FUEL INJECTION METHOD AND DEVICE OF INTERNAL COMBUSTION ENGINE AND FUEL INJECTION VALVE USED FOR IT

PROBLEM TO BE SOLVED: To near positions of a throttle valve and an injection valve to each other, to reflect change of air capacity speedily to fuel distribution and to improve operativity of an engine by installing the throttle valve to adjust air capacity and the injection valve to adjust fuel together on a collector chamber. SOLUTION: A fuel injection valve 1 furnished with a plural number of injection ports is installed on a collector chamber 9 with a throttle valve assembly body installed on its inlet and with a plural number of branch pipes 6 to branch and supply air to each cylinder formed on its outlet. Thereafter, fuel is supplied to the fuel injection valve 1 after it is regulated in pressure by a pressure regulator 2. Consequently, a control diaphragm 2a is controlled by a balance of control pressure in a pressure chamber 2e introduced through a pipe 2h and force of a spring 2c by the regulator 2. Accordingly, fuel pressure is controlled by opening and closing a fuel outlet of a nipple 2i by a valve 2b. The injection valve 1 distributes and injects fuel measured by three orifices to an opening part 7 of each of the branch pipes 6.