[특허]Electronically controlled lean out device for mechanical fuel injected engines

Electronically controlled lean out device for mechanical fuel injected engines 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02D-041/00 F02D-041/14
출원번호	US-0251468 (2014-04-11)
등록번호	US-9638126 (2017-05-02)
발명자 / 주소	Vosburg, Delbert
출원인 / 주소	Vosburg, Delbert
대리인 / 주소	White-Welker & Welker, LLC
인용정보	피인용 횟수 : 0 인용 특허 : 35

초록 ▼

A device for the electronically controlled lean out of mechanical fuel injected engines comprising a wide band air fuel ratio sensor and a printed circuit board (PCB) connected to the wide band air fuel ratio gauge/controller. The printed circuit board (PCB) is connected to the wide band air fuel ratio sensor's power, ground, and signal wires. The computer controlled stepper motor is connected to the printed circuit board (PCB). A variable valve spool is retained in a fuel block and connected to the computer controlled stepper motor. Rotating the variable valve spool continuously adjusts and controls the air fuel ratio of the engine in real time by regulating the amount of fuel returned the fuel tank and the amount of fuel delivered to the barrel valve in a mechanically fuel injected engine. A jet can be used in combination with the fuel bock to further fine tune the fuel flow.

대표청구항 ▼

1. A device for the electronically controlled lean out of mechanical fuel injected engines comprising in combination: a fuel tank or cell;a fuel pump;a shut off lever; provided after the fuel pump to allow the fuel to be shutoff and returned to the fuel tank when the fuel pump is running but no fuel to the engine is desired;when the shut off lever is opened and the engine is running, fuel is allowed to flow;a barrel valve connected to the shut-off lever;a variable valve spool contained within a fuel block for regulating fuel flow connected to the shut-off lever;the barrel valve and variable valve spool connected from a “T” fitting or junction;the “T” fitting or junction directs fuel flow to either the barrel valve and toward the engine, or toward the variable valve spool contained within a fuel block for regulating fuel flow;fuel directed to the barrel valve is sent to the engine at wide open throttle and is delivered to the engine through one or more injectors;a main jet provides coarse adjustment for the excess fuel returned to the fuel tank and not used by the injectors;fuel directed to variable valve spool contained within a fuel block for regulating fuel flow returns to the fuel cell through a 1 lb check valve; andthe regulated and adjusted fuel is then returned to the fuel tank; andwherein the variable valve spool contained within a fuel block for regulating fuel flow is further comprised of:a first fuel block body side is comprised of shaft hole with a lip seal and machined o-ringed grove on the interior surface for retaining an O-ring to seal the two body sections/sides and when bolted together; anda second fuel block body side is comprised of and interior surface comprising an inlet fuel port and outlet fuel port, connected by a cylindrical opening where a cylindrical shaped variable valve spool is retained that allows for the regulation of a fuel flow. 2. The device of claim 1, wherein the main jet return line contains a 1 lb. check valve is provided for idle purposes to ensure the engine will run and idle during under partial throttle conditions; andat idle, the barrel valve sends fuel to the engine and through a secondary bypass valve containing a 15 lb. check valve to return unused fuel to the tank. 3. The device of claim 1, wherein the variable valve spool is controlled by a stepper motor and printed circuit board (PCB) as directed by signals from a wideband O2 sensor located in the exhaust; andthe variable valve spool contained within a fuel block for regulating fuel flow limits the amount of fuel returned to the tank before the barrel valve to keep the engine running at a desired AFR. 4. The device of claim 2, further comprising a main jet located between the variable valve spool contained within a fuel block for regulating fuel flow and the injector is used for coarse tuning. 5. The device of claim 1, wherein the interior surface of the second body side is comprised of inlet fuel port and outlet fuel port which passes fuel through the cylindrical opening where the cylindrical shaped variable valve spool is retained;the fuel flows from the inlet port fuel intersection through the cylindrical opening and through a valley or “v” channel in the variable valve spool and into the outlet port; anda dead area is provided to shut fuel off in the event of a lean condition. 6. The device of claim 1, further comprising a cylindrical protrusion limits the travel of the cylindrical shaped variable valve spool when retained inside the orifice; andthe protrusion matches and corresponds to a half-moon shape in the bottom of the spool where the protrusion allows the variable valve spool to rotated around the shaft axis from end to end of the machined half-moon shape and stops the spool's motion when the protrusion and end point of the machined half-moon shape and protrusion make contact. 7. The device of claim 1, further comprising a flat circular low friction area is provided to reduce friction only;the center of the bottom of the spool rides along and against the low friction area to provide smooth movement of the spool. 8. The device of claim 7, wherein the low friction area is further comprised of a set screw with a coated, low friction end surface and a lock nut;the set screw is screwed into the second body side and the pressure exerted on the spool bottom is adjustable; andwhen the desired pressure is set to retain the spool in its location, the lock nut is tighten to retain the set screw and coated low friction end surface securely in place at the desired setting. 9. The device of claim 8, wherein the variable valve spool is comprised of a seal surface area;two friction reduction grooves 134 and 135;a fuel channel;when the variable valve spool is placed within the body, the lip seal provides a leak free, low friction connection between the stepper motor shaft and the variable valve spool;the opposing end of the variable valve spool from the shaft rides against the coated low friction end surface of the interior of the second body side for further friction reduction;the valley or “v” shaped fuel channel is aligned with the fuel channel of the inlet port 102 and outlet port 104 area of the interior of the second body side;fuel flows through this area only;the flow is variable due to the changing depth of the valley or “v” groove; andas the spool is rotated, an increase or decrease in fuel occurs as more or less of the valley or “v” grove is used to channel fuel from port the inlet port to the outlet port, resulting in a change in fuel delivery to the engine and an adjustment of the air fuel ratio. 10. The device of claim 7, further comprising two additionally machined channels adjacent to the valley or “v” shaped fuel channel.

