Title:
容量型燃料センサー
Document Type and Number:
Japanese Patent JP2004526170
Kind Code:
A
Abstract:
A fuel sensor ( 20 ) includes a single capacitor ( 22 ) that operates in two different modes to obtain capacitance and conductance information when a fuel mixture flows between the electrodes ( 24, 26 ) of the capacitor. Two different oscillators ( 180, 182 ) are selectively used to obtain the conductance and capacitance information. In a disclosed embodiment, a capacitor includes an outer electrode ( 24 ) that is received around an inner electrode ( 26 ) such that there is a spacing between the electrodes through which the fuel flows. The fuel acts as a dielectric of the capacitor allowing the conductance and capacitance measurements to be made. The inventive fuel sensor can be readily incorporated into a variety of locations within a vehicle fuel supply system depending on the needs of a particular situation. In one example, a portion of the fuel rail ( 132 ) is used as one of the electrodes of the capacitor.
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Inventors:
Ban Sullen, Dave
Desmiere, isabel
Mouaiishi, Gerald
Bernardo, Francois-Xavier
Desmiere, isabel
Mouaiishi, Gerald
Bernardo, Francois-Xavier
Application Number:
JP2002589780A
Publication Date:
August 26, 2004
Filing Date:
May 17, 2002
Export Citation:
Assignee:
Siemens VDO Automotive Corporation
International Classes:
G01N27/06; G01N27/07; G01N27/22; G01N33/28; (IPC1-7): G01N27/22; G01N27/06; G01N27/07
Attorney, Agent or Firm:
Koichiro Kato