Abnormality detecting apparatus for wheel speed sensors and automobile incorporating the same
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United States of America Patent
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Jun 6, 2006
Issued Date -
N/A
app pub date -
Sep 30, 2005
filing date -
Nov 12, 2004
priority date (Note) -
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status (Latency Note)
Importance
Abstract
Wheel speed sensors arranged at each of driving wheels and idler wheels detect rotational speeds of corresponding wheels. ECU includes a wheel speed calculating portion calculating wheel speeds of the driving wheels and the idler wheels based on the detected rotational speeds, and an abnormality detecting portion detecting abnormality of the wheel speed sensors based on the calculated wheel speeds. The abnormality detecting portion detects the abnormality of the wheel speed sensors based on: a first wheel speed that is at least one of the wheel speeds of the driving wheels and the idler wheels being substantially zero; at least one of the wheel speeds except for the first wheel speed being greater than a prescribed threshold value; and an average wheel speed of the idler wheels being greater than an average wheel speed of the driving wheels.
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