公开(公告)号：US12055111B2

公开(公告)日：2024-08-06

申请号：US18495621

申请日：2023-10-26

Applicant: ACHATES POWER, INC.

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

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

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

Abstract: 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：US11952951B2

公开(公告)日：2024-04-09

申请号：US17735923

申请日：2022-05-03

Applicant: ACHATES POWER, INC.

Inventor： Fabien G. Redon ,  Arunandan Sharma

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

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

Abstract: 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：US20180328263A1

公开(公告)日：2018-11-15

申请号：US15775286

申请日：2015-12-04

Applicant: Richard Kellogg Morton ,  VOLVO TRUCK CORPORATION

Inventor： Richard Kellogg Morton

IPC: F02B25/08 ,  F02B25/02 ,  F02B75/02 ,  F02D9/04 ,  F02D9/02 ,  F02D9/10 ,  F02D9/14

CPC classification number: F02B25/08 ,  F02B25/02 ,  F02B25/04 ,  F02B25/06 ,  F02B75/02 ,  F02B2075/025 ,  F02D9/02 ,  F02D9/04 ,  F02D9/10 ,  F02D9/14

Abstract: A uniflow engine includes a cylinder having a cylinder wall, a volume exterior to the cylinder, at least one channel extending between the cylinder wall and the volume, and a valve outside of the cylinder configured to open and close flow communication between the cylinder and the volume through the channel.

公开(公告)号：US20180202348A1

公开(公告)日：2018-07-19

申请号：US15920286

申请日：2018-03-13

Applicant: Ronald A. Holland

Inventor： Ronald A. Holland

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

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

Abstract: 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：US09790846B2

公开(公告)日：2017-10-17

申请号：US14782376

申请日：2014-04-04

Applicant: OSP Engines Limited

Inventor： Jean-Pierre Pirault ,  Ali Veshagh

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

CPC classification number: F02B33/14 ,  F01B7/14 ,  F02B25/08 ,  F02B75/02 ,  F02B75/18 ,  F02B75/282 ,  F02B2075/025

Abstract: 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

Applicant: Pinnacle Engines, Inc.

Inventor： James M. Cleeves

IPC: 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 classification number: 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

Abstract: 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.

公开(公告)号：US09695763B2

公开(公告)日：2017-07-04

申请号：US14930508

申请日：2015-11-02

Applicant: ACHATES POWER, INC.

Inventor： Randy E. Herold ,  Nishit Nagar ,  Fabien G. Redon

IPC: F02B25/08 ,  F02D41/00 ,  F02B75/28 ,  F02D41/14 ,  F01B17/02 ,  F01B7/14 ,  F02B33/40 ,  F02B39/16 ,  F02M25/07

CPC classification number: F02D41/0007 ,  F01B7/14 ,  F01B17/02 ,  F02B25/08 ,  F02B33/40 ,  F02B39/16 ,  F02B75/28 ,  F02B75/282 ,  F02D41/005 ,  F02D41/0052 ,  F02D41/0062 ,  F02D41/0072 ,  F02D41/1458 ,  F02D2041/0067 ,  F02D2200/0402 ,  F02D2200/0411 ,  F02D2400/04 ,  F02M26/04 ,  Y02T10/144 ,  Y02T10/47

Abstract: In an air handling system of a uniflow-scavenged, two-stroke cycle opposed-piston engine, one or more engine operating state parameters are sensed, numerical values of air handling parameters based on trapped conditions in a cylinder of the engine at the last port closing of an engine operating cycle are determined in response to the sensed parameters, the numerical values are evaluated, and one or more of the numerical values is adjusted in response to the evaluation. The adjusted numerical values are used to control charge air flow and EGR flow in the air handling system.

公开(公告)号：US09631550B2

公开(公告)日：2017-04-25

申请号：US14646665

申请日：2013-11-21

Applicant: SCALZO AUTOMOTIVE RESEARCH PTY LTD

Inventor： Joseph Scalzo

IPC: F02B75/22 ,  F16H23/00 ,  F01B3/00 ,  F02F3/00 ,  B23P15/10 ,  F02B25/08 ,  F02B75/24 ,  F02B75/32 ,  F16C5/00 ,  F16C11/02 ,  F02B37/00 ,  F01B9/02 ,  F02B33/00 ,  F02B39/10 ,  F02B75/02

CPC classification number: F02B25/08 ,  F01B9/026 ,  F02B33/00 ,  F02B37/00 ,  F02B39/10 ,  F02B75/24 ,  F02B75/32 ,  F02B2075/025 ,  F02B2730/02 ,  F16C5/00 ,  F16C11/02 ,  Y02T10/144

Abstract: An internal combustion engine enabling asymmetric port timing has an engine mechanism including a crankshaft having a crankpin to which each piston of an opposed pair of pistons is connected and by which the pistons are reciprocatable in a respective one of axially inline cylinders. The mechanism also includes a crosshead having opposite ends on each of which a respective piston is mounted, and a coupling between the crosshead and the crankpin by which the pistons are caused to oscillate circumferentially as the pistons are driven to reciprocate.

公开(公告)号：US09599016B2

公开(公告)日：2017-03-21

申请号：US14402001

申请日：2013-03-15

Applicant: Raymond F. Lippitt

Inventor： Raymond F. Lippitt

IPC: F02B41/08 ,  F02B75/28 ,  F02B33/22 ,  F02B75/24 ,  F02B33/44 ,  F02B41/06 ,  F02B25/08 ,  F02B25/04 ,  F01B7/14 ,  F02B75/18

CPC classification number: F02B75/28 ,  F01B7/14 ,  F02B25/04 ,  F02B25/08 ,  F02B33/22 ,  F02B33/44 ,  F02B41/06 ,  F02B41/08 ,  F02B75/18 ,  F02B75/246

Abstract: This invention relates to internal combustion engines and more particularly to internal combustion engines and methods of operating the engines with a new fuel saving cycle. Various embodiments use a passage between adjacent cylinders to enable a mode in which fuel combusted in one cylinder supplies pressure to the other that has not been supplied with fuel, thus enabling driving of both cylinders with less fuel.

公开(公告)号：US09528402B2

公开(公告)日：2016-12-27

申请号：US14444955

申请日：2014-07-28

Applicant: Pinnacle Engines, Inc.

Inventor： James M. Cleeves ,  Michael A. Willcox

IPC: F01L13/00 ,  F01N3/20 ,  F01N9/00 ,  F02D41/02 ,  F02D13/02 ,  F02D15/00 ,  F02B25/08

CPC classification number: F01L13/0015 ,  F01N3/2006 ,  F01N9/00 ,  F01N2430/10 ,  F02B25/08 ,  F02D13/0215 ,  F02D13/0261 ,  F02D15/00 ,  F02D41/0245 ,  Y02T10/16 ,  Y02T10/18 ,  Y02T10/26

Abstract: Energy to speed heating of a catalyst associated with an internal combustion engine can be provided in the form of sensible energy (heat) via hot combustion products. In some variations, timing of opening and/or closing of an exhaust valve can be manipulated to increase sensible heat delivered to the catalyst in the exhaust gases.

Abstract translation: 能够加速与内燃机相关联的催化剂的能量可以通过热燃烧产物以显热（热）的形式提供。 在一些变型中，可以操纵排气阀的打开和/或关闭的时间以增加输送到废气中的催化剂的显热。