Methods and apparatus for a lawn maintenance vehicle park brake and traction drive interlock are provided. A park brake mechanism is selectively operable between an engaged position and a disengaged position. A traction drive is also mounted to the lawn maintenance vehicle, the traction drive having a disable mode which prohibits transmission of a driving force from the traction drive to a drive wheel. A first operable connection between the park brake mechanism and a wheel brake activates the wheel brake. A second operable connection between the park brake mechanism and the traction drive activates the disable mode of the traction drive. A method of controlling a lawn maintenance vehicle with a park brake and traction drive interlock include the steps of providing a lawn maintenance vehicle, providing an operable park brake mechanism, providing a first operable connection, and providing a second operable connection.

A drive arrangement for a harvesting header of a harvesting machine having a running gear on which a feeder housing is mounted. A front side of the feeder housing has a header mount that moves relative to the feeder housing and on which the harvesting header is detachably fastened. An automated coupling mechanism is provided to link a driven shaft from the harvesting machine to a drive shaft of the harvesting header as the header is connected to the harvesting machine. The drive connector connected with the header mount is movable relative thereto during the attachment of the harvesting header to axially align the driven shaft and drive shaft as the harvesting header approaches the feeder housing during the attachment to accommodate differing header drive shaft orientations.

A drive arrangement for a harvesting header of a harvesting machine having a running gear on which a feeder housing is mounted. A front side of the feeder housing has a header mount that moves relative to the feeder housing and on which the harvesting header is detachably fastened. An automated coupling mechanism is provided to link a driven shaft from the harvesting machine to a drive shaft of the harvesting header as the header is connected to the harvesting machine. The drive connector connected with the header mount is movable relative thereto during the attachment of the harvesting header to axially align the driven shaft and drive shaft as the harvesting header approaches the feeder housing during the attachment to accommodate differing header drive shaft orientations.

A drive and control system for a lawn tractor includes a CAN-Bus network, a plurality of controllers, a pair of electric transaxles controlled by the plurality of controllers, and one or more steering and drive input devices coupled to respective sensor(s) for sensing user steering and drive inputs. The plurality of controllers communicate with one or more vehicle sensors via the CAN-Bus network. The plurality of controllers receive the user's steering and drive inputs and posts on the CAN-Bus network and generate drive signals to obtain the desired speed and direction of motion of the lawn tractor.

A drive and control system for a lawn tractor includes a CAN-Bus network, a plurality of controllers, a pair of electric transaxles controlled by the plurality of controllers, and one or more steering and drive input devices coupled to respective sensor(s) for sensing user steering and drive inputs. The plurality of controllers communicate with one or more vehicle sensors via the CAN-Bus network. The plurality of controllers receive the user's steering and drive inputs and posts on the CAN-Bus network and generate drive signals to obtain the desired speed and direction of motion of the lawn tractor.

An electrohydraulic system for a work machine includes a pump, a motor fluidly coupled to the pump, a subassembly driven by the motor, and a rate-control valve fluidly coupled to the pump and the motor. The rate-control valve is movable through a range of positions. A present speed of the motor is proportional to a present position of the rate-control valve. The present position of the rate-control valve is adjustable by varying a current supplied to the rate-control valve. The supply of current to the rate-control valve is adjusted based on the difference between the present speed of the motor and a target speed of the motor.

An agricultural harvester has a controller operationally connected to at least the drive mechanism of header and the drive mechanism of the feedrolls to control these drive mechanisms. The controller successively executes a primary and a secondary synchronization procedure, wherein the primary synchronization procedure controls the header and feedroll drive mechanisms such that the header rotating speed and feedroll rotating speed are in a first predetermined ratio range; and the secondary synchronization procedure controls the header and feedroll drive mechanisms such that the header load and the feedroll load approach a second predetermined ratio.

An agricultural harvester has a controller operationally connected to at least the drive mechanism of header and the drive mechanism of the feedrolls to control these drive mechanisms. The controller successively executes a primary and a secondary synchronization procedure, wherein the primary synchronization procedure controls the header and feedroll drive mechanisms such that the header rotating speed and feedroll rotating speed are in a first predetermined ratio range; and the secondary synchronization procedure controls the header and feedroll drive mechanisms such that the header load and the feedroll load approach a second predetermined ratio.

An agricultural spreader system includes a first motor, a second motor, and a valve system coupled to the first motor and to the second motor. The first motor is configured to be driven by a working fluid and to drive a first spreader disc in rotation. The second motor is configured to be driven by the working fluid and to drive a second spreader disc in rotation. The valve system is configured to transition between a series flow arrangement and a parallel flow arrangement. The series flow arrangement is configured to direct the working fluid to the second motor through the first motor. The parallel flow arrangement is configured to direct a first portion of the working fluid to the first motor, and to direct a second portion of the working fluid to the second motor.

An agricultural spreader system includes a first motor, a second motor, and a valve system coupled to the first motor and to the second motor. The first motor is configured to be driven by a working fluid and to drive a first spreader disc in rotation. The second motor is configured to be driven by the working fluid and to drive a second spreader disc in rotation. The valve system is configured to transition between a series flow arrangement and a parallel flow arrangement. The series flow arrangement is configured to direct the working fluid to the second motor through the first motor. The parallel flow arrangement is configured to direct a first portion of the working fluid to the first motor, and to direct a second portion of the working fluid to the second motor.