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Method and control device for selecting gearbox gear in automobile transmission chain

A technology of gearbox gears and transmission chains, applied in transmission control, components with teeth, belts/chains/gears, etc., to achieve good efficiency

Active Publication Date: 2019-10-01
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is limited to constant or approximately constant driving conditions and can therefore only be used conditionally

Method used

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  • Method and control device for selecting gearbox gear in automobile transmission chain
  • Method and control device for selecting gearbox gear in automobile transmission chain
  • Method and control device for selecting gearbox gear in automobile transmission chain

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Abstract

The invention relates to a method for selecting a gear position of a gearbox (14) in an automobile transmission chain (1). The method comprises the steps of obtaining (30, 40, 50) the wheel desired torque (M RW ) or expected driving power; calculate (31, 41, 51) the transmission chain parameters of at least two gears of the gearbox and according to the calculated transmission chain parameters; when considering the wheel desired torque (M RW ) or said desired driving power, select (33, 44, 54) a set gear.

Description

technical field The invention relates to a method and a control device for selecting gear positions of a gearbox in an automobile transmission chain. Furthermore, the invention relates to a motor vehicle with a gearbox and such a control device. Background technique At present in most conventional automatic vehicles, an engine torque to be set by the automatic vehicle engine is determined by the number of revolutions of the electric motor and the position of the accelerator pedal, for example, by means of the driver's desired engine-integrated characteristic curve. Regardless of the engine torque to be set, the driving speed of the automatic vehicle and the position of the accelerator pedal are simultaneously given a transmission ratio or adjusted gear. In this case, the actual wheel torque is given as the product of the transmission ratio and the engine torque. The wheel torque is therefore influenced not only by the engine control, but also by the transmission control, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H59/18F16H59/66
CPCF16H59/18F16H59/66F16H2059/663F16H59/44F16H61/0213F16H2059/148F16H2061/0216F16H2059/147
Inventor J·赖林G·瓦克斯穆特
Owner VOLKSWAGEN AG