发明名称 |
Sensor and sensing method |
摘要 |
A system (144) comprising a sensor (22), a reformer (146), a reformer electronic control module (150) and a sensor control module (152), wherein the sensor (22) includes an oxygen pump cell (24); an oxygen pump chamber (26); an emf cell (32); a reference chamber (34) providing a fluid connection to the reference gas (30); gas channels in fluid communication with the pump (48,52) and emf electrodes (64,66), the reference gas (30) comprising reformate produced by fuel reformer (146) fuelled by an air-fuel gas mixture having an air-fuel ratio; a heater (72); a temperature sensor (70) disposed in communication with the heater (72) and the sensor control module (152) for maintaining the sensor (22) at a desired operating temperature; a closed loop controlled operation amplifier (40) in electrical communication with the sensor (22), whereby the oxygen pump cell (24) provides sufficient oxygen ions to oxidize an incoming diffusion-limiting fuel flux to the emf cell (32) and maintain a constant emf at the emf cell (32), and wherein a current value represents an equivalent to the air-fuel ratio of the air-fuel gas mixture. |
申请公布号 |
EP1793224(B1) |
申请公布日期 |
2015.09.09 |
申请号 |
EP20060077100 |
申请日期 |
2006.11.24 |
申请人 |
DELPHI TECHNOLOGIES, INC. |
发明人 |
WANG, DA YU;KIRWAN, JOHN E.;SYMONS, WALTER THOMAS;KUPE, JOACHIM;FARHAT, ROBERT JEROME |
分类号 |
H01M8/04;G01K7/16;G01N27/419;H01M8/06 |
主分类号 |
H01M8/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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