US 12,228,068 B1
Predictive model-based spark control
Luigi P. Tozzi, Fort Collins, CO (US); and Maria-Emmanuella Sotiropoulou, Fort Collins, CO (US)
Assigned to Prometheus Applied Technologies, LLC, Fort Collins, CO (US)
Filed by Prometheus Applied Technologies, LLC, Fort Collins, CO (US)
Filed on Aug. 2, 2024, as Appl. No. 18/793,312.
Application 18/793,312 is a continuation in part of application No. 18/732,374, filed on Jun. 3, 2024.
This patent is subject to a terminal disclaimer.
Int. Cl. F02B 19/16 (2006.01); F02B 19/12 (2006.01)
CPC F02B 19/12 (2013.01) [F02B 19/16 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A method of controlling the start of combustion in an internal combustion engine, comprising:
providing a prechamber comprising:
an external surface and an internal surface enclosing a prechamber volume;
one or more electrode gaps between a corresponding one or more pairs of electrodes;
one or more rotational ports communicating between the external surface and the internal surface and including a port axis that defines an index angle, a rotational offset and a penetration angle; and
one or more scavenging ports communicating between a main combustion chamber and the prechamber volume and located between the one or more rotational ports and the one or more electrode gaps;
introducing a fuel-air mixture into the prechamber volume via the one or more rotational ports to create a spiral flow in the prechamber volume;
introducing a flow from the main combustion chamber via the one or more scavenging ports to generate a radial flow in the prechamber;
wherein the combination of the spiral flow and the radial flow generates a flow substantially orthogonal to the one or more electrode gaps to achieve a consistent laminar flow in the electrode gaps;
introducing a spark across at least one of the one or more electrodes gaps to ignite the fuel-air mixture.