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US 9,850,805 B2Granted
Prechamber ignition system
AssigneePrometheus Applied Technologies, LLC
InventorsMaria-Emmanuella Sotiropoulou, Luigi P. Tozzi
Life of this patent
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Abstract
Generally, embodiments of a pre-chamber unit having a pre-combustion chamber including one or more induction ports in a configuration which achieves flow fields and flow field forces inside the pre-combustion chamber which act to direct flame growth away quenching surface of the pre-combustion chamber.
Claims43
A method of distributing a fuel-oxidizer mixture in a pre-combustion chamber, comprising:
- providing a pre-combustion chamber comprising:
- a primary electrode and one or more ground electrodes disposed within the pre-combustion chamber, the primary electrode and the ground electrode disposed a distance apart to provide one or more electrode gaps;
- at least one induction port which communicates between an external surface and an internal surface of said pre-combustion chamber;
- and
- directing a fuel-oxidizer mixture into the pre-combustion chamber via the at least one induction port to reduce interaction of a flame kernel with an internal surface of said pre-combustion chamber;
- wherein the volume of the pre-combustion chamber is between about 1000 mm3 and about 6000 mm3 for use with fuels with energy content greater than about 800 BTU/ft3.
3 more elements
A method of distributing a fuel-oxidizer mixture in a pre-combustion chamber, comprising
- providing a pre-combustion chamber comprising:
- a primary electrode and a ground electrode disposed within the pre-combustion chamber, the primary electrode and the ground electrode disposed a distance radially apart to provide a single electrode gap;
- at least one induction port which communicates between an external surface and an internal surface of said pre-combustion chamber;
- the at least one induction port configured to aim at least one infilling stream of said fuel-oxidizer mixture at said internal surface of said pre-combustion chamber;
- and
- introducing at least one infilling stream of fuel-oxidizer mixture into the pre-combustion chamber via the at least one induction port;
- wherein the at least one induction port is configured to develop flow field forces which increase mixing of an amount of residual gases within said pre-combustion chamber with said in-filling streams to reduce temperature of said internal surface of said pre-chamber or the amount of residual gases.
4 more elements
A pre-chamber unit, comprising:
- a primary electrode and a ground electrode disposed a distance radially apart to provide a single electrode gap;
- a pre-combustion chamber which at least partially encloses said first electrode and said second electrode;
- and
- at least one induction port which communicates between an external surface and an internal surface of said pre-combustion chamber, said at least one induction port configured to direct a fuel-oxidizer mixture into the pre-combustion chamber to generate flow field forces within said pre-combustion chamber which upon ignition of a fuel-oxidizer mixture reduce the interaction of a flame kernel with said internal surface of said pre-combustion chamber;
- wherein the pre-combustion chamber has a total volume greater than about 1000 mm3 for use with fuels with energy content less than about 800 BTU/ft3.
2 more elements
Dependencies are inferred from the claim text.