Patent ID: 6852055
Filing Date: 2005-02-08
Classification: B60K,B60W,F16H,Y02T,Y10S

Abstract:
1. A continuously variable power split transmission system for use with a first motor power supply and a second motor power supply, the system comprising: a planetary gear set comprising a sun gear, a ring gear, a plurality of planet gears and a planet carrier; a SUN shaft linked to said sun gear and operatively connected to said first motor power supply; an output shaft operatively connected to said planet carrier; a speed variator; a countershaft operatively connected to said ring gear through a first clutch, said counter-shaft and said ring gear rotating in the same direction when connected, said countershaft being also operatively connected to said second motor power supply and said countershaft being also operatively connected to said sun shaft through the speed variator so that said countershaft and said sun shaft rotate in the same direction; whereby power input applied by said first motor power supply to said sun shaft is split into two streams merging on said output shaft through said planet carrier, one stream passing through said speed variator, countershaft and ring gear, the other stream passing directly through said sun gear, and power input applied by said second motor power supply to said countershaft adds power to said output shaft while reducing the power flow required to pass through said speed variator.