Invention Grant
- Patent Title: Nozzle combustion shield
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Application No.: US15573527Application Date: 2015-06-30
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Publication No.: US10451014B2Publication Date: 2019-10-22
- Inventor: Darren Ting , Patrick M. Pierz
- 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
- International Application: PCT/US2015/038597 WO 20150630
- International Announcement: WO2017/003460 WO 20170105
- Main IPC: F02M53/04
- IPC: F02M53/04 ; F02B19/12 ; F02B19/18 ; F02M21/02 ; F02M61/14 ; F01P3/02 ; F01P3/16 ; F02B19/10 ; F02B19/00

Abstract:
An apparatus and method are disclosed for an injector assembly including an injector tip having a prechamber, such as a permanent, passive prechamber (PPPC), and a nozzle combustion shield (NCS) to mitigate pre-ignition events, such as knocking, caused by overheating of the prechamber. The NCS has a thermal conductivity greater than the injector tip. The NCS optionally includes a barrel forming a slip fit with the cylinder head bore and forming a press fit with the injector tip. The NCS also optionally includes a brim to form a combustion seal with a cylinder head. As the spark plug ignites a fuel charge in the prechamber, heat is absorbed into the injector tip, flows into the NCS barrel, out of the NCS brim, and into the cylinder head for cooling via a cooling jacket.
Public/Granted literature
- US20180149125A1 NOZZLE COMBUSTION SHIELD Public/Granted day:2018-05-31
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