초록 ▼

An engine cooling system and method and apparatus for controlling hydraulic fluid flow between a plurality of hydraulic components in a hydraulic system is shown. The system and method utilized at least one hydraulic sensor for actuating a hydraulic valve which controls the fluid delivery to the hyd

An engine cooling system and method and apparatus for controlling hydraulic fluid flow between a plurality of hydraulic components in a hydraulic system is shown. The system and method utilized at least one hydraulic sensor for actuating a hydraulic valve which controls the fluid delivery to the hydraulic components. At least one of the hydraulic sensors includes a thermosensitive material which causes the sensor to deliver hydraulic pressure to an actuator on the valve when the material is heated in response to an increase in temperature of, for example, a coolant associated with the engine.

대표청구항 ▼

[ What is claimed is:] [14.] A method for thermostatically controlling cooling in a hydraulic cooling system associated with an engine of an automobile, said cooling system comprising a pump, a first hydraulic component and a second hydraulic component; said method comprising the steps of:hydraulica

[ What is claimed is:] [14.] A method for thermostatically controlling cooling in a hydraulic cooling system associated with an engine of an automobile, said cooling system comprising a pump, a first hydraulic component and a second hydraulic component; said method comprising the steps of:hydraulically sensing a bypass condition;said bypass condition corresponding to an increase in air conditioning refrigerant pressure or increase in engine temperature;generating hydraulic signal in response to said by-pass condition; andcontrolling an amount of hydraulic fluid delivered to said first hydraulic component and said second hydraulic component in response to said hydraulic signal;wherein said hydraulically sensing step further comprises the step of:integrally forming a temperature sensitive material onto said coolant sensor, said temperature sensitive material expanding when said coolant temperature exceeds a predetermined coolant temperature.