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US 2014/0338307 A1Published application
Electric waste gate control system sensor calibration with end-stop detection
AssigneeFord Global Technologies, LLC
InventorsVladimir V. Kokotovic, Yan Wang
Life of this patent
Estimating the term…
Abstract
Various embodiments relating to detection of an end-stop position of a waste gate valve and calibration of a waste gate position sensor relative to the detected end-stop position are provided. In this way, it is possible to more accurately control the waste gate.
Claims20
A method, comprising:
- during calibration of a waste gate position sensor:
- adjusting a waste gate valve to a first end-stop position;
- associating a first feedback position with the first end-stop position;
- adjusting the waste gate valve to a second end-stop position;
- associating a second feedback position with the second end-stop position;
- and
- adjusting a position sensor gain based on the first feedback position and the second feedback position.
4 more elements
A method for calibrating a waste gate position sensor comprising:
- during a calibration operating condition,
- controlling an electric actuator to adjust a waste gate valve to a first end-stop position;
- associating a first feedback position signal of the waste gate position sensor with the first end-stop position;
- controlling the electric actuator to adjust the waste gate valve to a second end-stop position;
- associating a second feedback position signal of the waste gate position sensor with the second end-stop position;
- and
- adjusting a position sensor gain based on the first feedback position signal and the second feedback position signal.
4 more elements
A method comprising:
- controlling an electric actuator to adjust a waste gate valve to a first end-stop position;
- and
- if a difference between a first feedback position signal and a first commanded position signal is greater than a difference threshold value while the first feedback position signal and the first commanded position signal are in a steady state condition and an electric actuator velocity is less than a velocity threshold value, associating the first feedback position signal with the first end-stop position.
Dependencies are inferred from the claim text.