发明名称 |
Alcohol concentration sensor for automotive fuels |
摘要 |
An electronic sensor (20) for measuring methanol content in gasoline fuels for automotive engines including a sensing coil (108/108') and a paired capacitance element (42,44/42',44') that cooperates with the coil to define an oscillating circuit wherein the gasoline methanol fuel mixture is used as a dielectric for the capacitor elements of the sensor, a change in the methanol concentration in the fuel resulting in a change in the dielectric constant of the sensor (20) which results in a change in the resonant frequency of the capacitor elements (108/108',42,44/42',44'), and a microprocessor circuit (160) which responds to a change in the oscillating frequency to establish a control signal that may be used by an automotive powertrain controller (24) to effect appropriate adjustments in the air/fuel ratio and ignition timing for the engine (10) to compensate for variations in the methanol content of the fuel. |
申请公布号 |
US5255656(A) |
申请公布日期 |
1993.10.26 |
申请号 |
US19920844958 |
申请日期 |
1992.02.28 |
申请人 |
BORG-WARNER AUTOMOTIVE, INC. |
发明人 |
RADER, RICHARD K.;BARR, RODNEY E.;VOGT, CARL R. |
分类号 |
F02B1/04;F02D19/08;G01N27/22;G01N33/28;(IPC1-7):F02M51/00 |
主分类号 |
F02B1/04 |
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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