Method and device for carrying out an adaptation and a diagnosis of emission-relevant control devices in a vehicle

A control device and vehicle technology, applied in electrical control, engine control, fuel injection control, etc., can solve unknown problems and achieve the effect of simple adjustment

Inactive Publication Date: 2010-10-06
CONTINENTAL AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] To date, no strategy is known from the prior art that must be activated separately for matching and diagnosis

Method used

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  • Method and device for carrying out an adaptation and a diagnosis of emission-relevant control devices in a vehicle
  • Method and device for carrying out an adaptation and a diagnosis of emission-relevant control devices in a vehicle
  • Method and device for carrying out an adaptation and a diagnosis of emission-relevant control devices in a vehicle

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Embodiment Construction

[0024] exist figure 1 In FIG. 1 , firstly, a schematic diagram is shown which shows the diagnosis of the emission-related control device or the execution of the first “coarse” adjustment at the beginning of the driving situation. Here, in the driving state (the driving state has eg t Test In a step size of a preset test cycle = 20 min), the diagnostics are carried out in the individual cylinders 1 to 8 of the vehicle engine.

[0025] However, in addition to the diagnosis of all cylinders 1-8, an incomplete adaptation or fine-tuning of all cylinders 1-8 can often be carried out, since the driving state (for example, thrust cut-off phase is usually not long enough for this. In the present case in, as in figure 1 As shown in the example test cycle time t Test Sufficient for diagnostics or initial "rough" tuning of all eight cylinders 1-8 of the vehicle engine. However, the test cycle time t TestIt is no longer sufficient to also perform an adaptation of cylinders 1-8. In ot...

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Abstract

The aim of the invention is to provide a method and a device which allow carrying out of at least part of the adaptation and the diagnosis of a defined driving mode. This aim is achieved by the method and the device of the invention for carrying out at least part of an adaptation and a diagnosis of emission-relevant control devices of a vehicle. The method according to the invention comprises the following steps: determining whether the vehicle has reached a defined driving mode, carrying out a diagnosis of at least one of the emission-relevant control devices once it is detected that the vehicle has reached the defined driving mode, the diagnosis determining and optimizing at least one parameter of an operating point of at least one emission-relevant control device if said parameter deviates from a set range or a set value; and carrying out at least one adaptation step of the adaptation of at least one emission-relevant control device, at least one parameter of a plurality of operating points of the emission-relevant control devices being determined and optimized during said adaptation if said parameter deviates from a set range or a set value.

Description

technical field [0001] The invention relates to a method and a device for carrying out both adaptation and diagnosis of an emission-related control device in a vehicle, for example injecting fuel into each cylinder. Background technique [0002] On emission-related control devices in motor vehicles, various methods for detecting errors are implemented for legal reasons. For the various strategies, the law requires a specific implementation frequency per driving cycle. In this case, a new driving cycle begins with a restart of the engine (neustart) (after the ignition key has been switched off previously) and ends with the start of the subsequent driving cycle. In this case, the driving cycle usually consists of different driving states, some of which are more or less suitable for diagnosis and adaptation purposes. Thrust cut-off (Schubabschaltung) is associated with specific diagnoses and matches. The longer the driving cycle lasts, the longer the generally required drivi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/12F02D41/14F02D41/22
CPCF02D41/123F02D41/1402F02D41/221
Inventor C-E·霍夫梅斯特M·卡斯鲍尔
Owner CONTINENTAL AUTOMOTIVE GMBH
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