Invention Grant
- Patent Title: Method of operating an internal combustion engine with low NOx combustion
- Patent Title (中): 运行低NOx燃烧的内燃机的方法
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Application No.: US13858015Application Date: 2013-04-06
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Publication No.: US09382834B2Publication Date: 2016-07-05
- Inventor: Torsten Dieler , Dirk Haase , Ruediger Herweg
- Applicant: DAIMLER AG
- Applicant Address: DE Stuttgart
- Assignee: DAIMLER AG
- Current Assignee: DAIMLER AG
- Current Assignee Address: DE Stuttgart
- Agent Klaus J. Bach
- Priority: DE102010047796 20101007; DE102011015626 20110331
- Main IPC: F02B17/00
- IPC: F02B17/00 ; F02B5/00 ; B60T7/12 ; F02B11/00 ; F02D41/30 ; F02D41/00

Abstract:
An operating mode for an internal combustion engine, in particular a directly injected internal combustion engine having a plurality of combustion chambers, in particular for a directly injected gasoline engine, e.g. for a motor vehicle, having low NOx combustion (NAV). During the NAV operating mode that is the subject matter of this invention, at an ignition point (ZZP) a largely homogeneous, lean fuel/exhaust gas/air mixture having a combustion air ratio of λ≧1 in the respective combustion chamber is spark ignited by an ignition device, whereby the flame front combustion initiated by the ignition device (FFV) transitions to a controlled auto-ignition (RZV). The NAV operating mode enables a controlled auto-ignition to be performed in an engine load range in which a pure RZV operating mode is no longer stable enough to be implemented.
Public/Granted literature
- US20130276753A1 METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE WITH LOW NOx COMBUSTION Public/Granted day:2013-10-24
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