公开(公告)号：US12055111B2

公开(公告)日：2024-08-06

申请号：US18495621

申请日：2023-10-26

申请人： ACHATES POWER, INC.

发明人： Ahmad Ghazi ,  Daniel M. Schum ,  Fabien G. Redon ,  Samrat M. Patil

IPC分类号： F02D41/06 ,  F01N11/00 ,  F02B25/08 ,  F02B37/18 ,  F02B37/24 ,  F02B75/28 ,  F02D41/00 ,  F02D41/02 ,  F02D41/40 ,  F02D41/38

CPC分类号： F02D41/0245 ,  F01N11/00 ,  F02B25/08 ,  F02B37/18 ,  F02B37/24 ,  F02B75/282 ,  F02D41/0007 ,  F02D41/0255 ,  F02D41/401 ,  F02D2041/389

摘要： In an opposed-piston engine which includes a catalytic aftertreatment device in its exhaust system an exhaust gas condition indicating a catalyst temperature of the aftertreatment device is monitored. When the catalyst temperature is near or below a light-off temperature, a catalyst light-off procedure is executed to elevate the temperature of the catalyst.

公开(公告)号：US20240191653A1

公开(公告)日：2024-06-13

申请号：US18530723

申请日：2023-12-06

申请人： Achates Power, Inc.

发明人： Isaac B. Thomas

IPC分类号： F02B75/28

CPC分类号： F02B75/282

摘要： A piston is configured to be used in a cylinder bore of an opposed-piston. The piston includes a biaxial bearing. The biaxial bearing includes a biaxial wrist pin with a diameter configured to be less than half the diameter of the cylinder bore.

公开(公告)号：US11952951B2

公开(公告)日：2024-04-09

申请号：US17735923

申请日：2022-05-03

申请人： ACHATES POWER, INC.

发明人： Fabien G. Redon ,  Arunandan Sharma

IPC分类号： F02D41/02 ,  F02B25/08 ,  F02B37/04 ,  F02B75/02 ,  F02B75/28 ,  F02D23/00 ,  F02D41/00 ,  F02D43/00

CPC分类号： F02D41/0235 ,  F02B25/08 ,  F02B75/282 ,  F02D23/00 ,  F02D41/0007 ,  F02D43/00 ,  F02B37/04 ,  F02B2075/025 ,  F02D2200/0802

摘要： A method of operating a two-stroke cycle, opposed-piston engine comprising a pumping device coupled to pump air to cylinders of the engine through a charge air cooler and an aftertreatment system of thermally-activated devices coupled to receive exhaust from the cylinders by which a thermal state of the exhaust sufficient to sustain thermal activation of one or more of the aftertreatment system devices may be maintained during a deceleration or motoring condition of operation by reducing the mass airflow to the engine.

公开(公告)号：US11879338B2

公开(公告)日：2024-01-23

申请号：US17795898

申请日：2021-01-26

申请人： KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

发明人： James Turner

IPC分类号： F01B7/02 ,  F01B11/00 ,  F02B33/22 ,  F02B75/28

CPC分类号： F01B7/02 ,  F01B11/001 ,  F02B33/22 ,  F02B75/282

摘要： An opposed, free-piston engine includes a pair of adjacent cylinders, each extending from a first cylinder end to a second cylinder end along an elongate axis and having a first cylinder housing a first pair of opposed, free pistons including a first piston housed towards the first cylinder end and a second piston housed towards the second cylinder end; a second cylinder housing a second pair of opposed, free pistons having a third piston and a fourth piston; and a pair of link rods including a first link rod and a second link rod. The first link rod has a first link rod end and a second link rod end, the second link rod having a third link rod end and a fourth link rod end.

公开(公告)号：US11795867B2

公开(公告)日：2023-10-24

申请号：US17786366

申请日：2021-01-27

申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.

