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2. 发明公开

EP1749996A1 Injection advance arrangement 有权转让
标题翻译：注射提前安排
公开(公告)号：EP1749996A1
公开(公告)日：2007-02-07
申请号：EP06253674.3
申请日：2006-07-13
申请人： Delphi Technologies, Inc.
发明人： Chapman, Leslie , Dyason, Rodney
IPC分类号： F02D1/18 , F02M41/14
CPC分类号： F02M41/128 , F02D1/183 , F02D2001/186 , F02M41/1416
摘要： An advance arrangement for controlling timing of fuel delivery by a fuel pump in an engine comprises an advance piston (14) which is movable in either an advance or a retard direction to advance or retard, respectively, the timing of pump fuel delivery, wherein a surface associated with the advance piston (14) is exposed to fuel pressure within a main advance control chamber (34). The advance piston (14) has a supply port (36a) to allow fuel to flow into the main advance control chamber (34) and a drain port (42a) to allow fuel to flow out of the main advance control chamber (34). A servo piston (24) is movable relative to the advance piston (14) to control opening and closing of the supply port (36a) and the drain port (42a). The advance arrangement is characterised by a restricted flow means (46) for restricting the flow of fuel out of the main advance control chamber (34) through the drain port (42a) when the advance piston (14) moves in the retard direction beyond a predetermined amount.
摘要翻译：一种用于控制发动机中的燃料泵的燃料输送正时的提前装置，包括：前进活塞（14），其能够分别在提前或延迟方向上移动以提前或延迟泵燃料输送的正时，其中a 与前进活塞（14）相关联的表面暴露于主前进控制室（34）内的燃料压力。提前活塞14具有供燃料流入主提前控制室34的供给口36a和用于使燃料从主提前控制室34流出的排出口42a。伺服活塞（24）可相对于前进活塞（14）移动，以控制供给口（36a）和排出口（42a）的打开和关闭。提前装置的特征在于限制流动装置（46），用于当推进活塞（14）在延迟方向上移动超过一个时，限制通过排放口（42a）的燃料从主进气控制室（34）流出预定量。

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