Invention Grant
- Patent Title: Fuel injection pressure pulsation dampening system
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Application No.: US14170129Application Date: 2014-01-31
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Publication No.: US09644590B2Publication Date: 2017-05-09
- Inventor: Paul Peavler , Donald J. Benson , Paul Douglas Free , Jeffrey C. Huang , Eric Benham , C. Edward Morris, Jr.
- Applicant: Cummins Inc.
- Applicant Address: US IN Columbus
- Assignee: CUMMINS INC.
- Current Assignee: CUMMINS INC.
- Current Assignee Address: US IN Columbus
- Agency: Faegre Baker Daniels LLP
- Main IPC: F02M55/00
- IPC: F02M55/00 ; F02M69/04 ; F02M47/02

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.
Public/Granted literature
- US20150219054A1 FUEL INJECTION PRESSURE PULSATION DAMPENING SYSTEM Public/Granted day:2015-08-06
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