公开(公告)号：WO2015116777A1

公开(公告)日：2015-08-06

申请号：PCT/US2015/013446

申请日：2015-01-29

Applicant: CUMMINS INC.

Inventor： PEAVLER, Paul ,  BENSON, Donald J. ,  FREE, Paul Douglas ,  HUANG, Jeffrey C. ,  BENHAM, Eric ,  MORRIS, C. Edward

IPC: F02M47/02 ,  F02M55/00 ,  F02M55/04

CPC classification number: F02M69/04 ,  F02M47/027 ,  F02M55/008 ,  F02M2200/28 ,  F02M2200/315

Abstract: A fuel injector (18) has a plurality of injection fuel delivery passages (86), which transport fuel from a proximate end to an injector cavity (52) near the distal end of the fuel injector, wherein less than a total number of injection fuel delivery passages (86) include an orifice (200). This configuration provides a reduction in fueling variation from pulse to pulse (multi-pulse) with respect to pulse separation due to pressure variation while allowing a sufficient amount of fuel flow to the injector cavity. Thus, the consistency of Start-Of-lnjection (SOI) and opening rate both improve significantly and advantageously. For compactness, the orifices may be positioned in a cover plate (132) used to retain the components of the injection control valve assembly and may further be arranged in an arc segment when viewed along a longitudinal axis.

Abstract translation: 燃料喷射器（18）具有多个喷射燃料输送通道（86），其将燃料从近端延伸到靠近燃料喷射器远端的喷射器腔（52），其中少于喷射燃料的总数 输送通道（86）包括孔口（200）。 该配置提供了由于压力变化而相对于脉冲分离而从脉冲到脉冲（多脉冲）的加油变化减少，同时允许足够量的燃料流入喷射器腔。 因此，起始注入（SOI）和开放率的一致性都有显着和有利的改善。 对于紧凑性，孔可以定位在用于保持喷射控制阀组件的部件的盖板（132）中，并且当沿着纵向轴线观察时可进一步布置在弧形段中。