Continuously variable transmission and method for transferring torque
A technology of continuously variable transmissions and transmissions, applied in the direction of transmissions, gear transmissions, belts/chains/gears, etc., can solve the problems of reduced belt contact, long operation, and bulky structure, and reduce deflection and/or Misalignment , Reduce operating costs, reduce the effect of transmission noise
Active Publication Date: 2019-03-15
NANJING BANGQI AUTOMATIC TRANSMISSION CO LTD
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- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This is disadvantageous because the transmission typically runs more often and / or for longer in forward drive than in reverse drive
This may shorten the life of the countershaft and / or may affect the design parameters of the countershaft, e.g. regarding thickness, material, etc.
Disadvantages of prior art transmissions may be, for example, high cost and / or heavy construction, which may result in reduced vehicle efficiency and / or increased maintenance of the transmission
Also, relatively high bending moments can result in relatively high shaft deflections
This can result in reduced belt contact between the strip and the pulleys and / or reduced bearing life and / or increased gear noise and / or reduced gear life and / or increased fuel consumption
On the other hand, a sufficiently rigid shaft against relatively high bending moments may lead to a more bulky structure, which may be disadvantageous in terms of cost and fuel consumption
Method used
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[0033] It should be noted that the drawings are only schematic representations of embodiments of the invention given by way of non-limiting example. In the drawings, the same or corresponding parts are assigned the same reference numerals.
[0034] exist Figure 1a A schematic sectional view of the continuously variable transmission 1 according to the first embodiment of the present invention in forward drive operation is shown in . The continuously variable transmission 1 includes: a main shaft 2 including a primary pulley 3 ; and a counter shaft 4 including a counter pulley 5 . The primary pulley 3 and the secondary pulley 5 each comprise two sheaves 14 , 16 . At least one sheave of the secondary pulley 3 and at least one sheave of the secondary pulley 5 are opposite to the other sheave on the primary pulley 3 and on the secondary pulley 5 in the axial direction of the corresponding main or secondary shaft, respectively. Movable, wherein actuation of the sheave may be acco...
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Disclosed is a method to transfer a torque from an engine via a continuously variable transmission to wheels of a vehicle, wherein a primary shaft with a primary pulley transfers engine torque via a flexible member to a secondary shaft with a secondary pulley thereon, wherein a force exerting element in forward drive exerts an axial force on the secondary shaft directed away from the secondary pulley such that a bending moment on the secondary shaft is reduced.
Description
technical field [0001] The present invention relates to a continuously variable transmission for transmitting torque from an engine to vehicle wheels and a method thereof. Background technique [0002] Continuously variable transmissions for vehicles are well known. [0003] Such a continuously variable transmission generally includes: a main shaft having a primary pulley; and a secondary shaft having a secondary pulley, wherein the primary shaft and the secondary shaft are connected to each other through a flexible member between the primary pulley and the secondary pulley. [0004] Thus, the continuously variable transmission exhibits a torque path from the primary pulley and primary pulley to the secondary pulley and layshaft via the flexible member in drive mode. [0005] Known continuously variable transmissions are adapted to continuously vary the speed ratio of the pulleys in order to achieve optimum torque output at the vehicle wheels by varying the effective diamet...
Claims
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IPC IPC(8): F16H37/02F16H1/18
CPCF16H1/18F16H37/021
Inventor R·博热R·韦尔波特恩K·H·R·布鲁克斯泰格P·J·C·沃特斯H·S·罗洛夫森B·K·J-M·东代尔S·L·W·勒泰尔姆
Owner NANJING BANGQI AUTOMATIC TRANSMISSION CO LTD