Method and device for determining an operating characteristic of an injection system

A technology of injection system and operation characteristics, applied in the direction of fuel injection control, electrical control, combustion engine, etc., can solve problems such as difficulty in manufacturing tolerance injection quantity
CN101553653BInactive Publication Date: 2013-03-27CONTINENTAL AUTOMOTIVE GMBH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CONTINENTAL AUTOMOTIVE GMBH
Publication Date
2013-03-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

In a method and a device for determining an operating characteristic of an injection system, to determine an operating characteristic (30) of an internal combustion engine (1) that is charged by a turbocharger (4), the method has the following steps: A) carrying out a pilot injection of fuel into a cylinder (51, 52, 53, 54) of the internal combustion engine using the injection system (30); B) determining an operating parameter of the turbocharger (40); C) determining an operating characteristic of the injection system (30) using the operating parameter of the turbocharger (40) previously determined.
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Description

technical field

[0001] The invention relates to a method for determining an operating characteristic of an injection system of an internal combustion engine and a control device for carrying out the method. Background technique

[0002] In modern internal combustion engines, in order to obtain the best possible exhaust gas values, it is important to realize the predetermined fuel injection quantity precisely. Furthermore, in the case of multi-cylinder engines, the aim is to inject the same amount of fuel as possible into all cylinders in order to achieve the smoothest possible engine running. In this case, the injection pattern on which the injected fuel quantity is based should also be of the same type, ie the same number of pre-injections, main injections and post-injections per cylinder. For example, if the injection pattern per cylinder consists of only one main injection per working cycle, then for a predetermined operating point of the internal combustion engine it is...

Claims

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