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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
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.
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公开(公告)号：US20250035057A1
公开(公告)日：2025-01-30
申请号：US18917193
申请日：2024-10-16
Applicant: SAUDI ARABIAN OIL COMPANY
Inventor： Yu Zhang , Praveen Kumar , Anqi Zhang , Nayan Engineer
Abstract: A hydrogen-diesel dual-fuel engine that includes an engine block, where the engine block includes a cylinder outfitted with at least two hydrogen fuel injectors and a piston. The engine further includes an air-handling system that includes an intake manifold, an intake pipe, an exhaust pipe, a variable geometry turbocharger, and an exhaust gas recirculation system configured to recirculate exhaust gases from the exhaust pipe to the intake manifold. The engine further includes a two-step camshaft, where the two-step camshaft is configured with the air-handling system for exhaust re-breathing and late intake valve closing, and a port fuel injector system that provides hydrogen gas to the at least two hydrogen fuel injectors. The engine further includes a diesel injector, a common-rail fuel injection system, a plurality of sensors, and a controller configured to receive engine data from the plurality of sensors and to control operation of the hydrogen-diesel dual-fuel engine.
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公开(公告)号：US20250035056A1
公开(公告)日：2025-01-30
申请号：US18917043
申请日：2024-10-16
Applicant: SAUDI ARABIAN OIL COMPANY
Inventor： Yu Zhang , Praveen Kumar , Anqi Zhang , Nayan Engineer
Abstract: A hydrogen-diesel dual-fuel engine that includes an engine block, where the engine block includes a cylinder outfitted with at least two hydrogen fuel injectors and a piston. The engine further includes an air-handling system that includes an intake manifold, an intake pipe, an exhaust pipe, a variable geometry turbocharger, and an exhaust gas recirculation system configured to recirculate exhaust gases from the exhaust pipe to the intake manifold. The engine further includes a two-step camshaft, where the two-step camshaft is configured with the air-handling system for exhaust re-breathing and late intake valve closing, and a port fuel injector system that provides hydrogen gas to the at least two hydrogen fuel injectors. The engine further includes a diesel injector, a common-rail fuel injection system, a plurality of sensors, and a controller configured to receive engine data from the plurality of sensors and to control operation of the hydrogen-diesel dual-fuel engine.
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公开(公告)号：US12152547B1
公开(公告)日：2024-11-26
申请号：US18338650
申请日：2023-06-21
Applicant: SAUDI ARABIAN OIL COMPANY
Inventor： Yu Zhang , Praveen Kumar , Anqi Zhang , Nayan Engineer
Abstract: A hydrogen-diesel dual-fuel engine that includes an engine block, where the engine block includes a cylinder outfitted with at least two hydrogen fuel injectors and a piston. The engine further includes an air-handling system that includes an intake manifold, an intake pipe, an exhaust pipe, a variable geometry turbocharger, and an exhaust gas recirculation system configured to recirculate exhaust gases from the exhaust pipe to the intake manifold. The engine further includes a two-step camshaft, where the two-step camshaft is configured with the air-handling system for exhaust re-breathing and late intake valve closing, and a port fuel injector system that provides hydrogen gas to the at least two hydrogen fuel injectors. The engine further includes a diesel injector, a common-rail fuel injection system, a plurality of sensors, and a controller configured to receive engine data from the plurality of sensors and to control operation of the hydrogen-diesel dual-fuel engine.
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