Parent bore cylinder block of an opposed-piston engine
AssigneeAchates Power, Inc.
InventorsAndrew P. Perr, John J. Koszewnik, Gary A. Vrsek
Life of this patent
Estimating the term…
Abstract
A parent bore cylinder block of an internal combustion, opposed-piston engine includes cooling passages that are formed using a 3-D printed casting core. The casting core can include portions that are ceramic. The parent bore cylinder block can include multiple cylinders, each cylinder with cooling passages and turbulence inducing features in those cooling passages, particularly surrounding the central portions of the cylinders.
Claims20
A method of making a parent bore cylinder block of an opposed-piston engine, the method comprising:
- using a 3-D printing technique to make a printed hybrid casting core comprising at least one ceramic core portion and one or more sand core components, in which the printed hybrid casting core is for forming at least one cylinder having a bore and an intermediate portion situated between intake and exhaust ports of the at least one cylinder;
- creating a molding assembly for the parent bore cylinder block using the printed hybrid casting core;
- casting metal into the parent bore cylinder block using the molding assembly;
- in which at least one of the at least one ceramic core portions creates cooling features around the intermediate portion;
- and,
- removing the molding assembly.
A method of making a parent bore cylinder block of an opposed-piston engine, the method comprising:
- using a 3-D printing technique to make a printed hybrid casting core comprising at least one ceramic core portion and one or more sand core components, in which the printed hybrid casting core is for forming at least one cylinder comprising an intermediate portion containing a combustion zone of the at least one cylinder;
- creating a molding assembly for the parent bore cylinder block using the printed hybrid casting core;
- casting metal into the parent bore cylinder block using the molding assembly;
- in which the at least one of the at least one ceramic core portion creates cooling features around the intermediate portion;
- and,
- removing the molding assembly.
Dependencies are inferred from the claim text.