Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control
Reexamination Certificate
2004-12-03
2008-10-07
To, Tuan C (Department: 3663)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Transmission control
C701S029000, C477S034000, C477S037000, C477S098000, C307S152000, C307S144000
Reexamination Certificate
active
07433770
ABSTRACT:
A hydraulic fluid change indicating device for an automatic transmission includes a first deterioration rate calculating unit; a deterioration acceleration coefficient calculating unit; and a thermal hydraulic fluid deterioration calculating unit for calculating a thermal hydraulic fluid deterioration according to the first deterioration rate and the deterioration acceleration coefficient. The device further includes a second deterioration rate calculating unit according to an engine speed, input shaft speed, and output shaft speed; a mechanical hydraulic fluid deterioration calculating unit for calculating a mechanical fluid deterioration according to the second deterioration rate; and a determining unit for determining whether or not the thermal hydraulic fluid deterioration or the mechanical hydraulic fluid deterioration is greater than a predetermined hydraulic fluid change threshold.
REFERENCES:
patent: 5960669 (1999-10-01), Ohashi et al.
patent: 6009361 (1999-12-01), Huber et al.
patent: 6266587 (2001-07-01), Guertler et al.
patent: 6543397 (2003-04-01), Sandberg et al.
patent: 62-93415 (1987-04-01), None
patent: 62-093415 (1987-04-01), None
Jih-Jenn Huang; DeBra, D.B.; “Model predictive fluid temperature control for the quiet hydraulic precision turning machine” Sep. 15-18, 1996 pp. 486-491.
Furumoto Mitsumasa
Inagawa Yasushi
Koyama Hideo
Takagi Yoshiari
Honda Motor Co. Ltd.
Mawari Redhwan
To Tuan C
Westerman, Hattori, Daniels & Adrian , LLP.
LandOfFree
Hydraulic fluid change indicating device for automatic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic fluid change indicating device for automatic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic fluid change indicating device for automatic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4012724