公开(公告)号：US11905900B1

公开(公告)日：2024-02-20

申请号：US18066645

申请日：2022-12-15

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Andrew Baur ,  Xin Yu ,  Anqi Zhang ,  David Cleary

IPC: F02D41/02 ,  F02P9/00 ,  F01N3/20 ,  F02D41/30

CPC classification number: F02D41/0255 ,  F01N3/204 ,  F01N3/2013 ,  F01N3/2033 ,  F02D41/3017 ,  F02D41/3076 ,  F02P9/002 ,  F01N3/2006 ,  F01N2610/03

Abstract: A motor system includes an engine having one or more cylinders, an electronic control unit, an exhaust treatment system in fluid connection with and downstream of the one or more cylinders. The exhaust treatment system includes an exhaust line, a combustion zone downstream, a combustion ignition source in the combustion zone, a catalyst downstream of an in thermal communication with the combustion zone. A method of heating a catalyst during an engine cold start and a method of initiating regular operating conditions of an engine having one or more cylinders are also described.

公开(公告)号：US11828220B1

公开(公告)日：2023-11-28

申请号：US18148842

申请日：2022-12-30

Applicant: SAUDI ARABIAN OIL COMPANY

Inventor： Yu Zhang ,  Nayan Engineer ,  David Cleary

IPC: F02B19/14 ,  F02B19/12 ,  F02B43/10

CPC classification number: F02B19/14 ,  F02B19/12 ,  F02B43/10

Abstract: The present disclosure is directed toward an engine system and a multi-mode combustion method for an internal combustion engine using hydrogen as a fuel. The engine system comprises a combustion system including a step-lipped piston bowl, a cover opposing the piston bowl, a hydrogen direct injector, and a radially asymmetrical pre-chamber partially opposite the lip of the piston bowl. The multi-mode combustion method includes injecting hydrogen and air a first time into the combustion system through the hydrogen direct injector, and jet igniting the fuel-air mixture in the combustion system. The injecting occurs during an intake stroke at low loads, and during a compression stroke at medium and high loads, Injecting hydrogen and air into the combustion system a second time via the hydrogen direct injector occurs either during or after jet-igniting, the hydrogen and air being at least partially ignited by compression.