System and method for vehicle engine cranking
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0945272
(2001-08-31)
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발명자
/ 주소 |
- Marshall, Brian P.
- Rodgers, David V.
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출원인 / 주소 |
- International Truck Intellectual Property Company, LLC.
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대리인 / 주소 |
Calfa, Jeffrey P.Powell, Neil T.Sullivan, Dennis Kelly
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인용정보 |
피인용 횟수 :
9 인용 특허 :
4 |
초록
▼
A method of boot strap starting a diesel having a plurality of cylinders comprises the steps of initiating cranking the diesel and responsive to cranking forcing exhaust valves for all cylinders open during compression strokes. Thereafter, responsive to the engine rotational speed signal exceeding a
A method of boot strap starting a diesel having a plurality of cylinders comprises the steps of initiating cranking the diesel and responsive to cranking forcing exhaust valves for all cylinders open during compression strokes. Thereafter, responsive to the engine rotational speed signal exceeding a first threshold, an exhaust valve for one cylinder is allowed to open and close in synchronous with movement of a piston in the cylinder. Further responsive to engine rotational speed exceeding a second threshold higher than the first threshold, cranking is discontinued and the remaining exhaust valves are allowed to open and close in synchronous with movements of pistons in their respective cylinders.
대표청구항
▼
A method of boot strap starting a diesel having a plurality of cylinders comprises the steps of initiating cranking the diesel and responsive to cranking forcing exhaust valves for all cylinders open during compression strokes. Thereafter, responsive to the engine rotational speed signal exceeding a
A method of boot strap starting a diesel having a plurality of cylinders comprises the steps of initiating cranking the diesel and responsive to cranking forcing exhaust valves for all cylinders open during compression strokes. Thereafter, responsive to the engine rotational speed signal exceeding a first threshold, an exhaust valve for one cylinder is allowed to open and close in synchronous with movement of a piston in the cylinder. Further responsive to engine rotational speed exceeding a second threshold higher than the first threshold, cranking is discontinued and the remaining exhaust valves are allowed to open and close in synchronous with movements of pistons in their respective cylinders. ithin the tubular shell and including a pair of opposite ends, and a seal provided at each said opposite end. 5. The rotary pump according to claim 3, wherein at least one of the pump elements comprises a U-shaped shell, a spool-shaped core provided within the shell, the core including a pair of disc-shaped ends for tracking the cam surface and a shaft extending between the disc-shaped ends, and a plurality of roller elements disposed between the shell and the shaft. 6. The rotary pump according to claim 3, wherein at least one of the pump elements comprises a U-shaped shell including a pair of closed-opposite shell ends each incorporating a bearing hole therein, a plurality of roller elements disposed within the bearing holes, and a cylindrical core provided within the shell, the core including a pair of opposite core ends and a mandrel provided at each core end for rotatably securing the core to the shell. 7. A rotary pump comprising: a centre reference shaft (108); a cam ring (102) including an inner cam surface (110) with a plurality of cam lobes (R1) defined by a sector of said cam surface with a quadrant of increasing radius followed by an equal quadrant of decreasing radii, with a centre of symmetry coincident with an apex of said lobes; a rotor (104) affixed to said centre shaft disposed within said cam ring incorporating a plurality of fluid chambers (112), each said fluid chamber comprising an inner semicircular dome and an aperture opening into a circumference of said rotor; a disc (114) sealingly disposed within said aperture in contact with said cam surface such that as said rotor revolves said disc moves radially over a stroke length between a radial innermost position adjacent to said aperture dome and a second position adjacent to a radial outermost portion with said disc in contact with and centered on an apex of said lobe; an outer pump body with attached association with said cam ring and incorporating a pattern of peripheral bolt holes; and two enclosing end plates (106a and 106b) incorporating a like pattern of peripheral bolt holes and pairs of ports thereon (116a and 118a) with respective locations of said pairs radially disposed on a centre radius of respective quadrants of said plurality of cam lobes, with inner and outer edges of said ports defined by circular sectors with centres coincident with said centre reference shaft, and end radial edges thereof defined by concave radial sectors with near coincidence with an inner semicircular dome of said fluid chambers (112) so that when said rotor rotates within a bolted assembly of said components, said fluid chambers thereof, when traversed over sectors of increasing and decreasing radii of said cam lobes, inwardly disposed fluid entrapment cavities defined by said discs, said inner semicircular domes, and said side plates, cause fluid to ingress and egress through said so disposed ports, with said entrapment cavities fully isolated from said disc and cam surface contact. 8. A rotary pump according to claim 7, wherein said body with attached association, is a separate outer body (120) with free inner circular contact with a circular outer surface of said ring cam (102), said circular cam surface provided with a gear sector (124), and said inner body surface provided with an off-set non-interference cavity to accommodate relative rotation of said gear sector and ring cam; and a spindle and pinion (122) in mesh with said gear sector, is held to and extends through a said side plate providing a means to change a radial relationship between said cam lobes and said pairs of fluid ports. 9. A rotary pump according to claim 7, wherein said body with attached association is a separate outer body (620) with a plurality of circular sector cavities separated by inward radial extensions, a ring cam (602) with a plurality of circular sector cavities (638a and 638b) separated by outward radial extensions, with said ring cam and body sectors forming respe
이 특허에 인용된 특허 (4)
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Feucht Dennis D., Electronically controlled outwardly opening valve system for an engine.
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Clarke John M. (Chillicothe IL) Faletti James J. (Spring Valley IL), Engine operation using fully flexible valve and injection events.
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Mohammad Haghgooie ; Mazen Hammoud, Method and system for starting a camless internal combustion engine.
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Jones Kenneth R. (Oconomowoc WI), Reduced starting load system for an automobile engine.
이 특허를 인용한 특허 (9)
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Vanderpoel,Richard; Yang,Zhou; Brzoska,Andrew; Ruggiero,Brian L; Smith,David B; Judd,James; Fuchs,Neil E; Dailey,Michael P.; Ernest,Steven N, Compact lost motion system for variable value actuation.
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Vanderpoel, Richard E.; Schwoerer, John A.; Mossberg, Jeffrey; Huang, Shengqiang, Compact lost motion system for variable valve actuation.
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Kataoka,Kenji; Tsuji,Kimitoshi; Kusaka,Yasushi, Control apparatus for an internal combustion engine and control method thereof.
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Leman,Scott Alan; Bloms,Jason Kenneth; Funke,Steven James; Weber,James Richard, Method and apparatus for controlling engine valve timing.
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Kemmler,Roland; Leweux,Johannes; Schroeer,Dietmar, Method for making it easier to start an internal combustion engine.
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Hayman, Alan W., Methods for starting a multi-cylinder internal combustion engine.
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Riggs, Robert B.; Hardin, Christian Michael; Scott, Robert Paul, Truck vehicle.
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Vorih, Joesph M.; Mossberg, Jeffrey; Vanderpoel, Richard; Ernest, Steven; Paterson, Guy; Schwoerer, John A.; Leitkowski, Edward T.; Brzoska, Andrew; Cosma, Gheorghe, Variable lost motion valve actuator and method.
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Vorih, Joseph M.; Mossberg, Jeffrey; Vanderpoel, Richard; Ernest, Steven; Paterson, Guy; Schwoerer, John A.; Leitkowski, Edward T.; Brzoska, Andrew; Cosma, Gheorghe, Variable lost motion valve actuator and method.
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