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US 2018/0283314 A1Published application
Internal combustion engine pistons and scavenging methods
AssigneeQuest Engines, LLC
InventorRoy A. Blom
Life of this patent
Estimating the term…
Abstract
Cooperatively shaped piston and cylinder head arrangements for internal combustion engines are disclosed. The piston may have a domed head with one or more curved exhaust channels and inlet channels formed therein. The piston cylinder may have curved surfaces that are exact or close inverse or negative counterparts to the curved surfaces of all or part of the domed head, including the exhaust channels, and/or inlet channels formed on the piston.
Claims28
An internal combustion engine comprising:
- an engine cylinder having an intake port and an exhaust port;
- a piston disposed in said engine cylinder, said piston having a lower skirt and an upper dome;
- first and second diametrically opposed and identical concave channels formed on the piston upper dome;
- and
- a concave downward sloped channel formed on the upper dome,
- wherein the first and second diametrically opposed and identical concave channels are proximal to the intake port relative to a first reference plane that is equidistant at all points from the exhaust port and the intake port,
- wherein the first and second diametrically opposed and identical concave channels are equally spaced from a second reference plane that is perpendicular to the first reference plane, and
- wherein the concave downward sloped channel is proximal to the exhaust port relative to the first reference plane and longitudinally bisected by the second reference plane.
5 more elements
An internal combustion engine comprising:
- an engine cylinder;
- an engine cylinder head having an intake port substantially diametrically opposite to an exhaust port;
- a piston disposed in said engine cylinder, said piston having a lower skirt portion and an upper domed portion, said upper domed portion proximal to the engine cylinder head and terminating at an upper-most point at an apex;
- first and second channels formed in said upper domed portion in relative proximity to the intake port as compared to the exhaust port, and formed on respective first and second sides of the upper domed portion,
- wherein said first and second sides of the upper domed portion are defined by a reference plane that extends between the intake port and the exhaust port and that bisects the upper domed portion;
- and
- a third channel formed in said upper domed portion between the first and second channels, and formed in relative proximity to the exhaust port as compared with the intake port.
4 more elements
An internal combustion engine piston comprising:
- a lower skirt;
- an upper dome having an apex;
- first and second diametrically opposed and concave channels formed on the upper dome below the apex;
- and
- a concave downward sloped channel formed on the upper dome between the first and second diametrically opposed concave channels,
- wherein the first and second diametrically opposed and concave channels are equally spaced from a first reference plane that is coextensive with a reference center axis for the piston skirt, and off-center relative to a second reference plane that is perpendicular to the first reference plane and coextensive with the reference center axis for the piston skirt, and
- wherein the concave downward sloped channel is centered relative to the first reference plane, and off-center relative to the second reference plane.
4 more elements
Dependencies are inferred from the claim text.