[특허]Lean-burn pre-combustion chamber

Lean-burn pre-combustion chamber 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02B-019/00 F02B-019/08 F02B-019/12 F02B-019/18 F02B-043/10
출원번호	US-0422751 (2017-02-02)
등록번호	US-10208651 (2019-02-19)
발명자 / 주소	Tozzi, Luigi P. Sotiropoulou, Maria-Emmanuella Beshouri, Greg Lepley, David Thomas
출원인 / 주소	Prometheus Applied Technologies, LLC
대리인 / 주소	Barcelo, Harrison & Walker LLP
인용정보	피인용 횟수 : 0 인용 특허 : 46

초록 ▼

In certain embodiments, a unique method and pre-combustion chamber (PCC) structure may ensure very efficient flame propagation of lean fuel-air mixture in natural gas engines by reducing the amount of fuel admitted to the PCC. A PCC may include an enclosed volume of 1-3% of the main combustion chamber volume, with a spark plug and a fuel passage located opposite one or more PCC discharge nozzles to create a relatively richer fuel-air mixture with relatively lower turbulence in the spark plug region and a relatively leaner fuel-air mixture with relatively high turbulence in the nozzle region, which can be reliably and efficiently ignited, resulting in a high velocity flame jet/torch emerging from the prechamber into the main chamber. The PCC may be threaded with a 22 mm×1.5 or ⅞″-18 thread size, to allow the PCC to be screwed into a cylinder head in place of a spark plug.

대표청구항 ▼

1. A lean burn pre-combustion chamber comprising: an external surface and an internal surface enclosing a prechamber volume;one or more nozzles communicating between the external surface and the internal surface wherein each of the one or more nozzles comprises a nozzle offset between 1 mm and 10 mm;an induction zone comprising an induction diameter and an induction length between 3 and 9 times the induction diameter and wherein the nozzle offset and the induction diameter are configured to generate a compound vortex flow pattern in the prechamber volume;a transition zone comprising a throat and a transition length between 0.25 and 1.75 times the induction length;a stabilization zone comprising a stabilization length between 0.25 and 2.5 times the induction length; anda fuel admission valve configured to introduce fuel into the compound vortex flow pattern and to generate a uniform fuel air mixture distribution with lambda between 1.2 and 2.0 by controlling the admitted amount of fuel. 2. The lean burn pre-combustion chamber of claim 1, further comprising a combustion ionization sensor proximate the core of the compound vortex flow. 3. The lean burn pre-combustion chamber of claim 1, further comprising: a spark-gap electrode assembly, comprising: a primary electrode disposed within the prechamber volume; andone or more ground electrodes disposed within the prechamber volume and offset from the primary electrode to form one or more electrode gaps; andan attachment mechanism configured to removably attach the lean burn pre-combustion chamber to a cylinder head. 4. The lean burn pre-combustion chamber of claim 3, wherein the attachment mechanism comprises a plurality of external threads configured to removably engage a plurality of internal threads on the cylinder head. 5. The lean burn pre-combustion chamber of claim 3, wherein the attachment mechanism comprises a clamp for clamping the lean burn pre-combustion chamber to the cylinder head. 6. The lean burn pre-combustion chamber of claim 3, wherein the plurality of external threads comprises a 22 mm×1.5 or ⅞″-18 thread size to permit the pre-combustion chamber to be screwed into the cylinder head in place of a spark plug. 7. A method of lean-burn combustion comprising: providing a pre-chamber comprising: an external surface and an internal surface enclosing a prechamber volume;one or more nozzles communicating between the external surface and the internal surface wherein each of the one or more nozzles comprises a nozzle offset between 1 mm and 10 mm;an induction zone comprising an induction diameter and an induction length between 3 and 9 times the induction diameter;a transition zone comprising a throat and a transition length between 0.25 and 1.75 times the induction length;a stabilization zone comprising a stabilization length between 0.25 and 2.5 times the induction length; anda spark-gap electrode assembly, comprising: a primary electrode disposed within the prechamber volume; andone or more ground electrodes disposed within the prechamber volume and offset from the primary electrode to form one or more electrode gaps; anda fuel admission valve;generating a compound vortex flow pattern in the prechamber volume having a primary vorticity in a plane orthogonal to an axial direction and a second toroidal vorticity forming a vortex ring pattern around the axial direction;introducing at least one fuel in-filling stream into the compound vortex flow pattern through the fuel admission valve to generate a uniform fuel air mixture distribution with lambda between 1.2 and 2.0; andintroducing a spark across at least one of the one or more electrode gaps to ignite the fuel-air mixture. 8. The method of claim 7, wherein the vortex ring comprises peripheral velocities lower than inner velocities causing a flame to be drawn into the vortex ring, to become energized and to develop at accelerated rates. 9. The method of claim 7, further comprising rapidly vaporizing and mixing with surrounding fuel any droplet of lube oil that becomes drawn into the compound vorticity pattern mixture to prevent the autoignition of the droplet of lube oil. 10. The method of claim 7, wherein the compound vorticity pattern comprises a substantially uniformly distributed fuel-air mixture with a relatively leaner lambda in the induction zone and a relatively richer lambda in the stabilization zone. 11. The method of claim 7, wherein the pre-combustion chamber further comprises a combustion ionization sensor proximate the core of the compound vortex flow. 12. The method of claim 7, further comprising progressively growing a flame from a rich lambda region to a lean lambda region in the radial and axial directions to achieve nearly complete burning of the fuel-air mixture in the pre-combustion chamber prior to a plurality of flame jets exiting the pre-combustion chamber. 13. The method of claim 7, further comprising removably attaching the pre-chamber to a cylinder head.

