B - Operations – Transporting – 60 – K
Patent
B - Operations, Transporting
60
K
B60K 23/00 (2006.01) F16H 9/04 (2006.01) F16H 61/662 (2006.01)
Patent
CA 2352991
A shift control system comprises belt-speed calculation means, contact-circle enlarging pulley determination means, diameter-change calculation means, slip prevention thrust calculation means, speed ratio maintaining thrust calculation means and additional thrust calculation means. The diameter--change calculation means calculates the difference between the diameters of the contact circles at present and after a shift to a target speed change ratio, and the slip prevention thrust calculation means calculates a slip prevention thrust necessary for transmitting the power through a V belt without slip between the V belt and the drive and driven pulleys. The speed ratio maintaining thrust calculation means calculates a speed ratio maintaining thrust that is an addition to the slip prevention thrust for maintaining the current speed change ratio in constant condition and for transmitting the power without any slip of the belt, and the additional thrust calculation means calculates a shifting additional thrust that is added for the contact-circle enlarging pulley to achieve a shift to the target speed change ratio. The shifting additional thrust is inversely proportional to the running speed of the V belt, which is determined by the belt-speed calculation means, but is proportional to the difference between the diameters of the contact circles.
Kanehara Shigeru
Koyama Hideo
Miyazaki Tetsushi
Goudreau Gage Dubuc
Honda Giken Kogyo Kabushiki Kaisha
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