Purge device for passive or active prechambers
AssigneeSaudi Arabian Oil Company
InventorNayan Engineer
Life of this patent
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Abstract
A purge system includes a prechamber in fluid communication with a main chamber of an engine cylinder, and a port divider having a dividing wall that creates a plurality of passages within an intake port of the main chamber. The purge system further includes an outer tube fixed between a first passage of the port divider and the prechamber, and an inner tube rotatable within the outer tube. The outer tube includes apertures along a wall of the outer tube that fluidly connect the outer tube with the first passage of the port divider and with the prechamber. The inner tube includes slots along a wall of the inner tube that to fluidly connect the first passage of the port divider and the prechamber when the slots align with the apertures.
Claims20
A purge system comprising:
- a prechamber in fluid communication with a main chamber of an engine cylinder, the main chamber comprising an intake port;
- a port divider comprising a dividing wall configured to create a plurality of passages within the intake port;
- an outer tube fixed between a first passage of the port divider and the prechamber, the outer tube including apertures along a wall of the outer tube configured to fluidly connect the outer tube with the first passage of the port divider and with the prechamber;
- and
- an inner tube rotatable within the outer tube, the inner tube comprising slots along a wall of the inner tube configured to fluidly connect the first passage of the port divider and the prechamber when the slots align with the apertures.
A method comprising:
- rotating an inner tube within an outer tube, the outer tube fixed between a prechamber in fluid communication with a main chamber of an engine cylinder and a port divider comprising a dividing wall configured to create a plurality of passages within an intake port of the main chamber;
- aligning slots of the inner tube with apertures of the outer tube, thereby fluidly connecting a first passage of the port divider and the prechamber;
- purging the prechamber by transporting fluid from an intake port of the main chamber to the prechamber through the first passage of the port divider;
- and
- misaligning the slots of the inner tube and the apertures of the outer tube by rotating the inner tube within the outer tube, thereby preventing the fluid from entering the prechamber.
Dependencies are inferred from the claim text.