PUMP DELIVERY PRESSURE CONTROL DEVICE TO FEED FUEL INTO INTERNAL COMBUSTION ENGINE Russian patent published in 2005 - IPC

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: invention relates to fuel devices of internal combustion engines. Proposed pressure control device contains electromagnetically controlled valve with supply pipeline connected with pump delivery side, drain pipeline, gate between supply and drain pipelines, electromagnet with controllable excitation to control armature which operates the gate, and reducers to decrease delivery pressure fluctuations of said pump. Reducers have cutoff chamber to cut off hydraulic pressure between supply and drain pipelines. Said chamber is of volume to decrease action of hydraulic pressure fluctuations onto armature provided with cylindrical rod part of which is arranged in said chamber. Said is connected with rod by shoulder to be smaller in diameter than rod. So volume of chamber increases, and section of hydraulic pressure in chamber onto rod decreases.

EFFECT: provision of simple and reliable device to control delivery pressure of pump.

16 cl, 14 dwg