Appeal No. 2002-1668 Page 3
Application No. 09/531,666
5. An apparatus for controlling a continuously variable transmission for use
with an automotive vehicle including an accelerator pedal, the transmission
having an input and output shaft, the transmission being operable at a variable
speed ratio for transmitting a drive from the input shaft to the output shaft,
comprising:
means for sensing vehicle operating conditions including vehicle
deceleration;
means for producing a released accelerator pedal indicative signal when
the accelerator pedal is released;
means for calculating a target value for the speed of rotation of the input
shaft based on the sensed vehicle operating conditions;
means for calculating a correction factor per predetermined unit time
based on the sensed vehicle deceleration when the sensed vehicle deceleration
exceeds a first threshold value in the presence of the released accelerator pedal
indicative signal;
means for subtracting the correction factor from the target input shaft
speed value to decrease the target input shaft speed value at intervals of the
predetermined unit time; and
means for controlling the speed ratio to bring the input shaft speed into
coincidence with the decreased target value.
10. A method of controlling a continuously variable transmission for use with
an automotive vehicle including an accelerator pedal, the transmission having an
input and output shaft, the transmission being operable at a variable speed ratio
for transmitting a drive from the input shaft to the output shaft, the method
comprising the steps of:
sensing vehicle operating conditions including vehicle acceleration;
producing a released accelerator pedal indicative signal when the
accelerator pedal is released;
calculating a target value for the speed of rotation of the input shaft based
on the sensed vehicle operating conditions;
calculating a correction factor based on the sensed vehicle acceleration
when the sensed vehicle acceleration exceeds a threshold value in the presence
of the released accelerator pedal indicative signal;
adding the correction factor to the target input shaft speed value to correct
the target input shaft speed value;
controlling the speed ratio to bring the input shaft speed into coincidence
with the corrected target value; and
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