which is discharged by means of intake manifold injection and can be introduced into the combustion chamber, is solved. If the first fuel quantity (M1) does not exceed a target fuel quantity (MZ) to be introduced into the combustion chamber by means of intake manifold injection, a second fuel quantity (M2) corresponding to a difference between the target fuel quantity (MZ) and the first fuel quantity (M1) is solved and is predetermined for the direct injection for introduction into the combustion chamber.

Description

technical field [0001] The invention relates to a method for introducing fuel into a combustion chamber of an internal combustion engine with intake manifold injection and direct injection, as well as a computing unit and a computer program for its execution. Background technique [0002] A possible method for fuel injection in gasoline engines is intake manifold injection (SRE), which is gradually being replaced by direct injection (DI). The latter method leads to a significantly better fuel distribution in the combustion chamber and thus a better power yield at lower fuel consumption, for example at moderate partial loads, whereas the first method, for example at small Based on the mixture formation, the load is advantageous in terms of fuel consumption. [0003] There are also gasoline engines with a combination of port injection and direct injection (so-called dual systems). In view of increasingly stringent emission requirements or emission limit values, this is preci...

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Problems solved by technology

[0004] However, deviations in the fuel-air mixture (due to, for example, incorrect fuel dosing) generally lead both to worsening of the exhaust emission values ​​and, possibly, to a perceived power loss for the driver

Likewise, a so-called rich flameout can result, for example due to an excessively high fuel quantity, which can lead to damage to individual components of the internal combustion engine.

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