F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 61/06 (2006.01) F16H 61/00 (2006.01) F16H 61/28 (2006.01) F16H 61/02 (2006.01) F16H 61/12 (2006.01)
Patent
CA 2313101
In a control apparatus for that automatic transmission of a vehicle which is provided with speed- change solenoid valves for regulating the hydraulic oil pressures in the hydraulic engaging elements (C1, C2, C3, B1, B2) through speed-change control valves (61 - 65) corresponding to the hydraulic engaging elements (C1, C2, C3, B1, B2), cleaning work to remove foreign matter in the solenoid valves is performed by varying the opening degree of the speed-change solenoid valves (7 1 - 7 5) during running of the vehicle without affecting the hydraulic oil pressures in the hydraulic engaging elements. At the time of a line pressure control mode in which the line pressure is reduced below a maximum set pressure (P max), the opening degree of the speed-change solenoid valve is varied within a range in which there is outputted a signal pressure higher than a minimum signal pressure required to fully open a speed-change control valve which corresponds to the hydraulic engaging element of the then-established speed transmission train.
Suzuki Tadahiro
Takahashi Tooru
Yamada Kimiaki
Goudreau Gage Dubuc
Honda Giken Kogyo Kabushiki Kaisha
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