Invention Grant
- Patent Title: Method and device for detecting the presence of an exhaust gas treatment system in an exhaust line of an internal combustion engine
- Patent Title (中): 用于检测内燃机的排气管线中废气处理系统的存在的方法和装置
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Application No.: US11915936Application Date: 2006-05-15
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Publication No.: US07937994B2Publication Date: 2011-05-10
- Inventor: Laurent Leprieur , Vincent Rouault , Cyril Pradeilles
- Applicant: Laurent Leprieur , Vincent Rouault , Cyril Pradeilles
- Applicant Address: FR Boulogne Billancourt
- Assignee: Renault S.A.S.
- Current Assignee: Renault S.A.S.
- Current Assignee Address: FR Boulogne Billancourt
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: FR0505515 20050531
- International Application: PCT/FR2006/050440 WO 20060515
- International Announcement: WO2007/003816 WO 20070111
- Main IPC: G01M15/10
- IPC: G01M15/10
Abstract:
A method and device for detecting presence of an exhaust gas treatment system in an exhaust line of an internal combustion engine. The method determines the derivative of the temperature upstream of the treatment system, determines the derivative of the temperature downstream of the treatment system, and compares the downstream temperature derivative with a threshold value for detecting absence of the treatment system using a pre-determined upstream temperature derivative level.
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