Electronic throttle system
AssigneeFord Global Technologies, LLC
InventorAllan J. Lippa
Life of this patent
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Abstract
An electronic throttle control system is described where a throttle position sensor has multiple slopes depending on the operating region. At low throttle positions, a greater slope, and thus a greater sensitivity is provided, thereby increasing control resolution. At greater throttle positions, a lower slope, and thus lower sensitivity is provided. In this way, an output signal that varies across the entire operating region of the throttle is provided for monitoring and control, while improved performance at low throttle angles can be simultaneously achieved. A method of making the sensor is also described.
Claims20
A position sensor, comprising:
- a substrate;
- and
- a track positioned on said substrate including at least two contiguous first and second segments, each of said segments having a different material property.
A process for producing a position sensor, comprising:
- applying a first track segment on a substrate, said first track segment having a first resistivity;
- and
- applying, contiguous to said first track segment, a second track segment on said substrate, said second track segment having a second resistivity.
An electronic throttle control system comprising:
- a throttle plate;
- a first position sensor coupled to said throttle plate;
- a second position sensor coupled to said throttle plate;
- wherein said second position sensor has a first characteristic in a first operating range and a second characteristic in a second operating range, wherein said first characteristic provides a greater signal sensitivity than said second characteristic.
An electronic throttle control system comprising:
- a throttle plate;
- a first position sensor coupled to said throttle plate;
- a second position sensor coupled to said throttle plate;
- wherein said first position sensor outputs a first voltage signal linearly proportional to an angle of rotation of said throttle plate;
- and
- wherein said second position sensor outputs a second voltage signal linearly proportional to said angle of rotation within a first range of angles and outputs a third voltage signal linearly proportional to said angle of rotation within a second range of angles, wherein a first slope of said second voltage signal is different than a second slope of said third voltage signal.
Dependencies are inferred from the claim text.