The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2026
Filed:
Jun. 24, 2024
Caterpillar Inc., Peoria, IL (US);
Robert Michael Mcdavid, Dunlap, IL (US);
Jonathan William Anders, Peoria, IL (US);
Diego Bernardi Bestel, Naperville, IL (US);
Chad P. Koci, Washington, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
Operating an engine includes moving a piston toward a top-dead-center position in a cylinder, and directly injecting a gaseous hydrogen fuel into the cylinder in an injection path targeting a center cone in a combustion bowl of the piston. The gaseous hydrogen fuel is impinged upon an outer cone surface, and fluids advanced upwardly along a reentrant bowl wall toward a bowl throat opening. Squished fluids are advanced from a squish volume into the reentrant bowl throat, to produce a combined mixing flow of the advanced fluids and the squished fluids around a flow axis extending circumferentially around a piston center axis. Related apparatus is also disclosed.