Provided is an electromagnetic switch device for starter in which an auxiliary relay is provided and which has a small size and can be easily manufactured. The electromagnetic switch device for starter includes: a main contact chamber forming a space in which a pair of main fixed contacts are located and a main movable contact can move; and a sub contact chamber forming a space in which a pair of sub fixed iron cores (A), (B) are located and a sub movable contact can move; and a cylindrical terminal block in which the main contact chamber and the sub coil are arranged so as to be adjacent to each other in the radial direction with a partition wall provided therebetween and separating the sub coil and the main contact chamber from each other.

An electromagnetic switch device for a starter includes a pinion-pushing solenoid for pushing out a pinion toward a ring gear of an engine by a plunger thereof, and a motor-energizing solenoid for energizing the motor. The electromagnetic switch device is configured to detect a magnetic flux change in a magnetic circuit of the motor-energizing solenoid due to displacement or deformation of a core of the motor-energizing solenoid caused when the plunger of the pinion-pushing solenoid abuts against a stopper, to determine a timing to start current supply to the motor-energizing solenoid.

A starter-generator device for a work vehicle having an engine includes a gear set for transmitting power, one or more clutch portions configured to selectively interact with the gear set, an actuator device to power movement of an armature only in a first direction, and a linkage having a first portion extending axially and having a neck region formed as a permanent bend and having a bend radius. The linkage also includes a second portion extending radially from the first portion to a distal end. An actuation pin is connected to the distal end and to the clutch portion such that movement of distal end causes corresponding movement of the clutch portion. Powered movement of the armature moves the distal end in one direction. An elastic return force of the linkage moves the distal end in an opposite direction.

A starter-generator device for a work vehicle having an engine includes a gear set for transmitting power, one or more clutch portions configured to selectively interact with the gear set, an actuator device to power movement of an armature only in a first direction, and a linkage having a first portion extending axially and having a neck region formed as a permanent bend and having a bend radius. The linkage also includes a second portion extending radially from the first portion to a distal end. An actuation pin is connected to the distal end and to the clutch portion such that movement of distal end causes corresponding movement of the clutch portion. Powered movement of the armature moves the distal end in one direction. An elastic return force of the linkage moves the distal end in an opposite direction.

Methods and systems are provided for an isolator. In one example, system may include an isolator comprising a flexible laminated membrane comprising a non-linear torsional stiffness for compensation of axial, lateral, and angular displacements between a drive shaft and a clutch.

Methods and systems are provided for an isolator. In one example, system may include an isolator comprising a flexible laminated membrane comprising a non-linear torsional stiffness for compensation of axial, lateral, and angular displacements between a drive shaft and a clutch.

A starter for an internal combustion engine includes a rotating shaft formed with a helical spline on an outer periphery thereof and which rotates by a rotation of a motor, a pinion gear helically splined to the rotating shaft and movable in an axial direction of the rotating shaft along a tooth surface of the helical spline, a lever receiving member disposed opposing an end surface in an axial direction of the pinion gear, moved by receiving an axial pushing force by a pushing member, and causing the pinion gear to engage with a ring gear of the internal combustion engine by a movement thereof, and a buffer member for restricting a movement of the pinion gear in a rotational direction when the pinion gear moves along the teeth surface of the helical spline.

To suppress generation of noise during cranking, a pinion gear is fixed to a drive shaft of a starter starting an internal combustion engine. The pinion gear rotates a ring gear provided to the internal combustion engine by meshing therewith. The pinion gear includes gear teeth and an annular hollow portion located radially inside of the gear teeth. The annular hollow portion accommodates a vibration absorber to absorb vibration generated in the gear tooth.

To suppress generation of noise during cranking, a pinion gear is fixed to a drive shaft of a starter starting an internal combustion engine. The pinion gear rotates a ring gear provided to the internal combustion engine by meshing therewith. The pinion gear includes gear teeth and an annular hollow portion located radially inside of the gear teeth. The annular hollow portion accommodates a vibration absorber to absorb vibration generated in the gear tooth.

In a starter, current is passed through a solenoid to use the generated electromagnetic force when pushing a pinion gear toward a ring gear, so that the ring gear is engaged with the pinion gear. For this purpose, the starter includes an electromagnetic solenoid, a spring for urging the pinion gear in a direction opposite to that of the electromagnetic solenoid, a connecting member connected to the pinion gear, a stopper for limiting movement of the connecting member to a predetermined position. Being urged by the spring, the pinion gear is disengaged from the ring gear, and the connecting member is retracted to a predetermined position. The starter includes a control circuit that implements control of passing a predetermined current through the solenoid after the disengagement but before retraction of the connecting member to the predetermined position.