Fuel injection system for internal combustion engine

Abstract

To provide a fuel injection system that can efficiently supply high pressure fuel to fuel injectors of an internal combustion engine, whose design and manufacture are made easy by simplifying its mechanical configuration, and which has excellent maintainability during repair and detachment. A fuel injection system for an internal combustion engine comprises: a cassette type pump that is attachable to and detachable from an internal combustion engine disposed with a cam and which pressurizes fuel to a high pressure and pressure-feeds the high pressure fuel by a plunger that reciprocally moves in accompaniment with rotation of the cam, and pressure-feeds the high pressure fuel; a common rail that accumulates the high pressure fuel that is pressure-fed from the cassette type pump and supplies the high pressure fuel with respect to plural fuel injectors; a pressure regulator that regulates the pressure inside the common rail; and pressure control means that controls the pressure regulator on the basis of the pressure value inside the common rail.

Dependencies are inferred from the claim text.