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US 2022/0205504 A1Published application
Control and diagnostic method for a differential system
AssigneeDana Heavy Vehicle Systems Group, LLC
InventorPerry M. PAIELLI
Life of this patent
Estimating the term…
Abstract
Methods and systems for a differential assembly are provided herein. In one example, a diagnostic method includes generating a clutch fault according to a variance between an initial engagement position and a lock point position of a clutch motor that occur during engagement of an interaxle differential (IAD) locking clutch coupled to the clutch motor. In the IAD system, an actuation assembly is coupled to the clutch motor and the IAD locking clutch.
Claims20
A method, comprising:
- generating a clutch fault according to a variance between an initial engagement position and a lock point position of a clutch motor that occur during engagement of an interaxle differential (IAD) locking clutch coupled to the clutch motor;
- and
- activating a clutch fault indicator when the clutch fault is generated;
- wherein an actuation assembly is coupled to the clutch motor and the IAD locking clutch.
1 more element
A driveline system, comprising:
- an interaxle differential (IAD) rotationally coupled to a first drive axle and a second drive axle;
- an IAD locking clutch configured to selectively inhibit speed differentiation between the first and second drive axles;
- an actuation assembly including a clutch motor that is rotationally coupled to an actuator, wherein the actuator is configured to engage and disengage the IAD locking clutch;
- and
- a controller including instructions stored in memory executable by a processor that, during engagement of the IAD locking clutch via the clutch motor and the actuator, cause the controller to:
- activate a clutch fault indicator responsive to generation of a clutch fault according to a variance between an initial engagement position and a lock point position of a clutch motor that occur during engagement of the IAD locking clutch coupled to the clutch motor.
3 more elements
A method for operation of a driveline system, comprising:
- determining an initial engagement position of a clutch motor according to a drop in motor speed via a motor position sensor that is coupled to the clutch motor, during engagement of an IAD locking clutch by the clutch motor;
- capturing a lock point position of the clutch motor using the motor position sensor;
- generating a clutch fault when a variance between the initial engagement position and the lock point position exceeds a threshold value;
- and
- activating a clutch fault indicator when the clutch fault is generated.
2 more elements
Dependencies are inferred from the claim text.