[특허]Multi-level skip fire

Multi-level skip fire 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02D-013/06 F02D-041/00 F01L-001/047 F02D-013/02 F02D-017/02 F02D-011/02 F02D-041/26 F02P-005/15 F02D-041/12
출원번호	US-0485000 (2017-04-11)
등록번호	US-10072592 (2018-09-11)
발명자 / 주소	Younkins, Matthew A. Serrano, Louis J.
출원인 / 주소	Tula Technology, Inc.
대리인 / 주소	Beyer Law Group LLP
인용정보	피인용 횟수 : 0 인용 특허 : 75

초록 ▼

In one aspect, a method for controlling operation of an internal combustion engine is described. The engine is operated in a skip fire manner such that selected skipped working cycles are skipped and selected active working cycles are fired to deliver a desired engine output. A particular level of torque output is selected for each of the fired working chambers. Various methods, arrangements and systems related to the above method are also described.

대표청구항 ▼

1. A method of controlling the operation of an internal combustion engine having a plurality of working chambers to deliver a desired output, wherein each working chamber has at least one intake valve and at least one exhaust valve, the method comprising: operating the engine in a dynamic firing level modulation mode that causes selected low working cycles to be fired at a low torque output and selected high working cycles to be fired at a high torque output, wherein decisions whether to fire each working cycle at a high or low torque output are dynamically determined during operation of the engine on an individual firing opportunity by firing opportunity basis; andadjusting an air charge for each fired working cycle based on whether the high or low torque output was selected for such fired working cycle. 2. A method as recited in claim 1 wherein the low torque output working cycles involve the use of an Early Intake Valve Closure (EIVC) cycle relative to the high torque output working cycles. 3. A method as recited in claim 1 wherein the low torque output working cycles involve the use of a Late Intake Valve Closure (LIVC) cycle relative to the high torque output working cycles. 4. A method as recited in claim 1 further comprising: determining a desired effective firing fraction indicative of a fraction of the firing opportunities that would need to be fired at a reference output level to deliver the desired output; anddetermining which working cycles are to be fired at a high output and which working cycles are to be fired at a low output based at least in part on the effective firing fraction. 5. A method as recited in claim 4 wherein: the effective firing fraction is determined by a firing fraction calculator; andthe determination of which working cycles are to be fired at a high output and which working cycles are to be fired at a low output are made by a firing level determining module. 6. A method a recited in claim 5, wherein the firing level determining module utilizes a sigma delta converter in the determination of which working cycles are to be fired at a high output and which working cycles are to be fired at a low output. 7. A method as recited in claim 5 wherein the firing level determining module utilizes a lookup table in the determination of which working cycles are to be fired at a high output and which working cycles are to be fired at a low output. 8. A method as recited in claim 1 wherein the selection of the high or low torque output on each working cycle is determined at least in part using a sigma delta converter. 9. A method a recited in claim 8, wherein the sigma delta converter is implemented using at least one of: analog components;digital components; andprogrammable logic. 10. A method a recited in claim 8, wherein the sigma delta converter is implemented using programmed instructions executed on a processor. 11. A method as recited in claim 1 wherein the selection of the high or low torque output is based at least in part on a state machine. 12. A method as recited in claim 1 wherein during each low torque working cycle the corresponding working chamber is not deactivated, fuel is delivered to the corresponding working chamber, combustion occurs in the corresponding working chamber and a positive net torque is delivered by the low torque working cycle. 13. A method as recited in claim 1 wherein each of the working chambers has at least two associated intake valves, and the air charge for each working cycle is adjusted to generate high or low torque output by independently controlling the at least two intake valves in the working chamber associated with such working cycle. 14. A method as recited in claim 13 wherein all of the valves are actuated by one or more cam lobes coupled with one or more camshafts. 15. A method as recited in claim 1 wherein each of the working chambers includes a first intake valve and a second intake valve, the method further comprising: while operating the engine in dynamic firing level modulation mode, during a selected working cycle, opening and closing the first and second intake valves based on different timing cycles. 16. A method as recited in claim 15 wherein: the first intake valve is operated based on one of an Early Intake Valve Closure (EIVC) cycle and a Late Intake Valve Closure (LIVC); andthe second intake valve is operated based on an Otto cycle. 17. A method as recited in claim 1 wherein: each working chamber includes a first intake valve and a second intake valve;when a working cycle is fired at a high torque output, the first and second intake valves of the associated working chamber are independently controlled based on a high torque valve control scheme; andwhen a working cycle is fired at a low torque output, the first and second intake valves of the fired working chamber are independently controlled based on a low torque valve control scheme, which is different from the high torque valve control scheme. 