Patent
Variable displacement pump
Yasushi Watanabe,Hideaki Ohnishi,Naganuma Atsushi +2 more
- 11 Apr 2012
163
TL;DR: In this paper, a variable displacement oil pump for an automotive engine includes a cam ring accommodating thereinside a pump element having a rotor, swingingly movable in a housing and biased in a direction to increase an eccentricity amount of the cam ring relative to the axis of the rotor by a biasing member.
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Abstract: A variable displacement oil pump for an automotive engine. The oil pump includes a cam ring accommodating thereinside a pump element having a rotor. The cam ring is swingingly movably accommodated in a housing and biased in a direction to increase an eccentricity amount of the cam ring relative to the axis of the rotor by a biasing member. First and second pressure chambers are defined inside the housing by the outer peripheral section of the cam ring. The first pressure chamber is supplied with a discharge pressure to be applied to the cam ring to oppose to a biasing force of the biasing member. The second pressure chamber is supplied with the discharge pressure to be applied to the cam ring to assist the biasing force of the biasing member. Additionally, a control device is provided for controlling supply of the discharge pressure to the second pressure chamber.
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Citations
Patent
Variable displacement vane pump
Shigeaki Yamamuro,Hideo Konishi,Fusao Semba +2 more
- 25 Sep 2007
TL;DR: A variable displacement vane pump with a variable displacement cam ring swingable around a swing fulcrum can be found in this article, where the pump body, a driving shaft, a rotor, a cam ring, and a plunger biasing the cam ring from a side of the second fluid pressure chamber toward a side on the outer circumferential side.
93
Patent
Variable displacement oil pump
Yasushi Watanabe,Hideaki Ohnishi,Koji Saga +2 more
- 06 Nov 2013
TL;DR: In this article, a variable displacement oil pump includes a switching mechanism arranged to switch a state in which the hydraulic fluid is introduced to the second control hydraulic chamber through a connection passage, and a switch mechanism arranged for the fluid to be discharged from the second controller hydraulic chamber via the connection passage.
59
Patent
Control system and method for pump output pressure control
David R. Shulver,Matthew Williamson,Adrian Constantin Cioc +2 more
- 26 Sep 2007
TL;DR: In this paper, a control feature is connected to the output of the pump by a regulating valve, which selectively connects the pressurized working fluid to the control feature to reduce the pressure of the working fluid pressurized by the pump.
46
Patent
Variable displacement pump
Takeshi Ueki,Shingo Ishige,Yoshinobu Yamada +2 more
- 13 Dec 2006
TL;DR: In a variable displacement pump, a first groove always connected to a second hydraulic chamber is provided in a slide surface of a cam ring facing to an end surface of the side plate as discussed by the authors.
42
Patent
Variable displacement lubricant pump
Matteo Gasperini,Stefano Fiorini,Massimiliano Lazzerini,Raffaele Squarcini +3 more
- 28 May 2010
TL;DR: In this paper, a variable displacement lubricant pump (10) for providing pressurized lubricant for an interna! combustion engine is described, where the pump is equipped with a preensioning element that pushes the control ring (14) to a high pumping volume direction.
29
References
Patent
Variable displacement pump
Hideo Konishi,Kazuyoshi Uchino,Haruo Okamoto +2 more
- 27 Sep 2002
TL;DR: In this paper, a variable displacement pump has a cam ring, a rotor, a plurality of vanes, a pressure plate and a rear body, and a circular groove communicating to a back pressure inlet bore is formed in a suction area on a face of the rear body on a side of the rotor.
126
Patent
Variable displacement vane pump
Shigeaki Yamamuro,Hideo Konishi,Fusao Semba +2 more
- 25 Sep 2007
TL;DR: A variable displacement vane pump with a variable displacement cam ring swingable around a swing fulcrum can be found in this article, where the pump body, a driving shaft, a rotor, a cam ring, and a plunger biasing the cam ring from a side of the second fluid pressure chamber toward a side on the outer circumferential side.
93
Patent
Pump control method and poppet valve therefor
Stephen H. Salter,William Hugh Salvin Rampen +1 more
- 28 Sep 1989
TL;DR: In this article, an electrically actuable poppet valve using an annular permanent magnet to latch to a solenoid is described, and real-time control of a multi-piston fluid pump is achieved by real time control of electrically selectable inlet Poppet valves in one or more cylinders.
91
Patent
Variable displacement vane pump with variable target regulator
Douglas G. Hunter,Albin J. Niemiec +1 more
- 06 Oct 2004
TL;DR: In this paper, a variable displacement vane-type fluid pump is provided which permits improved regulation of the pump discharge such that the pump can meet the various requirements of lubrication for internal combustion engines at all speeds with minimized use of power.
67
Patent
Variable displacement oil pump
Yasushi Watanabe,Hideaki Ohnishi,Koji Saga +2 more
- 06 Nov 2013
TL;DR: In this article, a variable displacement oil pump includes a switching mechanism arranged to switch a state in which the hydraulic fluid is introduced to the second control hydraulic chamber through a connection passage, and a switch mechanism arranged for the fluid to be discharged from the second controller hydraulic chamber via the connection passage.
59
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