Engine cooling fan control system

Details Engine cooling fan control system Engine cooling fan control system

2005-05-17

2005-05-17

Leja, Ronald (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

C123S041010

Reexamination Certificate

active

06894883

ABSTRACT:
A control system for a fan of a cooling system of an internal combustion engine of a motor vehicle having a viscous coupling (fan clutch) driving the fan and a control unit (PID governor) to which the setpoint temperature and the measured actual temperature of the cooling system (coolant temperature) are fed. The control unit (PID governor) is connected downstream to a limiter, which holds the ratio of output speed to input speed below a specifiable limit (x % of input speed). An overheat protection logic disables the limiter when the actual coolant temperature exceeds a specifiable critical temperature that is higher than the setpoint temperature of the control unit (PID governor).

REFERENCES:
patent: 5584371 (1996-12-01), Kelledes et al.
patent: 6129193 (2000-10-01), Link
patent: 6253716 (2001-07-01), Palmer et al.
patent: 6600249 (2003-07-01), Nelson et al.

Affiliated with

Also associated with

Rating

Engine cooling fan control system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Engine cooling fan control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Engine cooling fan control system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3435660