EP 2122142 A1 20091125 - FUEL COMPOSITION SENSING SYSTEMS AND METHODS USING EMF WAVE PROPAGATION
Title (en)
FUEL COMPOSITION SENSING SYSTEMS AND METHODS USING EMF WAVE PROPAGATION
Title (de)
KRAFTSTOFFZUSAMMENSETZUNGSERFASSUNGSSYSTEME UND -VERFAHREN UNTER VERWENDUNG VON EMK-WELLENAUSBREITUNG
Title (fr)
SYSTÈMES DE DÉTECTION DE COMPOSITION DE CARBURANT ET PROCÉDÉS UTILISANT LA PROPAGATION D'ONDES EN FRÉQUENCES EM
Publication
Application
Priority
- US 2007025979 W 20071218
- US 87543906 P 20061218
- US 80096507 A 20070508
Abstract (en)
[origin: WO2008076453A1] A flex fuel sensor is deployed in conjunction with the fuel transfer line (e.g. around a plastic fuel line) or at the bottom/side of a fuel tank. An RF signal of a constant frequency may be generated across a resonant circuit, which comprises of an inductor and a PCB trace capacitor, capacitor plates, semi cylindrical capacitor plates, or the like. Electromagnetic radiation is propagated into the passing fuel in the transfer pipe. The conductivity and dielectric properties of the fuel change the capacitance of the trace capacitor/capacitor plates. These changes are proportional to ethanol/alcohol content of the fuel and are preferably detected by a microcontroller, or the like, and then transmitted to a flex fuel vehicle Engine Management System.
IPC 8 full level
F02D 19/08 (2006.01); G01N 27/22 (2006.01); G01N 33/28 (2006.01)
CPC (source: EP KR)
F02D 19/08 (2013.01 - KR); F02D 45/00 (2013.01 - KR); G01F 23/266 (2013.01 - EP); G01N 27/22 (2013.01 - KR); G01N 27/221 (2013.01 - EP); G01N 33/28 (2013.01 - KR); G01N 33/2852 (2013.01 - EP); F02D 2200/0611 (2013.01 - EP)
Citation (search report)
See references of WO 2008076453A1
Citation (examination)
WO 2006122173 A2 20061116 - SCHRADER BRIDGEPORT INT INC [US], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008076453 A1 20080626; AU 2007334349 A1 20080626; AU 2007334349 B2 20110623; BR PI0720456 A2 20140114; CA 2672845 A1 20080626; EP 2122142 A1 20091125; JP 2010513926 A 20100430; KR 101083908 B1 20111115; KR 20090100408 A 20090923; MX 2009006440 A 20090824
DOCDB simple family (application)
US 2007025979 W 20071218; AU 2007334349 A 20071218; BR PI0720456 A 20071218; CA 2672845 A 20071218; EP 07863138 A 20071218; JP 2009542905 A 20071218; KR 20097014788 A 20071218; MX 2009006440 A 20071218