Method for detecting clogging in a fuel filter in an internal combustion engine supply circuit
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01M-015/00
출원번호
US-0857918
(2001-06-11)
우선권정보
FR-0015755 (1998-12-14)
국제출원번호
PCT/FR99/03098
(1999-12-10)
국제공개번호
WO00/36291
(2000-06-22)
발명자
/ 주소
Mazet, Henri
출원인 / 주소
Magneti Marelli France
대리인 / 주소
Sturm & Fix LLP
인용정보
피인용 횟수 :
41인용 특허 :
8
초록▼
The invention concerns a method for detecting clogging in a fuel filter, between a fuel pressure regulator imposing a pressure towards the internal combustion engine downstream of the filter and an electric motor pump compressing fuel coming from the tank towards the regulator through the filter whi
The invention concerns a method for detecting clogging in a fuel filter, between a fuel pressure regulator imposing a pressure towards the internal combustion engine downstream of the filter and an electric motor pump compressing fuel coming from the tank towards the regulator through the filter which consists in: determining the fuel pressure at the pump output and by considering it as the fuel pressure at the filter intake; determining the fuel pressure at the filter outlet as being the pressure imposed by the regulator; determining the pressure drop of the filter from the difference between the filter input and output pressure levels, and by comparing at least a value based on the pressure drop with at least a reference value to deduce therefrom information concerning the clogging condition of the filter. The invention is applicable to preventive or predictive maintenance of fuel supply circuits in internal combustion engines.
대표청구항▼
The invention concerns a method for detecting clogging in a fuel filter, between a fuel pressure regulator imposing a pressure towards the internal combustion engine downstream of the filter and an electric motor pump compressing fuel coming from the tank towards the regulator through the filter whi
The invention concerns a method for detecting clogging in a fuel filter, between a fuel pressure regulator imposing a pressure towards the internal combustion engine downstream of the filter and an electric motor pump compressing fuel coming from the tank towards the regulator through the filter which consists in: determining the fuel pressure at the pump output and by considering it as the fuel pressure at the filter intake; determining the fuel pressure at the filter outlet as being the pressure imposed by the regulator; determining the pressure drop of the filter from the difference between the filter input and output pressure levels, and by comparing at least a value based on the pressure drop with at least a reference value to deduce therefrom information concerning the clogging condition of the filter. The invention is applicable to preventive or predictive maintenance of fuel supply circuits in internal combustion engines. g: a display device coupled to the computer and operable to display the calculated test fluid flow rates through each of the fuel nozzles. 5. The apparatus of claim 1, further comprising: a flow sensor in fluid communication with the one or more test fluid supply lines and electrically coupled to the computer, the flow sensor operable to generate a flow signal representative of the test fluid flow rate through the supply lines to the fuel manifold, wherein the computer periodically samples the flow signal and determines the flow rate through the supply lines therefrom. 6. The apparatus of claim 5, further comprising: a display device coupled to the computer and operable to display the calculated test fluid flow rates through each of the fuel nozzles and the determined fuel flow rate through the supply lines. 7. The apparatus of claim 1, further comprising: one or more pressure sensors in fluid communication with the one or more fluid supply lines and electrically coupled to the computer, the pressure sensors each operable to generate a pressure signal representative of test fluid pressure in the supply lines, wherein the computer periodically samples the pressure signals and determines the pressure in the supply lines therefrom. 8. The apparatus of claim 7, further comprising: a display device coupled to the computer and operable to display the determined pressure in the supply lines. 9. The apparatus of claim 1, further comprising: a fluid return line coupled to, and providing fluid communication between, each of the fluid measurement vessels and the test fluid supply tank. 10. The apparatus of claim 9, further comprising: a jet pump coupled in flow-series in the fluid return line. 11. The apparatus of claim 9, further comprising: a plurality of remotely operated drain valves individually coupled between the fluid return line and each of the fluid measurement vessels. 