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Planetary gear multi-way drive stepless speed variator

A technology of continuously variable transmissions and planetary gears, which is applied in the direction of gear transmissions, transmissions, belts/chains/gears, etc., and can solve problems that cannot be applied to large-displacement, high-power automobiles, discontinuous transmission ratios of hydraulic automatic transmissions, and automobiles. CVT has not been popularized to achieve the effects of low production cost and equipment investment, less auxiliary and servo systems, improved speed-up performance and stable performance

Inactive Publication Date: 2007-11-14
龙宏元
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Realizing continuously variable transmission is the goal that the automobile industry has been longing for. The current hydraulic automatic transmission and electronically controlled continuously variable transmission have made great progress to a certain extent, but they also have some shortcomings: 1. Hydraulic automatic transmission transmission The ratio is discontinuous, and it can only realize stepless speed change within the subsection range; the efficiency of hydraulic transmission is low, and the power performance and fuel economy are not ideal
2. Due to material reasons, electronically controlled continuously variable transmissions can only be used in some small-displacement vehicles at present, but cannot be applied in large-displacement and high-power vehicles.
3. They are complex in structure, high in production cost, and difficult to maintain
Because of the above reasons, the continuously variable transmission of automobiles has not been popularized.

Method used

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  • Planetary gear multi-way drive stepless speed variator
  • Planetary gear multi-way drive stepless speed variator
  • Planetary gear multi-way drive stepless speed variator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: In conjunction with Fig. 1, the optional planetary carrier [1] in the input stage planetary gear mechanism is used as the main input gear of the input stage planetary gear mechanism, and is connected with the torque power, and the sun gear [10] of the input stage planetary gear mechanism is used ] and the ring gear [8] are used as the two output gears of the input stage; in the output stage planetary gear mechanism, the planetary carrier [4] is selected as the main output gear of the output stage planetary gear mechanism to drive the rear stage transmission mechanism, and the output stage The sun gear [5] and the ring gear [7] of the planetary gear mechanism are used as two input gears of the output stage. Use the output sun gear [10] of the input stage planetary gear mechanism and the input ring gear [7] of the output stage planetary gear mechanism to form the transmission path [2] of the input stage sun gear output stage ring gear for torque transmission,...

Embodiment 2

[0037] Embodiment 2: In conjunction with Fig. 2, the ring gear [1] is selected as the main input gear of the input-stage planetary gear mechanism in the input-stage planetary gear mechanism, and is connected with the torque power, and the sun gear [10] of the input-stage planetary gear mechanism is used. ] and the planetary carrier [3] as the two output gears of the input stage; in the output stage planetary gear mechanism, the ring gear [5] is selected as the main output gear of the output stage planetary gear mechanism to drive the rear stage transmission mechanism, and the output stage The sun gear [7] and the planet carrier [6] of the planetary gear mechanism are used as two input gears of the output stage. Use the output sun gear [10] of the input-stage planetary gear mechanism and the input planetary carrier [6] of the output-stage planetary gear mechanism to form a high-speed and low-torque transmission path [9] for torque transmission; use the output planetary carrier o...

Embodiment 3

[0038] Embodiment 3: in conjunction with Fig. 3, it is on the basis of embodiment 2 (or embodiment 1), before the input stage of continuously variable transmission, one stage of planetary gear mechanism is added as drive stage. Use the ring gear [17] of the driving stage as the input wheel to connect with the input torque, use the planetary carrier [15] of the driving stage as the auxiliary wheel to drive the main input gear [1] of the CVT, and use the sun gear [14] of the driving stage ] as the drive wheel through the clutch [11] to link to each other with the main output gear [5]. Within a certain range, the rotation speed of the planetary carrier [15] is coordinated and synchronized with the rotation speed of the sun gear [14] after being changed by the continuously variable transmission to complete the synthesis of torque; when the resistance torque is small, the output gear [14] When the rotating speed is very high, the rotating speed of the planet carrier [15] is lower t...

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Abstract

The present invention discloses a stepless speed change device of epicyclic gear to achieve multi-channel drive, which is desinged by rotation and revolution of the epicyclic gear under different condition and control with different extent, and different distributive principle of torsion and rotate speed. It comprises two sets (or more than two)of rotating mechanism with epicyclic gear, one set is to be connection of input stage and input torsion, and the other as output stage driving back gera train .two rotating device of input stage and output stage connected through different gear ratio .which make up two drive path is low speed high torsion and hige speed low torsion, and epicyclic gear and assistant device are installed again in stepless speed change device or drive path to change gear ratio of the drive path. It is the gear teeth fixed stepless speed change device, have efficiency of the gear ratio and high-capacity driving.

Description

[0001] Field of technology: [0002] The invention relates to a continuously variable transmission, in particular to a principle of different distribution of torque and rotational speed by revolution and rotation of planetary gears to realize stepless change of torque and rotational speed transmission. technical background: [0003] Realizing continuously variable transmission is the goal that the automobile industry has been longing for. The current hydraulic automatic transmission and electronically controlled continuously variable transmission have made great progress to a certain extent, but they also have some shortcomings: 1. Hydraulic automatic transmission transmission The ratio is discontinuous, and it can only realize stepless speed change within the subsection range; the hydraulic transmission efficiency is low, and the power performance and fuel economy are not ideal. 2. Due to material reasons, the electronically controlled continuously variable transmission can o...

Claims

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Application Information

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IPC IPC(8): F16H3/44
Inventor 龙宏元
Owner 龙宏元
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