DIESEL ENGINE FUEL-FEED SYSTEM Russian patent published in 2001 - IPC

FIELD: mechanical engineering; diesel engines. SUBSTANCE: proposed fuel-feed system has high-pressure pump, delivery valve, make up main line, additional channel and non-return valve with relief belt. Pump is connected with make-up main line and is connected with nozzle through delivery valve and high-pressure pipe. Non-return valve is arranged in additional channel one end of which is connected with high-pressure pipe and other end with make-up main line. Other end of additional channel constantly connected with make-up main line is provided with restrictor made in form of radial and axial holes in body of non-return valve. EFFECT: improved efficiency of fuel injection by increasing initial injection pressure and decreasing harmful volume in delivery main line. 2 dwg