CAPILLARY HEATING CONTROL AND FAULT DETECTION SYSTEM AND METHODOLOGY FOR FUEL SYSTEM IN AN INTERNAL COMBUSTION ENGINE

WIPO Patent Application WO2004092558

A3

A fuel system for use in an internal combustion engine includes a plurality of fuel injectors, each injector including at least one capillary flow passage, the at least one capillary flow passage having an inlet end and an outlet end, a heat source arranged along the at least one capillary flow passage, the heat source operable to heat a liquid fuel in the at least one capillary flow passage to a level sufficient to convert at least a portion thereof from the liquid state to a vapor state, and a valve for metering fuel to the internal combustion engine, a controller to control the power supplied to the heat source of each of the plurality of fuel injectors to achieve a predetermined target temperature, a sensor for use in determining engine air flow and a sensor for measuring a value indicative of degree of engine warm-up of the internal combustion engine. The fuel system of the present invention also provides fault detection capabilities with respect to malfunctions within the capillary flow passage.

LINNA JAN-ROGER
MELLO JOHN PAUL

PCT/US2004/011344

December 16, 2004

April 09, 2004

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CHRYSALIS TECH INC (US)

F02D41/00; F02D41/06; F02D41/22; F02M31/125; F02M31/18; F02M45/08; F02M51/06; F02M53/06; F02M57/00; F02M61/08; F02M61/16; F02M61/18; F02M65/00; F02D41/18; F02M69/04; F02M69/30; F02D; (IPC1-7): F02M53/06; F02D41/22

US3999525A	1976-12-28
US5894832A	1999-04-20
EP1239134A2	2002-09-11
US20010020469A1	2001-09-13
US20030178010A1	2003-09-25

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