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Procedure for controlling gear changes in transmissions for vehicle

A gearbox, gearbox control technology, applied in the direction of transmission control, belt/chain/gear, components with teeth, etc.

Inactive Publication Date: 2011-05-11
ZF FRIEDRICHSHAFEN AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are driving situations in which the driver needs to downshift in order to support the vehicle's deceleration, for example when driving downhill, in particular through the braking torque of the engine

Method used

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  • Procedure for controlling gear changes in transmissions for vehicle
  • Procedure for controlling gear changes in transmissions for vehicle

Examples

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Embodiment Construction

[0021] First, when driving forward, gear changes are made in the vehicle's transmission, such as an automated manual transmission, according to an automatic program of the electronic control unit. In a first step a), it is checked whether the driver has requested a gear change by means of a corresponding input to the shifting device. If yes, the intermediate step d) is applied, otherwise the gear change corresponds to the automatic procedure. In step d), a query is then made as to whether the driver has requested a program change via the gearshift. If a program change is required, select the ECU's manual program. In this manual procedure, subsequent gear changes are made in response to the driver's input to the shifter. If not, the subsequent step h) is applied directly to check whether the driver has requested a change to neutral in the gearbox by activating the shifting device. If yes, make a change to automatic procedure, otherwise apply step b).

[0022] In step b), th...

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PUM

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Abstract

The invention refers to a procedure for controlling gear changes in transmissions for vehicles using an electronic control unit, which includes an automatic program and a manual program, wherein the automatic program performs a gear change as a function of recorded vehicle parameters through the electronic transmission control unit, while, when the manual program is selected by the driver, the gear change is performed by the driver corresponding to input from the driver to at least one shift device, and where a return function is envisaged, through which a return from the manual program to the automatic program can be carried out by recording an accelerator pedal setting (XGsp).

Description

technical field [0001] The present invention relates to a method for controlling gear shifting in a gearbox of a vehicle using an electronic control unit, said method comprising an automatic program and a manual program, wherein the automatic program performs gear shifting through the electronic control unit according to recorded vehicle parameters, and when the driver selects In a manual program, a gear change is performed by the driver in response to an input from the driver to at least one shifting device, and wherein a return function is considered, by which a return from a manual program to an automatic program is performed by monitoring the accelerator pedal setting. Furthermore, the invention relates to a gearbox of a vehicle operable according to said method and a computer program product for carrying out the individual steps. Background technique [0002] With automatic transmissions and automated manual transmissions of vehicles, gear changes are usually carried ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H59/02
CPCF16H59/0204F16H61/0213
Inventor 威廉·莫泽温琴佐·阿巴坦托尼
Owner ZF FRIEDRICHSHAFEN AG
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