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US 11,400,913 B2Granted
Method and system for starting an engine
AssigneeFord Global Technologies, LLC
InventorsCorey James Blue, Scott James Thompson, Kendrick Morrison, Scott Patrick Ries, Steve Michael Cicala, Kurt Howard Nickerson
Life of this patent
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Abstract
A method and system for operating a vehicle that includes a driveline disconnect clutch and a step-ratio transmission is described. In one example, the method includes shifting the step-ratio transmission to neutral and accelerating an engine to an expected input shaft speed of the step-ratio transmission via applying full output capacity of an electric machine to the engine.
Claims20
A vehicle operating method, comprising:
- stopping rotation of an engine via a controller in response to vehicle operating conditions;
- and
- in response to request for a power-on downshift of a transmission, shifting the transmission to neutral and rotating the engine via an integrated starter/generator.
A vehicle system, comprising:
- an engine;
- a driveline disconnect clutch coupled to the engine;
- an electric machine coupled to the driveline disconnect clutch;
- a transmission including a plurality of gear clutches and gears;
- and
- one or more controllers including executable instructions stored in non-transitory memory to accelerate the engine to an expected speed of an input shaft of the transmission, and additional executable instructions to fully close an on-coming clutch of the transmission in response to the engine being within a threshold speed of the expected speed of the input shaft of the transmission.
3 more elements
A vehicle operating method, comprising:
- starting an engine via a controller during a first transmission gear shift via partially closing a driveline disconnect clutch before fully closing a first transmission gear shift on-coming clutch;
- and
- starting an engine during a second transmission gear shift via fully closing a driveline disconnect clutch before fully closing a second transmission gear shift on-coming clutch.
Dependencies are inferred from the claim text.