公开(公告)号：US20220260028A1

公开(公告)日：2022-08-18

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 ,  F02B75/28 ,  F02D23/00 ,  F02D41/00 ,  F02D43/00

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：US20220128012A1

公开(公告)日：2022-04-28

申请号：US17568601

申请日：2022-01-04

申请人： ACHATES POWER, INC.

发明人： Ahmad Ghazi ,  DANIEL M. SCHUM ,  FABIEN G. REDON ,  SAMRAT M. PATIL, I

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

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：US11156184B2

公开(公告)日：2021-10-26

申请号：US16655076

申请日：2019-10-16

申请人： ACHATES POWER, INC.

发明人： Abhishek Sahasrabudhe ,  Miles Linscott ,  Sebastian Strauss

IPC分类号： F02F1/16 ,  F02B75/28 ,  F01P3/02 ,  F01P7/14 ,  F02B25/02 ,  F02B75/02

摘要： A cylinder assembly with a cylinder liner and a sleeve is provided that includes features that reduce coolant flow stagnation. The sleeve encloses a center section of the cylinder liner to form cooling channels that removes excess heat from the combustion area of the cylinder. The cylinder liner includes features for cooling between bridges in the cylinder's exhaust port.

公开(公告)号：US11047334B2

公开(公告)日：2021-06-29

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 ,  F02B25/08

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：US20200224595A1

公开(公告)日：2020-07-16

申请号：US16830622

申请日：2020-03-26

申请人： ACHATES POWER, INC.

发明人： NISHIT NAGAR ,  ARUNANDAN SHARMA

IPC分类号： F02D1/06 ,  F01B7/14 ,  F02D41/00 ,  F02D41/18 ,  F02D41/10 ,  F02B75/28 ,  F02B25/08 ,  F02B75/02 ,  F02M63/02

摘要： Control of fuel flow in a uniflow-scavenged, two-stroke cycle, opposed-piston engine includes limiting an amount of torque or fuel in response to a torque demand, based upon a comparison and a selection of fuel delivery options derived from a global airflow parameter and/or a trapped airflow parameter.

公开(公告)号：US20200080626A1

公开(公告)日：2020-03-12

申请号：US16669157

申请日：2019-10-30

申请人： ACHATES POWER, INC.

发明人： SUMANTH KASHYAP ,  ABHISHEK B. SAHASRABUDHE ,  JOHN M. KESSLER

IPC分类号： F16H57/12 ,  F02B75/28 ,  F16F15/14 ,  F16F15/173 ,  F16H55/18 ,  F16H57/00

摘要： An opposed-piston engine includes at least two of: a gear train with a backlash reducing means; a viscous damper; and a centrifugal pendulum absorber. The opposed-piston engine can include two crankshafts and a gear train to connect the crankshafts. Any viscous dampers and centrifugal pendulum absorbers can be used to mitigate torsional velocity fluctuations in crankshafts in the engine, and multiple viscous dampers and/or centrifugal pendulum absorbers can be used in an engine. The backlash reducing means can include any of a means to adjust the position of gears in a gear train relative to each other and one or more backlash reducing gears.

公开(公告)号：US20200018256A1

公开(公告)日：2020-01-16

申请号：US16556106

申请日：2019-08-29

申请人： ACHATES POWER, INC.

发明人： RYAN G. MACKENZIE

IPC分类号： F02F3/00 ,  F02B75/28

摘要： A piston for an internal combustion opposed-piston engine includes a crown part, a skirt part, and an outer part. The crown part includes a first ring belt region for supporting compression rings and an end surface shaped to form a combustion chamber with an end surface of an opposing piston. The skirt part includes a sidewall and a wristpin bore with a first opening and a second opening formed in the sidewall. The outer part includes a second ring belt region for supporting oil control rings. The crown part is joined to an upper end of the sidewall with one or more welding seams. The outer part is joined to a lower end of the sidewall with a welding seam.

公开(公告)号：US10190492B2

公开(公告)日：2019-01-29

申请号：US13858943

申请日：2013-04-08

申请人： Achates Power, Inc.

发明人： Kevin B. Fuqua ,  Fabien G. Redon

IPC分类号： F02B75/28 ,  F01L1/344 ,  F01B7/14 ,  F16H57/00

摘要： The timing or phasing of port openings and closings during operation of an opposed-piston engine is varied in response to changing engine speeds and loads by changing crankshaft phasing.

公开(公告)号：US10161345B2

公开(公告)日：2018-12-25

申请号：US15173478

申请日：2016-06-03

申请人： ACHATES POWER, INC.

发明人： Arunandan Sharma ,  Nishit Nagar ,  Suramya D. Naik ,  Daniel Schum

IPC分类号： F02D23/00 ,  F02D41/30 ,  F02D41/10 ,  F02D41/14 ,  F02D41/18 ,  F02B25/08 ,  F01B7/14 ,  F02B75/28 ,  F02D41/00 ,  F02B37/24 ,  F02B75/02 ,  F02D13/02 ,  F02D41/24 ,  F02M35/10 ,  F02M55/02

摘要： Control of airflow in a uniflow-scavenged, two-stroke cycle, opposed-piston engine during transient operation includes monitoring at least one operating parameter of the engine to recognize a transition to a transient state of engine operation. If a transient state of operation is detected, fuel injection and airflow into to the cylinders of the engine are controlled to optimize combustion and limit emissions. Airflow into cylinders of the engine may be controlled by increasing a scavenging ratio of the engine or by increasing a trapping efficiency of the engine.

公开(公告)号：US20180245520A1

公开(公告)日：2018-08-30

申请号：US15963948

申请日：2018-04-26

申请人： ACHATES POWER, INC.

发明人： NISHIT NAGAR ,  ARUNANDAN SHARMA

IPC分类号： F02D1/06 ,  F02B75/02 ,  F02M63/02 ,  F02B25/08

CPC分类号： F02D1/06 ,  F01B7/14 ,  F02B25/08 ,  F02B75/02 ,  F02B75/282 ,  F02B2075/025 ,  F02D41/0007 ,  F02D41/10 ,  F02D41/1458 ,  F02D41/182 ,  F02D2250/26 ,  F02D2250/38 ,  F02D2400/04 ,  F02M63/0225 ,  Y02T10/144

摘要： Control of fuel flow in a uniflow-scavenged, two-stroke cycle, opposed-piston engine includes limiting an amount of torque or fuel in response to a torque demand, based upon a comparison and a selection of fuel delivery options derived from a global airflow parameter and/or a trapped airflow parameter.