Patent ID: 6656083
Filing Date: 2003-12-02
Classification: B60K,B60L,B60W,F16H,Y02T,Y10S,Y10T

Abstract:
A hybrid drive system for a hybrid powered vehicle equipped with an oil-operated transmission, said hybrid drive system comprising:an internal combustion engine operationally connected to said oil-operated transmission through a first clutch; a battery-operated traction motor operationally connected to the oil-operated transmission; a battery-operated auxiliary motor operationally connected to said engine through a second clutch so as to start the engine; an oil pump operative to force an operating oil to at least the oil-operated transmission, said oil pump being operationally connected to said battery-operated auxiliary motor before said second clutch so as to be able to be driven by said battery-operated auxiliary motor; and alteration means for operationally connecting said oil pump to said battery-operated traction motor when a speed of rotation input from said battery-operated traction motor is higher than a speed of rotation input from said battery-operated auxiliary motor and to said battery-operated auxiliary motor when said speed of rotation from said battery-operated traction motor is lower than said speed of rotation from said battery-operated auxiliary motor, said alteration means comprising a first one-way clutch disposed between said battery-operated traction motor and said oil pump so as to connect said oil pump to said battery-operated traction motor during normal rotation of said battery-operated traction motor only and a second one-way clutch disposed between said battery operated auxiliary motor and said oil pump so as to connect said oil pump to said battery-operated auxiliary motor during normal rotation of said battery-operated auxiliary motor only.