发明名称 |
Adaptable layshaft type gearbox using a planetary gearset, in particular for automobile vehicles |
摘要 |
A gearbox comprises parallel primary or input and secondary or output shafts in a casing. An output gear train of two constant-mesh gearwheels is fastened to the secondary shaft. An independent input gear train of four constant-mesh gearwheels and a first and a second clutch are mounted on the primary shaft. A third clutch is mounted on the secondary shaft. The first and third clutches respectively couple the input train to the primary shaft and to the secondary shaft. A three-element planetary gearset concentric with the primary shaft comprises a sun gear fastened to the input train, a planet carrier coupled to the primary shaft by the second clutch and a ring gear fastened to the output train. Thus the gearbox features three gear ratios by respective combinations of pairs of the three clutches. This arrangement constitutes a basic gearbox. More complex gearboxes derived from the basic gearbox comprise a supplementary gear train and a fourth clutch and/or a first brake and/or a second brake for respectively driving and/or immobilizing the sun gear and/or the planet carrier. This provides numerous additional forward and reverse gear ratios that are always well distributed and easy to control. |
申请公布号 |
US4788887(A) |
申请公布日期 |
1988.12.06 |
申请号 |
US19860928099 |
申请日期 |
1986.11.07 |
申请人 |
VALEO |
发明人 |
LEPELLETIER, PIERRE A. G. |
分类号 |
F16H3/08;F16H37/04;(IPC1-7):F16H37/06 |
主分类号 |
F16H3/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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