公开(公告)号：US20240141850A1

公开(公告)日：2024-05-02

申请号：US18050330

申请日：2022-10-27

Applicant: ARAMCO SERVICES COMPANY

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

IPC: F02D41/30 ,  F02D41/00 ,  F02D41/14 ,  F02P5/15

CPC classification number: F02D41/3064 ,  F02D41/0057 ,  F02D41/1475 ,  F02P5/1504 ,  F02D2200/101

Abstract: A method of operating an engine includes operating the engine in first and second engine operating map regions by performing passive jet ignition combustion with a first stoichiometric fuel mixture and a first volume of residual gas. The engine is operated in a third engine operating map region by performing turbulent jet controlled compression ignition (TJCCI) with an ultra lean fuel mixture and a first volume of cooled exhaust gas recirculation, a fourth engine operating map region by performing passive jet ignition combustion with a third stoichiometric fuel mixture and a second volume of cooled exhaust gas recirculation, and a fifth engine operating map region, characterized by shutting off the engine. The engine is operated in a mode transition region between the second, third, and fourth engine operating map regions by performing passive jet ignition combustion with a second stoichiometric fuel mixture and a second volume of residual gas.

公开(公告)号：US11959435B1

公开(公告)日：2024-04-16

申请号：US18050330

申请日：2022-10-27

Applicant: ARAMCO SERVICES COMPANY

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

IPC: F02D41/30 ,  F02B19/12 ,  F02D41/00 ,  F02D41/14 ,  F02P5/04 ,  F02P5/15

CPC classification number: F02D41/3064 ,  F02B19/12 ,  F02D41/0057 ,  F02D41/1475 ,  F02P5/045 ,  F02P5/1504 ,  F02P5/1516 ,  F02D2200/1002 ,  F02D2200/101

Abstract: A method of operating an engine includes operating the engine in first and second engine operating map regions by performing passive jet ignition combustion with a first stoichiometric fuel mixture and a first volume of residual gas. The engine is operated in a third engine operating map region by performing turbulent jet controlled compression ignition (TJCCI) with an ultra lean fuel mixture and a first volume of cooled exhaust gas recirculation, a fourth engine operating map region by performing passive jet ignition combustion with a third stoichiometric fuel mixture and a second volume of cooled exhaust gas recirculation, and a fifth engine operating map region, characterized by shutting off the engine. The engine is operated in a mode transition region between the second, third, and fourth engine operating map regions by performing passive jet ignition combustion with a second stoichiometric fuel mixture and a second volume of residual gas.