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US 12,704,098 B2Granted
System and method for operating an engine
AssigneeFord Global Technologies, LLC
InventorsThomas Leone, Aed Dudar
Life of this patent
Estimating the term…
Abstract
System and methods for an internal combustion engine are described. In one example, the internal combustion engine includes one or more engine cylinders having igniters that include a pre-chamber. One or more of the engine cylinders may be operated in a skip-fire mode if a cylinder misfires or if the internal combustion engine is cold started.
Claims18
An engine system, comprising:
- an internal combustion engine;
- a plurality of cylinders, each of the plurality of cylinders including a first igniter having a pre-chamber;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to operate the plurality of cylinders of the internal combustion engine in skip-fire mode in response to a cold start of the internal combustion engine,
- where the skip-fire mode includes, for each of the plurality of cylinders, alternating between not combusting fuel and combusting fuel every sequential engine cycle, and
- where the plurality of cylinders are all operated in the skip-fire mode at a same time for multiple engine cycles.
3 more elements
An engine operating method, comprising:
- operating a plurality of engine cylinders each with an igniter that includes a pre-chamber in skip-fire mode in response to cold starting an engine,
- where the plurality of engine cylinders are simultaneously operated in the skip-fire mode, and
- where the skip-fire mode includes, for each of the plurality of engine cylinders, alternating between not combusting fuel and combusting fuel every sequential engine cycle, and
- where the plurality of engine cylinders are all operated in the skip-fire mode at a same time for multiple engine cycles.
1 more element
An engine system, comprising:
- an internal combustion engine;
- a plurality of cylinders of the internal combustion engine, the plurality of cylinders including a cylinder with a first igniter and having a pre-chamber;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to:
- detect one or more misfires in the cylinder of the plurality of cylinders, and
- operate only the cylinder in which the one or more misfires were detected of the plurality of cylinders of the internal combustion engine in skip-fire mode in response to detecting the one or more misfires in the cylinder;
- and
- detect a cold start of the internal combustion engine, and
- responsive to the cold start, operate the plurality of cylinders of the internal combustion engine in skip-fire mode,
- where the skip-fire mode includes, for each of the plurality of cylinders, alternating between not combusting fuel and combusting fuel every sequential engine cycle, and
- where the plurality of cylinders are all operated in the skip-fire mode at a same time for multiple engine cycles.
8 more elements
Dependencies are inferred from the claim text.