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US 11,898,448 B2Granted
Hydrogen-powered opposed-piston engine
AssigneeAchates Power, Inc.
InventorFabien G. Redon
Life of this patent
Estimating the term…
Abstract
A two-stroke cycle uniflow-scavenged opposed-piston engine is configured to use hydrogen fuel. The opposed-piston engine has at least one cylinder and a pair of pistons disposed for opposed motion in a bore of the cylinder. Hydrogen fuel is injected into the cylinder early in a compression stroke of the opposed-piston engine, and is ignited in a combustion chamber formed between the pistons late in the compression stroke.
Claims22
An opposed-piston engine, comprising:
- at least one ported cylinder with a bore;
- a pair of pistons disposed for mutually opposing movements in the bore;
- an air intake channel configured to provide a flow of charge air through an intake port of the cylinder in response to movement of a first piston of the pair of pistons past the intake port;
- an exhaust channel configured to receive a flow of exhaust gas through an exhaust port of the cylinder in response to movement of a second piston of the pair of pistons past the exhaust port;
- a hydrogen fuel provisioning device configured to provide hydrogen fuel at a pressure in a range of 50 bar to 150 bar;
- at least one fuel injection device coupled to the hydrogen fuel provisioning system and configured to inject the provided hydrogen fuel directly into the cylinder bore;
- and,
- at least one ignition device configured to ignite a mixture of charge air and injected hydrogen fuel in a combustion chamber formed in the bore between end surfaces of the pair of pistons.
5 more elements
A hydrogen-fueled, two-stroke-cycle, uniflow-scavenged opposed-piston engine, comprising:
- at least one ported cylinder with a bore;
- a pair of pistons disposed for mutually opposing movements in the bore;
- an air channel configured to provide a flow of charge air through an intake port of the cylinder in response to movement of a first piston of the pair of pistons past the intake port;
- an exhaust channel configured to receive a flow of exhaust gas through an exhaust port of the cylinder in response to movement of a second piston of the pair of pistons past the exhaust port;
- means for adjusting the flow of charge air;
- a fuel provisioning device configured to provide hydrogen fuel;
- at least one fuel injection device coupled to the fuel provisioning system and configured to inject the provided hydrogen fuel directly into the cylinder bore;
- at least one ignition device configured to ignite a mixture of charge air and injected hydrogen fuel in a combustion chamber formed in the bore between end surfaces of the pair of pistons;
- and,
- a control unit coupled to the at least one fuel injection device and the means for adjusting charge air, which is configured to cause the hydrogen-fueled, two-stroke-cycle, uniflow-scavenged opposed-piston engine to combust the hydrogen fuel while operating with a lambda (λ) of 2.0<λ<2.5.
7 more elements
Dependencies are inferred from the claim text.