Patent ID: 6505608
Filing Date: 2003-01-14
Classification: F02D,F02M,F04B

Abstract:
A fuel supply system for an engine having a first and a second opposed cylinder arrays each equipped with a fuel injection valve for injecting fuel thereinto, wherein the fuel supply system comprises:a low pressure pump for transferring fuel from a fuel tank; a high pressure fuel pump which pressurizes fuel fed from the low pressure pump and comprises a single plunger operating to reciprocate synchronously with the engine; a first and a second fuel rails provided in association with the first and the second cylinder arrays, respectively; a pipe line which leads off from the high pressure fuel pump, is diverged to two pipe lines and connected to the first and the second fuel rails; and a first and a second orifices interposed in the pipe line, wherein the high pressure fuel pump has a drive mechanism which comprises a rotational power source rotating at one half the rotational speed of a camshaft of the engine and a cam for converting the rotational power into the reciprocal motion of the plunger, and wherein one rotational motion of the camshaft causes the plunger to reciprocate by one half the number of the combustion cylinders.