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Three-section hydraulic mechanical continuous stageless transmission device and method thereof

A hydraulic mechanical and stepless transmission technology, which is applied in transmission devices, fluid transmission devices, mechanical equipment, etc., can solve the problems of unfavorable system volume and weight, complex system structure, etc., achieve reduced noise, good traction capacity, and improved fuel economy sexual effect

Active Publication Date: 2012-07-04
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0003] At present, foreign research on multi-stage hydraulic-mechanical continuous stepless transmission systems is mainly based on the two-stage mode, and there are few inventions about the three-stage mode, and the scheme of the three-stage mode is constructed on the basis of at least three planetary rows, resulting in The whole system structure is relatively complex, which is not conducive to improving system efficiency and reducing system volume and weight

Method used

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  • Three-section hydraulic mechanical continuous stageless transmission device and method thereof
  • Three-section hydraulic mechanical continuous stageless transmission device and method thereof
  • Three-section hydraulic mechanical continuous stageless transmission device and method thereof

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Embodiment Construction

[0029] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0030] In this embodiment, the three-stage hydraulic mechanical continuous stepless transmission device and method are applied to urban buses, such as figure 1 As shown, the device includes planetary transmission parts (k1 planetary row and k2 planetary row), hydraulic speed regulating parts (speed regulating element H1 and speed regulating element H2), shifting control parts (clutch C1, clutch C2, brake B1 and brake B2). In this embodiment, both the speed regulating element H1 and the speed regulating element H2 adopt hydraulic variable speed pumps, and the hydraulic stepless speed regulation of the transmission device is realized through a closed hydraulic transmission circuit and two-way variable control.

[0031] The connection relationship is as follows: one end of the input shaft 23 of the transmission device is connected with the engine 1 to provid...

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Abstract

The invention discloses a three-section hydraulic mechanical continuous stageless transmission device and a method thereof. The three-section hydraulic mechanical continuous stageless transmission device comprises a planet transmission part, a hydraulic speed regulation part and a section change operation part. The whole device uses two planet rows as basis to reasonably control reunion or separation of the section change operation part and smoothly join a speed-division moment-converge flow-split mode, a speed-division speed-converge flow-split mode and a moment-division speed-converge flow-split mode to fully develop performance advantages of all flow-split modes. In addition, the transmission device can achieve a reverse-gear pure hydraulic work condition and pure mechanical transmission work condition of two fixed gears. The transmission device has the advantages of being simple in structure, continuous in stepless speed change, good in starting characteristics, small in system volume, small in mass and the like.

Description

technical field [0001] The invention relates to a stepless transmission device and method, in particular to a three-stage hydraulic-mechanical continuous stepless transmission device and method, belonging to the field of power transmission. Background technique [0002] The vehicle transmission system is an important part of the vehicle propulsion system, and its performance has a great impact on the power, fuel economy, emissions and reliability of the entire vehicle. The multi-stage hydraulic mechanical continuous stepless transmission system has the advantages of wide stepless speed regulation range, good starting characteristics and high transmission efficiency. It can optimize the working state of the engine according to the road surface conditions, so that the vehicle can obtain the best driving performance. It is an ideal transmission form that can meet the requirements of vehicle economy, power and comfort. This is of great significance in the 21st century where ene...

Claims

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Application Information

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IPC IPC(8): F16H47/04
Inventor 胡纪滨彭增雄李雪原荆崇波魏超刘洪
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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