이 특허에 인용된 특허 (46)

Chiera, Domenico; Hampson, Gregory James, Cap shielded ignition system.
상세보기
Black Art ; Riggs Tom, Check valve for the pre-combustion chamber of an internal combustion engine.
상세보기
Wesley William M. (Kildeer IL), Compression rate analyzer.
상세보기
Chiera, Domenico; Hampson, Gregory James, Controlled spark ignited flame kernel flow.
상세보기
Chiera, Domenico; Petruska, David C.; Hampson, Gregory James, Controlled spark ignited flame kernel flow in fuel-fed prechambers.
상세보기
Blackburn Donald (Roane County TN), Device for improving the ignition of fuel-air mixtures in internal combustion engines.
상세보기
Blackburn Donald (Roane County TN), Device for improving the ignition of fuel-air mixtures in internal combustion engines.
상세보기
Oprea, Radu; Rakosi, Edward, Direct fuel injection and ignition system for internal combustion engines.
상세보기
Jones Charles M. (Detroit MI) Wu Hai (Northville MI), Exhaust heat conservation.
상세보기
Srinivasan Anand ; Willi Martin L. ; Hiltner Joel D. ; Wu Min, Fuel combustion assembly for an internal combustion engine having an encapsulated spark plug for igniting lean gaseous f.
상세보기
Ishida, Michiyasu; Maehata, Kimihiko, Gas engine.
상세보기
Hampson, Gregory James; Chiera, Domenico, Gaseous fuel combustion.
상세보기
Crane Michael E. (San Antonio TX), Ignition system for water-cooled gas engines.
상세보기
Merritt Dan (139 Baginton Road Coventry GB2), Internal combustion engine.
상세보기
Konishi Masami (Toyota JPX) Nakamura Norihiko (Mishima JPX) Sanda Shogo (Okazaki JPX), Internal combustion engine with a secondary combustion chamber.
상세보기
Noguchi Masaaki (Nagoya JPX) Sanda Shougo (Numazu JPX) Takizawa Masaaki (Mishima JPX), Internal combustion engine with a subsidiary combustion chamber.
상세보기
Shiraishi,Taisuke; Kakuho,Akihiko; Takahashi,Eiji; Nagamine,Morihiro, Internal combustion engine with auxiliary combustion chamber.
상세보기
Teraji,Atsushi; Arai,Kaori; Takahashi,Eiji; Nodai,Toru, Internal combustion engine with auxiliary combustion chamber.
상세보기
Wyczalek Floyd A. (Birmingham MI) Maksymiuk ; Jr. Stanley (Utica MI) Harned John L. (Grosse Pointe Woods MI) Blevins Jerry R. (Knoxville TN), Jet ignition engine with prechamber fuel injection.
상세보기
Blackburn Donald E. (1073 W. Outer Dr. Oak Ridge TN 37830), Method and apparatus for accomplishing flame ignition for an internal combustion engine.
상세보기
Tozzi, Luigi P; Sotiropoulou, Maria-Emmanuella, Method and apparatus for achieving high power flame jets while reducing quenching and autoignition in prechamber spark plugs for gas engines.
상세보기
Latsch Reinhard (Vaihingen DEX), Method and apparatus for closed-loop ignition time control.
상세보기
Bullis Robert H. (Avon CT) DiDomenico Robert A. (Ludlow MA) Kimberley John A. (East Granby CT) McHugh Thomas M. (Manchester CT) Parent Christopher A. (West Springfield MA) Voss James R. (Wilbraham MA, Method and apparatus for controlling fuel injection timing in a compression ignition engine.
상세보기
Latsch Reinhard (Vahingen DEX) Schlembach Hans (Mhlacker DEX) Scherenberg Dieter (Stuttgart DEX), Method for igniting lean fuel-air mixtures and an apparatus to perform the method.
상세보기
