公开(公告)号：US12000331B2

公开(公告)日：2024-06-04

申请号：US18077007

申请日：2022-12-07

Applicant: MAINSPRING ENERGY, INC.

Inventor： Adam Simpson ,  Shannon Miller ,  Matt Svrcek

IPC: F02B71/04 ,  F01B11/00 ,  F02B25/08 ,  F02B63/04 ,  F02B71/00 ,  F02B75/28 ,  H02K7/18 ,  H02K35/02 ,  F01B7/02 ,  F02B1/12

CPC classification number: F02B71/04 ,  F01B11/001 ,  F02B25/08 ,  F02B63/041 ,  F02B71/00 ,  F02B75/282 ,  H02K7/1892 ,  H02K35/02 ,  F01B7/02 ,  F01B11/007 ,  F02B1/12

Abstract: Various embodiments of the present invention are directed toward a linear generator, comprising: a cylinder having a cylinder wall and a pair of ends, the cylinder including a reaction section disposed in a center portion of the cylinder; a pair of opposed piston assemblies adapted to move linearly within the cylinder, each piston assembly disposed on one side of the reaction section opposite the other piston assembly, each piston assembly including a spring rod and a piston comprising a solid front section adjacent the reaction section and a gas section; and a pair of linear electromagnetic machines adapted to directly convert kinetic energy of the piston assembly into electrical energy, and adapted to directly convert electrical energy into kinetic energy of the piston assembly for providing compression work during the compression stroke.

公开(公告)号：US11946435B2

公开(公告)日：2024-04-02

申请号：US17699456

申请日：2022-03-21

Applicant: Mainspring Energy, Inc.

Inventor： Matt Svrcek

IPC: F02F3/28 ,  F02B71/00 ,  F16J1/00 ,  F16J1/09 ,  F16J9/08 ,  F16J9/12

CPC classification number: F02F3/28 ,  F02B71/00 ,  F16J1/001 ,  F16J1/09 ,  F16J9/08 ,  F16J9/12

Abstract: The present disclosure provides an open-faced piston with a circumferential groove into which a piston ring assembly is arranged. Openings at the bottom of the circumferential groove and between a front land of the open-faced piston and the piston face are provided. The openings are arranged to allow for a combustion reaction to propagate through the volume defined between the bottom of the piston ring assembly and the piston face such that at least a portion of an air and fuel mixture located in that volume is reacted.

公开(公告)号：US11578646B2

公开(公告)日：2023-02-14

申请号：US17734350

申请日：2022-05-02

Applicant: Mainspring Energy, Inc.

Inventor： Christopher Gadda ,  Matthew Roelle ,  Adam Simpson

IPC: F02B71/04 ,  H02K7/18 ,  F02B71/00 ,  F02B63/04

Abstract: Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a driver section may be provided in a free-piston combustion engine for storing energy during an expansion stroke. The driver section may be configured to store sufficient energy to perform the subsequent stroke. In some embodiments, the driver section may be configured to store sufficient energy so as to enable the engine to operate continuously across engine cycles without electrical energy input. A linear electromagnetic machine may be provided in a free-piston combustion engine for converting the kinetic energy of a piston assembly into electrical energy.

公开(公告)号：US20220364502A1

公开(公告)日：2022-11-17

申请号：US17734350

申请日：2022-05-02

Applicant: Mainspring Energy, Inc.

Inventor： Christopher Gadda ,  Matthew Roelle ,  Adam Simpson

IPC: F02B71/04 ,  H02K7/18 ,  F02B71/00 ,  F02B63/04

Abstract: Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a driver section may be provided in a free-piston combustion engine for storing energy during an expansion stroke. The driver section may be configured to store sufficient energy to perform the subsequent stroke. In some embodiments, the driver section may be configured to store sufficient energy so as to enable the engine to operate continuously across engine cycles without electrical energy input. A linear electromagnetic machine may be provided in a free-piston combustion engine for converting the kinetic energy of a piston assembly into electrical energy.

公开(公告)号：US20220282620A1

公开(公告)日：2022-09-08

申请号：US17825928

申请日：2022-05-26

Applicant: Aquarius Engines (A.M.) Ltd.

Inventor： Shaul Haim YAAKOBY

IPC: F01B11/00 ,  F01L7/02 ,  F01N13/10 ,  F02B71/00 ,  F02B71/04 ,  F02B75/00 ,  F02F1/00 ,  F02F1/06 ,  F02F1/22 ,  F02F1/24 ,  F02F3/00 ,  F02F3/28 ,  F02M35/10 ,  F02M61/14 ,  F16J1/00 ,  F16J1/12 ,  F16J7/00 ,  F16J9/06 ,  F16J9/12 ,  F16J9/20

Abstract: An internal combustion may include a cylinder having a first combustion chamber at one end and a second combustion chamber at an opposing end, first and second cylinder heads located at an end of the first and second combustion chambers, respectively, and a double-faced piston slidably mounted therein. The piston may be configured to move in a first stroke that includes an expansion stroke portion and a non-expansion stroke portion. The engine may further include first and second piston rod portions extending from opposite faces of the piston. A recess in the piston rod portions may be configured to communicate gases between a combustion chamber and locations outside the cylinder. There may also be a chamber surrounding the first or second piston rod portion, the chamber configured to be supplied with gas and the chamber being isolated from the first combustion chamber and the second combustion chamber.

