公开(公告)号：US12123342B2

公开(公告)日：2024-10-22

申请号：US18585308

申请日：2024-02-23

申请人： Dr. Ing. h. c. F. Porsche AG ,  Technical University of Cluj-Napoca

发明人： Andre Kopp ,  Ovidiu Barac-Zbircea ,  Nicolae Vlad Burnete

IPC分类号： F02B75/02 ,  F02B29/00

CPC分类号： F02B75/02 ,  F02B29/00 ,  F02B2075/026

摘要： A method for a combustion engine has a working cycle of three revolutions of the crankshaft. The method includes: feeding a fuel mixture into a combustion chamber of a cylinder while moving a piston from a second top dead-center to a first bottom dead-center; compressing an air-fuel mixture in the combustion chamber while moving the piston from the first bottom dead-center to a first top dead-center; burning the air-fuel mixture while moving the piston from the first top dead-center to a second bottom dead-center; compressing a gas mixture in the combustion chamber while moving the piston from the second bottom dead-center to the first top dead-center; burning the gas mixture while moving the piston from the first top dead-center to the first bottom dead-center; and expelling the gas mixture from the combustion chamber while moving the piston from the first bottom dead-center to the second top dead-center.

公开(公告)号：US12103532B2

公开(公告)日：2024-10-01

申请号：US17909520

申请日：2020-03-13

申请人： VOLVO TRUCK CORPORATION

发明人： Anders Eriksson ,  Claes Kuylenstierna

IPC分类号： B60W30/18 ,  B60W10/06 ,  B60W10/10 ,  F02B75/02 ,  F02D13/02 ,  F02D13/04 ,  F02D41/02 ,  F02D41/12

CPC分类号： B60W30/18109 ,  B60W10/06 ,  B60W10/10 ,  F02B75/02 ,  F02D13/0203 ,  F02D13/028 ,  F02D13/04 ,  F02D41/0215 ,  F02D41/12 ,  B60W2510/0638 ,  B60W2510/1005 ,  B60W2520/00 ,  B60W2530/10 ,  B60W2552/15 ,  F02B2075/025 ,  F02B2075/027 ,  F02D2200/101 ,  F02D2200/50 ,  F02D2200/702

摘要： A method for controlling a powertrain of a vehicle, the powertrain comprising:



an engine comprising mutually independently operable valves, the engine being configured to be operated in a four-stroke operation mode, and
a drivetrain comprising a transmission,

the method comprising:

while operating the engine in the four-stroke operation mode, identifying that a critical situation applies or is expected to apply, in which a fast downshift of the transmission is required,
initiating a downshift process in response to the identification of the critical situation,
during at least a part of the downshift process, increasing an engine speed by controlling at least the mutually independently operable valves of the engine such that the engine is temporarily operated in a two-stroke operation mode.

公开(公告)号：US20240301815A1

公开(公告)日：2024-09-12

申请号：US18667398

申请日：2024-05-17

申请人： HyTech Power, LLC

发明人： Evan Charles Johnson ,  William A. Wood

IPC分类号： F02B43/10 ,  B01D46/84 ,  C25B1/04 ,  C25B1/044 ,  C25B9/05 ,  C25B9/07 ,  C25B9/17 ,  C25B11/00 ,  C25B15/02 ,  C25B15/08 ,  F01N3/02 ,  F01N3/023 ,  F01N3/025 ,  F01N3/029 ,  F01N3/035 ,  F01P3/20 ,  F02B43/00 ,  F02B43/12 ,  F02B51/00 ,  F02B75/02 ,  F02D19/06 ,  F02D19/08 ,  F02D41/00 ,  F02D41/14 ,  F02D41/34 ,  F02M21/02 ,  F02M25/12

CPC分类号： F02B43/10 ,  B01D46/84 ,  C25B1/04 ,  C25B1/044 ,  C25B9/05 ,  C25B9/07 ,  C25B9/17 ,  C25B11/00 ,  C25B15/02 ,  C25B15/08 ,  F01N3/0205 ,  F01N3/023 ,  F01N3/025 ,  F01N3/0253 ,  F01N3/0293 ,  F01N3/035 ,  F01P3/20 ,  F02B43/00 ,  F02B43/12 ,  F02B51/00 ,  F02B75/02 ,  F02D19/0644 ,  F02D19/0671 ,  F02D19/08 ,  F02D19/081 ,  F02D41/0025 ,  F02D41/0027 ,  F02D41/345 ,  F02M21/0206 ,  F02M21/0221 ,  F02M21/0239 ,  F02M21/0248 ,  F02M21/0278 ,  F02M25/12 ,  B01D2279/30 ,  F01N2240/14 ,  F01N2240/34 ,  F01N2250/02 ,  F02B2043/106 ,  F02B2075/027 ,  F02D41/009 ,  F02D41/1446 ,  F02D41/1498 ,  F02D2200/021 ,  F02D2200/0404 ,  F02D2200/0406 ,  F02D2200/0602 ,  F02D2200/0606 ,  F02D2200/0625 ,  F02D2200/1002 ,  F02D2200/101

