Invention Grant
- Patent Title: Methods and systems for mitigating fuel injector leak
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Application No.: US15608688Application Date: 2017-05-30
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Publication No.: US10145326B2Publication Date: 2018-12-04
- Inventor: Douglas James McEwan , Chris Paul Glugla
- Applicant: Ford Global Technologies, LLC
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technolgies, LLC
- Current Assignee: Ford Global Technolgies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: McCoy Russell LLP
- Agent Julia Voutyras
- Main IPC: F02D41/22
- IPC: F02D41/22 ; B60W10/06 ; B60W10/11 ; F02D41/00 ; F02D41/38 ; F02D41/40 ; F02M65/00 ; F02D41/04 ; F02D41/14

Abstract:
Methods and systems are provided for performing mitigating actions in response to detecting a fuel injector leak. In one example, a method may include in response to detecting a fuel injector leak, performing first high pressure mitigating actions including increasing a fuel rail pressure, increasing a pulse width delivered to the leaking fuel injector, and commanding fuel injection during compression stroke; in response to the first mitigating actions not reducing the leak below a threshold rate, performing second high pressure mitigating actions including increasing the fuel rail pressure, increasing the pulse width delivered to the leaking injector, and commanding fuel injection during intake stroke for a cylinder receiving fuel from the leaking injector; and in response to the second mitigating actions not reducing the leak below the threshold rate, reducing the fuel rail pressure, and commanding intake stroke fuel injection to all cylinders.
Public/Granted literature
- US20170260923A1 METHODS AND SYSTEMS FOR MITIGATING FUEL INJECTOR LEAK Public/Granted day:2017-09-14
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