Clutch control method in vehicle braking and parking processes

A technology of clutch control and vehicle braking, applied in the direction of clutch, mechanical equipment, etc., to ensure the effect of driving performance

Active Publication Date: 2019-04-12
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Accurate control of the actual torque transmitted by the clutch under different operating conditions has always been a blind spot in the control strategy

Method used

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  • Clutch control method in vehicle braking and parking processes
  • Clutch control method in vehicle braking and parking processes
  • Clutch control method in vehicle braking and parking processes

Examples

Experimental program
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Embodiment Construction

[0041] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be combined with figure 1 And specific embodiments are described in detail.

[0042] figure 1 Is a schematic flowchart of a clutch control method during a braking and parking process of a vehicle provided by an embodiment of the present invention; figure 2 It is a schematic diagram of a curve of a clutch control method during a braking and parking process of a vehicle provided by an embodiment of the present invention. Such as figure 1 with figure 2 As shown, the clutch pressure control method during vehicle braking and parking provided by the embodiment of the present invention includes the following steps:

[0043] S101. Perform real-time monitoring of monitoring information, the monitoring information including gear status, braking signal, maximum clutch pressure within a preset time before the monitoring time, clutch speed, engi...

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Abstract

The invention provides a clutch control method in the vehicle braking and parking processes. The clutch control method comprises the steps that monitoring information is monitored in real time and comprises a gear state, a braking signal, the maximum clutch pressure in the preset time before the monitoring time, the clutch rotating speed, the engine rotating speed and the engine target idling speed; if the monitoring information monitored at the current monitoring time meets all pressure dynamic compensation determination conditions, command pressure of a clutch meeting the compensation determination conditions is compensated; and when the monitoring information monitored at the current monitoring time meets any pressure dynamic compensation exiting determination condition, the command pressure of the compensated clutch stops being compensated. Through real-time compensation of the command pressure of the current clutch, torque transmission of the current working clutch is controlled precisely, and thus a vehicle has good driving performance.

Description

Technical field [0001] The invention relates to a clutch control method, in particular to a clutch control method of a wet dual-clutch automatic transmission during vehicle braking and parking. Background technique [0002] As an automatic transmission solution, the wet dual clutch transmission has been widely recognized by users in China. In this transmission system, the role of the dual clutch is to reasonably and accurately transmit the torque of the engine to the subsequent transmission components. The precise control of the torque transmitted by the dual clutches is the basis for ensuring the normal execution of crawling, starting, shifting, and pre-separation of the entire transmission system. The control of the torque transmitted by the dual clutches is generally controlled and adjusted by two schemes, namely, hydraulic mechanism adjustment and motor mechanism adjustment. The hydraulic mechanism controls the pressure of the clutch oil pressure chamber in the hydraulic me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/06
CPCF16D48/066F16D2500/1026F16D2500/1107F16D2500/3024F16D2500/3041F16D2500/3067F16D2500/308F16D2500/50287F16D2500/70217
Inventor 董宇王明玉李长洲朱桂庆刘国栋王歆誉
Owner CHINA FIRST AUTOMOBILE
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