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Automatic transmission system and corresponding control method

A technology of automatic transmission and torque transmission, which is applied in the direction of transmission components, transmission devices, gear transmission devices, etc., and can solve problems such as non-optimization

Active Publication Date: 2018-02-23
PUNCH POWERGLIDE STRASBOURG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, this known transmission system is not optimized in terms of the number of parts being driven to achieve a speed ratio (reduced power loss, improved performance) or to achieve a small volume and simpler structure configuration.

Method used

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  • Automatic transmission system and corresponding control method
  • Automatic transmission system and corresponding control method
  • Automatic transmission system and corresponding control method

Examples

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Embodiment Construction

[0024] figure 1 , 2 , 6 are shown in different shapes in partial section along a plane passing through the longitudinal axis, representing an automatic transmission system according to the invention. These partial illustrations allow those skilled in the art to easily deduce the complete structure of the transmission system through symmetry.

[0025] As shown in the accompanying drawings, the traditional system of the present invention includes:

[0026] - input shaft AE;

[0027] - output shaft AS;

[0028] - fixed parts ES, such as housings;

[0029] - Ravigneaux first gear set T1 forming an input gear set comprising at least a first and a second sun gear T1S1, T1S2, a first and a second crown T1C1, T1C2, a set of planetary gears as functional constituent parts T1PS, a set of long gear T1PL and planet carrier T1SC;

[0030] - Ravigneaux second gear set T2 forming an output gear set comprising at least a first and a second sun gear T2S3, T2S4 as functional components, a...

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PUM

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Abstract

The present invention relates to an automatic transmission comprising: - an input shaft (AE), - an output shaft (AS), - a stationary element (ES), such as a casing for example, - a first Ravigneaux gearset (T1) forming an input gearset, - a second Ravigneaux gearset (T2) forming an output gearset, - first, second, third, fourth, fifth, sixth and seventh torque-transmitting members (C1, C2, C3, C4, C5, C6, C7) that can be engaged or activated selectively in order to establish ten forward gear ratios and one reverse gear ratio, which automatic transmission is characterized in that the seven selective torque-transmitting members (C1, C2, C3, C4, C5, C6, C7) are positioned and arranged in order selectively, for each gear ratio, to connect two movement-input constituent functional elements (T2C3, T2C4, T2S3, T2S4) of the second output gearset (T2) each to one out of the input shaft (AE), the stationary element (ES) and the input gearset (T1).

Description

technical field [0001] The present invention relates to an automatic transmission with ten forward speeds for a motor vehicle or the like. Background technique [0002] In the field of automatic transmissions there is always a need to provide a greater number of forward speed ratios. [0003] This demand arises from a double trend, on the part of the driver and on the part of the motor vehicle manufacturer, the wish to have a large number of super low (sous-multiplies) speeds for driving comfort and optimal adaptation of the motor state to different low speeds, and on the other hand It is desirable to have a large number of overspeeds (surmultipliees), at least three or four, to reduce consumption at high speeds (keep the engine low), while being able to absorb changing undulation patterns and maintain the possibility of acceleration in these conditions. [0004] Automatic transmissions with ten forward speeds and one reverse speed are already known from documents US2009 / 01...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/66
CPCF16H3/663F16H2200/0069F16H2200/2007F16H2200/2023F16H2200/2025F16H2200/2048F16H2200/2097
Inventor M·里恩F·埃特
Owner PUNCH POWERGLIDE STRASBOURG