Method and device for adapting and/or diagnosing an internal combustion engine disposed in a hybrid vehicle

A technology for hybrid electric vehicles and internal combustion engines, which is applied in the directions of hybrid electric vehicles, power units, pneumatic power units, etc., can solve the problems of long diagnosis time, limitation, etc., and achieves reduction of diagnosis cost, simple adaptive processing method and/or diagnosis method Effect

Inactive Publication Date: 2012-05-23
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The diagnosis or adaptation of the internal combustion engine in hybrid vehicles is currently limited by the fact that only specific load states of the internal combustion engine can be achieved on the test bench
Furthermore, specific operating points should only be reached by commissioning, which leads to long diagnostic times

Method used

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  • Method and device for adapting and/or diagnosing an internal combustion engine disposed in a hybrid vehicle
  • Method and device for adapting and/or diagnosing an internal combustion engine disposed in a hybrid vehicle

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Embodiment Construction

[0029] figure 1 A hybrid vehicle in the form of a parallel hybrid is shown. In this refinement, electric motor 1 is arranged on drive shaft 2 of internal combustion engine 3 . The internal combustion engine 3 is connected to the electric motor 1 via a separating clutch 4 . The electric motor 1 is guided via a starter clutch 5 to a torque converter 6 , which is connected to a transmission 7 . The transmission 7 leads to an axle 8 on which are arranged wheels 9 , 10 which are driven by the described drive train.

[0030] The electric motor 1 is powered by a high-voltage battery 11 , and the high-voltage battery 11 is connected to the electric motor 1 through an inverter 12 . The electric motor 1 and the internal combustion engine 3 are controlled by a controller 13 . The control device 13 includes a memory 14 in which characteristic curves for different operating parameters are stored and the current operating parameters are stored for further processing. For this purpose, ...

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Abstract

The invention relates to a method for adapting and / or diagnosing an internal combustion engine (3) disposed in a hybrid vehicle, forming a drive unit (1, 3) with at least one secondary machine (1). In order to allow a more rapid and simple adaptation and / or diagnostic method of the internal combustion engine (3), a positive or negative drive torque is applied to the internal combustion engine (3) by the secondary machine (1) for setting various operating modes of the internal combustion engine (3), and at least one operating parameter of the internal combustion engine (3) is determined at a set operating point.

Description

technical field [0001] The invention relates to a method for adapting and / or diagnosing an internal combustion engine arranged in a hybrid vehicle, the internal combustion engine forming a drive unit together with at least one servo machine, and a device for carrying out the method. . Background technique [0002] A motor vehicle with a hybrid drive has an internal combustion engine and a servomotor, that is, in most cases an electric motor. During driving operation of the hybrid vehicle, a drive torque is therefore applied by the two drive assemblies. For such a hybrid, the internal combustion engine is mechanically coupled to a servo machine. This coupling takes place either directly or via a transmission. The servo machine in the form of an electric motor can be operated either as a motor or as a generator. As an energy store, a high-voltage battery is available, which is discharged when the electric motor is used as drive train drive or charged during generator opera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/08B60W20/00B60K6/48B60W50/04
CPCY02T10/6286B60L2240/423B60W2510/0685B60W2510/0628B60W10/06B60W50/04B60W2710/0605B60K6/48B60W2530/14B60W2710/083B60W20/00B60L2240/443B60W2710/0666B60W2710/0644Y02T10/642B60W10/08Y02T10/6221B60W2510/0657B60Y2400/435B60W20/50B60W2556/10Y02T10/62Y02T10/64B60W10/192B60W20/13
Inventor G.马勒布雷因A.贝特曼
Owner ROBERT BOSCH GMBH
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