Driving system for use in motor vehicle

摘要

A driving system acting in conjunction with a motor vehicle having a torque convertor coaxially coupled to the output shaft of the engine, and transfer means having a driving gear coaxially coupled to the output shaft of the overdrive means and a driven gear coupled to its driving gear. Overdrive means having a planetary gear mechanism are coaxially coupled to the output shaft of the torque convertor, and include an output shaft coupled to the driving gear of the transfer means. An automatic transmission is coaxially coupled to the driven gear of the transfer means and includes a planetary mechanism and friction engaging means to provide the desired mode of operation. A differential gear having a driving gear coupled to the output shaft of the automatic transmission drives the motor vehicle. The automatic transmission is positioned below the overdrive means. The torque convertor is positioned in side-by-side relation with the overdrive means, and the differential gear is positioned in side-by-side relation with the automatic transmission an below the torque convertor and the overdrive means. This overdrive means is removably coaxially coupled to the output shaft of the torque convertor, allowing an optional installation thereof.