DI 엔진용 초고압 분배식 연료 분사장치의 개발

So far the distributor type injection pump have been used mainly in IDI passenger-car engines. But very-high-speed DI engines. for light-duty commer-cial vehicles has resulted in a new area of application. For this purpose. the injection pressure and injection rate have had to be increased by a factor of 2~3. with the pump outer dimensions remaineng unchanged. This paper reports on the select methods of injection systems to achieve the high-pressurization. the stability of injection pressure and the parts design process to reinforce the stiffness according to high-pressurization.