发明授权
US07984701B2 Device for controlling the movement of a valve, in particular of an intake valve, of an internal combustion engine 失效
用于控制内燃机的阀门,特别是进气门的运动的装置

  • 专利标题: Device for controlling the movement of a valve, in particular of an intake valve, of an internal combustion engine
  • 专利标题(中): 用于控制内燃机的阀门,特别是进气门的运动的装置
  • 申请号: US12279810
    申请日: 2007-02-22
  • 公开(公告)号: US07984701B2
    公开(公告)日: 2011-07-26
  • 发明人: Stefano Re FiorentinMario Palazzetti
  • 申请人: Stefano Re FiorentinMario Palazzetti
  • 申请人地址: IT Turin
  • 专利权人: Fiat Auto SpA
  • 当前专利权人: Fiat Auto SpA
  • 当前专利权人地址: IT Turin
  • 代理机构: Sughrue Mion, PLLC
  • 优先权: ITTO2006A0131 20060224
  • 国际申请: PCT/IB2007/050566 WO 20070222
  • 国际公布: WO2007/096826 WO 20070830
  • 主分类号: F01L9/04
  • IPC分类号: F01L9/04
Device for controlling the movement of a valve, in particular of an intake valve, of an internal combustion engine
摘要:
The device is adapted to control the movement of a valve (1) of an internal combustion engine comprising a stem (1a) which may move in translation through an opening (2a) of a hollow guide body (2) and which ends in a mushroom head (1b) cooperating in operation with a valve seat (12) provided in a wall (13) of the engine head. The valve (1) may move in translation with respect to the hollow guide body (2) between a retracted position and a forward position in which the mushroom head (1b) respectively closes and opens the associated valve seat (12).The control device comprises an electromagnet (3) adapted, when energised, to retain the valve (1) in the retracted closed position, a first spring (7) associated with the valve (1) and tending to urge it towards the open position, and a second spring (8) also associated with the valve (1) and tending to oppose its transition into the open position. The arrangement is such that when the electromagnet (3) is de-energised, the valve (1) moves in acceleration towards the open position under the action of the first spring (7) until the action of the latter stops, and then the valve (1) moves in deceleration into the open position under the action of the second spring (8).
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