Bailey,Brett; Fiveland,Scott; Gong,Weidong, Method to extend lean ignition limit within internal combustion engine.
상세보기
Genslak ; Stanley L., Mixed cycle stratified charge engine with ignition antechamber.
상세보기
Chiera, Domenico; Hampson, Gregory James; Polley, Nolan, Multi-chamber igniter.
상세보기
Lindsay Maurice E. (114 Standard St. El Segundo CA 90245), Performing spark plug.
상세보기
Tozzi Luigi (4566 Springbrook Dr. Columbus IN 47203), Plasma jet ignition apparatus.
상세보기
Tozzi, Luigi P.; Salter, Douglas W., Pre-chamber spark plug.
상세보기
Hampson, Gregory James; Chiera, Domenico, Pre-chamber spark plug with tubular electrode and method of manufacturing same.
상세보기
Manolis John (P.O. Box 380 New York NY 10028), Pre-combustion chamber for internal combustion engine.
상세보기
LaPointe, Leon A.; Sanger, Chris L.; Zigan, James A.; Mohr, Daniel J.; Tikk, Laszlo D., Pre-combustion device for an internal combustion engine.
상세보기
Miyakawa Yasuhiro (Nagoya JPX) Machida Minoru (Nagoya JPX), Precombustion chamber construction for an internal combustion engine.
상세보기
Kuhnert Dieter (Friedrich-Metz-Strasse 18 74889 Sinsheim DEX) Latsch Reinhard (Sunnisheimring 43 74889 Sinsheim DEX), Precombustion chamber device.
상세보기
Ward Michael A. V. (20 Marrett Rd. Lexington MA 02173), Reverse stratified, ignition controlled, emissions best timing lean burn engine.
상세보기
Benedikt Walter (Stuttgart DEX) Latsch Reinhard (Vaihingen DEX) Schlembach Hans (Mhlacker DEX), Separately ignited internal combustion engine with at least one main combustion chamber and an ignition chamber.
상세보기
Tozzi Luigi P. (Columbus IN), Spark plug including magnetic field producing means for generating a variable length arc.
상세보기
Tozzi Luigi P. (Columbus IN), Spark plug including magnetic field producing means for generating a variable length arc.
상세보기
Dietrich Rainer (Celle DEX), Swirl chamber and spark plug assembly.
상세보기
Tozzi Luigi P. ; Goldschmidt Stephen ; Everett David A. ; Gatewood Bryan S., System for controlling ignition energy of an internal combustion engine.
상세보기
Kuhnert Dieter (Friedrich-Metz-Str. 18 6920 Sinsheim DEX), Technique and spark plug to ignite very lean fuel air mixtures, particulary for gas engines.
상세보기
Noguchi ; Masaaki ; Sumiyoshi ; Masaharu ; Tanaka ; Yukiyasu ; Tanaka ; Taro, Torch ignition type internal combustion engine.
상세보기
Tourteaux,Nicolas; Robinet,Cyril, Turbocharging and precombustion chamber spark plug internal combustion engine, ignition method and application.
상세보기
Attard, William, Turbulent jet ignition pre-chamber combustion system for spark ignition engines.
상세보기
Riley, Michael B.; Hampson, Gregory James; Chiera, Domenico, Use of prechambers with dual fuel source engines.
상세보기

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

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Lean-burn pre-combustion chamber 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허에 인용된 특허 (46)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트

연합인증

Lean-burn pre-combustion chamber 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

전체(0) 논문(0) 특허(0) 보고서(0)

이 특허에 인용된 특허 (46)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트