Methods and systems for engine stopping
First Claim
Patent Images
1. A vehicle system, comprising:
- 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, and additional instructions to open the driveline disconnect clutch at a predetermined engine speed.
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Accused Products
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.
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Citations
16 Claims
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1. 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, and additional instructions to open the driveline disconnect clutch at a predetermined engine speed. - View Dependent Claims (2, 3, 4, 5, 6)
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7. 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, the transmission including an output shaft and a case; and a controller including executable instructions stored in non-transitory memory to close the driveline disconnect clutch when the driveline disconnect clutch is open in response to a request to stop engine rotation. - View Dependent Claims (8, 9, 10, 11)
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12. 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, the transmission including an output shaft and a case; and a controller including executable instructions stored in non-transitory memory to determine a desired transmission oil line pressure and rotate the DISG at a speed to provide the desired transmission oil line pressure in response to a request to stop engine rotation. - View Dependent Claims (13, 14, 15, 16)
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Specification