Abstract: A cylinder bore liner insert configured to be cast in an internal combustion engine block includes an additive manufactured liner wall formed during an additive manufacturing process and having an inner surface, an outer surface, and an upper surface configured to be operably associated with a cylinder head, wherein the inner surface at least partially defines a cylinder bore configured to receive a piston therein. A liner water jacket is defined internally within the additive manufactured liner wall during the additive manufacturing process. The liner water jacket at least partially surrounds the cylinder bore to provide cooling thereto via a flow of coolant within the liner water jacket. A plurality of coolant ports are formed in the upper surface and configured to enable flow of coolant between the liner water jacket and the cylinder head.

Abstract: The invention concerns a method for evaluating port design of an engine cylinder head by viewing patterns of fluid flow therefrom into a transparent chamber simulating an engine combustion chamber. A permeable member in the chamber simulates the position of a piston in a related engine and allows a continuous flow to be generated through the chamber. Lightweight members are deposited within the chamber to be visually observed as they move with the fluid flow in the chamber.

Abstract: The invention provides an apparatus which simulates fluid flow patterns within a chamber. The apparatus includes a chamber having a mechanism to enable viewing of the inside of the chamber. A simulated head member is associated with the chamber to enable fluid to pass through the member into the chamber. A mechanism to exhaust fluid from the chamber is also associated therewith. A member is positioned within the chamber to simulate a piston position within the chamber. Lightweight members are within the chamber to visually define the fluid flow patterns within the chamber. Also, a method of evaluating cylinder head port, combustion chamber, and valve head designs is disclosed.