Automatic gear shifting method of hydraulic transmission system

A technology of hydraulic transmission and automatic transmission, which is applied in the direction of transmission, fluid transmission, transmission control, etc., and can solve the problems of frequent shifting, difficulty in determining the timing of shifting, and rising cost of the transmission.

Inactive Publication Date: 2009-11-11
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The increase in the number of transmission gears not only greatly increases the cost of the transmission, but also shifts gears more frequently and the timing of shifting is not easy to determine

Method used

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  • Automatic gear shifting method of hydraulic transmission system
  • Automatic gear shifting method of hydraulic transmission system
  • Automatic gear shifting method of hydraulic transmission system

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Embodiment Construction

[0014] The technical route adopted by the present invention is as follows Figure 5 As shown, a magnetic powder clutch is added between the internal combustion engine and the transmission, and the magnetic powder clutch is connected in parallel with the torque converter. The electronic control unit detects the status of each part of the transmission system and takes corresponding control measures in order to make the hydraulic torque converter work at an efficient point.

[0015] The magnetic powder clutch is mainly composed of the active part, the driven part, the magnetic powder and the excitation coil. The magnetic powder is filled in the working gap between the driving part and the driven part. When the excitation coil is energized, a magnetic field is generated between the driving part and the driven part. Under the action of the magnetic field, the magnetic powder is connected in a chain shape along the magnetic flux direction to form a magnetic powder chain. Torque can be t...

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PUM

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Abstract

The invention provides an automatic gear shifting method of a hydraulic transmission system, aiming at solving the problem that the efficiency of the hydraulic transmission system changes with loads. A combination mode of step regulation and stepless regulation is adopted, wherein the step regulation plays the role of crude regulation, and the stepless regulation plays the role of fine regulation. A mechanical transmission is adopted for crude regulation, and a magnetic powder clutch or a device with similar function is adopted for fine regulation. By a certain algorithm, a hydrotransmitter can be caused to work at a high-efficiency point, thereby achieving the purposes of improving efficiency and saving energy.

Description

Technical field [0001] An automatic transmission method of a hydraulic transmission system relates to the field of mechanical transmission. Background technique [0002] The hydraulic torque converter is a widely used transmission device, which is mainly composed of a pump wheel, a turbine and a guide wheel. The pump wheel is connected to the prime mover, and the turbine is connected to the output device. It is widely used in the transmission system of various vehicles, especially construction machinery. It has many outstanding advantages in the transmission system: it has the ability of continuously variable speed and torque, which makes the transmission system have the ability to automatically adapt; as a kind of flexibility Transmission, it can block the torsional vibration of the engine, reduce the impact vibration and the dynamic load of the drive train, and extend the service life of the transmission components; the structure is simple and reliable, without mechanical wear,...

Claims

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Application Information

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IPC IPC(8): F16H61/00F16H47/06
Inventor 李华姚进
Owner SICHUAN UNIV
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