Pressure Control Valve and advance in Injection Pumps for Diesel Engines

摘要

Pressure Control Valve and advance in Injection Pumps for Diesel Engines, comprising a fixed external body (1), coupled to the Injection pump, and a Mobile Body (7) defines a plunger Regulator deplazable rotationally housed in a Central conduit (2) of said Body External.The external body (1) and a piston (7) are structurally coupled between respective sections from proximal screw (2a, 7a). The external body (1) has a Hole (4) of fuel Input in the distal section (2c) of the central conduit (2) and a Hole (5) Drain the fuel from the Intermediate section (2b) of the central conduit (2).The distal section (2c) of the central conduit (2), where it flows into the Hole (4) of fuel Inlet, and the distal section (7D) of the piston (7), respective conotruncal conformations are complementary.Between the distal section (2c) of the central conduit (2) of the external body (1) and the distal section (7D) of the piston (7) defines an annular Space (14) for the flow of fuel from the orifice (4) to the Drain Hole (5).The Tapered section (7D) of the piston (7) is projected from a Cylindrical portion (7c), and jointly define a limiter of fuel flow through the annular Space (14) According to their position relative to the Inlet (4) and Drainage (5).