Abstract:
본 발명은 클러치(11)를 작동시키는 부스터 실린더(7)에 연결되어 클러치를 제어하는 클러치 제어 장치이고, 메인 실린더 모듈(110); 상기 메인 실린더 모듈(110) 내에 이동 가능하게 내장되는 피스톤 구조체(120); 상기 메인 실린더 모듈(110)의 전방에 배치되며, 상기 피스톤 구조체(120)와 연동되는 보조 실린더 모듈(130); 상기 메인 실린더 모듈(110)의 후방에 연결되는 위치 감지 모듈(140); 상기 메인 실린더 모듈(110)의 측방에 연결되는 솔레노이드 밸브 모듈(150); 및 상기 위치 감지 모듈(140)에 의해 측정된 상기 피스톤 구조체(120)의 위치에 따라 상기 솔레노이드 밸브 모듈(150)의 압력을 제어하는 제어부;를 포함하며, 상기 위치 감지 모듈(140)은 비접촉 변위 센서 방식이다.
Abstract:
A hydraulic transmission comprising a variable displacement pump and motor, at least one of which has cylinders having valves which are controllable on each cycle of cylinder working volume to determine the net displacement of working fluid by the cylinder. The transmission has a valve control module which determines a displacement of the pump and the motor by specifying a displacement demand. The pump and/or motor valve control module determine the frequency of intensity peaks in the frequency spectrum of the pattern of cylinders carrying out active and inactive cycles of cylinder working volume using a first procedure and, if these will fall within disallowed frequency bands including the resonant frequency of components with which the transmission is in mechanical communication, the displacement demand, or another input, is periodically modified to supress generation of those frequencies. The hydraulic transmission is useful for example in a wind turbine generator, or a vehicle.
Abstract:
Es wird eine Getriebevorrichtung (1) mit sekundär gekoppelter Leistungsverzweigung beschrieben. Ein Teil eines anliegenden Drehmomentes ist in einem ersten Leistungszweig (3) wenigstens über eine Hydrostateinrichtung (4) und der andere Teil des Drehmomentes ist in einem zweiten Leistungszweig (5) über eine mechanische Einrichtung (6) zwischen einem Getriebeeingang (7) und einem Getriebeausgang (8) führbar. Die Hydrostateinrichtung (4) des ersten Leistungszweiges (3) umfasst wenigstens eine Pumpe (12) und wenigstens einen über einen hydraulischen Kreislauf damit wirkverbundenen Motor (13), die beide verstellbar sind. Die beiden Leistungszweige (3, 5) sind über ein Summierungsgetriebe (9) summierbar. Erfindungsgemäß ist die Pumpe (12) kleiner als der Motor (13) dimensioniert.
Abstract:
A powertrain (100) includes an engine (101), a transmission (107) having a first input connected to an engine output shaft (234), and a variator (105). The variator (105) includes a pump (204) connected to the engine output shaft (234) and a motor (206) connected to a second input of the transmission (107). The pump (204) has a variable setting that is determinable by a position of a pump actuator (202) in response to a command signal (246). A controller (113) associated is disposed to control operation of the variator (105), at least in part, by providing the command signal (246) to the pump actuator (202). The command signal (246) is determined based on an operator command (258) and on a compensation term, which depends on a correlation function (324) of a parameter related to the speed ratio (304) between a pump speed and a motor speed and a flow characteristic of the pump actuator (202).
Abstract:
An energy extraction device and method for extracting energy from a fluctuating energy flow from a renewable energy source. A hydraulic pump is driven by a rotating shaft, driven in turn by a renewable energy source. A hydraulic motor drives a load and a high pressure manifold communicates between the pump, motor and an elastically deformable fluid retaining body. The hydraulic pump and hydraulic motor comprise working chambers displacing a volume of working fluid selectable on each cycle of working chamber volume by the control of electronic valves. The pressure in the high pressure manifold is measured and the net rate of displacement of working fluid by the hydraulic pump is selected responsive thereto to regulate the torque applied to the said rotating shaft. The net rate of displacement of working fluid by the hydraulic motor is selected to smooth the energy flow to the load. The net rate of displacement of working fluid by the hydraulic motor is selected to regulate the pressure in the high pressure manifold to remain within an acceptable pressure range. Instead of tightly controlling the pressure in the high pressure manifold, it is allowed to vary and, by allowing the pressure to vary, a smooth output can be produced with high efficiency despite fluctuations in the energy flow from the renewable energy source. The pressure is more strongly controlled at the top and/or bottom of the acceptable pressure range than closer to an optimum working pressure.