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US 12,565,849 B2Granted
Spray guided stratification for fueling a passive pre-chamber
AssigneeSaudi Arabian Oil Company
InventorsXin Yu, Anqi Zhang, Andrew Baur, Nayan Engineer
Life of this patent
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Abstract
An engine includes an engine block having a cylinder, a piston movably disposed in a main chamber of the cylinder, a prechamber adjacent to and in fluid communication with the main chamber via a prechamber nozzle, and a fuel injector in fluid communication with the main chamber, wherein the fuel injector has spray nozzles interfacing with the main chamber. The fuel injector and the prechamber are aligned such that a first nozzle of the spray nozzles is directed towards the prechamber nozzle.
Claims19
An engine, comprising:
- an engine block having a cylinder;
- a piston movably disposed in a main chamber of the cylinder;
- a prechamber adjacent to and in fluid communication with the main chamber via a prechamber nozzle;
- and
- a fuel injector having a plurality of spray nozzles in fluid communication with the main chamber, the plurality of spray nozzles comprising:
- a first spray nozzle with a first spray angle;
- and
- at least one second spray nozzle with a second spray angle,
- wherein the first spray angle is larger than the second spray angle, such that the first spray angle is directed towards and aligned with the prechamber nozzle, while the second spray angle is directed towards the main chamber.
6 more elements
A prechamber injection method, comprising:
- providing an engine comprising:
- an engine block having a cylinder;
- a piston movably disposed in a main chamber of the cylinder;
- a prechamber adjacent to and in fluid communication with the main chamber via a prechamber nozzle;
- and
- a fuel injector having a plurality of spray nozzles interfacing with the main chamber of the cylinder, the plurality of spray nozzles comprising:
- a first spray nozzle with a first spray angle;
- and
- at least one second spray nozzle with a second spray angle,
- wherein the first spray angle is larger than the second spray angle, such that the first spray angle is directed towards and aligned with the prechamber nozzle, while the second spray angle is directed towards the main chamber;
- spraying fuel from the first spray nozzle at the first spray angle in a first direction towards the prechamber nozzle such that a first amount of fuel flows through the main chamber and enters the prechamber nozzle;
- and
- while spraying fuel from the first spray nozzle, spraying fuel from the at least one second spray nozzle at the second spray angle in a second direction, different than the first direction, into the main chamber.
10 more elements
Dependencies are inferred from the claim text.