Method and device for physical simulation of shift fork

A technology of physical simulation and position information, applied in the field of shifting forks, can solve the problems of simulating the shifting forks, prolonging the development cycle of TCU software, and failing to expose the loopholes in the control and diagnosis scheme of the shifting forks, so as to achieve the effect of improving the accuracy.

Active Publication Date: 2019-11-01
SAIC MOTOR
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  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the existing fork physical simulation method cannot simulate the working process of the fork well, resulting in the inability to expose the loopholes in the control and diagnosis scheme of the fork in the TCU software development stage, which prolongs the development cycle of the TCU software

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  • Method and device for physical simulation of shift fork
  • Method and device for physical simulation of shift fork
  • Method and device for physical simulation of shift fork

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Embodiment Construction

[0047] The existing physical simulation method of shift fork cannot simulate the working process of the shift fork well, resulting in the inability to expose the loopholes in the shift fork control and diagnosis scheme during the TCU software development stage, resulting in the need for repeated testing during the TCU software development process, making the TCU The software development cycle is extended.

[0048] In view of the above problems, the embodiment of the present invention provides a physical simulation method of the shift fork, which divides the working process of the shift fork into at least two working stages according to the position information of the shift fork in advance, and calculates the time period of each cycle of the shift fork in different working stages. The position information of the inner shift fork can more accurately simulate the working process of the shift fork, and can accurately expose the loopholes in the shift fork control and diagnosis sche...

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Abstract

The invention discloses a physical simulation method and device for a shifting fork. The method comprises the following steps that when data information of a logic valve, a pressure valve and a flow valve in a shifting fork hydraulic system is received, the shifting fork to be simulated is determined to be used as a current simulation shifting fork; the action direction of a piston rod in a hydraulic cylinder of the current simulation shifting fork is determined; the position information of the current simulation shifting fork in the current period is calculated; when the working parameters ofthe current simulation shifting fork in the current working stage meet the shifting fork moving condition corresponding to the current period, the position information of the current simulation shifting fork in the next period is calculated, until the current displacement of the current simulation shifting fork reaches the maximum displacement value; and the position information of the current simulation shifting fork in each period is outputted. By applying the scheme, the accuracy of the physical simulation of the shifting fork can be improved, so that the development period of TCU softwarecan be shortened.

Description

technical field [0001] The invention relates to the technical field of shift forks, in particular to a physical simulation method and device for a shift fork. Background technique [0002] Dual-clutch automatic transmission is a complex system that interacts with mechanical, electronic, and hydraulic systems. During the process of upshifting and downshifting, the power of the engine is transmitted to the wheels without interruption through the interaction between the shift fork pre-engaged gear and the clutch. Realize power shift. [0003] The shift fork control of the dual-clutch automatic transmission is to push the synchronizer in the shift fork to achieve speed synchronization under the joint action of the pressure solenoid valve, flow solenoid valve and logic valve, and finally complete the shift fork shifting and shifting. The shift fork control of dual-clutch automatic transmission is an important part of the automatic transmission control unit (Transmission ControlU...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/40F15B11/16F16H63/30
CPCF15B11/16F16H61/40F16H63/3023
Inventor 郑军周福全易飞孙铎欧阳伟王禺寒焦伟
Owner SAIC MOTOR
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