Method of controlling speed reduction ratio for a continuously variable speed transmission
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United States of America Patent
Stats
-
Oct 16, 1990
Grant Date -
N/A
app pub date -
Oct 19, 1988
filing date -
Oct 20, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The speed reduction ratio of a continuously variable speed transmission is controlled by setting a reference engine speed according to a parameter representing a driver's intention of acceleration, such as the depression of an accelerator pedal, and controlling the speed reduction ratio so as to equalize the engine rotational speed with the reference engine speed. When the parameter is lowered such as by releasing the accelerator pedal, the process of controlling the speed reduction ratio due to a reduction in the reference engine speed caused by the reduction in the parameter is started after a certain time delay.
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