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US 2020/0217257 A1Published application
Methods and system for diagnosing belt slip of an engine front end accessory drive
AssigneeFord Global Technologies, LLC
InventorsM. Scott Christensen, Michael Bastanipour, Nicholas Herhusky
Life of this patent
Estimating the term…
Abstract
Systems and methods for detecting and mitigating belt slip of an engine front end accessory drive are described. In one example, three different signals are input to a weighted average filter to determine the presence or absence of belt slip so that quality of an indication of belt slip may be improved.
Claims20
An engine operating method, comprising:
- indicating a belt slippage via a controller, the belt slippage indicated responsive to a weighted average of a first moment of inertia threshold being crossed, a second moment of inertia threshold being crossed, and an audible signal amplitude or power level threshold being crossed;
- and
- adjusting operation of a machine responsive to the indication of belt slippage.
An engine operating method, comprising:
- adjusting sampling of a passenger cabin microphone via a controller responsive to a first indication of belt slippage, the first indication of belt slippage based on a change of a mass moment of inertia;
- and
- providing a second indication of belt slippage via a weighted average of three belt slip signals included in the controller.
A system, comprising:
- an engine including an integrated starter/generator;
- and
- a controller including executable instructions stored in non-transitory memory to adjust operation of the engine responsive to an indication of belt slippage provided via a weighted average filter included within the controller, the weighted average filter including inputs for an audible signal amplitude or power level being crossed and a first moment of inertia threshold being crossed.
Dependencies are inferred from the claim text.