DEVICE FOR INJECTING FUEL AT HIGH PRESSURE WITH HYDRAULIC CONTROL OF SPOOL DISPLACEMENT, AND INTERNAL COMBUSTION ENGINE Russian patent published in 2005 - IPC

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: proposed fuel injection device for internal combustion engine has high-pressure fuel accumulator connected with nozzle through three-way two-position 3/2 distributor. Said distributor is furnished with spool connecting supply pipeline with high-pressure fuel pipe or with unloading fuel pipe terminating in fuel tank. Spool is furnished with members on its end parts pointed to corresponding travel limiters and damping its displacement. Internal combustion engine with fuel injection device furnished with high-pressure accumulator is connected with nozzles through three-way two-position distributor (3/2-distributor). Spool is provided to connect supply pipeline with high-pressure fuel pipe or with unloading fuel pipe terminating in fuel tank. Spool is furnished with members on its end parts pointed to corresponding travel limiters and damping its displacement.

EFFECT: increased service life of spool and improved performance characteristics of internal combustion engine.

13 cl, 2 dwg