公开(公告)号：US11313318B2

公开(公告)日：2022-04-26

申请号：US16874322

申请日：2020-05-14

Applicant: Mainspring Energy, Inc.

Inventor： Matt Svrcek

IPC: F02F3/28 ,  F16J1/09 ,  F16J9/08 ,  F02B71/00 ,  F16J1/00 ,  F16J9/12

Abstract: The present disclosure provides an open-faced piston with a circumferential groove into which a piston ring assembly is arranged. Openings at the bottom of the circumferential groove and between a front land of the open-faced piston and the piston face are provided. The openings are arranged to allow for a combustion reaction to propagate through the volume defined between the bottom of the piston ring assembly and the piston face such that at least a portion of an air and fuel mixture located in that volume is reacted.

公开(公告)号：US20210324812A1

公开(公告)日：2021-10-21

申请号：US17350224

申请日：2021-06-17

Applicant: Mainspring Energy, Inc.

Inventor： Matthew Roelle ,  Christopher Gadda

IPC: F02D41/14 ,  F02B71/04 ,  F02B63/04 ,  F02D35/02 ,  F02D41/00 ,  F02B71/00 ,  F01B11/00

Abstract: Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a method and system are provided for displacing a free-piston assembly to achieve a desired engine performance by repeatedly determining position-force trajectories over the course of a propagation path and effecting the displacement of the free-piston assembly based, at least in part, on the position-force trajectory. In a dual-piston assembly free-piston engine, synchronization of the two piston assemblies is provided.

公开(公告)号：US20210189954A1

公开(公告)日：2021-06-24

申请号：US17195818

申请日：2021-03-09

Applicant: Aquarius Engines (A.M.) Ltd.

Inventor： Shaul Haim YAAKOBY

IPC: F02B71/00 ,  F16J1/12 ,  F16J7/00

Abstract: An internal combustion engine may include an engine block, a cylinder defining at least one combustion chamber, and a piston in the cylinder. The piston may travel in a first stroke from one end to an opposite end of the cylinder, and may be sized relative to the cylinder to enable an expansion stroke portion of the first stroke while the piston travels under gas expansion pressure, and a momentum stroke portion of the first stroke for the remainder of the first stroke following the expansion stroke portion. A passageway may be formed in the piston rod to communicate gas flow between a first combustion chamber and an area external to the cylinder when the piston is in a first position, and to communicate gas flow between a second combustion chamber and an area external to the cylinder when the piston is in a second position.

公开(公告)号：US20210010437A1

公开(公告)日：2021-01-14

申请号：US16910673

申请日：2020-06-24

Applicant: Mainspring Energy, Inc.

Inventor： Matthew Roelle ,  Christopher Gadda

IPC: F02D41/14 ,  F02B71/04 ,  F02B63/04 ,  F02D35/02 ,  F02D41/00 ,  F02B71/00 ,  F01B11/00

Abstract: Various embodiments of the present disclosure are directed towards free-piston combustion engines. As described herein, a method and system are provided for displacing a free-piston assembly to achieve a desired engine performance by repeatedly determining position-force trajectories over the course of a propagation path and effecting the displacement of the free-piston assembly based, at least in part, on the position-force trajectory. In a dual-piston assembly free-piston engine, synchronization of the two piston assemblies is provided.

公开(公告)号：US10815878B2

公开(公告)日：2020-10-27

申请号：US15915877

申请日：2018-03-08

Applicant: The Government of the United States of America, as represented by the Secretary of Homeland Security

Inventor： Shane R. J. Rainey ,  Thomas C. Rodzewicz ,  Julian J. Blanco ,  Ryan T. Ostrander

IPC: F02B63/04 ,  F02D13/02 ,  F02D41/14 ,  F02D41/30 ,  F02B75/24 ,  F02N11/04 ,  H02K7/18 ,  H02P9/04 ,  F01B11/00 ,  H02P25/06 ,  F02B71/00 ,  F01B11/02 ,  H02P9/00 ,  F02M25/03 ,  F02B1/14 ,  F02B75/18 ,  F02D41/00 ,  F02B47/02 ,  F02D41/34 ,  F02M25/025 ,  F02D15/00

Abstract: A homogeneous charge compression ignition free-piston linear generator is disclosed. The linear generator includes a housing having cylinders at opposite ends. A double-ended piston assembly is to move linearly in the housing to convert kinetic energy of the piston assembly into electrical energy, and to enable conversion of electrical energy into kinetic energy of the piston assembly. Sensors measure one or more states of the cylinders and/or piston assembly, and a controller controls the linear generator based on the sensor data.