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Integrated commercial vehicle AMT rear auxiliary synchronizer and control method

An integrated, commercial vehicle technology, applied in the control device, transmission control, clutch and other directions, can solve the problems of improper control, shifting shock, asynchronous shock, etc., to reduce the number of parts and reduce the effect of shifting shock

Inactive Publication Date: 2020-11-27
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the influence of the dimensional chain tolerance of the assembly of mechanical parts, if the solenoid valve control mode is ON / OFF (full open or fully closed) control during the gear shifting process of the rear auxiliary box, it is easy to have a gear shift shock phenomenon. This problem is due to Improper control of the AMT gear shifting process, when the shifting gears of the current gear and the target gear do not reach the same speed, the gear is shifted into the target gear, resulting in the phenomenon of "asynchronous shock"

Method used

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  • Integrated commercial vehicle AMT rear auxiliary synchronizer and control method
  • Integrated commercial vehicle AMT rear auxiliary synchronizer and control method
  • Integrated commercial vehicle AMT rear auxiliary synchronizer and control method

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] Such as figure 1 As shown, the existing rear sub-box synchronizer realizes the high / low gear switching of the rear sub-box, and the rear sub-box synchronizer assembly includes two sets of cone rings (low-grade cone ring 2 and high-grade cone ring 6), two sets of synchronization rings ( High-grade synchronous ring 5 and low-grade synchronous ring 7), a sliding sleeve (sliding tooth sleeve 4) and a low-grade conical hub (low-grade conical hub 1), this assembly is assembled on the gearbox output shaft (ie planet carrier).

[0016] The assembly relationship is described as follows:

[0017] Gear shifting execution part: rear auxiliary box cylinder shaft and cylinder piston are connected by bolts, cylinder shaft and shift fork are connected by 2 fastening screws, shift fork is set in shifting groove of sliding gear sleeve through shifting bl...

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Abstract

The invention relates to an integrated commercial vehicle AMT rear auxiliary synchronizer and a control method. According to the synchronizer, a low-gear conical ring and a low-gear conical hub are made into an integrated structure, and in the aspect of the assembly relation, the influence of the part number and the dimensional chain tolerance during assembly ON the control precision is reduced. The adopted control method comprises the steps that electromagnetic valve ON / OFF control is changed into PWM control, the cylinder cavity pressure of a gear shifting execution cylinder at different motion stages is adjusted by selecting different PWM pulse widths, and therefore the purpose of adjusting the motion speed of a gear shifting execution mechanism is achieved.

Description

technical field [0001] The invention relates to an electronic control system of an AMT transmission, in particular to an integrated commercial vehicle AMT rear auxiliary synchronizer and a control method. Background technique [0002] At present, most of the rear auxiliary box synchronizer assemblies in the medium and heavy truck commercial vehicle market (such as figure 1 As shown) includes two sets of cone rings (high and low gears,), two sets of synchronous rings, a sliding sleeve and a low gear cone hub. In most cases, the control strategy is solenoid valve ON / OFF (fully open or fully closed) control, During the gear shifting process, the synchronous force applied by the gear shift actuator in each time period is basically the same. [0003] Due to the influence of the dimensional chain tolerance of mechanical parts assembly, during the shifting process of the rear auxiliary box, if the solenoid valve control mode is ON / OFF (full open or fully closed) control, shifting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/04F16D23/02B60K17/02
CPCB60K17/02F16D23/02F16H61/0403
Inventor 刘伟忠高远飞陈大伟杨健冉淼
Owner DONGFENG COMML VEHICLE CO LTD
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