Diesel fuel injection system i.e. common-rail injection system, for self-activating combustion engine, has pump with pump casing, and relief valve whose control side comprising plunger space is arranged between roller shaft and pump piston

摘要

#CMT# #/CMT# The system has a high pressure pump (3) with a pump casing in which a pumping cam shaft (4) is supported. The pump cooperates with a pump piston (9) of a pump cylinder (10) over a roller shaft (8). The cylinder moves up and down in an interconnected workspace (12) defined by a pump cylinder head (11). The workspace is connected over a suction valve (13) and a relief valve (16) with a fuel low pressure system and over a non-return valve (14) with a high-pressure system. A control side of the relief valve with a plunger space (17) is between the roller shaft and the pump piston. #CMT#USE : #/CMT# Diesel fuel injection system i.e. common-rail injection system, for a self-activating combustion engine. #CMT#ADVANTAGE : #/CMT# The control side of the relief valve with the plunger space is interconnected between the roller shaft and the pump piston so as to prevent opening of the relief valve by the downward movement of the roller shaft during zero-delivery from the high pressure pump. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a sectional view of a fuel injection system. 3 : High pressure pump 4 : Pumping cam shaft 8 : Roller shaft 9 : Pump piston 10 : Pump cylinder 11 : Pump cylinder head 12 : Interconnected workspace 13 : Suction valve 14 : Non return valve 16 : Relief valve 17 : Plunger space.