18. A method as recited in claim 17 wherein: the high torque valve control scheme involves delivering air through the first and second intake valves during a selected working cycle; andthe low torque valve control scheme involves not allowing air through the first intake valve during a selected working cycle. 19. A method as recited in claim 17 wherein: the high torque valve control scheme involves delivering air through the first intake valve and not the second intake valve during a selected working cycle;the high torque valve control scheme further involves operating the first intake valve based on an Otto cycle during the selected working cycle;the low torque valve control scheme involves delivering air through the first and the second intake valves during a selected working cycle; andthe low torque valve control scheme further involves operating the first intake valve based on an Otto cycle during the selected working cycle and operating the second intake valve based on a Late Intake Valve Closure (LIVC) cycle during the selected working cycle. 20. A method as recited in claim 17 wherein: the high torque valve control scheme involves delivering air through the first intake valve and not the second intake valve during a selected working cycle;the high torque valve control scheme further involves operating the first intake valve based on an Otto cycle during the selected working cycle;the low torque valve control scheme involves delivering air through the first and the second intake valves during a selected working cycle; andthe low torque valve control scheme further involves operating the first intake valve based on an Otto cycle during the selected working cycle and operating the second intake valve based on an Early Intake Valve Closure (EIVC) cycle during the selected working cycle. 21. A method of controlling the operation of an internal combustion engine having a plurality of working chambers to deliver a desired output, wherein each working chamber has at least one intake valve and at least one exhaust valve, the method comprising: operating the engine in a dynamic firing level modulation mode that causes selected low working cycles to be fired at a low torque output and selected high working cycles to be fired at a high torque output, wherein decisions whether to fire each working cycle at a high or low torque output are dynamically determined during operation of the engine on a firing opportunity by firing opportunity basis; andadjusting an air charge for each fired working cycle based on whether the high or low torque output was selected for such fired working cycle, andwherein working cycles fired at the low torque output are firing in a condition that substantially provides a minimum brake specific fuel consumption for such working cycles. 22. A firing controller for use in controlling the operation of an internal combustion engine having a plurality of working chambers to deliver a desired output, wherein each working chamber has at least one intake valve and at least one exhaust valve, the firing controller comprising: a firing level determining unit that identifies selected low working cycles to be fired at a low torque output and selected high working cycles to be fired at a high torque output, the firing level determining unit being arranged to individually make the high or low torque output determinations on an individual firing opportunity by firing opportunity basis during operation of the engine; anda firing control unit arranged to direct operation of the intake valves in a manner that provides a lower air charge for low torque output working cycles than is provided for high air charge working cycles. 23. A firing controller as recited in claim 22 wherein the firing control unit is arranged to direct the low torque output working cycles to use an Early Intake Valve Closure (EIVC) cycle relative to the high torque output working cycles. 24. A firing controller as recited in claim 22 wherein the firing control unit is arranged to direct the low torque output working cycles to use a Late Intake Valve Closure (LIVC) cycle relative to the high torque output working cycles. 25. A firing controller as recited in claim 22 further comprising: a firing fraction calculator arranged to determine a desired effective firing fraction indicative of a fraction of the firing opportunities that would need to be fired at a reference output level to deliver the desired output; andwherein the firing level determining unit determines which working cycles are to be fired at a high output and which working cycles are to be fired at a low output based at least in part on the effective firing fraction. 26. A firing controller as recited in claim 22 wherein each of the working chambers has at least two associated intake valves, and the firing control unit adjusts the air charge for each working cycle to generate high or low torque output by independently controlling the at least two intake valves in the working chamber associated with such working cycle. 27. A firing controller as recited in claim 26 wherein each of the working chambers has at least two associated exhaust valves. 28. A firing controller as recited in claim 22, wherein the firing level determining module utilizes a sigma delta converter in the determination of which working cycles are to be fired at a high output and which working cycles are to be fired at a low output. 29. A firing controller as recited in claim 28, wherein the sigma delta converter is implemented using at least one of: analog components;digital components;programmable logic; andprogrammed instructions executed on a processor. 30. A firing controller as recited in claim 22 wherein the firing controller is further configured to cause during each low torque working cycle: fuel to be delivered to the corresponding working chamber; andcombustion to occur in the corresponding working chamber such that a positive net torque is delivered by the low torque working cycle whereby the corresponding working cycle is not deactivated during the low torque working cycle.

