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US 11,136,914 B2Granted
Compression ignited combustion engine
AssigneeScania CV AB
InventorsBjörn Lindgren, Manuel Schellhase
Life of this patent
Estimating the term…
Abstract
A compression ignited combustion engine has at least one cylinder and first and second gas intake ports in a cylinder head restricting a combustion chamber. One gas intake passage leads to the two ports and is widened in a Y-shaped end influencing gas entering each port into a tangential flow in opposite direction with respect to the flow into the other port. The first intake port is designed to allow gas entering this port to continue said tangential flow so as to enter the combustion chamber in a swirl in a first rotation direction, whereas the second intake port is designed to guide gas entering this port to also enter the combustion chamber in a swirl in said first rotation direction.
Claims14
A compression ignited combustion engine comprising:
- at least one cylinder comprising:
- a combustion chamber;
- a cylinder head;
- and
- first and second gas intake ports arranged in the cylinder head each extending parallel to a first axis into the cylinder head, each of said first and second intake ports comprising an opening into the combustion chamber;
- and
- a gas intake passage extending from the first and second gas intake ports, along a length-wise extension that is substantially perpendicular to the first axis, said gas intake passage comprising a central passage leading to a Y-shaped end, where the Y-shaped end comprises respective individual passages leading from the central passage, where one of said individual passages is connected to said first gas intake port and the other of said individual passages is connected to the second gas intake port,
- wherein the first gas intake port is configured to guide gases into the combustion chamber along a tangential flow path in a first rotation direction, and
- wherein the second gas intake port is configured to guide gases into the combustion chamber, wherein said second gas intake port comprises a guiding arrangement configured to divide the second intake port into first and second guide parts, wherein the first guide part is configured to guide gases along the tangential flow path to the combustion chamber and the second guide part is provided with means for creating a helical flow path of the gases in the first rotation direction in the second guide part prior to the gases entering the combustion chamber.
6 more elements
A motor vehicle comprising a compression ignited combustion engine comprising:
- at least one cylinder comprising:
- a combustion chamber;
- a cylinder head;
- and
- first and second gas intake ports arranged in the cylinder head each extending parallel to a first axis into the cylinder head, each of said first and second intake ports comprising an opening into the combustion chamber;
- and
- a gas intake passage extending from the first and second gas intake ports, along a length-wise extension that is substantially perpendicular to the first axis, said gas intake passage comprising a central passage leading to a Y-shaped end, where the Y-shaped end comprises respective individual passages leading from the central passage, where one of said individual passages is connected to said first gas intake port and the other of said individual passages is connected to the second gas intake port,
- wherein the first gas intake port is configured to guide gases into the combustion chamber along a tangential flow path in a first rotation direction, and
- wherein the second gas intake port is configured to guide gases into the combustion chamber, wherein said second gas intake port comprises a guiding arrangement configured to divide the second intake port into first and second guide parts, wherein the first guide part is configured to guide gases along the tangential flow path to the combustion chamber and the second guide part is provided with means for creating a helical flow path of the gases in the first rotation direction in the second guide part prior to the gases entering the combustion chamber.
6 more elements
A method of creating propulsion of a vehicle comprising using an engine comprising:
- at least one cylinder comprising:
- a combustion chamber;
- a cylinder head;
- and
- first and second gas intake ports arranged in the cylinder head each extending parallel to a first axis into the cylinder head, each of said first and second intake ports comprising an opening into the combustion chamber;
- and
- a gas intake passage extending from the first and second gas intake ports, along a length-wise extension that is substantially perpendicular to the first axis, said gas intake passage comprising a central passage leading to a Y-shaped end, where the Y-shaped end comprises respective individual passages leading from the central passage, where one of said individual passages is connected to said first gas intake port and the other of said individual passages is connected to the second gas intake port,
- wherein the first gas intake port is configured to guide gases into the combustion chamber along a tangential flow path in a first rotation direction, and
- wherein the second gas intake port is configured to guide gases into the combustion chamber, wherein said second gas intake port comprises a guiding arrangement configured to divide the second intake port into first and second guide parts, wherein the first guide part is configured to guide gases along the tangential flow path to the combustion chamber and the second guide part is provided with means for creating a helical flow path of the gases in the first rotation direction in the second guide part prior to the gases entering the combustion chamber.
6 more elements
Dependencies are inferred from the claim text.