Fuel injection device for internal combustion engine, has pressure reservoir that stores fuel during predetermined pressure condition, where fuel is supplied from pressure reservoir in high pressure chamber

摘要

The fuel injection device (1) has a pressure reservoir (2) that stores fuel during a predetermined pressure condition. The pressure boosting device (3) has a control chamber (11), with which a fuel pressure due to inflow and outflow of fuel is increased and decreased. The fuel is supplied from the pressure reservoir in a high pressure chamber (12). An oil pressure piston (8) is moved in accordance with the increasing or decreasing of the fuel pressure in the control chamber.