이 특허에 인용된 특허 (75)

Sellnau, Mark C.; Sinnamon, James F., Apparatus and method for early intake valve closing.
상세보기
Clark, Roger A., Atkinson cycle powertrain.
상세보기
Yasui,Yuji; Sato,Masahiro, Control apparatus for controlling a plant by using a delta-sigma modulation.
상세보기
Kobayashi Nobuyuk (Toyota JPX) Hattori Takashi (Toyota JPX) Ito Toshimitsu (Toyota JPX), Control device of an internal combustion engine.
상세보기
Serrano, Louis J., Control of a partial cylinder deactivation engine.
상세보기
Morikawa Koji,JPX, Control system for two cycle direct injection engine and the method thereof.
상세보기
Nakamura,Makoto, Cylinder cutoff control apparatus of internal combustion engine.
상세보기
Megli,Thomas W.; Trask,Nate, Cylinder deactivation method to minimize drivetrain torsional disturbances.
상세보기
Han, Dong Hee; Kim, Woo Tae; Suh, In Gee; Kim, Hyung Ick; Kim, Back Sik; Kim, Dae Sung, Cylinder deactivation system for vehicle and variable valve lift system using the same.
상세보기
Surnilla,Gopichandra; Berger,Al Henry; Chen,Wan Joe; House,Christopher, Differential torque operation for internal combustion engine.
상세보기
Albertson, William C.; Stabinsky, Mark, Dual active fuel management sequencing.
상세보기
Roe, Richard B.; Lee, Jongmin, Dual intake valve system with one deactivation valve and one multi-lift valve for swirl enhancement.
상세보기
Doering,Jeff; Surnilla,Gopichandra, Engine control with variable control valve.
상세보기
Clarke John M. (Chillicothe IL) Faletti James J. (Spring Valley IL), Engine operation using fully flexible valve and injection events.
상세보기
Doering,Jeff, Engine system and method accounting for engine misfire.
상세보기
Toukura Nobusuke (Yokohama JPX), Engine torque controller.
상세보기
Ono, Takahiro; Kojima, Kazuo, Exhaust gas purification device of internal combustion engine.
상세보기
Pirjaberi, Mohammad R.; Tripathi, Adya S.; Serrano, Louis J., Firing fraction management in skip fire engine control.
상세보기
McConville, Gregory Patrick; Ku, Kim Hwe, Head packaging for cylinder deactivation.
상세보기
Charles Mendler, High efficiency vehicle and engine.
상세보기
Yuille, Ronald D.; Shost, Mark A.; Serrano, Louis J.; Parsels, John W.; Younkins, Matthew A., Hybrid vehicle with cylinder deactivation.
상세보기
Daly Paul D. (Troy MI) Verner Douglas R. (Sterling Heights MI) Brooks Mark A. (Sterling Heights MI) Fallis Robert E. (Milford MI), Idle and off-idle operation of a two-stroke fuel-injected multi-cylinder internal combustion engine.
