[특허]Coolant flow monitoring system for an engine cooling system

Brunswick Corporation

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Coolant flow monitoring system for an engine cooling system

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01M-015/00
미국특허분류(USC)	073/118.1; 073/861.52
출원번호	US-0462418 (2003-06-16)
발명자 / 주소	Jaeger, Matthew W.
출원인 / 주소	Brunswick Corporation
인용정보	피인용 횟수 : 12 인용 특허 : 7

초록
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A flow monitor is removably connectable in serial fluid communication with a coolant conduit of an engine cooling system. By providing a flow restrictor between upstream and downstream ports, a differential pressure is created between the upstream and downstream ports. The measured magnitude of this differential pressure allows a microprocessor, or similarly configured component, to determine the actual flow rate of the coolant passing through the coolant conduit between the upstream and downstream pressure sensing ports. In this way, actual flow is meas...

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1. A coolant flow monitoring system for an engine cooling system, comprising:an engine having a heat producing component;a coolant passage disposed in thermal communication with said heat producing component;a coolant conduit connected in fluid communication with said coolant passage;a flow restrictor disposed within said coolant conduit;a first pressure sensing location of said coolant conduit;a second pressure sensing location of said coolant conduit, said flow restrictor being between said first and second pressure sensing locations; anda differential pressure sensing device connected in pressure sensing relation with said first and second pressure sensing locations, whereby a differential pressure between said first and second pressure sensing locations is representative of a magnitude of coolant flow passing through said coolant conduit, said differential pressure sensing device comprising a first pressure sensor connected in pressure sensing relation with said coolant conduit at said first pressure sensing location and a second pressure sensor connected in pressure sensing relation with said coolant conduit at said second pressure sensing location.2. The coolant flow monitoring system of claim 1, wherein:said first and second pressure sensing locations are disposed on a tubular member which is removably connected in serial fluid communication with said coolant conduit; andsaid flow restrictor is disposed within said tubular member between said first and second pressure sensing locations.3. The coolant flow monitoring system of claim 1, wherein:said flow restrictor is an orifice formed in a wall disposed within said coolant conduit between said first and second pressure sensing locations.4. The coolant flow monitoring system of claim 1, wherein:said flow restrictor is a venturi passage disposed within said coolant conduit between said first and second pressure sensing locations.5. The coolant flow monitoring system of claim 1, wherein:said flow restrictor is an inherent resistance to coolant flow within said coolant conduit between said first and second pressure sensing locations.6. The coolant flow monitoring system of claim 1, wherein:said differential pressure sensing device comprises a microprocessor which is connected in signal communication with said first and second pressure sensors and configured to determine a coolant flow magnitude as a function of first and second pressures provided by said first and second pressure sensors.7. The coolant flow monitoring system of claim 1, wherein:said differential pressure sensing device comprises a microprocessor which is configured to determine a coolant flow magnitude as a function of a differential pressure magnitude between said first and second pressure sensing locations.8. A coolant flow monitoring system for an engine cooling system, comprising:an engine having a heat producing component;a coolant passage disposed in thermal communication with said heat producing component;a coolant conduit connected in fluid communication with said coolant passage;a flow restrictor disposed within said coolant conduit;a first pressure sensing location of said coolant conduit;a second pressure sensing location of said coolant conduit, said flow restrictor being between said first and second pressure sensing locations; anda first pressure sensor connected in pressure sensing relation with said coolant conduit at said first pressure sensing location;a second pressure sensor connected in pressure sensing relation with said coolant conduit at said second pressure sensing location, whereby a difference between a first measured pressure at said first pressure sensing location and a second measured pressure at said second pressure sensing location, provided by said first and second pressure sensors, respectively, is representative of a rate of coolant flow passing through said coolant conduit.9. The coolant flow monitoring system of claim 8, further comprising:a microprocessor connected in signal communication with said first and second pressure sensors and configured to determine said rate of coolant flow as a function of said first and second measured pressures provided by said first and second pressure sensors.10. The coolant flow monitoring system of claim 9, wherein:said first and second pressure sensing locations are disposed on a tubular member which is removably connected in serial fluid communication with said coolant conduit; andsaid flow restrictor is disposed within said tubular member between said first and second pressure sensing locations.11. The coolant flow monitoring system of claim 9, wherein:said flow restrictor is an orifice formed in a wall disposed within said coolant conduit between said first and second pressure sensing locations.12. The coolant flow monitoring system of claim 9, wherein:said flow restrictor is a venturi passage disposed within said coolant conduit between said first and second pressure sensing locations.13. The coolant flow monitoring system of claim 9, wherein:said flow restrictor is an inherent resistance to coolant flow within said coolant conduit between said first and second pressure sensing locations.14. A coolant flow monitoring system for an engine cooling system, comprising:a tubular member having an inlet end and an outlet end;a first pressure sensing port disposed in fluid communication with an internal passage of said tubular member;a second pressure sensing port disposed in fluid communication with said internal passage of said tubular member;a flow restrictor disposed within said tubular member between said first and second pressure sensing ports; anda microprocessor, connected in signal communication with a pressure sensing system, configured to determine a rate of coolant flow through said tubular member as a function of a differential pressure magnitude between said first and second pressure sensing ports;an engine having a heat producing component;a coolant passage disposed in thermal communication with said heat producing component; anda coolant conduit connected in fluid communication with said coolant passage, said tubular member being connected in serial fluid communication with said coolant conduit, said pressure sensing system comprising first and second pressure sensors disposed in pressure sensing relation with said first and second pressure sensing ports.15. The coolant flow monitoring system of claim 14, wherein:said flow restrictor is an orifice formed in a wall disposed within said coolant conduit between said first and second pressure sensing locations.16. The coolant flow monitoring system of claim 14, wherein:said flow restrictor is a venturi passage disposed within said coolant conduit between said first and second pressure sensing locations.17. The coolant flow monitoring system of claim 16, wherein:said engine is an internal combustion engine of a marine propulsion system.

이 특허에 인용된 특허 (7)

이 특허를 인용한 특허 피인용횟수: 12

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Coolant flow monitoring system for an engine cooling system

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Coolant flow monitoring system for an engine cooling system

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이 특허에 인용된 특허 (7)

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