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Continuously variable transmission and vehicle

A continuously variable transmission and speed ratio technology, applied in the field of vehicles, can solve the problems affecting starting power, low transmission efficiency, pulley slipping, etc., and achieve the effect of avoiding pulley slipping, ensuring starting power and sufficient performance

Active Publication Date: 2021-11-16
DONGFENG MOTOR GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a continuously variable transmission and a vehicle, which solves or partially solves the problem that in the prior art, the starting speed ratio of the CVT cannot be too large, and when the starting transmission torque is large, the pulley will slip, which affects the starting power. Frictional torque transmission with the tapered surface of the pulley, the transmission efficiency is low, especially the technical problem of low efficiency when the car is running at high speed

Method used

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Embodiment Construction

[0019] see figure 1 A continuously variable transmission provided by an embodiment of the present invention includes: a housing, a first input shaft 1, a second input shaft 2, an output shaft 3, a planetary mechanism 4, a starting gear driving gear 5, a starting gear driven gear 6, High gear driving gear 7, high gear driven gear 8 and CVT transmission system 9.

[0020] First input shaft 1, second input shaft 2, output shaft 3, planetary mechanism 4, starting gear driving gear 5, starting gear driven gear 6, high speed driving gear 7, high speed driven gear 8 and CVT transmission system 9 are all set in the housing.

[0021] The input end of the planetary mechanism 4 is connected with the first input shaft 1 .

[0022] The output end of the planetary mechanism 4 can be selectively connected with the starting gear driving gear 5 or the high gear driving gear 7 .

[0023] The starting gear driven gear 6 and the high speed gear driven gear 8 are all arranged on the output shaf...

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Abstract

The invention discloses a continuously variable transmission and a vehicle, and belongs to the technical field of vehicles. According to the continuously variable transmission, the input end of a planetary mechanism is connected with a first input shaft; the output end of the planetary mechanism is selectively connected with a starting-gear driving gear or a high-gear driving gear; a starting-gear driven gear and a high-gear driven gear are both arranged on an output shaft; the starting-gear driving gear is meshed with the starting-gear driven gear, and the high-gear driving gear is meshed with the high-gear driven gear; a second input shaft is arranged in the first input shaft, the second input shaft and the first input shaft are coaxial, and the second input shaft is connected with a CVT system; and the CVT system is connected with the output shaft. The continuously variable transmission and the vehicle are sufficient in starting acceleration performance and high in transmission efficiency in the high-speed driving stage.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a continuously variable transmission and a vehicle. Background technique [0002] CVT (Continuously Variable Transmission, continuously variable automatic transmission) is a kind of transmission. In the CVT transmission system, the traditional gears are replaced by a pair of pulleys and a steel belt. Each pulley is a V-shaped structure composed of two conical discs. One pulley is connected to the engine crankshaft as a driving pulley, and the other The pulleys connect to the differential shaft to drive the wheels. The conical disc with pulley can be tightened or expanded under the action of hydraulic pressure, and the steel chain can be squeezed to adjust the width of the V-groove. When the conical disc moves to the inner side to tighten, the steel sheet chain moves in a direction other than the center of the circle (centrifugal direction) under the extrusion of the conical di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H37/02F16H37/08
CPCF16H37/022F16H37/0806F16H37/0846
Inventor 王德伟周立孟斌严军闵立
Owner DONGFENG MOTOR GRP
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