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US 11,608,773 B2Granted
Systems and methods of compression ignition engines
AssigneeNautilus Engineering, LLC
InventorMatthew T. Riley
Life of this patent
Estimating the term…
Abstract
Apparatuses, systems and method for utilizing multi-zoned combustion chambers (and/or multiple combustion chambers) for achieving compression ignition (and/or spark-assisted or fuel-assisted compression ignition) in an internal combustion engine are provided. In addition, improved apparatuses, systems and methods for achieving and/or controlling compression ignition (and/or spark-assisted or fuel-assisted compression ignition) in a “Siamese cylinder” internal combustion engine are provided.
Claims19
An internal combustion engine comprising:
- a cylinder;
- a first piston located within said cylinder, said first piston including a protuberance and being configured to move between a top-dead-center (“TDC”) and a bottom-dead-center (“BDC”) configuration, thereby defining a stroke of the first piston;
- and
- a cylinder head enclosing said first piston within said cylinder, said cylinder head including a recess associated with said protuberance,
- wherein said cylinder, cylinder head, and recess define a combustion chamber having a primary chamber and a secondary chamber, a bottom surface of said primary chamber being defined by a top surface of said protuberance when said protuberance is received by said recess,
- wherein the engine performs a dual-ignition combustion process, a first ignition process occurring in the primary chamber and a second ignition process occurring in the secondary chamber as the first piston is moving away from TDC, and
- wherein the second ignition process comprises expansion of fluid into the secondary chamber from the primary chamber.
4 more elements
An internal combustion engine comprising:
- a cylinder;
- a first piston located within said cylinder, said first piston including a protuberance and being configured to move between a top-dead-center (“TDC”) and a bottom-dead-center (“BDC”) configuration, thereby defining a stroke of the first piston;
- a cylinder head enclosing said first piston within said cylinder, said cylinder head including a recess associated with said protuberance;
- and
- a second piston,
- wherein said cylinder, cylinder head, and recess define a combustion chamber having a primary chamber and a secondary chamber,
- wherein the primary chamber defines a first volume when the first piston is at TDC,
- wherein the second piston is a variable compression ratio piston associated with the primary chamber,
- wherein the second piston is moveable between a first position and a second position, the first and second positions of the second piston being associated with maximum and minimum values of the first volume, respectively,
- wherein a bottom surface of said second piston defines at least part of a top surface of said primary chamber, and
- wherein said second piston is displaced from said secondary chamber.
8 more elements
An internal combustion engine comprising:
- a cylinder;
- a first piston located within said cylinder, said first piston being configured to move between a top-dead-center (“TDC”) and a bottom-dead-center (“BDC”) configuration, thereby defining a stroke of the first piston;
- a cylinder head enclosing said first piston within said cylinder, thereby defining a combustion chamber,
- a spark plug extending into said combustion chamber the spark plug being configured to selectively initiate a first ignition process;
- and
- a glow plug extending into said combustion chamber, the glow plug being configured to selectively initiate the first ignition process.
3 more elements
Dependencies are inferred from the claim text.