发明名称 |
GAS SENSOR CONTROL APPARATUS CONTROLLING OUTPUT CHARACTERISTIC OF GAS SENSOR |
摘要 |
A gas sensor control apparatus is provided which controls an operation of a gas sensor made up of a solid electrolyte body and a pair of electrodes to output a signal indicating the concentration of a given gas component contained in gas. The gas sensor control apparatus includes a constant current circuit that is connected electrically to one of the electrodes of the gas sensor and supplies a constant current thereto and a controller. The controller supplies a constant current to the gas sensor so that it flows from one of the electrodes to the other in a selected direction, thereby changing a response time the gas sensor takes to react to a change in concentration of the gas component. This results in an increased accuracy, for example, in controlling an air-fuel ratio of a mixture to an internal combustion engine in an engine control system. |
申请公布号 |
US2012043205(A1) |
申请公布日期 |
2012.02.23 |
申请号 |
US201113212438 |
申请日期 |
2011.08.18 |
申请人 |
MATSUOKA MIKIYASU;KAWAKATSU YASUHIRO;NAKATA SHINGO;MISHIMA TAKAO;DENSO CORPORATION |
发明人 |
MATSUOKA MIKIYASU;KAWAKATSU YASUHIRO;NAKATA SHINGO;MISHIMA TAKAO |
分类号 |
G01N27/409;G01N27/407 |
主分类号 |
G01N27/409 |
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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