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Method for operating drive train of motor vehicle

A technology for powertrain and motor vehicles, which is applied to machines/engines, multi-gear ratio transmissions, mechanical equipment, etc., and can solve problems such as overloading of transmission facilities and transmission damage.

Active Publication Date: 2019-03-05
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially heavy towing operations can lead to overloading of the transmission system, which can cause damage to the transmission

Method used

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  • Method for operating drive train of motor vehicle
  • Method for operating drive train of motor vehicle
  • Method for operating drive train of motor vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] specific implementation

[0030] figure 1 A schematic diagram of a motor vehicle 30, in particular a tractor or tractor, is shown. The drive train 1 comprises a drive unit 2 of a motor vehicle 30 and a transmission 4 connected between the drive unit 2 and the output device 3 , which is implemented in a group configuration. The drive unit 2 is implemented as an internal combustion engine. The output device 3 includes an axle gear 6 and a drive axle 7 , by which the drive movement of the drive machine 2 converted by the transmission arrangement 4 is distributed to the two wheels 32 of the drive axle 7 . Furthermore, a steerable front axle with wheels 31 is also provided.

[0031] In the exemplary embodiment shown, the transmission 4 comprises a power shift group 7 , a crawler gear group 8 and a synchronizing group 9 , wherein between the crawling gear group 8 and the synchronizing group 9 a launch clutch 10 , which is also referred to as the main clutch, is connected. ...

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PUM

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Abstract

The invention relates to a method for operating a drive train (1) of a motor vehicle, in particular an agricultural or municipal utility vehicle, wherein the drive train (1) comprises a drive unit (2)and a gear arrangement (4) comprising a creeper gear group (8) and a PTO transmission module (11) for driving at least one power take-off shaft (13), wherein the insertion of a creeper in a creeper gear set (8) is detected. In order to protect the gear assembly (4) when detected creep ratio from overloading, due to a detected engagement of a crawl, one of the drive unit (2) output drive torque isautomatically reduced to an operating torque, wherein upon detection of commissioning of the PTO (11) the presence of a to be driven load on the at least one power take-off shaft (13) is determined,wherein an adjustment of the output from the drive unit (2) drive torque is performed in dependence on the specific load.

Description

technical field [0001] The present invention relates to a method for operating a powertrain system of a motor vehicle, in particular of an agricultural or municipal commercial vehicle, comprising a drive unit, a transmission with a crawler gear unit and a drive unit for driving at least a A PTO transmission module of an auxiliary output shaft (PTO) and including an output device in which engagement of a crawler gear is detected. Furthermore, the invention relates to a controller for a motor vehicle powertrain, a computer program product and a data carrier with said computer program product. Background technique [0002] Motor vehicles, in particular agricultural or municipal work or commercial vehicles, often have a drive train comprising a transmission system constructed in a group structure, which consists of a plurality of partial transmissions. In order to be able to cover the wide range of tasks of these motor vehicles, such a drive must be able to handle a large numbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H63/50F02D41/04F16H61/20F16H59/36F16H59/68
CPCF02D41/04F16H59/36F16H59/68F16H61/20F16H63/50F16H59/70B60Y2200/20F16H2200/0004F16H2312/06F02D41/0225F02D2200/1002F02D2250/26
Inventor 汉斯·皮尔兹韦格迈克尔·默尔京特·米歇尔贝格尔
Owner ZF FRIEDRICHSHAFEN AG