Machine element or mechanism – Gearing – With fluid drive
Patent
1996-09-09
1998-04-14
Wright, Dirk
Machine element or mechanism
Gearing
With fluid drive
F16H 6106
Patent
active
057379793
ABSTRACT:
Clutches in multi-speed transmission have been initially calibrated in an attempt to determine the point at which the clutch is filled and thus reduce the harshness of engagement of the elements within the clutches during future gear ratio changes in the transmission when being worked under normal conditions. In these earlier attempts at calibrating the clutches, the desired pressure level needed to fill the clutch was either empirically derived or calibrated by incrementally increasing or stepping the pressure level from a minimum value to the required value. In the subject invention, the clutches are calibrated by using a method of calibration that is substantially the same method that is used during normal operating conditions. By using substantially the same method, any effects of "hysteresis" of the associated valving is basically eliminated.
REFERENCES:
patent: 4283970 (1981-08-01), Vukovich
patent: 4401200 (1983-08-01), Heidemeyer et al.
patent: 4646891 (1987-03-01), Braun
patent: 4805750 (1989-02-01), Nitz
patent: 4855913 (1989-08-01), Brekkestran et al.
patent: 4989471 (1991-02-01), Bulgrien
patent: 5082097 (1992-01-01), Goeckner et al.
patent: 5224577 (1993-07-01), Falck et al.
Kajjam Ashok K.
McKenzie Philip C.
Burrows J. W.
Caterpillar Inc.
Wright Dirk
LandOfFree
Method of calibrating clutches in a transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of calibrating clutches in a transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of calibrating clutches in a transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-627070