发明人： Masafumi Mori ,  Yuuki Koshiba ,  Kengo Tanaka ,  Takashi Ueda ,  Shigetoshi Sugata

IPC分类号： F02B23/06 ,  F02B75/28 ,  F02M61/14 ,  F02M61/18

CPC分类号： F02B23/0624 ,  F02B23/0669 ,  F02B75/282 ,  F02M61/14 ,  F02M61/1806

摘要： An opposed-piston engine according to an embodiment is a first fuel injection device configured to inject fuel from a circumferential wall surface of at least one cylinder into the cylinder, and a second fuel injection device disposed to be displaced in a circumferential direction so as to be opposite to the first fuel injection device across an axial center of the cylinder. Each of the first fuel injection device and the second fuel injection device includes a plurality of injection holes having different injection directions, in a cross-section orthogonal to the axial direction. A direction directed by a first downstream injection hole is configured to pass through a second injection region, and a direction directed by a second downstream injection hole is configured to pass through a first injection region.

公开(公告)号：US20180202348A1

公开(公告)日：2018-07-19

申请号：US15920286

申请日：2018-03-13

申请人： Ronald A. Holland

发明人： Ronald A. Holland

IPC分类号： F02B25/08 ,  F02B23/06 ,  F02B75/28 ,  F02B75/02 ,  F02B75/32 ,  F02M35/10

CPC分类号： F02B25/08 ,  F01B7/14 ,  F02B23/0633 ,  F02B23/0675 ,  F02B25/00 ,  F02B75/02 ,  F02B75/282 ,  F02B75/32 ,  F02B2075/025 ,  F02M35/1019 ,  Y02T10/125

摘要： An opposed piston engine includes approximately spherical combustion chamber formed by the two opposed pistons in a single cylinder and an intake manifold including gas hooks. The combustion chamber has a small cone shaped extension on each side leading to each of two opposed injectors located in the cylinder wall where the two pistons meet at the top of their stroke. The combustion chamber configuration reduces the surface area of the chamber and increases the burn length by a significant amount compared to known designs. The gas hooks in the intake manifold restrict the flow of exhaust gases into the intake manifold long enough for the pressure in the cylinder to blow down and the exhaust gasses to attain high velocity passing out through the exhaust manifold, allowing the intake ports to be uncovered before the exhaust ports.

公开(公告)号：US09926969B2

公开(公告)日：2018-03-27

申请号：US15444053

申请日：2017-02-27

申请人： ACHATES POWER, INC.

发明人： John M. Kessler ,  Clark A. Klyza

IPC分类号： F16C9/04 ,  F02F3/00 ,  F02B75/28 ,  F16J1/14 ,  F16J1/16 ,  F02B75/02 ,  F16C17/02 ,  F16C33/04 ,  F01B7/02 ,  F16C33/10 ,  F16C3/06 ,  F16C7/02 ,  F16C11/02 ,  F01M11/02

CPC分类号： F16C9/04 ,  F01B7/02 ,  F01M2011/025 ,  F01M2011/026 ,  F02B75/02 ,  F02B75/28 ,  F02B75/282 ,  F02B2075/025 ,  F02F3/00 ,  F16C3/06 ,  F16C7/023 ,  F16C11/02 ,  F16C17/022 ,  F16C33/04 ,  F16C33/1065 ,  F16C2360/22 ,  F16J1/14 ,  F16J1/16

摘要： A rocking journal bearing is provided in a piston coupling mechanism. The bearing includes a sleeve and a wristpin constructed with two sets of eccentrically-disposed bearing surfaces which alternate in accepting a compressive load during an operational cycle of the bearing. The sleeve includes a network of grooves to transport oil to the bearing surfaces. Lubricating oil flow through the bearing is minimized by limiting provision of pressurized oil from the wristpin to the network of grooves to portions of the cycle when one or the other of the sets of bearing surfaces receives the compressive load.

公开(公告)号：US09915188B2

公开(公告)日：2018-03-13

申请号：US15042422

申请日：2016-02-12

申请人： ACHATES POWER, INC.

