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Gearbox for a motor vehicle

A technology for gearboxes and motor vehicles, applied in the field of gearboxes, can solve problems such as intensification, large space, occupation, etc., and achieve the effect of compact design

Inactive Publication Date: 2009-11-04
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This problem is exacerbated by the fact that the gearbox requires a dual clutch on its input side to selectively drive the two input shafts, which occupies significantly less space than the simple clutch required to drive a single input shaft. more space

Method used

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  • Gearbox for a motor vehicle
  • Gearbox for a motor vehicle

Examples

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Embodiment Construction

[0044] figure 1 The gearbox shown has a housing whose front and rear walls 1, 2 are shown in the figure. The front wall 1 faces a not shown double clutch, by means of which a solid input shaft 3 or a hollow input shaft 4 extending coaxially along the solid input shaft 3 is selectively driven. The secondary shafts 5 , 6 , 7 are rotatably supported in the walls 1 , 2 . Each layshaft extends partly from the gearbox, over the front wall 1, and carries a pinion 8, 9, 10 respectively. All three pinions 8, 9, 10 mesh with the same output differential not shown.

[0045] On the inside of the gearbox housing, immediately adjacent to the plane I of the front wall 1 , a gear wheel 11 is mounted in a torque-proof manner on the input shaft 4 . Gear 11 drives in rotation a gear 12 mounted on layshaft 6 . Gear 11 is the smallest of all the gears in the gearbox, while gear 12 is the largest.

[0046] On the second plane II of the gearbox, next to the plane I of the gears 11, 12, there is...

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PUM

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Abstract

A gearbox for a motor vehicle comprises coaxial first and second input shafts (3, 4) carrying a plurality of gearwheels (11, 13, 20, 23, 29; 103, 112, 115, 117, 121), and first to third layshafts (5, 6, 7) selectively drivable by said input shafts (3, 4). Each gearwheel (11, 13, 20, 23, 29) of said input shafts (3, 4) meshes with at least one gearwheel (12, 14, 21, 22, 24, 25, 28) of said first or second layshafts (6, 7). The three layshafts (5, 6, 7) carry first to third pinions (8, 9, 10) meshing with a same output gearwheel, and the third layshaft (5) further carries a reverse gearwheel (16) meshing with a gearwheel (15) of said first layshaft (6).

Description

technical field [0001] The present invention relates to a gearbox for a motor vehicle comprising coaxial first and second input shafts, said input shafts carrying a plurality of gears; and first to third layshafts, said layshafts being The gear of the input shaft is selectively driven. Background technique [0002] Transmissions with coaxial input shafts are the target of intensive research in recent years because they are expected to be combined with dual clutches driving both input shafts, which can combine the advantages of traditional automatic transmissions, such as easy operation and continuous shifting, with traditional The advantages of a manual transmission, such as quick shifts and high efficiency. [0003] A gearbox with coaxial input shafts is known, for example, from DE 199 23 185 A1. [0004] In prior art gearboxes, first and second countershafts carry first and second pinions, which mesh with the output differential. The reverse gear on the first layshaft o...

Claims

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Application Information

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IPC IPC(8): F16H3/093F16H3/12
CPCF16H2003/0931F16H3/006F16H2200/0056F16H2003/0933Y10T74/19228Y10T74/19126Y10T74/19233
Inventor 马赛厄斯·雷姆勒马库斯·罗肯巴赫阿克塞尔·盖伯格米凯尔·莫林
Owner GM GLOBAL TECH OPERATIONS LLC
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