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US 2019/0195151 A1Published application
Multi-fuel engine system
AssigneeGe Global Sourcing LLC
InventorsPaul Lloyd Flynn, Aninda Bhattacharya, Ganesasubramanian Murugesan, Milan Palinda Karunaratne, Daniel Cullen
Life of this patent
Estimating the term…
Abstract
Various methods and systems are provided for an engine capable of receiving liquid and gaseous fuel. In one example, cylinder misfire may be identified based on a misfire monitor. The misfire monitor may detect misfire based on signals from a crankshaft sensor.
Claims11
-10. (canceled)
A system, comprising:
- an engine having a plurality of cylinders, the engine configured to operate with at least a first fuel and a second fuel;
- a plurality of fuel injectors to inject the first fuel to the plurality of cylinders;
- and
- a controller configured to:
- when operating under a tuning mode, operate the engine with both the first fuel and the second fuel and determine a minimum open duration for each of the plurality of injectors that sustains combustion;
- and
- when operating under a second fuel mode, open each injector at its determined minimum open duration to initiate combustion,
- where the minimum open duration for each of the plurality of injectors is determined based on a misfire monitor that determines cylinder misfire based on signals from a crankshaft speed sensor.
5 more elements
A system comprising:
- an engine having a plurality of cylinders coupled to a crankshaft;
- a crankshaft speed sensor;
- and
- a controller configured to:
- measure half-order torsional vibration of the engine based on signals from the crankshaft speed sensor;
- determine a coefficient of variation (COV) of the plurality of cylinders based on the measured half-order torsional vibration;
- and
- adjust fueling duration to one or more of the plurality of cylinders based on the COV.
5 more elements
Dependencies are inferred from the claim text.