Two-stroke engine for work equipment and series hybrid device for work equipment incorporating the same

Abstract

To provide a two-stroke engine suitable for hybridization, as a power source for a working machine capable of achieving measures against exhaust emissions while maintaining a small size and light weight, and provide a series hybrid device for a working machine.SOLUTION: A two-stroke engine has a throttle motor (22) for driving a throttle valve (20), a fuel injection device (430) disposed in an intake system (18) including a crank chamber (420), and a control unit (24) for controlling the throttle motor (22) and the fuel injection device. The two-stroke engine is designed to achieve an engine rotation speed of 4,500 rpm to 7,000 rpm when the throttle valve (20) is fully open. The two-stroke engine is operated with the throttle fully open by the control unit (24), and a battery (8) is charged with electric power generated by a generator (6) using the two-stroke engine.SELECTED DRAWING: Figure 2