Patent ID: 6719080
Filing Date: 2004-04-13
Classification: B60K,B60W,F16H,Y02T,Y10T

Abstract:
An automotive powertrain comprising:a pair of drive wheels; at least one accumulator for receiving hydraulic fluid and storing pressure and for discharging the stored pressure; a first hydraulic pump/motor for driving said drive wheels in a motor mode responsive to receipt of hydraulic fluid and for pumping hydraulic fluid to said accumulator responsive to braking; an internal combustion engine having an engine crankshaft extending from said engine to a distal end; a second hydraulic pump/motor utilizing said engine crankshaft as its input/output shaft and, when operating in a pump mode, pumping hydraulic fluid to at least one of said accumulator and said first hydraulic pump/motor wherein said second hydraulic pump/motor is a bent-axis piston pump including a drive plate fixed to said distal end of said engine crankshaft and pistons for rotatably driving said drive plate; and a common set of bearings used both as back bearings for said crankshaft and as drive bearings for said second hydraulic pump/motor.