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1. WO2020117659 - MANAGING ENGINE FIRING FRACTION CHANGES DURING GEAR SHIFTS

Publication Number WO/2020/117659
Publication Date 11.06.2020
International Application No. PCT/US2019/063974
International Filing Date 02.12.2019
IPC
F02D 41/40 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
30Controlling fuel injection
38of the high pressure type
40with means for controlling injection timing or duration
F02D 41/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
02Circuit arrangements for generating control signals
F02D 41/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
B60K 17/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
KARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
17Arrangement or mounting of transmissions in vehicles
04characterised by arrangement, location, or kind of gearing
06of change-speed gearing
CPC
B60W 10/06
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
10Conjoint control of vehicle sub-units of different type or different function
04including control of propulsion units
06including control of combustion engines
F02D 13/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
13Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
02during engine operation
06Cutting-out cylinders
F02D 17/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
17Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
02Cutting-out
F02D 2250/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
2250Engine control related to specific problems or objectives
18Control of the engine output torque
F02D 41/0087
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
008Controlling each cylinder individually
0087Selective cylinder activation, i.e. partial cylinder operation
F02D 41/0225
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
02Circuit arrangements for generating control signals
021Introducing corrections for particular conditions exterior to the engine
0215in relation with elements of the transmission
0225in relation with the gear ratio or shift lever position
Applicants
  • TULA TECHNOLOGY, INC. [US]/[US]
Inventors
  • CAI, Xiaoping
  • SERRANO, Louis J.
  • PHILLIPS, Andrew W.
Agents
  • ROSE, James
Priority Data
16/210,71005.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MANAGING ENGINE FIRING FRACTION CHANGES DURING GEAR SHIFTS
(FR) GESTION DES CHANGEMENTS DE FRACTION D'ALLUMAGE DU MOTEUR PENDANT DES CHANGEMENTS DE RAPPORT
Abstract
(EN)
Methods and controllers for coordinating firing fraction transitions that occur in conjunction with transmission shifts are described. In some embodiments, when a transmission shift to a target gear is expected, a target firing fraction is determined that is desired for use after the shift has completed. In selected circumstances, the change to the target firing fraction is initiated prior to the shift to the target gear. The transition to the target firing fraction preferably completes before an inertia/speed phase of the shift. In other embodiments, the engine transitions to all cylinder operation or other suitable transitional firing fraction in response to an expected transmission shift. After the shift completes, a transition is made to a target firing fraction. The described approaches are well suited for use during skip fire or other cylinder output level modulation operation of the engine and are particularly beneficial during up-shifts.
(FR)
L'invention concerne des procédés et des contrôleurs pour coordonner les transitions de fraction d'allumage qui se produisent conjointement avec des changements de rapport de transmission. Dans certains modes de réalisation, lorsqu'un changement de rapport de transmission vers un rapport cible est attendu, une fraction d'allumage cible, dont l'utilisation est souhaitée après avoir terminé le changement de rapport, est déterminée. Dans des circonstances choisies, le changement de la fraction d'allumage cible est initié avant le changement vers le rapport cible. La transition vers la fraction d'allumage cible se termine de préférence avant une phase d'inertie/vitesse du changement de rapport. Dans d'autres modes de réalisation, le moteur passe à un fonctionnement de tous les cylindres ou à une autre fraction d'allumage transitoire appropriée en réponse à un changement de rapport de transmission attendu. Après avoir terminé le changement de rapport, une transition est effectuée vers une fraction d'allumage cible. Les approches décrites conviennent très bien à une utilisation lors d'un fonctionnement avec saut d'allumage ou une autre modulation du niveau de sortie de cylindre du moteur et sont particulièrement avantageuses pendant les changements vers les rapports supérieurs.
Also published as
Latest bibliographic data on file with the International Bureau