Gm Global Technolgoy Operations, Inc.

Medallion Instrumentation Systems, LLC

Kevin A Cansiani

Xinyu Du

Mutasim Abdurrahman Salman

Ronald Eugene Gaskins

Timothy J Clever

Brian K Saylor

Martin Payne

Lance W Norris

Lichao Mai

Christopher A Koches

Shengbing Jiang

Wen-Chiao Lin

Xiaoyu Huang

Dongyi Zhou

Tim J Clever

Jianshe Feng

Arvind Sharma

A system for testing a suspension system of a vehicle includes an inertial measurement module and a suspension fault detection module. The inertial measurement module is configured to, while the vehicle is not moving, collect sensor data from one or more inertial measurement sensors for different states of the suspension system. The sensor data is indicative of inertial states of the vehicle while the suspension system is in each of the different states. The suspension fault detection module is configured to, based on the sensor data and a set of thresholds, determine whether a fault exists with the suspension system, isolate and identify the fault, and perform a countermeasure based on the detection of the fault.

Vehicle detection and isolation system for detecting spring and stabilizing bar associated degradation and failures

In various embodiments, methods, systems, and vehicles are provided for determining a fault in a suspension system of a vehicle. In an exemplary embodiment, sensor data is obtained via one or more vehicle sensors during operation of the vehicle; a one or more first coefficients for the vehicle are calculated via a processor using a pitch model with the sensor data; one or more second coefficients for the vehicle are calculated via the processor using a roll model with the sensor data; and a fault in the suspension system is determined via the processor using the first coefficients and the second coefficients.

Suspension fault diagnostics and prognostics using pitch and roll model

A method of identifying a fault in a friction brake actuated by hydraulic brake pressure and configured to decelerate a vehicle road wheel includes detecting, via a first sensor, a vibration at the road wheel and communicating data indicative of the detected vibration to a controller. The method additionally includes detecting, via a second sensor, upon application of the hydraulic brake pressure, a hydraulic brake pressure variation and communicating data indicative of the detected hydraulic brake pressure variation. The method additionally includes comparing, via the controller, the data indicative of the detected vibration with a threshold vibration value and the data indicative of the detected hydraulic brake pressure variation with a threshold hydraulic brake pressure value. Furthermore, the method includes generating a sensory signal indicative of the brake fault when magnitudes of the detected vibration and the detected hydraulic brake pressure variation are greater than their respective threshold values.

Detection of a friction brake fault

A machine bearing disposed on a rotatable member, such as may be present on a vehicle, is described. A method for monitoring a state of health of the machine bearing includes monitoring, via a microphone, an acoustic signal, and coincidently determining a rotational speed of the rotatable member associated with the machine bearing. The sound spectrum is correlated to the rotational speed of the rotating member, and a time-frequency analysis is executed to determine a sound spectrum. The sound spectrum is transformed to a residual spectrum. A first feature associated with a first frequency band and a second feature associated with a second frequency band are extracted from the residual spectrum. The state of health associated with the machine bearing is detected based upon the first and second features, and is communicated to a second controller.

Method and apparatus for monitoring a machine bearing on-vehicle

An apparatus and method that detect a condition of a vehicle component are provided. The method includes diagnosing vehicle health of a vehicle by analyzing one or more from among vehicle performance, vehicle energy usage, and vehicle vibration and acoustics, performing fault isolation on the vehicle to detect a health condition of a vehicle component corresponding to the isolated fault if the vehicle health below a predetermined threshold, monitoring the vehicle component corresponding to the isolated fault and estimating a remaining useful life of the vehicle component corresponding to the isolated fault, and performing one or more from among continuously monitoring, scheduling maintenance, providing a warning, and performing fault mitigation based on the estimated remaining useful life of the vehicle component corresponding to the isolated fault.

Apparatus and method that diagnose vehicle health condition

A system according to the principles of the present disclosure includes a profile storage module, a profile playback module, and a speed control module. The profile storage module stores an acceleration profile specifying a manner of accelerating a marine vessel. The profile playback module, in response to a play command received from a vessel operator, retrieves the acceleration profile and adjusts a desired engine speed based on the acceleration profile. The speed control module controls an engine speed of the marine vessel based on the desired engine speed.

Engine control system and method for a marine vessel

A system for a watercraft includes memory, a communications module, and a throttle control module. The memory includes a first mapping of measured accelerator position to desired throttle opening. The communications module selectively downloads a second mapping of the measured accelerator position to the desired throttle opening to the memory. The throttle control module generates the desired throttle opening based on the measured accelerator position and a selected one of the first and second mappings. A throttle actuator module opens a throttle valve based on the desired throttle opening.

Watercraft throttle control systems and methods

A control system for a vehicle that includes an engine includes a speed generation module, an airflow determination module, and a throttle control module. The speed generation module generates a desired engine speed during a period after a measured vehicle speed is greater than or equal to a desired vehicle speed, wherein the desired engine speed is based on a difference between the desired vehicle speed and the measured vehicle speed. The airflow determination module determines a desired airflow based on a difference between the desired engine speed and a measured engine speed. The throttle control module determines a desired throttle position based on the desired airflow, and commands a throttle of the engine to the desired throttle position.

System and method for operating a vehicle cruise control system

A method and system for operating a marine vessel includes a cruise control module operating the marine vessel at a speed and a trim control module positioning an outdrive into a plurality of trim positions. A fuel economy determination module determines a plurality of fuel economies for each of the trim positions and determines an efficient trim position from the plurality of fuel economies for each of the trim positions. An operation control module operates the marine vessel at the efficient trim position. A trim tab position may also be taken into account for efficient operation.

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Detroit, MI, United States of America

Kevin A Cansiani