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Method and apparatus for identifying engaged gear ratios

A technology of variable speed ratio and engagement state, applied in transmission control, components with teeth, belts/chains/gears, etc., which can solve problems such as loss of variable speed ratios

Active Publication Date: 2017-09-05
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It is known to use a strategy of identifying the engaged gear ratio of the gearbox as zero (corresponding to dead point) when the driver depresses the clutch pedal (corresponding to disengaged), since the drivetrain is estimated to be disconnected, which results in a loss of the estimated gear ratio

Method used

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  • Method and apparatus for identifying engaged gear ratios
  • Method and apparatus for identifying engaged gear ratios
  • Method and apparatus for identifying engaged gear ratios

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Embodiment Construction

[0039] The invention relates to synchronizing a clutch signal acquired by a binary sensor located on a clutch pedal of a vehicle with an estimated gear ratio signal calculated from vehicle driving parameters such as engine speed and vehicle speed, among others. figure 1 The state diagram of , indicates the operation of the method and apparatus according to the present invention.

[0040] The signal acquired by the binary sensor is a signal indicative of the engaged or disengaged state of the pedal. A slight depression of the pedal results in the transition to the disengaged state. Within the scope of this description, the term "observation of the engagement bit" means that a transition from the disengaged state to the engaged state is detected in the signal acquired by the clutch sensor. The information provided by the engage bit is only asserted after a delay period has elapsed, or when a new estimate of the gear ratio becomes available during this period. Conceptually, the...

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Abstract

The invention relates to a method for recognising an engaged gear ratio R of the manual gearbox of a motor vehicle provided with a heat engine and a binary gear engagement sensor. The recognition of a gear ratio uses the binary information indicating the state of engagement, and the estimation of a gear ratio. The method allows said information to be synchronised in order to reliably recognise an engaged gear ratio. The invention also relates to a device for implementing said method as well as to a motor vehicle provided with such a device.

Description

technical field [0001] The invention relates to the field of control devices for operating motor vehicles. More specifically, the invention relates to a method and a device for identifying the gear ratio of a manual gearbox of a motor vehicle equipped with an internal combustion engine. Background technique [0002] On motor vehicles equipped with thermal power systems GMP, manual type gearboxes and with-without binary clutch sensors placed on the clutch pedal, it is known to use component steering systems. The purpose of such a system is to automatically adapt the type of operation of each of the vehicle components to suit the driver's wishes. The driver's intention is expressed in a known manner by the degree of depression of the accelerator pedal of the vehicle. [0003] In order to follow the driver's wishes, the internal combustion engine control uses the engaged gear ratio in a known manner in the calculation of, for example, the effective torque, the driving comfort...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H59/70F16H59/68
CPCF16H59/70F16H61/682F16H2059/6807F16H2059/706
Inventor J·查尔斯M·托马斯
Owner PEZHO SITROEN AUTOMOBILS SA