System and method for control of compression in internal combustion engine via compression ratio and elastic piston

Flowers, Daniel L.

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Title: System and method for control of compression in internal combustion engine via compression ratio and elastic piston

Abstract

The present disclosure relates to a system for controlling ignition of an air/fuel mixture intake charge directed into an internal combustion engine. The system may have a longitudinally movable inner cylinder liner configured to fit within a cylinder wall portion of an internal combustion engine, and able to receive a piston of the engine therein. A portion of the inner cylinder liner defines an internal volume forming a combustion chamber, and the internal volume controls a compression ratio of the cylinder. The system also has a cylinder head assembly operatively associated with the inner cylinder liner and able to move linearly to cause longitudinal displacement of the inner cylinder liner relative to the cylinder wall portion. This enables the volume of the combustion chamber to be further varied, to thus further vary the compression ratio.

Inventors:: Flowers, Daniel L.

Issue Date:: Tue Aug 30 00:00:00 EDT 2022

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1925033

Patent Number(s):: 11428174

Application Number:: 17/168,933

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02B - INTERNAL-COMBUSTION PISTON ENGINES

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES

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F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02B - INTERNAL-COMBUSTION PISTON ENGINES
F02B2075/025 - {two}
F02B75/041 - {by means of cylinder or cylinderhead positioning}
F02B75/044 - {by means of an adjustable piston length}
F02B75/38 - Reciprocating - piston engines

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
F02D15/04 - by alteration of volume of compression space without changing piston stroke
F02D35/02 - on interior conditions

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02F - CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES
F02F1/004 - {Cylinder liners

Show less

DOE Contract Number:: AC52-07NA27344

Resource Type:: Patent

Resource Relation:: Patent File Date: 02/05/2021

Country of Publication:: United States

Language:: English

Citation Formats


                    Flowers, Daniel L. System and method for control of compression in internal combustion engine via compression ratio and elastic piston.  United States: N. p., 2022. 
        Web.

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                    Flowers, Daniel L. System and method for control of compression in internal combustion engine via compression ratio and elastic piston.  United States.

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                    Flowers, Daniel L. Tue .  
        "System and method for control of compression in internal combustion engine via compression ratio and elastic piston".  United States.  https://www.osti.gov/servlets/purl/1925033.

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@article{osti_1925033,

  title        = {System and method for control of compression in internal combustion engine via compression ratio and elastic piston},

  author       = {Flowers, Daniel L.},

  abstractNote = {The present disclosure relates to a system for controlling ignition of an air/fuel mixture intake charge directed into an internal combustion engine. The system may have a longitudinally movable inner cylinder liner configured to fit within a cylinder wall portion of an internal combustion engine, and able to receive a piston of the engine therein. A portion of the inner cylinder liner defines an internal volume forming a combustion chamber, and the internal volume controls a compression ratio of the cylinder. The system also has a cylinder head assembly operatively associated with the inner cylinder liner and able to move linearly to cause longitudinal displacement of the inner cylinder liner relative to the cylinder wall portion. This enables the volume of the combustion chamber to be further varied, to thus further vary the compression ratio.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Aug 30 00:00:00 EDT 2022},

  month        = {Tue Aug 30 00:00:00 EDT 2022}

}

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Works referenced in this record:

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