摘要： A system for efficient combustion of a carbonaceous fuel is presented. An ultra low quantity of enhancement gas may be introduced to an internal combustion engine to improve at least one operating metric of the internal combustion engine such as fuel economy and/or reduce engine-out emissions, for example in a vehicle or generator.

公开(公告)号：US12000332B2

公开(公告)日：2024-06-04

申请号：US18081192

申请日：2022-12-14

申请人： Matthew Jackson ,  Dimitrios Dardalis

发明人： Matthew Jackson ,  Dimitrios Dardalis

IPC分类号： F02B75/32 ,  F01L1/04 ,  F01M9/06 ,  F01P3/12 ,  F02B37/00 ,  F02B75/00 ,  F02B75/02 ,  F02B75/18 ,  F02B75/24 ,  F02B75/26 ,  F02B75/28 ,  F02D17/02 ,  F02F3/28

CPC分类号： F02B75/32 ,  F01L1/04 ,  F01M9/06 ,  F01P3/12 ,  F02B37/00 ,  F02B75/005 ,  F02B75/02 ,  F02B75/18 ,  F02B75/24 ,  F02B75/26 ,  F02B75/282 ,  F02D17/02 ,  F02F3/28 ,  F02B2075/025 ,  F02B2075/027 ,  F02B2075/1836

摘要： This invention has two main embodiments. An opposed piston 2-stroke axial engine and a 4-stroke axial engine. The opposed piston two stroke also offers an option of a novel cylinder deactivation design. Both, two stroke and four stroke engines share novel systems for coupling piston reciprocation to shaft rotation, piston and piston ring lubricant distribution, and provision for reacting out piston side load with minimum mechanical friction.

公开(公告)号：US11952938B2

公开(公告)日：2024-04-09

申请号：US18040830

申请日：2021-08-02

申请人： FPT INDUSTRIAL S.P.A.

发明人： Clino D'Epiro ,  Pierangelo Feola ,  Giuseppe Cereda ,  Marco Rocchini

IPC分类号： F02B33/22 ,  F02B29/04 ,  F02B75/02 ,  F02D13/02 ,  F02D13/04

CPC分类号： F02B33/22 ,  F02B29/0418 ,  F02B29/0481 ,  F02B75/02 ,  F02D13/0207 ,  F02D13/04 ,  F02B2075/025

摘要： Split-cycle internal combustion engine comprising at least one compressor cylinder and at least one combustion cylinder each associated with a relating piston and a relating head, equipped with at least one admission valve and one exhaust valve of the combustor piston, first controller of the at least one admission valve and second controller of the at least one exhaust valve, the piston of the combustion cylinder is associated with a crankshaft by a crank mechanism and when the engine is in a firing condition the second controller is arranged to cause a first opening event of the at least one exhaust valve in a first predetermined angular position of the crankshaft and when the engine is in the engine braking condition the second controller is arranged to reposition the first event in a second predetermined angular position out of phase by 180 degrees with respect to the first angular position.

公开(公告)号：US11913390B2

公开(公告)日：2024-02-27

申请号：US17691666

申请日：2022-03-10

申请人： BOMBARDIER RECREATIONAL PRODUCTS INC.

发明人： Bruno Schuehmacher ,  Luc Champigny

IPC分类号： F02D41/00 ,  F02B37/18 ,  F02D41/14 ,  F02B75/02 ,  F02M35/10

CPC分类号： F02D41/0007 ,  F02B37/183 ,  F02B2075/025 ,  F02D41/1446 ,  F02D2200/0404 ,  F02D2200/10 ,  F02D2200/101 ,  F02M35/1019

摘要： A method for controlling a two-stroke engine operatively connected to a turbocharger, the turbocharger being in fluid communication with the engine to provide a boost pressure thereto, the method including: comparing one of (i) an actual power output of the engine; and (ii) an exhaust temperature representative of an actual temperature of exhaust gas being discharged by the engine, with a corresponding threshold value thereof; in response to the one of the actual power output of the engine and the exhaust temperature being less than the corresponding threshold value: determining a corrective amount of boost pressure to add to the boost pressure of the turbocharger; and controlling the turbocharger to increase the boost pressure of the turbocharger by the corrective amount. Another method for controlling a two-stroke engine operatively connected to a turbocharger is also disclosed.

