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
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