Control apparatus and method for automatically controlling a hyd

Details Control apparatus and method for automatically controlling a hyd Control apparatus and method for automatically controlling a hyd

1991-11-12

1993-10-12

Look, Edward K.

Power plants

Pressure fluid source and motor

Condition responsive control means responsive to, or...

60420, 60428, 60431, 60433, 60445, 60434, 417 32, 417 34, 417 10, 123319, 123350, 123198D, 1231793, F16D 3100

Patent

active

052514404

ABSTRACT:
A control system for automatically controlling the operation of a hydraulic system for heavy construction equipment. The system of this invention provides a controller optimally connected to sensors and to control devices on the hydraulic system so that it automatically and optimally preheats the engine coolant and the hydraulic fluid of the heavy construction equipment before a normal starting operation in order to reach to an optimal operating temperature in a relatively short time. The control system automatically checks the operating temperature of the engine coolant and the hydraulic fluid by temperature sensors, and alarms the operator to any overheat condition by an alarm device. The control system also automatically controls the operational mode in order to remove the overheat condition thus preventing the temperature of the engine coolant and the hydraulic fluid from rising above a predetermined temperature. The system also always optimally starts the engine of the heavy construction, and includes a retry sequence for same.

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