Invention Grant
- Patent Title: Dual fuel injector and fuel system
- Patent Title (中): 双燃油喷射器和燃油系统
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Application No.: US13905285Application Date: 2013-05-30
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Publication No.: US09376992B2Publication Date: 2016-06-28
- Inventor: Cory Andrew Brown , Dana R. Coldren
- Applicant: Caterpillar, Inc.
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Main IPC: F02M43/04
- IPC: F02M43/04 ; F02M21/02

Abstract:
A dual fuel injector in a dual common rail fuel system includes an injector body defining a liquid fuel supply passage to a liquid fuel nozzle outlet, and a gaseous fuel supply passage to a gaseous fuel nozzle outlet. A liquid fuel needle check is movable within the injector body and has an opening hydraulic surface exposed to a fuel pressure of a liquid fuel common rail. A gaseous fuel needle check is positioned side by side with the liquid fuel needle check and has an opening hydraulic surface exposed to the fuel pressure of the liquid fuel common rail. Sensitivity to differences in gaseous fuel rail pressure and liquid fuel rail pressure is reduced by the design.
Public/Granted literature
- US20130319373A1 Dual Fuel Injector And Fuel System Public/Granted day:2013-12-05
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