MUMBAI, India, June 26 -- Intellectual Property India has published a patent application (202544120572 A) filed by Cummins Inc. on December 02, 2025, for A Piston For Reciprocating Within A Cylinder In An Internal Combustion Engine.
Inventors include Sujith Sukumaran; Ramachandraiah Krishna Chaitanya Kalvakala; and Aswin Karthik Ramesh.
The application for the patent was published on June 19, 2026, under issue no. 25/2026.
Abstract: A piston having a piston body with an upper end opposite a lower end, between which a center axis extends. The piston body includes a piston bowl having a piston bowl surface with a half section profile that includes a central bottom portion and a target side wall that extends between first and second separation cliffs. The central bottom portion extends radially at a central slope from the center axis to the first separation cliff. The target side wall extends at a slope that is different from the central slope. The target side wall receives fuel from a fuel injector at a spray angle that avoids contact with the first separation cliff for better fuel to air mixing to delay peak of combustion rate. The second separation cliff extends at a slope that directs the fuel plume away from and detaches from the second separation cliff for peak combustion. Fig. 1
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