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公开(公告)号：US11933233B1
公开(公告)日：2024-03-19
申请号：US18192122
申请日：2023-03-29
Applicant: SAUDI ARABIAN OIL COMPANY
Inventor： Praveen Kumar
CPC classification number: F02D13/0242 , F02D13/06 , F02D17/02 , F02D23/00
Abstract: An engine includes multiple cylinders having at least one deactivated cylinder and at least one activated cylinder, multiple intake valves, wherein each intake valve is positioned in an intake port of each of the cylinders, multiple exhaust valves, wherein each exhaust valve is positioned in an exhaust port of each of the cylinders, and an exhaust pulse valve positioned along an exhaust main passage fluidly connected between a turbine inlet to a turbocharger and the exhaust valves. Methods are disclosed that include deactivating the deactivated cylinders and operating the activated cylinders, while the exhaust pulse valve is actuated by fully opening the exhaust pulse valve when at least one of the multiple exhaust valves to the at least one activated cylinder is open and fully closing the exhaust pulse valve when each of the multiple exhaust valves to the at least one activated cylinder is closed.
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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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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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