Fuel quantity modulation in pilot ignited engines
AssigneeDresser, Inc.
InventorAndrew May
Life of this patent
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Abstract
An engine system includes a first fuel regulator adapted to control an amount of a first fuel supplied to the engine, a second fuel regulator adapted to control an amount of a second fuel supplied to the engine concurrently with the first fuel being supplied to the engine, and a controller coupled to at least the second fuel regulator. The controller is adapted to determine the amount of the second fuel supplied to the engine in a relationship to the amount of the first fuel supplied to the engine to operate in igniting the first fuel at a specified time in steady state engine operation and adapted to determine the amount of the second fuel supplied to the engine in a manner different from the relationship at steady state engine operation in transient engine operation.
Claims44
An engine system comprising:
- an internal combustion engine;
- a first fuel regulator adapted to control an amount of a first fuel supplied to the engine;
- a second fuel regulator adapted to control an amount of a second fuel supplied to the engine concurrently with the first fuel being supplied to the engine;
- and
- a controller coupled to the second fuel regulator and adapted to signal the second fuel regulator during steady state engine operation to adjust the amount of the second fuel supplied to the engine in a relationship to the amount of the first fuel supplied to the engine to operate in igniting the first fuel at a specified time and adapted to signal the second fuel regulator during transient engine operation to adjust the amount of the second fuel supplied to the engine in manner different from the relationship at steady state engine operation.
An engine controller comprising a processor configured to perform operations comprising:
- determine an amount of a second fuel for supplying to the engine concurrently with a first fuel that is being supplied to the engine in a steady state engine operating condition in relation to the amount of the first fuel supplied to the engine to ignite the first fuel at a specified time;
- and
- determine an amount of the second fuel for supplying to the engine concurrently with the first fuel in a transient engine operating condition in a manner different from the relationship at steady state engine operation.
A method of supplying fuel to an engine comprising:
- determining an amount of a second fuel to supply to the engine concurrently with a first fuel that is being supplied to the engine in steady state engine operation in relation to the first fuel to ignite the first fuel at a specified timing;
- and
- determining the amount of the second fuel to supply to the engine concurrently with the first fuel in transient engine operation in a manner different from the relationship at steady state engine operation.
Dependencies are inferred from the claim text.