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US 11,603,818 B1Granted
Methods and system for preparing an engine for starting
AssigneeFord Global Technologies, LLC
InventorsRani Kiwan, Chris Glugla
Life of this patent
Estimating the term…
Abstract
Systems and methods for preparing an engine for a cold start are described. In one example, the air is injected into one or more pre-chambers of engine cylinders in response to an engine start request so that one or more cylinders may be heated before the engine is started. The engine may or may not be rotated while air is being injected to pre-chambers of engine cylinders.
Claims20
A method for operating an engine, comprising:
- activating a compressor and transferring heated air from a first cylinder to a second cylinder via opening a first air injector in the first cylinder and opening a second air injector in the second cylinder in response to an engine start request.
A system, comprising:
- an engine including a first cylinder and a second cylinder, a first pre-chamber coupled to the first cylinder, the first pre-chamber including a first spark plug and a first air injector, a second pre-chamber coupled to the second cylinder, the second pre-chamber including a second spark plug and a second air injector;
- an electric machine;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to rotate the engine via the electric machine and open the first air injector and open the second air injector while not supplying fuel to the first cylinder and the second cylinder.
1 more element
An engine operating method, comprising:
- rotating an engine without supplying fuel to the engine during a cycle of the engine via an electric machine and injecting air into a pre-chamber of a first cylinder of the engine during the cycle in response to a request to start the engine.
Dependencies are inferred from the claim text.