发明人： John J. Koszewnik

IPC分类号： F02B25/08 ,  F02B11/02 ,  F02B75/28 ,  F02B21/00 ,  B60K6/12 ,  F02B29/00 ,  F04B3/00 ,  F01B7/14

CPC分类号： F02B11/02 ,  B60K6/12 ,  F01B7/14 ,  F02B21/00 ,  F02B29/00 ,  F02B75/282 ,  F04B3/00 ,  Y02T10/146

摘要： An opposed-piston engine system equipped for full hybrid compressed-air/combustion includes capacity for storing air compressed by the engine during a combustion mode of operation. The hybrid opposed-piston engine system includes a control mechanization for operating the opposed-piston engine in a combustion mode by provision of fuel, in a compressed-air mode by provision of stored compressed air, and in a combustion mode supplemented by provision of stored compressed air. A method of operating a hybrid vehicle equipped with an opposed-piston engine includes storing air compressed by the engine during a combustion mode of operation and operating in the vehicle a compressed-air mode by provision of stored compressed air.

公开(公告)号：US09790846B2

公开(公告)日：2017-10-17

申请号：US14782376

申请日：2014-04-04

申请人： OSP Engines Limited

发明人： Jean-Pierre Pirault ,  Ali Veshagh

IPC分类号： F02B75/02 ,  F02B33/14 ,  F02B25/08 ,  F01B7/14 ,  F02B75/28 ,  F02B75/18

CPC分类号： F02B33/14 ,  F01B7/14 ,  F02B25/08 ,  F02B75/02 ,  F02B75/18 ,  F02B75/282 ,  F02B2075/025

摘要： With reference to FIG. 2, the invention relates to an opposed stepped piston two-stroke engine comprising at least a first and a second cylinder, wherein the air piston is a stepped piston providing a first air transfer piston that expands and compresses a first air transfer volume to deliver air from the first air transfer volume to an air transfer system, and the exhaust piston is a stepped piston providing a second air transfer piston that expands and compresses a second air transfer volume to deliver air from the second air transfer volume to the air transfer system, each of the first and second air transfer volumes having an air inlet for receiving air; and wherein the air transfer system provides fluid connection between the respective first air transfer volume of each cylinder and the air port of another respective cylinder, via respective first air transfer conduits, and fluid connection between the respective second air transfer volume of each cylinder and the air port of the other respective cylinder, via respective second air transfer conduits, wherein the drive system is configured, for each cylinder, to have a predetermined phase angle such that one of the exhaust piston and air piston is driven before the other piston, causing delivery of air from its respective air transfer volume to the air transfer system before delivery of air occurs from the other of the air transfer volumes.

公开(公告)号：US09745915B2

公开(公告)日：2017-08-29

申请号：US14181566

申请日：2014-02-14

申请人： Pinnacle Engines, Inc.

发明人： James M. Cleeves

IPC分类号： F01L5/04 ,  F02F1/14 ,  F01L5/06 ,  F01L7/04 ,  F02B25/08 ,  F02B75/28 ,  F02D13/02 ,  F02D15/02 ,  F02F1/18 ,  F01L7/00 ,  F01L9/02 ,  F01P3/02

CPC分类号： F02F1/14 ,  F01L5/06 ,  F01L7/00 ,  F01L7/04 ,  F01L9/02 ,  F01L2820/033 ,  F01P2003/021 ,  F02B25/08 ,  F02B75/28 ,  F02B75/282 ,  F02D13/0269 ,  F02D13/028 ,  F02D15/02 ,  F02F1/186 ,  Y02T10/142

摘要： An internal combustion engine is provided. Facing pistons eliminate a cylinder head, thereby reducing heat losses through a cylinder head. Facing pistons also halve the stroke that would be required for one piston to provide the same compression ratio, and the engine can thus be run at higher revolutions per minute and produce more power. An internal sleeve valve is provided for space and other considerations. A combustion chamber size-varying mechanism allows for adjustment of the minimum size of an internal volume to increase efficiency at partial-power operation. Variable intake valve operation is used to control engine power.