Systems and methods to determine abnormalities in a vehicle stabilizer system
AssigneeGM Global Technology Operations LLC
InventorsBrian K. Saylor, Joshua R. Auden, Robert P. Marble
Life of this patent
Estimating the term…
Abstract
Systems and methods to detect abnormalities within a stabilizer system for a vehicle. A method includes receiving suspension system data from one or more vehicle sensors, calculating a roll gradient from the suspension system data, determining whether the calculated roll gradient is greater than a predetermined roll gradient threshold, and setting a diagnostic notification if the calculated roll gradient is greater than the predetermined roll gradient threshold.
Claims16
A method to detect abnormalities within a stabilizer system for a vehicle, the method comprising:
- receiving suspension system data from one or more vehicle sensors, the suspension system data including lateral acceleration of the vehicle and vehicle roll angle data;
- calculating a roll gradient from the suspension system data, the roll gradient calculated as a change in the vehicle roll angle over a change in the lateral acceleration of the vehicle;
- determining whether the calculated roll gradient is greater than a predetermined roll gradient threshold;
- and
- setting a diagnostic notification if the calculated roll gradient is greater than the predetermined roll gradient threshold.
An automotive vehicle, comprising:
- a chassis comprising an axle;
- a first wheel and a second wheel coupled to opposite ends of the axle;
- a suspension system coupled to the chassis, the suspension system comprising a stabilizer bar having a first end coupled to the chassis near the first wheel via a first stabilizer bar link and a second end coupled to the chassis near the second wheel via a second stabilizer bar link and at least one stabilizer bar bushing;
- a first suspension displacement sensor coupled to the chassis near the first wheel;
- a second suspension displacement sensor coupled to the chassis near the second wheel;
- an electronic controller coupled to the chassis and electronically connected to the first and second suspension displacement sensors, the electronic controller configured to
- receive suspension system data from the first and second suspension displacement sensors, the suspension system data including lateral acceleration of the automotive vehicle and vehicle roll angle;
- calculate a roll gradient from the suspension system data, the roll gradient calculated as a change in the vehicle roll angle over a change in the lateral acceleration of the automotive vehicle;
- determine whether the calculated roll gradient is greater than a predetermined roll gradient threshold;
- and
- transmit an indication of a possible suspension component malfunction if the calculated roll gradient is greater than the predetermined roll gradient threshold.
A system within a vehicle for detecting abnormalities within a stabilizer system of the vehicle, comprising:
- one or more suspension system displacement sensors;
- and
- an electronic controller configured to
- receive suspension system data from the one or more suspension displacement sensors;
- calculate a roll gradient from the suspension system data, the roll gradient calculated as a change in the vehicle roll angle over a change in a lateral acceleration of the vehicle;
- determine whether the calculated roll gradient is greater than a predetermined roll gradient threshold;
- and
- transmit an indication of a possible suspension component malfunction if the calculated roll gradient is greater than the predetermined roll gradient threshold, wherein transmitting the indication of the possible suspension component malfunction comprises one or more of setting a diagnostic trouble code and transmitting a notification to a vehicle operator.
Dependencies are inferred from the claim text.