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US 12,030,480 B2Granted
Systems and methods to coordinate clunk and shuffle management with engine starts in MHT drivetrains
AssigneeFord Global Technologies, LLC
InventorsMaruthi Ravichandran, Judhajit Roy, Jason Meyer, Sassan Farahmand, Mary Catherine Farmer, Fazal Syed
Life of this patent
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Abstract
Systems and methods for starting an internal combustion engine of a hybrid vehicle are presented. In one example, the internal combustion is started via closing a driveline disconnect clutch and limiting a torque output rate of an electric machine so that vehicle speed may increase continuously without decreasing during engine cranking and run-up periods.
Claims19
A vehicle operating method, comprising:
- constraining a rate of increase of a torque output of an electric machine via a controller during engine cranking to a minimum of a first torque increase rate and a second torque increase rate.
A system, comprising:
- an internal combustion engine;
- an electric machine;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to constrain a rate of increase of a torque output of the electric machine during engine run-up to a minimum of a first torque increase rate and a second torque increase rate.
1 more element
A vehicle operating method, comprising:
- constraining a rate of increase of a torque output of an electric machine via a controller such that a speed of a vehicle increases without decreasing during engine cranking and engine run-up of an engine start, and where the engine start includes closing a driveline disconnect clutch, where constraining the rate of increase of the torque output of the electric machine includes constraining the rate of increase of the torque output of the electric machine during engine cranking to a minimum of a first torque increase rate and a second torque increase rate.
Dependencies are inferred from the claim text.