Multi-cylinder diesel engine with variable valve actuation
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01L-001/34
출원번호
US-0355524
(1999-10-08)
우선권정보
IT0000078 (1997-02-04)
국제출원번호
PCT/EP98/00437
(1998-01-27)
§371/§102 date
19991008
(19991008)
국제공개번호
WO-9834014
(1998-08-06)
발명자
/ 주소
Macor Lorentino,ITX
Pecori Andrea,ITX
출원인 / 주소
C.R.F. Societa Consortile per Azioni, ITX
대리인 / 주소
Sughrue, Mion, Zinn, Macpeak & Seas, PLLC
인용정보
피인용 횟수 :
71인용 특허 :
13
초록▼
A multi-cylinder Diesel engine, for trucks, particularly of the type supercharged by a turbo-supercharger actuated by the exhaust gases, is provided with a variable valve actuation system for actuating the intake and exhaust valves, which, in combination with a specific geometry of the cams driving
A multi-cylinder Diesel engine, for trucks, particularly of the type supercharged by a turbo-supercharger actuated by the exhaust gases, is provided with a variable valve actuation system for actuating the intake and exhaust valves, which, in combination with a specific geometry of the cams driving the valves, provides the possibility of a plurality of different modes of operation of the engine which can be selected according to the conditions of operation of the engine and including, in addition to the regular mode of operation, at least one mode of operation of the engine as a brake.
대표청구항▼
[ What is claimed is:] [1.]1. Multi-cylinder diesel engine, comprising:at least one intake vale (11) and at least one exhaust valve (E) for each cylinder, each provided with respective return spring means (4) biasing the valve towards the closed position, for controlling respective intake and exhaus
[ What is claimed is:] [1.]1. Multi-cylinder diesel engine, comprising:at least one intake vale (11) and at least one exhaust valve (E) for each cylinder, each provided with respective return spring means (4) biasing the valve towards the closed position, for controlling respective intake and exhaust conduits,a cam shaft (10) for actuating the intake and exhaust valves (I, E) of the engine cylinders by means of respective tappets (7), each intake valve and each exhaust valve being driven by a cam (C.sub.I, C.sub.E) of said cam shaft (10),wherein each of said tappets (7) drives the respective intake or exhaust valve (I, E) against the action of said return spring means (4) through the interposition of hydraulic means including a chamber of fluid under pressure (6),the chamber of fluid under pressure (6) associated with each intake valve (I) and each exhaust valve (E) being adapted to be connected through a solenoid valve (15) to an outlet channel (12), in order to uncouple the valve from the respective tappet (7) and to cause the valve to close rapidly under the action of the respective return spring means (4),electronic control means for controlling each solenoid valve (15) for varying the opening time and stroke of the respective intake or exhaust vale (I, E) as a function of one or more parameters of operation of the engine,wherein each cam of the engine cam shaft (10) has a profile such as to tend to cause the respective intake or exhaust valve (I. E) controlled thereby to open not only during the conventional opening stage within the regular cycle of operation of the engine, but also at some additional stages of the cycle,wherein said electronic control means are adapted to cause each solenoid valve (15) to open so as to keep the respective intake or exhaust valve (I, E) closed during the above-mentioned conventional stage and/or during one or more of said additional stages at which the respective cam would tend to cause opening of the valve, so that the engine can be operated selectively according to different modes of operation by controlling said solenoid valves (15), andwherein said electronic means are adapted to provide a mode of operation of the engine as a brake, wherein no fuel is injected into the cylinders and wherein each solenoid valve (15) in controlled so as to keep the intake and exhaust valves (I, E) of each cylinder closed substantially during each upstroke of the respective piston from the bottom dead center to the top dead center, so as to exploit the power absorbed at each piston upstroke in order to obtain a braking effect, said electronic means being also adapted to allow each exhaust valve to open, by closing the respective solenoid valve (15) immediately before the piston reaches the top dead center, due to the action of the respective cam (C.sub.E).
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (13)
Shirey Benjamin G. (Farmington Hills MI) Molitor Mark R. (Muskegon MI), Engine valve timing control system and method.
Weber,James R.; Leman,Scott A.; Coleman,Gerald N.; Duffy,Kevin P.; Fluga,Eric C.; Kilkenny,Jonathan P.; Afjeh,Homa, Air and fuel supply system for a combustion engine.
Coleman, Gerald N.; Duffy, Kevin P.; Faulkner, Stephen A.; Fluga, Eric C.; Kilkenny, Jonathan P.; Leman, Scott A.; Opris, Cornelius N.; Verkiel, Maarten; Weber, James R., Air and fuel supply system for combustion engine.
Coleman,Gerald N.; Duffy,Kevin P.; Faulkner,Stephen A.; Fluga,Eric C.; Kilkenny,Jonathan P.; Leman,Scott A.; Opris,Cornelius N.; Verkiel,Maarten; Weber,James R., Air and fuel supply system for combustion engine.
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.
Auffret, Nicolas; Dronniou, Nicolas, Control method for the intake and exhaust valves of an engine and internal combustion engine comprising such valves.
Bloms,Jason Kenneth; Faletti,James J.; Leman,Scott Alan; Pierpont,David Andrew; Weber,James Richard, Control system and method for variable valve actuation system.
Gentile, Luca; Vattaneo, Francesco, Diesel engine having cams for controlling the intake valves, which have a main lobe and an additional lobe radiused to each other.
Saretto,Roberto; Vafidis,Costantinos; Vattaneo,Francesco, Internal combustion engine with a single camshaft which controls exhaust valves mechanically and intake valves through an electronically controlled hydraulic device.
Maira, Massimiliano; Richard, Francesco, Internal combustion engine with means for uniforming the amount of intake air in different cylinders, and method therefor.
Vattaneo,Francesco; Micelli,Damiano; Vafidis,Costantinos; Saretto,Roberto, Internal combustion engine with valves with variable actuation which are driven by a single pumping piston and controlled by a single solenoid valve for each engine cylinder.
Borean, Fabio; Puccio, Mitzi, Internal-combustion engine with an electronically controlled hydraulic system for actuation of the valves and means for compensating changes in the operating conditions of the hydraulic.
Holtman, Richard Herman; Leman, Scott Alan; Cornell, Sean O.; Pipis, Jr., John Stephen; Shinogle, Ronald D., System and method for calibrating variable actuation system.
Bloms, Jason Kenneth; Faletti, James J.; Leman, Scott Alan; Pierpont, David Andrew; Weber, James Richard, System and method for controlling engine operation.
Lucatello,Marco, System and method for controlling load and combustion in an internal-combustion engine by valve actuation according to a multiple lift (multilift) cycle.
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.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.