Gaseous fuel systems and controls
AssigneeCummins Inc.
InventorsDonald J. Benson, Ahmad M. Sabri
Life of this patent
Estimating the term…
Abstract
A gaseous fueling system includes a fuel rail in fluid communication with an injector and a combustion chamber in fluid communication with the injector. An electronic controller opiates the injector perform an injection of gaseous fuel to the combustion chamber, obtaining a pressure measurement indicating a pressure of gaseous fuel in the rail during the operating, determines a upper value of the pressure measurement and a lower value of the pressure measurement, calculates a difference between the upper value of the pressure measurement and the lower value of the pressure measurement, calculates an injected fuel quantity estimate using the difference, and operates the gaseous fueling system using the injected fuel quantity estimate.
Claims21
A process of operating a gaseous fueling system including a fuel rail in fluid communication with a gaseous fuel injector and a combustion chamber in fluid communication with the gaseous fuel injector, the process comprising:
- operating the gaseous fuel injector perform an injection of gaseous fuel to the combustion chamber;
- obtaining a pressure measurement indicating a pressure of gaseous fuel in the rail during the operating;
- determining an upper value of the pressure measurement and a lower value of the pressure measurement;
- calculating a difference between the upper value of the pressure measurement and the lower value of the pressure measurement;
- calculating an injected fuel quantity estimate using the difference;
- and
- operating the gaseous fueling system using the injected fuel quantity estimate.
A system comprising:
- an electronic control system in operative communication with a gaseous fueling system including a fuel rail in fluid communication with a gaseous fuel injector and a combustion chamber in fluid communication with the gaseous fuel injector, the electronic control system being configured to:
- operate the gaseous fuel injector perform an injection of gaseous fuel to the combustion chamber;
- obtain a pressure measurement indicative of pressure of gaseous fuel in the rail during operation of the gaseous fuel injector to perform the injection;
- determine an upper value of the pressure measurement and a lower value of the pressure measurement;
- calculate a difference between the upper value of the pressure measurement and the lower value of the pressure measurement;
- calculate an injected fuel quantity estimate using the difference;
- and
- operate the gaseous fueling system using the injected fuel quantity estimate.
A system comprising:
- an internal combustion engine including plurality of cylinders arranged in an in-line configuration;
- a first fuel rail configured to received gaseous fuel from a gaseous fuel source and to provide gaseous fuel to a first plurality of gaseous fuel injectors;
- and
- a second fuel configured to received gaseous fuel from the gaseous fuel source and to provide gaseous fuel to a second plurality of gaseous fuel injectors, the second fuel rail being at least one of physically separated and divided from the first fuel rail;
- wherein the first plurality of gaseous fuel injectors are configured to inject fuel to a first subset of the plurality of cylinders and the second plurality of gaseous fuel injectors are configured to inject fuel to a second subset of the plurality of cylinders.
-27. (canceled)
Dependencies are inferred from the claim text.