Patent ID: 6112839
Filing Date: 2000-09-05
Classification: B60K,E02F,G05G

Abstract:
An auxiliary hydraulic system for a work vehicle, the work vehicle configured to be coupled to an auxiliary implement including a hydraulic actuator and a feedback sensor, the feedback sensor for generating a feedback signal applied to an implement controller, the implement controller configured to generate an automatic command signal, the auxiliary hydraulic system comprising:a source of pressurized hydraulic fluid;a fluid coupler configured to be fluidly coupled to the actuator;an electro-hydraulic control valve fluidly coupled to the hydraulic fluid source and to the fluid coupler, the control valve configured to regulate the flow of fluid between the hydraulic fluid source and the hydraulic actuator in response to a valve command signal;an operator-actuatable input device for generating a manual command signal;an operator-actuatable mode device for generating a mode signal; andan auxiliary control unit coupled to the control valve, the input device, the mode device and the implement controller, the auxiliary control unit configured to operate in first and second modes in response to the mode signal, to generate the valve command signal based upon the manual command signal when operating in the first mode and based upon the automatic control signal when operating in the second mode, and to apply the valve command signal to the valve.