FUEL PRESSURE BOOSTER IN NOZZLE OF INTERNAL COMBUSTION ENGINE Russian patent published in 2015 - IPC F02M37/04 F02M57/00 F02M63/00 F02D41/38 

FIELD: engines and pumps.

SUBSTANCE: fuel pressure booster is offered in a housing 1 of which a step hole 12 is provisioned, where a boosting piston 13 with a return spring 14 is located. In the piston 13 a spring-loaded check valve 16 locking fuel passing from the nozzle 6 towards the cover 8 of the housing is located. In front of the locking element of the valve 16 its seat 17 is installed which has a threaded connection with the piston 13. The seat 17 has a through axial hole 18 located opposite to the valve locking element 16 and the throttle lateral opening 19 interconnecting the hole 18 through the hole 21 in the piston 13 with the cavity 22 in the housing 1 where the spring 14 is located. The cavity 22 is interconnected through the throttle hole 24 with the controlled drain valve 25.

EFFECT: decrease by simple means of losses of pressure of the fuel supplied to a nozzle and by that increase of pressure of injection of fuel into engine cylinders for improvement of mix forming process.

2 dwg