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US 11,415,083 B1Granted
Engine systems and methods
AssigneeCaterpillar Inc.
InventorsChaitanya Kavuri, Jonathan W. Anders
Life of this patent
Estimating the term…
Abstract
An engine system includes a first cylinder including a first piston, a second cylinder including a second piston, and a fuel injector fluidly connected to the first cylinder. The first cylinder is a combustion cylinder, and the second cylinder is an expansion cylinder. The second cylinder is fluidly connected to the first cylinder when the first piston is in at least one position in the first cylinder. The fuel injector is configured to deliver hydrogen gas to the first cylinder.
Claims20
An engine system, comprising:
- a first cylinder including a first piston, wherein the first cylinder is a combustion cylinder;
- a second cylinder including a second piston, wherein the second cylinder is an expansion cylinder, and wherein the second cylinder is fluidly connected to the first cylinder when the first piston is in at least one position in the first cylinder;
- and
- a fuel injector fluidly connected to the first cylinder, wherein the fuel injector is configured to deliver hydrogen gas to the first cylinder.
1 more element
A hydrogen powered engine system, comprising:
- a crankshaft;
- a first cylinder including a first piston coupled to the crankshaft, wherein the first cylinder is a combustion cylinder;
- a second cylinder including a second piston coupled to the crankshaft, wherein the second cylinder is an expansion cylinder, and wherein the second cylinder is fluidly connected to the first cylinder via a gas crossover passage that allows combustion products to pass from the first cylinder to the second cylinder when the first piston is in at least one position in the first cylinder;
- a fuel source containing a supply of hydrogen gas;
- and
- a fuel injector fluidly connected to the fuel source and to the first cylinder, wherein the fuel injector is configured to deliver the hydrogen gas to the first cylinder.
3 more elements
A hydrogen powered engine system, comprising:
- a first cylinder including a first piston, wherein the first cylinder is a combustion cylinder;
- a second cylinder including a second piston, wherein the second cylinder is an expansion cylinder, and wherein the second cylinder is fluidly connected to the first cylinder;
- a fuel source containing a supply of hydrogen gas;
- and
- a fuel injector fluidly connected to the fuel source and to the first cylinder, wherein the fuel injector is configured to deliver the hydrogen gas to the first cylinder for a duration between approximately 15° crank angle and approximately 25° crank angle.
2 more elements
Dependencies are inferred from the claim text.