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US 2009/0151351 A1Published application
Method for determining necessity of multiple vane cleaning procedures
AssigneeDetroit Diesel Corporation
InventorsMark A. Zurawski, David J. Dronzkowski
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Abstract
A method of operating an internal combustion engine with a variable geometry turbocharger whereby the turbocharger is cleaned of accumulated soot on a time based periodic basis.
Claims15
A method for cloning soot deposits from at least one vane of a variable geometry turbocharger equipped with a vane turbocharger exposed to a turbocharger internal combustion engine exhaust stream, comprising:
- determining an operational status of said engine while simultaneously;
- determining an operational status of said turbocharger;
- with a predetermined period of time;
- cycling said vanes in said turbocharger for a predetermined number of times;
- determining turbocharger motor effort for a predetermined calibratable maximum number of cycles according to the mathematical structure:
- ∑
- /
- F
- /
- n
- Wherein;
- F is motor effort and
- n is a number of times for sampling vane actuator sampling for returning said turbocharger to normal operation and resetting said timer.
10 more elements
Dependencies are inferred from the claim text.