US 12,140,067 B2
Cylinder head water jacket design
Xiling Zhou, Hubei Province (CN); Darrin Ferry, Columbus, IN (US); and Vijaysai Karuppiah Kumareshan, Columbus, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by CUMMINS INC., Columbus, IN (US)
Filed on Oct. 25, 2023, as Appl. No. 18/383,770.
Prior Publication US 2024/0141818 A1, May 2, 2024
Int. Cl. F01P 3/02 (2006.01); F02F 1/40 (2006.01)
CPC F01P 3/02 (2013.01) [F02F 1/40 (2013.01); F01P 2003/024 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A water jacket for a cylinder head of an engine system, the water jacket comprising: a water jacket lower portion comprising a plurality of water jacket lower portion coolant inlets and a plurality of water jacket lower portion coolant paths, the water jacket lower portion in coolant receiving communication with the plurality of water jacket lower portion coolant inlets; and a water jacket upper portion connected to and in coolant receiving communication with the water jacket lower portion, the water jacket upper portion comprising a first coolant rail, a second coolant rail, and a water jacket upper portion coolant outlet; wherein a first one of the plurality of water jacket lower portion coolant paths surround sat least a portion of an exhaust port of the cylinder head and comprises at least one segment configured to allow the coolant first to flow toward an intake side before flowing back toward an exhaust side of the water jacket lower portion, wherein a second one of the plurality of water jacket lower portion coolant paths is positioned between two intake ports of the cylinder head, and wherein the first one of the plurality of water jacket lower portion coolant paths receives coolant from one of the plurality of water jacket lower portion coolant inlets positioned on the exhaust side and provides coolant to a water jacket lower portion connection positioned on the exhaust side, the water jacket lower portion connection being an outlet in fluid providing communication with the water jacket upper portion, and wherein the first one of the plurality of coolant jacket lower portion coolant paths decreases in thickness along a direction of flow from the water jacket lower portion coolant inlet positioned on the exhaust side to the water jacket lower portion connection.