Internal-combustion engines – Cooling – Automatic coolant flow control
Reexamination Certificate
2006-05-23
2006-05-23
Kamen, Noah P. (Department: 3747)
Internal-combustion engines
Cooling
Automatic coolant flow control
C192S085060
Reexamination Certificate
active
07047911
ABSTRACT:
A hydraulically controlled fan drive system for controlling the cooling of an engine and having a method of engagement includes a housing assembly containing a hydraulic fluid and an engaging circuit. The engaging circuit includes a pitot tube coupled within the housing assembly that receives at least a portion of the hydraulic fluid as the housing assembly rotates to drive a clutch pack (and coupled fan) via static pressure. A fluid controller having binary control adjusts the static pressure within the pitot tube at a given rotational speed, thereby controlling the engagement of the clutch pack to a fully engaged drive (utilizing friction type engagement), a fully disengaged drive, and at least two partially engaged clutch positions (i.e. partially engaged utilizing a wet viscous type clutch engagement). To control static pressure release, the fluid controller may utilize a dual spool system valving arrangement or a parallel fixed orifice binary control.
REFERENCES:
patent: 2609054 (1952-09-01), Geyer et al.
patent: 2960202 (1960-11-01), Stevens et al.
patent: 4231457 (1980-11-01), Cornish
patent: 4467901 (1984-08-01), Hattori et al.
patent: 4899861 (1990-02-01), Cummings, III
patent: 5224446 (1993-07-01), Okita et al.
patent: 5667045 (1997-09-01), Cummings, III
patent: 5855266 (1999-01-01), Cummings, III
patent: 5937979 (1999-08-01), Cummings
patent: 5947247 (1999-09-01), Cummings, III
patent: 2003/0041814 (2003-03-01), Laird et al.
patent: 622 619 (1940-06-01), None
Hart Gary E.
Ignatovich James E.
Malott Theodore A.
Pickelman Dale M.
Robb Neil E.
Artz & Artz P.C.
Borg-Warner Inc.
Dziegielewski Greg
Kamen Noah P.
LandOfFree
Hydraulic fan drive system employing binary control strategy 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 fan drive system employing binary control strategy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic fan drive system employing binary control strategy will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3543893