Invention Grant
- Patent Title: Method and device for controlling the exhaust gas recirculation in an internal-combustion engine based on the measurement of the oxygen concentration in the gaseous mixture taken in by the engine
- Patent Title (中): 基于由发动机所摄入的气体混合物中的氧浓度的测量来控制内燃机中废气再循环的方法和装置
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Application No.: US11116364Application Date: 2005-04-28
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Publication No.: US07267117B2Publication Date: 2007-09-11
- Inventor: Marco Tonetti , Enrico Lanfranco , Andrea Ruggiero
- Applicant: Marco Tonetti , Enrico Lanfranco , Andrea Ruggiero
- Applicant Address: IT Orbassano
- Assignee: C.R.F. Societa Consortile per Azioni
- Current Assignee: C.R.F. Societa Consortile per Azioni
- Current Assignee Address: IT Orbassano
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: EP04425445 20040615
- Main IPC: F02B47/08
- IPC: F02B47/08 ; F02D41/00 ; F02M25/00
Abstract:
A method and a device for controlling the exhaust gas recirculation in an internal-combustion engine are described herein. The engine is provided with an air-intake system, a gas-exhaust system, and an exhaust-gas-recirculation system. A linear oxygen sensor is arranged along the air-intake system in a section traversed, in use, by the air/recirculated-exhaust-gas mixture, for measuring the oxygen concentration in the mixture itself An electronic control unit is connected to the oxygen sensor and to the exhaust-gas-recirculation system for controlling the flow rate of recirculated exhaust gases on the basis of the oxygen concentration in the mixture taken in by the engine. In particular, the oxygen sensor is a UHEGO probe.
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