Speed change control device for belt type continuously...

Details Speed change control device for belt type continuously... Speed change control device for belt type continuously...

2007-01-12

2010-10-26

Siconolfi, Robert A (Department: 3657)

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Fluid pressure actuator for adjustment of member

C474S018000, C477S045000, C477S046000, C701S029000, C701S051000, C701S054000

Reexamination Certificate

active

07819764

ABSTRACT:
A speed change control device for a belt type continuously variable transmission has a speed change control unit (32) which controls an oil pressure for determining a speed ratio of the continuously variable transmission (10) by operating a step motor (40), and detects a rotation speed of a primary pulley or a secondary pulley. A driving speed of the step motor (40) is limited using two or more of a temperature of a working oil of the speed change control unit (32), the speed ratio of the continuously variable transmission (10), and the detected rotation speed as parameters.

REFERENCES:
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patent: 6829528 (2004-12-01), Kang et al.
patent: 6849030 (2005-02-01), Yamamoto et al.
patent: 2001/0046924 (2001-11-01), Tamura et al.
patent: 2004/0110599 (2004-06-01), Jozaki et al.
patent: 2004/0133318 (2004-07-01), Kang et al.
patent: 10-225189 (1998-08-01), None
patent: 2001-330118 (2001-11-01), None
patent: 2001-330122 (2001-11-01), None

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