公开(公告)号：US20230399973A1

公开(公告)日：2023-12-14

申请号：US18334193

申请日：2023-06-13

申请人： Andreas Stihl AG & Co. KG

发明人： Michael Grether ,  Robert Koehli ,  Richard Wirt ,  Bernd Engel

IPC分类号： F02B33/02 ,  F02B75/02

CPC分类号： F02B33/02 ,  F02B75/02 ,  F02B2075/025

摘要： A two-stroke engine possesses a cylinder, in the cylinder bore of which a combustion chamber is formed. The combustion chamber is bounded by a reciprocating piston, which drives a crankshaft rotatably mounted in a crankcase. A crankcase interior is fluidically connected to the combustion chamber across at least one transfer channel in at least one position of the piston. The at least one transfer channel emerges with a discharge opening in the crankcase interior and with at least one transfer window on the cylinder bore. It is proposed that all transfer channels have an average length as measured from the discharge opening to the transfer window, the average length being at least 1.5 in relation to the stroke, and that the volume of the crankcase interior including all transfer channels is at most 3.1 in relation to the piston displacement.

公开(公告)号：US11828208B2

公开(公告)日：2023-11-28

申请号：US17915072

申请日：2021-03-23

申请人： Marek Zak

发明人： Marek Zak

IPC分类号： F01L7/12 ,  F01L7/06 ,  F02B25/06 ,  F02B75/02

CPC分类号： F01L7/12 ,  F01L7/06 ,  F02B25/06 ,  F02B75/02 ,  F01L2313/00 ,  F02B2075/025

摘要： The invention discloses a two-stroke internal combustion engine having an engine housing with a crankcase in which a crankshaft is connected to a piston moving in a cylinder, an exhaust port leading from the cylinder space and opening at the level of the lower dead center of the crankshaft, the exhaust port is configured to be closed by a piston when the crankshaft is in its top dead center position, characterized in that it further has a rotary disk with an opening or recess on a part of its circumference, or with a protrusion on a part of its circumference, the rotary disk extending with its circumference into the exhaust port so that the exhaust port is completely closable by the rotary disk.

公开(公告)号：US11795871B2

公开(公告)日：2023-10-24

申请号：US17905182

申请日：2021-02-15

申请人： YAMABIKO CORPORATION

发明人： Masanori Noguchi

IPC分类号： F02B25/00 ,  F02B75/02 ,  F02B25/06 ,  F02D41/40 ,  F02F3/24

CPC分类号： F02B75/02 ,  F02B25/06 ,  F02D41/401 ,  F02F3/24 ,  F02B2075/025

摘要： Provided is a two-stroke internal combustion engine, including: a fuel injection valve configured to supply a fuel into a crank chamber; an intake passage configured to allow only air to be sucked thereinto under a negative pressure generated when a piston is actuated; and a scavenging passage that allows communication between the crank chamber and a combustion chamber. Further, air passing through the intake passage is introduced into the scavenging passage, and air stagnant in the scavenging passage at end of air suction contributes to scavenging.

公开(公告)号：US20230323807A1

公开(公告)日：2023-10-12

申请号：US18334443

申请日：2023-06-14

申请人： Sky Moon Huddleston

发明人： Sky Moon Huddleston

IPC分类号： F02B75/00 ,  F02B75/02

CPC分类号： F02B75/002 ,  F02B2075/025 ,  F02B2075/027 ,  F02B75/02

摘要： The present invention relates to a two strokes per cycle Scotch Yoke engine that completes four power strokes per revolution per pair of pistons/cylinders by using both sides of each piston as a combustion chamber. This doubles the power to weight ratio over previous scotch yoke engines and quadruples the power to weight ratio over conventional 4 stroke cycle engines. The present invention is capable of operating in and withstanding the forces of either deflagration (subsonic) and pulse detonation (supersonic) cycles, and is capable of homogeneous charge compression ignition. The present invention can also be an internal/external combustion gas/steam hybrid. The present invention can operate under constant volume or constant pressure cycles as well as most thermal cycles of operation (EG the Otto and Diesel cycle). The present invention works best when using a modified Humphrey cycle to achieve homogeneous charge compression ignition pulse detonation engine using constant volume combustion.