상세보기
Rozario,Frederick J.; Mc Donald,Mike M.; Albertson,William C.; Wu,Ko Jen, Impulse charging control to extend displacement on demand range.
상세보기
Whitney, Christopher E.; Baur, Andrew W.; Spitza, Jr., Alfred E.; Li, Zhong; Kaiser, Jeffrey M., Increased fuel economy mode control systems and methods.
상세보기
Tripathi, Adya S.; Silvestri, Chester J., Internal combustion engine control for improved fuel efficiency.
상세보기
Tripathi, Adya S.; Silvestri, Chester J., Internal combustion engine control for improved fuel efficiency.
상세보기
Tripathi, Adya S.; Silvestri, Chester J., Internal combustion engine control for improved fuel efficiency.
상세보기
Tripathi, Adya S.; Silvestri, Chester J., Internal combustion engine control for improved fuel efficiency.
상세보기
Tripathi, Adya S.; Silvestri, Chester J., Internal combustion engine control for improved fuel efficiency.
상세보기
Tripathi, Adya S.; Silvestri, Chester J., Internal combustion engine control for improved fuel efficiency.
상세보기
Tripathi, Adya S.; Silvestri, Chester J., Internal combustion engine control for improved fuel efficiency.
상세보기
Tripathi, Adya S.; Silvestri, Chester J.; Chandler, Christopher W.; Hand, Christopher C.; Switkes, Joshua P.; Wilcutts, Mark A.; Younkins, Matthew A., Internal combustion engine control for improved fuel efficiency.
상세보기
Cleary, David J.; Najt, Paul M.; Marriott, Craig D.; Chang, Junseok, Method and apparatus for continuously variable differential phasing of engine valve operation.
상세보기
Bradshaw Benjamin J. (Solihull GB2) Bridgens Barry J. (Quarry Bank GB2) Howes Michael J. (Solihull GB2), Method and apparatus for controlling engine torque and wheel spin.
상세보기
Jehle,Martin; Schneider,Dirk, Method and device for controlling an internal combustion engine.
상세보기
Cleary, David J.; Najt, Paul M., Method and device for improving charged engines.
상세보기
Kohama Tokio (Nishio JPX) Huzino Seizi (Okazaki JPX) Obayashi Hideki (Okazaki JPX) Kawai Hisasi (Toyohashi JPX) Egami Tsuneyuki (Aichi JPX), Method and system for output control of internal combustion engine.
상세보기
Schmitz Gunter,DEX, Method for a throttle-free load control of an internal combustion engine by means of variably controllable cylinder valv.
상세보기
Panciroli, Marco; Lambertini, Loris; Alunni, Francesco; Albertazzi, Matteo Domenico; Montaguti, Marco, Method for acquisition and processing of an intake pressure signal in an internal combustion engine without an intake manifold.
상세보기
Kolmanovsky, Ilya, Method for controlling an internal combustion engine having a variable event valvetrain.
상세보기
Bidner David K. (Livonia MI) Zimlich Glenn A. (Dearborn Heights MI) Orzel Daniel V. (Westland MI), Method for maintaining clean spark plugs in a variable displacement engine.
상세보기
Kolmanovsky,Ilya; Lewis,Donald, Method for stopping and starting an internal combustion engine having a variable event valvetrain.
상세보기
Bradley Alan Boyer ; William Francis Stockhausen, Method of supercharging an engine.
상세보기
Kolmanovsky,Ilya V.; Michelini,John O., Method of torque control for an engine with valves that may be deactivated.
상세보기
Smith, Stephen B.; Uhrich, Michael James; Kerns, James Michael; Banker, Adam Nathan, Methods and systems for variable displacement engine control.
상세보기
Saito Tetsushi,JPX ; Tsuzuku Hiroyuki,JPX ; Tsuchida Naoki,JPX, Multi valve engine with variable valve operation.
상세보기
Younkins, Matthew A.; Serrano, Louis J., Multi-level skip fire.
상세보기
Younkins, Matthew A.; Serrano, Louis J., Multi-level skip fire.
