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Method for operating a powertrain system of a 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 transmission damage and overloading of transmission facilities.

Active Publication Date: 2022-01-04
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 a powertrain system of a motor vehicle
  • Method for operating a powertrain system of a motor vehicle
  • Method for operating a powertrain system of a motor vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029]specific implementation plan

[0030] figure 1 A schematic view 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 system 4 connected between the drive unit 2 and the output unit 3 , which is embodied in a group structure. The drive unit 2 is embodied as an internal combustion engine. The output device 3 includes an axle drive 6 and a drive axle 7 , wherein the drive movement of the drive machine 2 converted by the transmission system 4 is distributed via the axle drive 6 to the two wheels 32 of the drive axle 7 . Furthermore, a steerable front axle with wheels 31 is provided.

[0031] In the exemplary embodiment shown, the transmission system 4 comprises a power shift group 7 , a crawler group 8 and a synchronous group 9 , wherein a starting clutch 10 , also referred to as main clutch, is connected between the crawler group 8 and the synchronous group 9 . The star...

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PUM

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Abstract

The invention relates to a method for operating a powertrain (1) of a motor vehicle, wherein the powertrain comprises a drive unit (2) and a transmission (4) with a crawler gear group (8) and A power take-off shaft transmission module (11) for driving at least one auxiliary output shaft (13), wherein the engagement of a creeper gear in a creeper gear group (8) is detected. In order to prevent overloading of the transmission facility (4) in the event of detection of a creeper gear ratio, the drive torque output by the drive unit (2) is automatically reduced to the operating torque upon detection of a creeper gear Determining the presence of a load to be driven on at least one auxiliary output shaft (13) while the output shaft transmission module (11) is in operation, wherein the drive torque output by the drive unit (2) is determined in dependence on the determined load adjustment.

Description

technical field [0001] The invention relates to a method for operating a drivetrain of a motor vehicle, in particular an agricultural or municipal (kommunalen) commercial vehicle, which comprises a drive unit, a transmission with a crawler gear set and a drive for at least A PTO transmission module of an auxiliary output shaft (PTO) and includes an output device, wherein the engagement of a creeper gear is detected. Furthermore, the invention relates to a controller for a motor vehicle drivetrain, a computer program product and a data carrier having said computer program product. Background technique [0002] Motor vehicles, in particular agricultural or municipal work or commercial vehicles, often have a drivetrain with a drive system configured in a group structure, which is composed of a plurality of subdrives. In order to be able to cover the wide range of tasks of these motor vehicles, such transmissions must be able to handle a wide range of demands from working or pl...

Claims

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Application Information

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Patent Type & Authority Patents(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