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US 10,352,228 B2Granted
Liquid and gaseous multi-fuel compression ignition engines
AssigneeSturman Digital Systems, LLC
InventorOded Eddie Sturman
Life of this patent
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Abstract
Methods of operation of liquid and gaseous multi-fuel compression ignition engines that may be operated on a gaseous fuel or a liquid fuel, or a combination of both a gaseous fuel and a liquid fuel at the same time and in some embodiments, in the same combustion event. Various embodiments are disclosed.
Claims25
A method of operating a compression ignition engine having at least one combustion cylinder and at least one compression cylinder, wherein the combustion cylinder includes a liquid fuel injector and a gaseous fuel injector for providing a gaseous fuel and air mixture to the engine, the method comprising:
- adding gaseous fuel to the combustion cylinder during an intake stroke of the engine;
- adding air to the combustion cylinder to form the gaseous fuel and air mixture during a compression stroke of the engine;
- adding additional air supplied by the compression cylinder to the combustion cylinder during the compression stroke of the engine in order to increase an effective compression ratio of the combustion cylinder;
- compressing the gaseous fuel and air mixture and the additional air to obtain compression ignition when a piston in the combustion cylinder is at or near a top dead center position.
1 more element
Dependencies are inferred from the claim text.