METHODS AND SYSTEMS FOR OPERATING A DRIVELINE DISCONNECT CLUTCH RESPONSIVE TO ENGINE OPERATING CONDITIONS
First Claim
Patent Images
1. A method, comprising:
- rotating a transmission input shaft at a first speed;
operating an engine in a speed control mode, the engine rotating at a second, different, speed;
adjusting a transfer function in response to a torque estimate based on engine conditions; and
operating a driveline disconnect clutch in response to the transfer function.
1 Assignment
0 Petitions
Accused Products
Abstract
Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a driveline disconnect clutch transfer function may be adapted in response to engine operating conditions during closing of the driveline disconnect clutch.
-
Citations
20 Claims
-
1. A method, comprising:
-
rotating a transmission input shaft at a first speed; operating an engine in a speed control mode, the engine rotating at a second, different, speed; adjusting a transfer function in response to a torque estimate based on engine conditions; and operating a driveline disconnect clutch in response to the transfer function. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A driveline disconnect clutch adaptation method, comprising:
-
rotating a transmission input shaft at a first speed; operating an engine in a speed control mode and rotating the engine at a second speed different from the first speed; storing an engine torque output value while a driveline disconnect clutch is open; incrementally closing the driveline disconnect clutch; and adjusting a transfer function in response to a difference between a torque estimate based on engine operating conditions and a torque estimate based on the transfer function; and operating the driveline disconnect clutch in response to the transfer function. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
-
-
16. A vehicle system, comprising:
-
an engine; a dual mass flywheel 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 an estimate of torque transferred through the driveline disconnect clutch in response to an engine torque estimate, and operate the driveline disconnect clutch in response to the estimate of torque transferred through the driveline disconnect clutch. - View Dependent Claims (17, 18, 19, 20)
-
Specification