HYDRAULIC POWER TRAIN FOR HYBRID VEHICLE

摘要

A hydraulic power train for a hybrid vehicle is provided, which can selectively transmit power of a hydraulic driving unit or an engine to driving wheels using a double pinion planetary gear and a synchro sleeve in addition to the hydraulic driving unit. More specifically, a hydraulic power train for a hybrid vehicle is provided, which can achieve various driving modes and maximize the fuel efficiency, by combining a hydraulic driving unit, a double pinion planetary gear, and a synchro-type transmission to implement a continuously variable transmission for a hybrid vehicle that can selectively transmit power of an engine or a hydraulic driving unit.

主权项

1. A hydraulic power train for a hybrid vehicle, comprising:
a double pinion planetary gear set; an engine power-transmittably connected to one of operation components of the double pinion planetary gear set; a first hydraulic driving unit power-transmittably connected to another of the operation components of the double pinion planetary gear set; a second hydraulic driving unit power-transmittably connected to a remaining other of the operation components of the double pinion planetary gear set; a hydraulic supply unit hydraulic-suppliably connected to the first hydraulic driving unit and the second hydraulic driving unit; an output gear set connected to output shafts of the operation components of the double pinion planetary gear set connected to the engine and the first hydraulic driving unit to deliver power to a drive wheel; and a power intermittence unit mounted on the output shaft of the operation component of the double pinion planetary gear set connected to the engine to control engine power.