Back to results
US 12,597,302 B2Granted
Air pressure limiting valve diagnostic systems and methods
AssigneeInternational Engine Intellectual Property Company, LLC
InventorTimothy M. Lyons
Life of this patent
Estimating the term…
Abstract
Diagnostic systems and methods utilize existing sensors on an engine and/or within a vehicle to detect and/or diagnose malfunctions or failures with an air pressure limiting valve. By analyzing and comparing in-vehicle and on-engine sensors data, as well as engine control maps, malfunctions and/or failures to the air pressure limiting valve and/or leaks in the air flow within the air pressure system are detectable.
Claims9
A method for determining a malfunction or failure of an air pressure limiting valve within a vehicle comprising the steps of:
- providing an air pressure system comprising an air pressure limiting valve;
- a computing system operatively coupled to the air pressure system;
- providing a plurality of sensors within an engine or transmission of the vehicle, wherein a first sensor of the plurality of sensors measures a shift time, wherein a second sensor of the plurality of sensors measures a turbo wastegate duty cycle, and wherein a third sensor of the plurality of sensors measures a turbo speed,
- wherein a malfunction condition is detected in the air pressure limiting valve of the vehicle when the first sensor measures a shift time greater than a first predetermined amount, the second sensor measures a turbo wastegate duty cycle greater than a second predetermined amount, and the third sensor of the plurality of sensors measures a turbo speed greater than a third predetermined amount within the vehicle;
- and
- activating a failure indicator indicating the pressure limiting valve failure or malfunction.
3 more elements
Dependencies are inferred from the claim text.