Injection device for internal-combustion engine of e.g. lawn-mower, has actuating device comprising actuators for operating fuel pump and pneumatic actuator, where actuators are manufactured from magnetic form memory material

摘要

The device has a compact injection module (2) comprising a fuel pump (20a), a pressure controller (20b), an injector (20c) and a pneumatic actuator (20d). An actuating device comprising actuators (22, 23) operates the fuel pump and the pneumatic actuator, where the actuators are manufactured from a magnetic form memory material. The actuator (22) is connected with a pump piston (26) of the fuel pump, and the actuator (23) is connected with a closing member (35) of the pneumatic actuator. Resetting elements (28, 36) reset the actuator after removing the magnetic field.