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：US20230030878A1

公开(公告)日：2023-02-02

申请号：US17873473

申请日：2022-07-26

申请人： Achates Power, Inc.

发明人： Daniel M. Chown ,  Ryan G. MacKenzie ,  Isaac B. Thomas

IPC分类号： F02B75/28 ,  F02F3/00 ,  F01B7/02

摘要： In an opposed-piston engine, a piston has a top land. The piston top land has a non-cylindrical shape which affords more clearance with a piston bore to thrust and anti-thrust sides than to front-facing and rear facing sides.

公开(公告)号：US11384681B2

公开(公告)日：2022-07-12

申请号：US16694943

申请日：2019-11-25

申请人： ACHATES POWER, INC.

发明人： Govindarajan Kothandaraman ,  Hoseinali Borhan ,  David E. Koeberlein ,  Dwight A. Doig

IPC分类号： F02B29/04 ,  F02B75/28 ,  F02M35/10 ,  F02B25/08 ,  F02B75/24

摘要： An opposed-piston engine includes an electronic sensor located in a charge air channel, at position between an outlet of a charge air cooler and an air intake component that distributes charge air to cylinder intake ports of the engine. The electronic sensor is disposed to measure a rate of mass airflow between the outlet of the charge air cooler and the intake component and generate electronic signals indicative of the rate of mass airflow from the charge air cooler. A control mechanization of the opposed-piston engine is electrically connected to the electronic sensor for controlling air handling devices, fuel provisioning devices, and/or EGR devices in response to the electronic signals.

公开(公告)号：US20210239071A1

公开(公告)日：2021-08-05

申请号：US17213039

申请日：2021-03-25

申请人： ACHATES POWER, INC.

发明人： Andrew P. Perr ,  John J. Koszewnik ,  Gary A. Vrsek

IPC分类号： F02F1/10 ,  B22C9/10 ,  B22D29/00 ,  B28B1/00 ,  B33Y10/00 ,  F01P3/02 ,  F02B75/28 ,  F02F1/14 ,  B33Y80/00

摘要： A parent bore cylinder block of an internal combustion, opposed-piston engine includes cooling passages that are formed using a 3-D printed casting core. The casting core can include portions that are ceramic. The parent bore cylinder block can include multiple cylinders, each cylinder with cooling passages and turbulence inducing features in those cooling passages, particularly surrounding the central portions of the cylinders.

公开(公告)号：US20210156298A1

公开(公告)日：2021-05-27

申请号：US16694943

申请日：2019-11-25

申请人： ACHATES POWER, INC.

发明人： GOVINDARAJAN KOTHANDARAMAN ,  Hoseinali Borhan ,  David E. Koeberlein ,  Dwight A. Doig

IPC分类号： F02B29/04 ,  F02B75/28 ,  F02B75/24 ,  F02B25/08 ,  F02M35/10

摘要： An opposed-piston engine includes an electronic sensor located in a charge air channel, at position between an outlet of a charge air cooler and an air intake component that distributes charge air to cylinder intake ports of the engine. The electronic sensor is disposed to measure a rate of mass airflow between the outlet of the charge air cooler and the intake component and generate electronic signals indicative of the rate of mass airflow from the charge air cooler. A control mechanization of the opposed-piston engine is electrically connected to the electronic sensor for controlling air handling devices, fuel provisioning devices, and/or EGR devices in response to the electronic signals.

公开(公告)号：US20210140389A1

公开(公告)日：2021-05-13

申请号：US16681430

申请日：2019-11-12

申请人： ACHATES POWER, INC

发明人： ROBERT G. SPERRY ,  James R. Shaw

IPC分类号： F02F1/42

摘要： An air intake system is provided that supplies charge air to multiple cylinders in an in-line configuration in an uniflow-scavenged, two-stroke opposed-piston engine. The engine is configured such that the intake ports of the cylinders are situated in one intake chamber within the engine block. The air intake chamber includes a feature to balance the mass of air that reaches the intake port of each cylinder in the engine.

公开(公告)号：US10677188B2

公开(公告)日：2020-06-09

申请号：US15806225

申请日：2017-11-07

申请人： ACHATES POWER, INC.

发明人： John J. Koszewnik ,  Bryant A. Wagner

IPC分类号： F02B77/00 ,  F02F1/00 ,  F02F1/18 ,  F02B75/28

摘要： A cylinder liner for an opposed-piston engine, and corresponding methods of extending engine durability and thermal management therewith, has opposite ends and a bore with a longitudinal axis for supporting reciprocating movement of a pair of opposed pistons. An intermediate portion of the liner extends between the opposite ends and includes an annular liner portion within which the pistons reach respective TC locations. A liner ring is seated in a portion of the bore in the annular liner portion, between the TC locations, for scraping carbon from top lands of the pistons and/or increasing the thermal resistance of the annular liner portion.

公开(公告)号：US20200149493A1

公开(公告)日：2020-05-14

申请号：US16189129

申请日：2018-11-13

申请人： ACHATES POWER, INC.

发明人： ANDREW P. PERR ,  JOHN J. KOSZEWNIK ,  GARY A. VRSEK

IPC分类号： F02F1/10 ,  F01P3/02 ,  F02F1/14 ,  B33Y80/00 ,  B33Y10/00 ,  F02B75/28 ,  B28B1/00 ,  B22D29/00 ,  B22C9/10

摘要： A parent bore cylinder block of an internal combustion, opposed-piston engine includes cooling passages that are formed using a 3-D printed casting core. The casting core can include portions that are ceramic. The parent bore cylinder block can include multiple cylinders, each cylinder with cooling passages and turbulence inducing features in those cooling passages, particularly surrounding the central portions of the cylinders.