Patent ID: 9051925
Filing Date: 2015-06-09
Classification: F02M,F04B

Abstract:
1. A fuel injection pump having a variable pressure chamber, comprising: a barrel inserted and installed within a pump housing; a plunger slidably coupled to an inside of the barrel; and an upper cover coupled to an upper surface of the pump housing, wherein the plunger closes a discharge hole of the barrel to begin a pressure increase of fuel to inject high pressure fuel, the fuel injection pump further comprising: a pressure adjustment means comprising: a contact plug of which a lower portion is inserted and installed in the upper cover; a cylinder of which a lower portion is inserted and installed in the contact plug and having the variable pressure chamber formed inside thereof; a main fuel pressing hole formed in the upper cover and the barrel to connect the variable pressure chamber of the cylinder and a plunger insertion hole of the barrel; a piston installed in the variable pressure chamber of the cylinder to enable an upward and downward sliding motion thereof; and a manual pressure adjustment unit installed on an upper portion of the cylinder to enable a vertical height adjustment to elastically support an upper portion of the piston.