Method of controlling speed reduction ratio for continuously variable speed transmission
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United States of America Patent
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-
Nov 6, 1990
Grant Date -
N/A
app pub date -
Oct 19, 1988
filing date -
Oct 19, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of controlling speed reduction ratio comprises the following steps: determining 'EB-REF-engine speed' which is higher than 'R-REF-engine speed' when the accelerator opening is substantially closed and the vehicle brake is applied simultaneously, and controlling speed reduction ratio so that the actual engine speed coincides with the EB-REF engine speed. Although the above method also comprises the following steps as a normal ratio control: setting the R-REF engine speed in relation to the accelerator opening, and controlling speed reduction ratio so that the actual engine speed coincides with the R-REF engine speed.
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