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US 11,073,097 B1Granted
Methods and system for cold starting an engine
AssigneeFord Global Technologies, LLC
InventorsChris Paul Glugla, Garlan J. Huberts, Joseph Thomas, David Andrew Ord, Michael Damian Czekala
Life of this patent
Estimating the term…
Abstract
Systems and methods for starting and operating a direct injection engine are described. In one example, the air and fuel are injected into a pre-chamber of a cylinder of an engine while the engine is not rotating. The air and fuel are combusted in the pre-chamber to improve ignition of an air and fuel mixture in the cylinder.
Claims19
An engine operating method, comprising:
- injecting air and fuel into a pre-chamber of a cylinder;
- igniting and combusting the air and fuel in the pre-chamber via a spark plug while the cylinder is on its expansion stroke and in an engine that is not rotating;
- and
- exhausting the combusted air and fuel to the cylinder.
1 more element
A system, comprising:
- an engine;
- a cylinder;
- a pre-chamber coupled to the cylinder, the pre-chamber including a spark plug, a fuel injector, and an air inlet;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to inject fuel and air into the pre-chamber while the cylinder is on an expansion stroke in response to a request to start the engine.
2 more elements
An engine operating method, comprising:
- injecting air into a pre-chamber of a cylinder and into the cylinder via the pre-chamber during an expansion stroke, compression stroke, or exhaust stroke of the cylinder in an engine that is not rotating;
- injecting fuel into the pre-chamber after starting to inject air into the pre-chamber during the expansion stroke, compression stroke, or exhaust stroke of the cylinder in the engine that is not rotating;
- igniting and combusting the air and fuel in the pre-chamber via a spark plug during the expansion stroke, compression stroke, or exhaust stroke of the cylinder in the engine that is not rotating;
- and
- exhausting the combusted air and fuel to the cylinder.
2 more elements
Dependencies are inferred from the claim text.