Method for balancing out the differences in the injection quantities between the cylinders in an internal combustion engine
First Claim
1. A method for balancing out the differences in the injection quantities between the cylinders in an internal combustion engine whereby, comprising the step of carrying out, for various operating points of the internal combustion engine, an adaptation of the differences in the injection quantities for at least one selected injection parameter, wherein the dynamics of a selected operating point are limited during the adaptation, and wherein the differences in the injection quantities are determined for the selected operating point and are learned as adaptation values which are assigned to the injection parameter value concerned, and for the purpose of limiting the dynamics the injection parameter is set in such a way that the selected operating point remains essentially static.
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Accused Products
Abstract
In a method for equalizing the differences in injection quantities between the cylinders of a combustion engine, an adaptation of the differences in injection quantities, of the injection curves and of the hydraulic start of injection is carried out for different operating points of the combustion engine for at least one selected injection parameter. During this adaptation, the dynamics of a selected operating point are limited. The differences in injection quantities are determined for this selected operating point and are learned as adaptation values that are assigned to the respective injection parameter. In order to limit the dynamics, the injection parameter is set so that the selected operating point remains essentially stationary.
43 Citations
19 Claims
- 1. A method for balancing out the differences in the injection quantities between the cylinders in an internal combustion engine whereby, comprising the step of carrying out, for various operating points of the internal combustion engine, an adaptation of the differences in the injection quantities for at least one selected injection parameter, wherein the dynamics of a selected operating point are limited during the adaptation, and wherein the differences in the injection quantities are determined for the selected operating point and are learned as adaptation values which are assigned to the injection parameter value concerned, and for the purpose of limiting the dynamics the injection parameter is set in such a way that the selected operating point remains essentially static.
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9. A method for balancing out the differences in the injection quantities between the cylinders in an internal combustion engine whereby, comprising the steps of:
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adapting, for various operating points of the internal combustion engine, the differences in the injection quantities for at least one selected injection parameter, limiting the dynamics of a selected operating point during the adaptation, determining the differences in the injection quantities for the selected operating point, learning the differences as adaptation values, assigning the adaptation values to the injection parameter value concerned, and for the purpose of limiting the dynamics, setting the injection parameter in such a way that the selected operating point remains essentially static. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system for balancing out the differences in the injection quantities between the cylinders in an internal combustion engine whereby, comprising:
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means for adapting, for various operating points of the internal combustion engine, the differences in the injection quantities for at least one selected injection parameter, means for limiting the dynamics of a selected operating point during the adaptation, means for determining the differences in the injection quantities for the selected operating point, means for learning the differences as adaptation values, assigning the adaptation values to the injection parameter value concerned, and means for setting the injection parameter in such a way that the selected operating point remains essentially static. - View Dependent Claims (18, 19)
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Specification