公开(公告)号：US20150219054A1

公开(公告)日：2015-08-06

申请号：US14170129

申请日：2014-01-31

Applicant: Cummins Inc.

Inventor： Paul Peavler ,  Donald J. Benson ,  Paul Douglas Free ,  Jeffrey C. Huang ,  Eric Benham ,  C. Edward Morris, JR.

IPC: F02M69/04

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

Abstract: A fuel injector has a plurality of injection fuel delivery passages, which transport fuel from a proximate end to an injector cavity near the distal end of the fuel injector, wherein less than a total number of injection fuel delivery passages include an orifice. 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-Injection (SOI) and opening rate both improve significantly and advantageously. For compactness, the orifices may be positioned in a cover plate 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: 燃料喷射器具有多个喷射燃料输送通道，其将燃料从燃料喷射器的远端附近的近端运送到喷射器腔，其中小于喷射燃料输送通道的总数包括孔口。 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显着和有利地改善。 为了紧凑性，孔可以定位在用于保持喷射控制阀组件的部件的盖板中，并且当沿着纵向轴线观察时可以进一步布置在弧形段中。

公开(公告)号：US09644590B2

公开(公告)日：2017-05-09

申请号：US14170129

申请日：2014-01-31

Applicant: Cummins Inc.

Inventor： Paul Peavler ,  Donald J. Benson ,  Paul Douglas Free ,  Jeffrey C. Huang ,  Eric Benham ,  C. Edward Morris, Jr.

IPC: F02M55/00 ,  F02M69/04 ,  F02M47/02

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

Abstract: A fuel injector has a plurality of injection fuel delivery passages, which transport fuel from a proximate end to an injector cavity near the distal end of the fuel injector, wherein less than a total number of injection fuel delivery passages include an orifice. 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-Injection (SOI) and opening rate both improve significantly and advantageously. For compactness, the orifices may be positioned in a cover plate 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.