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Planetary automatic transmission

An automatic transmission, planetary technology, applied in the direction of vehicle gearboxes, transmission components, transmission devices, etc., can solve the problems of difficult assembly and processing, and achieve the effect of stable control

Inactive Publication Date: 2014-02-19
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The automatic transmission described in this patent is difficult to process and difficult to assemble due to the use of double planetary rows and eight shifting elements including one-way clutches

Method used

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  • Planetary automatic transmission
  • Planetary automatic transmission

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Embodiment Construction

[0023] Such as figure 1 The illustrated embodiment of a planetary automatic transmission includes an input end 10, a torque converter 20, a hydraulic speed reducer 30, a first planetary row 40, a second planetary row 50, a third planetary row 60, a Four planetary row 70, first clutch 81, first brake 82, second clutch 83, second brake 84, third brake 85, fourth brake 86, output end 90; wherein, torque converter 20 includes a torque converter pump Wheel 21, torque converter turbine 22, lock-up clutch 23, hydraulic speed reducer 30 includes hydraulic speed reducer rotor 31, hydraulic tachometer stator 32, first planetary row 40 includes first sun gear 41, first planetary gear 42 , the first ring gear 43, the first planet carrier 44, the second planetary row 50 includes the second sun gear 51, the second planetary gear 52, the second ring gear 53, the second planetary carrier 54, the third planetary row 60 includes the second Three sun gears 61, third planetary gears 62, third ri...

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Abstract

The invention relates to a transmission, in particular to a planetary automatic transmission. The planetary automatic transmission comprises the input end, a torque converter, a lockup clutch, a hydraulic retarder, four planetary rows, two clutches, four brakes and the output end, wherein the input end is connected with a torque converter pump impeller, a torque converter worm wheel and a rotor of the hydraulic retarder are connected with a first planetary frame, a first gear ring and a second solar gear are connected with a third solar gear, a second planetary frame and a third gear ring are connected with a fourth solar gear, a third planetary frame and a fourth planetary frame are connected with the output end, the two ends of the lockup clutch are connected with the torque converter worm wheel and the torque converter pump impeller respectively, the two ends of the first clutch are connected with the first planetary frame and a first solar gear respectively, the two ends of the second clutch are connected with the first gear ring and the second solar gear respectively, one ends of the brakes are fixed, and the other ends of the brakes are respectively connected with the first solar gear, the second gear ring, the third gear ring and the fourth gear ring. According to the planetary automatic transmission, six forward gears and two backward gears can be achieved, the structure is simple, and machining is conveniently carried out.

Description

technical field [0001] The invention relates to a transmission, in particular to a planetary automatic transmission. Background technique [0002] Planetary automatic transmissions are widely used in vehicles. This transmission is fixed or connected to different planetary gear elements through shifting elements to achieve different gears. The planetary automatic transmission has a compact structure, and the driving is easy and comfortable. [0003] The structure of the planetary row is complex, and the widespread use of the Ravina, Simpson and Lepelle gears has greatly promoted the development of planetary automatic transmissions. The Ravina gear train is a double-row structure, the front row and the rear row share a ring gear and a planet carrier; the outer planetary gear on the planet carrier is a long planetary gear, which meshes with the front sun gear and the inner planetary gear; the inner planetary gear It is a short planetary gear, which meshes with the rear sun ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H47/08
CPCF16H47/085F16H2200/0052F16H2200/0086
Inventor 杨珏杨耀东金纯张文明孙健宁
Owner UNIV OF SCI & TECH BEIJING
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