Vehicle, gearbox and gearbox control method and device

A gearbox control and control method technology, which is applied to transmission control, components with teeth, belts/chains/gears, etc., can solve problems such as abnormal noise and easy start of dual-mass flywheels, and prevent abnormal knocking Noise, improve vehicle NVH, reduce the effect of angular acceleration

Active Publication Date: 2021-10-29
DONGFENG MOTOR GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a vehicle, a gearbox and a control method and a control device for the gearbox to solve or partially solve the technical problem that the dual-mass flywheel is prone to abnormal starting noise when the vehicle is cold-started in a low-temperature environment

Method used

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  • Vehicle, gearbox and gearbox control method and device
  • Vehicle, gearbox and gearbox control method and device

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Embodiment Construction

[0032] In order to enable those skilled in the technical field to which the application belongs to understand the application more clearly, the technical solutions of the application will be described in detail below through specific embodiments in conjunction with the accompanying drawings. Throughout the specification, unless otherwise specified, terms used herein should be understood as commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, this specification shall take precedence. Unless otherwise specified, various equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0033] The research shows that the reasons for the abnormal sound of the dual mass flywheel at low temperature are as follows: First, when the low temperature cold st...

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Abstract

The invention discloses a control method of a gearbox. The control method is applied to a gearbox control unit comprising a dual-mass flywheel. The dual-mass flywheel comprises a centrifugal pendulum mechanism. The control method comprises the steps of when it is detected that a vehicle starts, acquiring an environment temperature; according to a mapping relation between the environment temperature and a starting required rotating speed and a mapping relation between a preset environment temperature and the starting required rotating speed, determining a target starting required rotating speed, wherein the mapping relation between the preset environment temperature and the starting required rotating speed includes that the starting required rotating speed is increased along with reduction of the environment temperature; and sending the target starting required rotating speed to an electronic control unit (ECU) of an engine. By means of the control method, the circumstance that under the low-temperature starting creeping or crawling work condition of a vehicle, due to too large swing amplitude of a centrifugal pendulum of the dual-mass flywheel, knocking abnormal sounds are generated can be prevented.

Description

technical field [0001] The present application relates to the technical field of vehicle control, and in particular to a vehicle, a transmission, and a control method and control device for the transmission. Background technique [0002] With the continuous improvement of environmental protection and exhaust emission regulations, the miniaturization and high efficiency of engines have become a development trend. In the process of power transmission, the increase of engine power and torque will inevitably increase the output vibration excitation. If better vibration reduction measures are not taken, the comfort of the whole vehicle will be seriously reduced. Matching an efficient damping mechanism has become an urgent need. [0003] Dual-mass flywheel is the most effective damping mechanism at present. Although it is gradually popularized in automobiles, it is still a new technology. In terms of reliability and the matching of vehicle noise, vibration and acoustic-vibration ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/04F16H63/50F16H59/64
CPCF16H61/0437F16H63/50F16H63/502F16H59/64
Inventor 卢学健张文响沈波张文龙谢秀全
Owner DONGFENG MOTOR GRP
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