| 摘要 |
#CMT# #/CMT# The pump (2) has a pump housing (3) and pump elements (8, 9) comprising a high pressure chamber. A suction valve (50, 100) comprises a suction valve piston that includes ends in which a closure body and a spring plate (76) are provided, respectively. A suction valve spring is pre-stressed in a suction valve spring chamber (75) against the piston. A surface of the spring plate of the pump elements stays in connection with a plunger area (85) of the pump elements, where the surface is turned towards the associated suction valve spring chamber. #CMT# : #/CMT# An independent claim is also included for a method for operation of a fuel high-pressure pump for a fuel injection system of an internal-combustion engine. #CMT#USE : #/CMT# Fuel high-pressure pump for a fuel injection system of an internal-combustion engine. #CMT#ADVANTAGE : #/CMT# The surface of the spring plate of the pump elements stays in connection with the plunger area of the pump elements, where the surface is turned towards the associated suction valve spring chamber, thus reducing opening pressure of the suction values, providing better filling of the high pressure chamber while opening and/or reduction of suction valve opening pressure by a light resistance, and hence reducing unwanted pressure pulsation in operation of the fuel high-pressure pump. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a sectional view of a fuel high-pressure pump. 2 : Fuel high-pressure pump 3 : Pump housing 8, 9 : Pump elements 50, 100 : Suction valves 75, 105 : Suction valve spring chambers 76, 106 : Spring plates 85, 115 : Plunger areas. |
