Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1992-02-26
1993-05-11
Wright, Dirk
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
3644241, F16H 6106
Patent
active
052091414
ABSTRACT:
During shift change, a discrimination is made as to a load, a quantity of residual hydraulic oil in respective shift change clutches (F, R, 1 to 4) and a state of shift change which has been effected from what speed stage to what speed stage so that a pattern of electrical commands to be issued to pressure control valves (51 to 56) for required shift change clutches is variably controlled depending on results derived from the above discrimination. Thus, smooth shift change can always be achieved regardless of running conditions. Electrical commands (C.sub.1 to C.sub.6) to be fed to the respective pressure control valves (51 to 56) are compared with electrical currents (I.sub.1 to I.sub.6) outputted from drive circuits and outputs (S.sub.1 to S.sub.6) from clutch pressure detecting means (101 to 106) for each clutch, whereby an abnormality is detected with the relevant clutch based on results derived from the comparison. Once an abnormality is detected, an adequate disposal for processing the abnormality is executed so as to reliably prevent double engagement from taking place with clutches.
REFERENCES:
patent: 4653350 (1987-03-01), Downs et al.
patent: 4685356 (1987-08-01), Iwatsuki
patent: 4799158 (1989-01-01), Patil
patent: 4800497 (1989-01-01), Koori et al.
patent: 4803901 (1989-02-01), Hamano et al.
patent: 4807496 (1989-02-01), Hayasaki et al.
patent: 4821190 (1989-04-01), Patil
patent: 5092199 (1992-03-01), Goto et al.
patent: 5113720 (1992-05-01), Asayama et al.
Asayama Yoshio
Okura Yasunori
Sato Takayuki
Tsubota Makio
Kabushiki Kaisha Komatsu Seisakusho
Wright Dirk
LandOfFree
Apparatus for controlling gear box does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for controlling gear box, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for controlling gear box will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1343311