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US 2022/0049666 A1Published application
Methods and system for stopping an engine
AssigneeFord Global Technologies, LLC
InventorsChris Glugla, Brad A. VanDerWege
Life of this patent
Estimating the term…
Abstract
Systems and methods for stopping and starting a direct injection engine are described. In one example, the air is injected into one or more pre-chambers of engine cylinders to adjust engine pumping torque during an engine stop so that the engine may stop at a crankshaft position that facilitates direct engine starting.
Claims18
An engine operating method, comprising:
- injecting air into a pre-chamber of a cylinder and into the cylinder via the pre-chamber in response to an engine stop request, where injecting air into the pre-chamber includes adjusting an amount of air injected to the cylinder based on stopping an engine at a crankshaft position that facilitates a rocking direct engine start, wherein the crankshaft position is less than 90 crankshaft degrees of top-dead-center of a compression stroke of the cylinder.
A method of increasing torque, comprising:
- injecting air into a pre-chamber of a cylinder in response to an engine stop request, where injecting air into the pre-chamber includes adjusting an amount of air injected to the cylinder based on stopping an engine at a crankshaft position that facilitates a rocking direct engine start.
Dependencies are inferred from the claim text.