Press fit turbulent jet ignition insert
AssigneeFca US LLC
InventorsDouglas A Trudeau, Kenneth L Holloway, Steven D Ognjanovski, Milorad A Kovac, Alan G Falkowski
Life of this patent
Estimating the term…
Abstract
An internal combustion engine includes an cylinder block defining at least one cylinder, a cylinder head at least partially defining a combustion chamber for each cylinder of the cylinder block, and a spark plug bore formed in the cylinder head for each cylinder, the spark plug bore connecting to the combustion chamber and configured to receive a spark plug. A turbulent jet ignition (TJI) pre-chamber insert is press-fit into the spark plug bore, and defining an internal combustion pre-chamber in fluid communication with the combustion chamber.
Claims17
An internal combustion engine, comprising:
- a cylinder block defining at least one cylinder;
- a cylinder head at least partially defining a combustion chamber for each cylinder of the cylinder block;
- a spark plug bore formed in the cylinder head for each cylinder, the spark plug bore connecting to the combustion chamber and configured to receive a spark plug;
- and
- a turbulent jet ignition (TJI) pre-chamber insert press-fit into the spark plug bore,
- wherein the TJI pre-chamber insert defines an internal combustion pre-chamber in fluid communication with the combustion chamber;
- wherein the TJI pre-chamber insert includes:
- a cylindrical body having an open end and an opposite rounded end, which extends at least partially into the combustion chamber;
- a plug and cap assembly including i) a plug configured to be inserted through the TJI pre-chamber insert open end and seated in the combustion pre-chamber, and ii) a cap configured to couple to the TJI pre-chamber insert rounded end.
A method of manufacturing a cylinder head for an internal combustion engine, the method comprising:
- providing a cylinder head at least partially defining at least one combustion chamber;
- machining valve seat pockets in each combustion chamber;
- installing a valve seat in each machined valve seat pocket;
- forming a spark plug bore in the cylinder head for each combustion chamber, the spark plug bore connecting to the combustion chamber and configured to receive a spark plug;
- and
- press-fitting a turbulent jet ignition (TJI) pre-chamber insert into the spark plug bore, wherein the TJI pre-chamber insert includes:
- a cylindrical body having an open end and an opposite rounded end, which extends at least partially into the combustion chamber;
- a plug and cap assembly including i) a plug configured to be inserted through the TJI pre-chamber insert open end and seated in the combustion pre-chamber, and ii) a cap configured to couple to the TJI pre-chamber insert rounded end.
Dependencies are inferred from the claim text.