Resources Contact Us Home
Cooling system for construction machine

Image Number 12 for United States Patent #7685816.

A cooling system for a construction machine, which can reduce noise of a cooling fan and can reliably produce cooling air at a required flow rate.The cooling system comprises a cooling fan 25 for producing cooling air introduced to an intercooler 22, a radiator 23 and an oil cooler 24, a fan hydraulic motor 26 for driving the cooling fan 25, a fan hydraulic pump 27 for delivering a hydraulic fluid to the fan hydraulic motor 26, an air temperature sensor 31 for detecting an air temperature T.sub.1 at an outlet of the intercooler 22, a cooling water temperature sensor 33 for detecting a temperature T.sub.2 of cooling water for the radiator 23, a working oil temperature sensor 36 for detecting a temperature T.sub.3 of working oil for the oil cooler 24, and a controller 29 for outputting a control signal corresponding to a maximum value among calculation values N.sub.1, N.sub.2 and N.sub.3 of cooling fan rotation speed, which correspond respectively to detected values T.sub.1, T.sub.2 and T.sub.3 from the air temperature sensor 31, the cooling water temperature sensor 33 and the working oil temperature sensor 36.

  Recently Added Patents
System and method for supporting fibre channel over ethernet communication
Method and a channel estimating arrangement for performing channel estimation
Process for preparing MDA via the stage of the aminal
Charged-particle beam lens
Polyfunctional sulfur-containing epoxies and compositions thereof
Rate controlled first in first out (FIFO) queues for clock domain crossing
Method for fabricating solar cell
  Randomly Featured Patents
Electrode placement device for taking electrocardiograms and method of use
Refrigeration unit
Electronic component with a plastic package and method for production
Thin type mouse
High-voltage circuit breaker with improved circuit breaker rating
Latch needle for loop forming textile machines
Wall-mountable chair
Coin processing method and apparatus
Method for automatic determination of exposure of a radiographic film and an automatic film-exposing device for a diagnostic radiology installation in which said method is employed
Nail clips