公开(公告)号：US11415083B1

公开(公告)日：2022-08-16

申请号：US17371794

申请日：2021-07-09

Applicant: Caterpillar Inc.

Inventor： Chaitanya Kavuri ,  Jonathan W. Anders

IPC: F02M21/02 ,  F02M26/34 ,  F02M25/03 ,  F01N3/20 ,  F02B75/18 ,  F02B15/00

Abstract: An engine system includes a first cylinder including a first piston, a second cylinder including a second piston, and a fuel injector fluidly connected to the first cylinder. The first cylinder is a combustion cylinder, and the second cylinder is an expansion cylinder. The second cylinder is fluidly connected to the first cylinder when the first piston is in at least one position in the first cylinder. The fuel injector is configured to deliver hydrogen gas to the first cylinder.