12. The apparatus of claim 11, wherein the drain valves are operated in response to commands issued by the computer. 13. The apparatus of claim 1, wherein each of the measurement vessels comprises: a first vessel including a nozzle receiving portion adapted to receive one of the fuel nozzles therein; and a second vessel in fluid communication with the first vessel, and including a sensor receiving portion adapted to receive one of the level sensors therein. 14. The apparatus of claim 13, wherein the first vessel includes a substantially transparent portion proximate the nozzle receiving portion, whereby a test fluid spray pattern from the fuel nozzle is observable. 15. The apparatus of claim 1, wherein the one or more test fluid supply lines each include an in-line valve coupled between the test fluid inlet and test fluid outlet, wherein pressure of the test fluid supplied to the fuel manifold is adjusted by operation of the in-line valves. 16. The apparatus of claim 15, wherein the one or more in-line valves are remotely operated. 17. The apparatus of claim 15, wherein the one or more remotely operated in-line valves are positioned automatically in response to commands issued by the computer. 18. The apparatus of claim 1, wherein each of the level sensors comprises: a tube extending longitudinally within the measurement vessel; a magnet assembly surrounding a portion of the tube, the magnet assembly emitting a magnetic field and operable to move axially along the tube in response to a changing fluid level; a transducer electrically coupled to the tube and operable to periodically transmit electrical pulses and receive reflected pulses, wherein the reflected pulses are generated based on interaction of the transmitted pulses with the magnetic field emitted by the magnet assembly. 19. The apparatus of claim 1, further comprising a display device operable to display the level of the test fluid in each of the fluid measurement vessels based on the generated level signals. 20. The apparatus of claim 19, wherein
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이 특허에 인용된 특허 (8)
Claret Pierre J. E. (Nandy FRX), Apparatus for detecting operational anomalies in pressurized fluid circuits.
Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Westermann-Rasmussen, Peter; Kjaer, Gert; Lungeanu, Florin, Anti-entrapment and anti-dead head function.
Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Westermann-Rasmussen, Peter; Kjaer, Gert; Lungeanu, Florin, Anti-entrapment and anti-dead head function.
Boese, Thomas G.; Bishop, Michael B.; Ambrose, Jeffrey C.; Emerson, John; Paton, David E.; Mazza, Joseph J., Battery backup sump pump systems and methods.
Kidd, Melissa Drechsel; Genaw, William James; Pasche, Micheal Robert; Baase, II, Gary Thomas; Berthelsen, Lars Hoffmann; Fink, Rasmus; Holm, Martin Skov, Method of controlling a pump and motor.
Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher; Hruby, Daniel J.; Murphy, Kevin; Runarsson, Einar Kjartan; Hansen, Arne Fink; Lungeanu, Florin; Westermann-Rasmussen, Peter, Pumping system with housing and user interface.
Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher R.; Runarsson, Einar Kjartan, Pumping system with power optimization.
Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher R.; Runarsson, Einar Kjartan, Pumping system with power optimization.
Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher; Runarsson, Elnar Kjartan, Pumping system with power optimization.
Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher R.; Hruby, Daniel J.; Murphy, Kevin; Brown, Edward; MacCallum, David; Dunn, Dennis; Clack, Kenneth; Runarsson, Einar Kjartan; Morando, Alberto, Pumping system with two way communication.
Kidd, Melissa Drechsel; Genaw, William James; Pasche, Micheal Robert; Baase, II, Gary Thomas; Berthelsen, Lars Hoffmann; Fink, Rasmus; Holm, Martin Skov, Safety system and method for pump and motor.
Kidd, Melissa Drechsel; Genaw, William James; Pasche, Micheal Robert; Baase, II, Gary Thomas; Berthelsen, Lars Hoffmann; Fink, Rasmus; Holm, Martin Skov, Safety system and method for pump and motor.
Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher R.; Hruby, Daniel J.; Murphy, Kevin; Runarsson, Einar Kjartan; Hansen, Arne Fink; Lungeanu, Florin; Westermann-Rasmussen, Peter, Speed control.
Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher; Hruby, Daniel J.; Murphy, Kevin; Runarsson, Einar Kjartan; Hansen, Arne Fink; Lungeanu, Florin; Westermann-Rasmussen, Peter, Speed control.
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