METHODS AND SYSTEMS FOR ENGINE STOPPING
First Claim
Patent Images
1. An engine stopping method, comprising:
- adjusting a speed of a driveline integrated starter/generator (DISG) to a desired speed that provides a desired transmission clutch oil line pressure in response to a request to stop engine rotation; and
slipping a driveline disconnect clutch in a driveline between the DISG and the engine to stop the engine at a desired position.
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Abstract
Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is stopped to a desired position via slipping a driveline disconnect clutch so that engine starting may be improved.
51 Citations
20 Claims
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1. An engine stopping method, comprising:
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adjusting a speed of a driveline integrated starter/generator (DISG) to a desired speed that provides a desired transmission clutch oil line pressure in response to a request to stop engine rotation; and slipping a driveline disconnect clutch in a driveline between the DISG and the engine to stop the engine at a desired position. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An engine stopping method, comprising:
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closing a driveline disconnect clutch in response to a request to stop engine rotation; adjusting a speed of a driveline integrated starter/generator (DISG) to a desired engine speed profile that decelerates toward zero engine speed; and opening the driveline disconnect clutch at a predetermined engine speed. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A vehicle system, comprising:
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an engine; a dual mass flywheel (DMF) including a first side mechanically coupled to the engine; a driveline disconnect clutch mechanically including a first side coupled to a second side of the dual mass flywheel; a driveline integrated starter/generator (DISG) including a first side coupled to a second side of the driveline disconnect clutch; a transmission selectively coupled to the engine via the driveline disconnect clutch; and a controller including executable instructions stored in non-transitory memory to adjust operation of the driveline disconnect clutch in response to a request to stop engine rotation. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification