[특허]Bi-directional automotive cooling fan

[미국특허] Bi-directional automotive cooling fan 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60K-011/00
출원번호	US-0413900 (2003-04-14)
발명자 / 주소	MacKelvie,Winston
출원인 / 주소	MacKelvie,Winston
인용정보	피인용 횟수 : 16 인용 특허 : 19

초록 ▼

The instant invention pertains to a road vehicle's axial flow cooling fan which normally draws cooling air from in front of the vehicle and blows it into the engine bay. The instant invention includes a control circuit for the fan motor that provides variable speed and bi-directional, or reverse and normal, fan operation. Reverse fan operation blows air from the engine bay through the radiator and out the front of the vehicle, and normal fan operation blows into the engine bay. Two input sensors feed the control circuit, one for road speed of the vehicle and other for engine temperature. When the engine is below its operating temperature and the vehicle is moving, the fan is made to blows in reverse at a speed proportional to road speed so as to block cold ram air from entering and blasting onto a warming engine. This speeds engine warm-up to reduce emissions, improve fuel economy, and speed windshield defogging. The fan may also be made to blow in reverse when the engine is cold and the vehicle is stopped, in order that exhaust-heated air from the exhaust manifold behind the engine, may be drawn forward over the engine block to speed its warming. When the engine is above its operating temperature and the vehicle is idling or moving slowly, as in traffic, then the control circuit causes the fan to again blow in reverse cooling both the radiator and the engine bay components and preventing hot, noxious fumes from vehicles in front from being drawn into the vehicle. Blowing in reverse in traffic conditions also eliminates hot air looping back to the front of the car and drawn in through the radiator. As vehicle speed increases, the fan is made to revert to normal operation augmenting ram air flow through the radiator.

대표청구항 ▼

I claim: 1. In a vehicle having a front engine bay with an engine located therein, a radiator having a coolant circulating therein, and an axial flow cooling fan for circulating air through said radiator; the improvement comprising: a motor operative to drive said axial flow cooling fan in both a forward and a reverse direction, said forward direction being one wherein said fan blows air from said radiator through said engine bay; temperature sensing means for measuring the temperature of said coolant and to provide a temperature signal responsive thereto; vehicle speed sensing means for measuring the speed of the vehicle and to provide a vehicle speed signal; and a control circuit to receive said temperature signal and said vehicle speed signal and to control the direction of operation of said axial flow cooling fan in response to said signals, said control circuit being operative to cause said fan to operate in a reverse direction when said vehicle is moving above a predetermined speed and said temperature is below a first preset level; said control circuit also being operative to cause said fan to operate in a reverse direction when said vehicle is moving below a predetermined speed and said temperature is above a second preset level. 2. The improvement of claim 1 wherein said control circuit is operative to control the speed of said axial flow cooling fan according to said vehicle speed signal.

이 특허에 인용된 특허 (19) 인용/피인용 타임라인 분석

Charles Herbert N. (Chatham CAX), Automotive vehicle engine bay ventilation.
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Ikuo Kita JP; Toshikazu Okada JP; Atsushi Uemura JP; Shigeru Yamamoto JP; Tomohiro Nakagawa JP, Controlling device for hydraulically operated cooling fan.
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Yamagishi Yoshinori,JPX, Cooling device for a construction machine.
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Yuuichi Yamamoto JP, Cooling fan drive control device.
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Osahiro Konno JP; Kazuyuki Sagara JP; Yutaka Tanaka JP, Cooling system for working vehicle.
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Ngy Srun Ap FR; Mathieu Chanfreau FR; Arnaud Maire FR, Device for regulating the cooling of a motor-vehicle internal-combustion engine in a hot-starting state.
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Gallivan William P.,CAX ; Kershaw Peter A.,CAX, Ducted cooling system with radial-flow fan.
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Yamada Naoki (Tokyo JPX) Yamamoto Yasushi (Kanagawa JPX), Electric motor fan control system for vehicle.
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King James A. (Schofield WI), Engine component heating and cooling assembly.
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Till Ronald H., Engine cooling apparatus and method.
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Murata Shinichi,JPX ; Kubo Masahiko,JPX ; Kataoka Tetsuo,JPX ; Hatano Kiyoshi,JPX, Engine cooling system.
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Lehnhoff Richard N. (Kettering OH) Staker William C. (Springfield OH), Internal combustion engine radiator cooling fan drive motor control system.
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Corriveau Anthony F.J.,CAX, Internal combustion engine total cooling control system.
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Bokkers Ron,CAX ; Joseph Alex,CAX ; Rossing Bjorn,SEX, Total cooling assembly for a vehicle having an internal combustion engine.
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Isert Clarence (Dewberry CAX), Variable pitch fan.
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Jonathan E. McCallum CA; Brian J. Bruchal CA; Murray C. Gerwing CA, Variable pitch fan.
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Acre James A ; McCarthy Daniel P. ; Rose Richard A. ; Ryan Richard Paul, Vehicle fan shroud and component cooling module.
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John F. O'Brien ; Robert Michael Runk ; Lindsey Lee Leitzel, Vehicle front end air control.
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James A Acre ; Wayne Oliver Forrest, Vehicle with rapid heater warm up.
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이 특허를 인용한 특허 (16) 인용/피인용 타임라인 분석

Jeong, Ji Hoon; Lee, Moon Seok; Park, Dong Chul; Lim, Ji Min, Apparatus for generating operating sound of vehicle.
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Pairaktaridis, John, Brushless cooling fan.
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Pairaktaridis, John, Brushless cooling fan.
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Glugla, Chris Paul; Huberts, Garlan J.; Surnilla, Gopichandra; Styles, Daniel Joseph; Bidner, David Karl, Condensation control in a charge air cooler by controlling charge air cooler temperature.
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Glugla, Chris Paul; Huberts, Garlan J.; Surnilla, Gopichandra; Styles, Daniel Joseph; Bidner, David Karl, Condensation control in a charge air cooler by controlling charge air cooler temperature.
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Smith, Jeffrey P., Directed air systems for improving aerodynamics of a vehicle.
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Smith, Jeffrey P., Directed gas systems for improving aerodynamics of a vehicle in cross wind conditions.
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Dudar, Aed M., Engine cooling fan operation during hot soak.
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Jones, Kirk; Metzler, Kenneth Wayne, Inline cooling fan reverser.
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Miura, Shimpei, Radiator fan control for heat pump HVAC.
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Miura, Shimpei, Radiator fan control for heat pump HVAC.
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Smemo, Alfred Sigmund; Whiteman, Steven Ryan; Kruse, Ryan John, Reversible mechanical fan.
상세보기
Robinson, James S., Variable pitch radiator fan control system.
상세보기
Robinson, James S., Variable pitch radiator fan control system.
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Nagahama, Satoshi; Evans, Nic, Vehicles incorporating cooling drag reduction systems and methods.
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MacGregor, Don; Garbald, Jann Peter, Windrower tractor with parallel heat exchangers for cooling of engine and associated fluids.
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[미국특허] Bi-directional automotive cooling fan 원문보기