Dozer blade attachment control system and apparatus for a compact track loader

A dozer blade attachment control system for a work machine, the work machine extending in a fore-aft direction, the system comprising:

• a frame and a ground-engaging mechanism, the ground-engaging mechanism configured to support the frame on a surface;
• a boom assembly coupled to the frame, the boom assembly having a pair of boom arms;
• an attachment coupler coupled to a distal section of the boom arms;
• a dozer blade attachment coupled to the attachment coupler;
• a hydraulic circuit supported on the frame, the hydraulic circuit comprising
• a hydraulic pump delivering fluid through a plurality of flow paths coupled to one or more of a tilt hydraulic cylinder on the dozer blade attachment and an angle hydraulic cylinder on the dozer blade attachment, the tilt hydraulic cylinder coupled to an auxiliary port supported on the frame and operationally positioned to move the dozer blade attachment in a direction of roll, the angle hydraulic cylinder coupled to the auxiliary port supported on the frame, and operationally positioned to move the dozer blade attachment in a direction of yaw;
• a diverter valve operable in a first position delivering hydraulic fluid through a first flow path and a second position delivering hydraulic fluid through a second flow path;
• a pressure compensated directional control valve operable to selectively feed from a pressure differential from the plurality of flow paths;
• and
• an electronic controller communicatively coupled to the hydraulic circuit, the electronic controller operable to modify the hydraulic circuit to one or more of
• a first configuration with the diverter valve in the first position, the first position enabling actuation of the tilt hydraulic cylinder,
• a second configuration with the diverter valve in the second position, the second position enabling actuation of the angle hydraulic cylinder;
• and
• a third configuration with the diverter valve in the second position enabling actuation of the angle hydraulic cylinder and the pressure compensated directional control valve creating a shuttle flow path from a higher and a lower pressure side of the hydraulic circuit, the pressure compensated directional control valve enabling simultaneous actuation of the tilt hydraulic cylinder.