Method and device for controlling a drivetrain of a vehicle

A powertrain and vehicle technology, which is applied to power units, control devices, road vehicle drive control systems, etc., can solve problems such as large fuel consumption, and achieve the effects of increasing fuel consumption and reducing exhaust gas temperature.

Active Publication Date: 2011-01-12
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Enrichment of the air / fuel mixture for component protection results in greater fuel consumption than would be required to operate at the requested power

Method used

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  • Method and device for controlling a drivetrain of a vehicle
  • Method and device for controlling a drivetrain of a vehicle
  • Method and device for controlling a drivetrain of a vehicle

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Experimental program
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Embodiment Construction

[0027] figure 1 A method for controlling a vehicle powertrain system is shown in . The method starts at step 101 . In step 102, it is checked whether the detected exhaust gas temperature exceeds a threshold value. If the threshold is not exceeded, then the drive device is run with a normal drive strategy as shown in step 103 . In step 104 the method ends. When, in step 102 , the temperature of the exhaust gas exceeds a threshold value, then the method branches in order to prevent a further increase in temperature. In a next step 105 , the state of charge of the battery is checked in order to be able to decide which other strategy can be used to avoid an increase in the temperature of the exhaust gas. If the state of charge of the battery is high in step 105 , then in step 106 the proportion for generating the drive torque by means of the additional engine is increased, thus preventing a further increase in the temperature of the exhaust gas. If the state of charge of the ...

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PUM

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Abstract

The invention relates to a method and a device for controlling a drivetrain of a vehicle, particularly a hybrid vehicle. The drivetrain comprises at least two drive units. One drive unit is an internal combustion engine (202), the other is another motor (204). A temperature value representing the exhaust gas temperature of the internal combustion engine is detected. The proportion for generating the drive torque by means of the another motor is set as a function of the exhaust gas temperature such that a greater proportion of the driving torque is generated by means of the another motor at higher exhaust gas temperatures than at lower exhaust gas temperatures.

Description

technical field [0001] A hybrid vehicle has at least two drive devices. At most one internal combustion engine and at least one electric machine are used as drives. However, other drives such as gas engines or hydraulic engines are also conceivable. The subject of the invention is a drive train with at least two drive units, one of which is to be an internal combustion engine and the other a further engine. The overall drive torque of the drivetrain consists of the torque of the internal combustion engine and of the further engine, in particular the electric machine. Background technique [0002] A hybrid vehicle and a corresponding drivetrain are known from DE 10 2005 039 316, in which a drive unit is controlled as a function of the exhaust gas temperature. In order to increase the load and thus heat up the internal combustion engine more quickly, the electric machine is driven by a generator. As a result, the duration of warm-up operation of the internal combustion eng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/02B60W10/06B60W10/08B60W20/00B60W50/00
CPCY02T10/54Y02T10/6286B60L2240/423F02D2041/026F02D2200/0606B60Y2300/476B60W10/06B60K6/48B60W2710/083B60W20/00B60W2710/0666F01N2560/06B60W2510/068F02D41/0235Y02T10/642B60L2240/445B60W10/08Y02T10/6221F02D41/0255Y02T10/40Y02T10/62Y02T10/64B60W20/10
Inventor D·海因里克C·沃尔G·菲尔普D·斯塔夫里亚诺斯
Owner ROBERT BOSCH GMBH
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