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Method and control device thereto for operating a powertrain

A technology of power train and driving device, which is applied in the direction of transmission device, transmission device control, fluid transmission device, etc., and can solve problems such as unreliability

Active Publication Date: 2015-09-16
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far it has not been possible to do this monitoring reliably

Method used

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  • Method and control device thereto for operating a powertrain
  • Method and control device thereto for operating a powertrain

Examples

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Embodiment Construction

[0018] The invention relates to a method for operating a drive train of a motor vehicle and a control device for carrying out the method.

[0019] figure 1 A schematic diagram of a drive train of a motor vehicle is shown, the drive train comprising a drive 1 , an automatic transmission 2 and an output 3 , wherein the automatic transmission 2 with a plurality of shifting elements 4 is connected between the drive 1 and the output 3 , and the tractive power supply of the drive device 1 is provided to the driven end 3 . figure 1 The drive train of the engine comprises a torque converter 5 as a starting element, in which a turbine 7 and an impeller 8 are schematically shown. A torque converter jumper clutch 6 is connected in parallel with the torque converter 5 .

[0020] At least one of the shift positions N (neutral), P (park), D (forward) and R (reverse) can be selected for the automatic transmission 2 via the transmission selector lever 9 . The operation of the automatic tra...

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PUM

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Abstract

Method for operating a drive train, which includes a drive unit (1), a converter (5) as the start-up element, an automatic transmission (2) and an output (3), whereas, after the start of the drive unit (1), the rotational speed of a turbine (7) of the converter (5) is monitored, whereas, if it is thereby determined that, within a defined first time frame after the start of the drive unit (1), the rotational speed of the turbine (7) of the converter (5) reaches or exceeds a first threshold value, a properly filled converter (5) is inferred, whereas, if, within the defined first time frame after the start of the drive unit (1), the rotational speed of the turbine (7) of the converter (5) does not reach or exceed a first threshold value, an improperly filled converter (5) or a converter that has run empty (5) is inferred.

Description

technical field [0001] The invention relates to a method for operating a drive train and a control device for carrying out the method. Background technique [0002] figure 1 A schematic diagram showing a drive train of a motor vehicle known from the prior art comprising a drive device 1 and an automatic transmission 2 connected between the drive device 1 and an output 3 , wherein the automatic transmission 2 is designed as an automatic or automated transmission It also has a plurality of shifting elements 4 configured as clutches and / or brakes. A starting element in the form of a torque converter 5 is positioned between the drive 1 and the automatic transmission 2 , to which a torque converter clutch 6 is assigned. exist figure 1 The turbine 7 and the impeller 8 of the torque converter 5 are shown in . figure 1 Also shown is a transmission selector lever 9 and a transmission control device 10 . The operation of the automatic transmission 2 including the torque converter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/12
CPCF16H2061/1276F16H61/12F16H47/06F16H59/72F16H2312/022
Inventor J·阿诺尔德K·施泰因豪泽T·施密特
Owner ZF FRIEDRICHSHAFEN AG