이 특허에 인용된 특허 (35)

Hattori Tadashi (Okazaki JPX) Takata Akira (Toyota JPX) Fukuda Tamotsu (Toyota JPX) Nakase Takamichi (Gamagori JPX), Air flow amount adjusting system for an internal combustion engine.
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Hattori Tadashi (Okazaki JPX) Takata Akira (Toyota JPX) Fukuda Tamotsu (Toyota JPX) Nakase Takamichi (Gamagori JPX), Air flow amount adjusting system for an internal combustion engine.
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Sumiyoshi Masaharu (Toyota JPX), Air-fuel ratio control device.
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Aono Shigeo (Tokyo JA), Air-fuel ratio control system for use with internal combustion engine.
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Hattori Tadashi (Okazaki JPX) Takata Akira (Toyota JPX) Fukuda Tamotsu (Toyota JPX) Nakase Takamichi (Gamagori JPX), Air-fuel ratio controlling apparatus for an internal combustion engine.
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Kimata Kei (Shizuoka JPX) Nakazeki Tsugito (Iwata JPX) Harada Haruhisa (Kakegawa JPX), Apparatus for controlling the air fuel mixture of an internal combustion engine.
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Bianchi Valerio (Hochdorf DE1) Latsch Reinhard (Vaihingen DE1), Apparatus for determining the injected fuel quantity in mixture compressing internal combustion engines.
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Masui Takatoshi (Susono JPX) Mituyasu Masaki (Susono JPX), Device for controlling the air-fuel ratio of a mixture.
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Maisch Wolfgang (Schwieberdingen DEX) Peters Klaus-Jrgen (Affalterbach DEX) Wissmann Michael (Gerlingen DEX) Gmelin Karl (Ingelfingen DEX), Diaphragm pressure regulator.
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Suzuki Takashi,JPX ; Shimokawa Kiyohiro,JPX ; Yokota Haruyuki,JPX ; Kudo Yugo,JPX ; Shimoda Masatoshi,JPX ; Kakegawa Toshiaki,JPX, Diesel engine.
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Rivere Jean-Pierre (Paris FR), Electro-pneumatic device for regulating the supply of air to an internal combustion engine.
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Goulet Carl R. (Daphne AL), Electronic and mechanical fuel supply system.
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Manaka Nobuzi (Yokosuka JPX) Fujishiro Takeshi (Yokohama JPX) Aono Shigeo (Seki JPX) Hosaka Akio (Yokohama JPX) Asano Masaharu (Yokosuka JPX) Ezoe Mituhiko (Yokosuka JPX), Electronic closed loop air-fuel ratio control system for use with internal combustion engine.
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Takeuchi Yuzu (Nagoya JPX) Takada Shigetaka (Ohbu JPX) Morino Toshiharu (Mie JPX), Feedback type variable venturi carburetor.
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van den Wildenberg Adrianus Martinus,NLX ITX 5673 NA, Fluid metering device.
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Rassey Louis J. (29048 Gloede Warren MI 48093), Fuel control valve.
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Meaney John D. (Hartland MI), Fuel delivery system for internal combustion engines.
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Johnson Kalin S. (Northville MI), Fuel injection apparatus and system.
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Stumpp Gerhard (Stuttgart DEX), Fuel injection pump.
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Eisele Hermann (Nellingen DT) Stumpp Gerhard (Stuttgart DT), Fuel injection system.
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Eisele Hermann (Vaihingen DT) Glockler Otto (Renningen DT) Schwammle Rudolf (Korntal DT), Fuel injection system.
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Kramer ; Manfred, Fuel injection system.
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Maisch Wolfgang (Schwieberdingen DEX) Nusser Hermann (Markgrningen DEX) Peters Klaus-Jrgen (Affalterbach DEX) Strohl Willi (Schwieberdingen DEX), Fuel injection system.
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Maisch, Wolfgang, Fuel injection system.
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Fraenkle, Gerhard; Schwarz, Volker, Fuel injection system for an internal combustion engine.
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Linder Ernst (Muehlacker DEX) Rembold Helmut (Stuttgart DEX), Fuel injection system for internal combustion engines.
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Wakeman Russell J. (Novi MI), Fuel metering apparatus with multi-stage fuel metering valve assembly.
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Stumpp Gerhard (Stuttgart DT), Fuel-air mixture controller for internal combustion engines.
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Rabus Friedrich (Schwieberdingen DEX) Schweizer Hartmut (Korntal-Muchingen DEX), Method and apparatus for correcting sensor output signal.
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Gmelin Karl (Flein DEX), Pressure regulating valve.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Electronically controlled lean out device for mechanical fuel injected engines 원문보기

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Electronically controlled lean out device for mechanical fuel injected engines 원문보기

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연구과제 타임라인

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이 특허에 인용된 특허 (35)

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