Patent ID: 6918375
Filing Date: 2005-07-19
Classification: F02M

Abstract:
1. A method for controlling a pulsation resonance point generation region for an opposed type engine, operated with a fuel supplying system, the system comprising: a plurality of fuel delivery pipes of a non-return type having no returning circuit to a fuel tank and having a plurality of injection nozzles, at least one of said delivery pipes having length and a flat portion extending along said length; a plurality of banks having plural cylinders disposed in a horizontal opposed manner or a V type manner at the opposed type engine, the banks formed with the respective fuel delivery pipes; a connection pipe connecting between a pair of said fuel delivery pipes; and a supplying pipe connecting a portion on a fuel tank side with a part of the connection pipe or with directly the other fuel delivery pipe, wherein a period of a resonance phenomenon generated between said pair of said fuel delivery pipes with respect to the pulsation wave generated during fuel injections at the injection nozzles is controlled by adjusting at least one of a rigidity of a wall face of said fuel delivery pipe, a length of the fuel delivery pipe, a fluid route cross-sectional area ratio of the fuel delivery pipe to the connection pipe, or a length of the connection pipe, to render the period of the resonance phenomenon longer to shift a pulsation resonance point out of a low rotation region of the engine.