| 摘要 |
FIELD: engines and pumps.SUBSTANCE: invention can be used in internal combustion engine fuel feed systems. Disclosed is the fuel feed pump 1 to develop the fuel increased pressure. Said pump 1 comprises housing 10, valves holder 13 to houses intake valve 31, discharge valve 32 and pressure release valve 33. Besides, it includes pump chamber 4 arranged between said intake and discharge valves 31 and 32 and plunger 18 to up or to down the pump chamber pressure. Pressure release valve 33 communicates with the outlet side of discharge valve 32 and makes the valve for fuel return to discharge valve inlet. A portion of channel 52a on intake valve inlet side and channel 52b extending from discharge valve outlet to pressure release valve inlet are isolated from each other in valves holder 13.EFFECT: simplified design, lower production costs.4 cl, 8 dwg |
