Abstract: A power management system is provided. The power management system includes a power generation apparatus and a pump drivably coupled to the power generation apparatus. The power management system also includes a valve in fluid communication with the pump. The valve and the pump are components of a hydraulic circuit. The power management system further includes a controller communicably coupled to the valve. The controller is configured to selectively regulate the valve in order to control a pressure in the hydraulic circuit in a predetermined manner such that a torque load placed on the power generation apparatus by the pump lies below a threshold torque.

Abstract: A vibratory compactor machine includes a machine frame and a roller drum rotatably coupled to the frame and rotatable about a drum axis oriented generally traverse to the direction of travel of the machine. A vibration assembly is disposed inside the roller drum. The vibration assembly includes a first eccentric member and a second eccentric member rotatably disposed in the roller drum and rotatable about a respective first and second eccentric axes orientated perpendicularly to the drum axis. The roller drum rotates about the drum axis independently of the vibration assembly and the first and second eccentric members.

Abstract: A vibratory compactor machine includes a machine frame and a roller drum rotatably coupled to the frame and rotatable about a drum axis oriented generally traverse to the direction of travel of the machine. A vibration assembly is disposed inside the roller drum. The vibration assembly includes a first eccentric member and a second eccentric member rotatably disposed in the roller drum and rotatable about a respective first and second eccentric axes orientated perpendicularly to the drum axis. The roller drum rotates about the drum axis independently of the vibration assembly and the first and second eccentric members.