상세보기
Younkins, Matthew A.; Serrano, Louis J., Multi-level skip fire.
상세보기
Jyoutaki Hiroshi,JPX ; Mori Kazutoshi,JPX ; Kohketsu Susumu,JPX ; Daigo Yasunori,JPX ; Yamaki Yoshihisa,NLX, Multiple step valve opening control system.
상세보기
Ogiso,Makoto, Output control system for internal combustion engine.
상세보기
Kohama Tokio (Nishio JPX) Huzino Seizi (Okazaki JPX) Obayashi Hideki (Okazaki JPX) Kawai Hisasi (Toyohashi JPX) Egami Tsuneyuki (Aichi JPX), Output control system for multicylinder internal combustion engine.
상세보기
Frster Hans-Joachim (Stuttgart DEX) Lbbing Bernd-Eric (Winterbach DEX) Letsche Ulrich (Stuttgart DEX), Process and apparatus for intermittent control of a cyclically operating internal combustion engine.
상세보기
Ralston, Mark Dixon, Selective compound engine.
상세보기
Tripathi, Adya S.; Switkes, Joshua P.; Pirjaberi, Mohammad R.; Chandler, Christopher W., Skip fire engine control.
상세보기
Schechter Michael M. (Farmington Hills MI), Skip-cycle strategies for four cycle engine.
상세보기
Cinpinski, Kenneth J.; Dulzo, Joseph R., Solenoid diagnostic systems for cylinder deactivation control.
상세보기
Tatavarthi, Ramakrishna; Kosanka, Andrew J.; Li, Jinbiao, System and method for adjusting the lift state of a valve actuator and for adjusting the number of active cylinders in an engine to improve fuel economy.
상세보기
Sun, Jing; Kolmanovsky, Ilya V., System and method for estimating and controlling cylinder air charge in a direct injection internal combustion engine.
상세보기
Gibson,Alex; Michelini,John O.; McCallum,James; Kolmanovsky,Ilya V.; Song,Gang, System and method for reducing vehicle acceleration during engine transitions.
상세보기
Leone, Thomas G.; Boyer, Brad Alan; Jankovic, Mrdjan J., System and method for selective cylinder deactivation.
상세보기
Tripathi, Adya S.; Silvestri, Chester J., System and methods for improving efficiency in internal combustion engines.
상세보기
McKay, Daniel Lee; Nichols, Gary Arthur, System for controllably disabling cylinders in an internal combustion engine.
상세보기
Doering, Jeffrey Allen; Suffredini, Giuseppe D.; Halverson, Jon Walter; Linenberg, Mark Thomas; Mingo, Paul Charles; Cunningham, Ralph Wayne, System for controlling air-fuel ratio during intake control device transitions.
상세보기
Bidner,David; Surnilla,Gopichandra; Doering,Jeff, System for controlling valve timing of an engine with cylinder deactivation.
상세보기
Thomas George Leone ; Diana Dawn Brehob ; John D. Russell, Transitions among operating modes in an engine with a hybrid valvetrain.
상세보기
Allston, Brian K.; Burkhard, James F., Vacuum management system for engine with variable valve lift.
상세보기
Michelini,John O.; Lewis,Donald J., Valve control to reduce modal frequencies that may cause vibration.
상세보기
Lewis,Donald J.; Russell,John D.; Michelini,John O., Valve selection for an engine operating in a multi-stroke cylinder mode.
상세보기
Phillips James D. (Posen MI), Variable camshaft.
상세보기
Doering, Jeffrey Allen; Rollinger, John Eric, Variable displacement engine diagnostics.
상세보기
Barnes, David M., Variable valve actuation system and method using variable oscillating cam.
상세보기
Choi, Myungsik, Variable valve system.
상세보기
Atsushi Suzuki JP, Variable valve timing and lift structure for four cycle engine.
상세보기
Gibson, Alex; Trask, Nate; Reed, Dennis; Kolmanovsky, Ilya V., Vehicle braking control.
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

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