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Title: Fuel system for rotary distributor fuel injection pump

Abstract

In a fuel injection pump having a drive shaft, a pump rotor driven by the drive shaft, reciprocating pumping means with periodic intake and pumping strokes to periodically receive an intake charge of fuel and deliver fuel at high pressure for fuel injection is described; a distributor head with a plurality of angularly spaced distributor outlets, the pump rotor providing a distributor rotor with a distributor port connected to the pumping means, the distributor rotor being rotatably mounted in the distributor head for sequential registration of the distributor port with the distributor outlets for distributing said high pressure delivery of fuel thereto; a fuel system for supplying fuel to the pumping means, having an end chamber at one end of the pump rotor and a fuel supply pump driven by the drive shaft and having an inlet and outlet, the supply pump outlet being connected to the end chamber for supplying fuel thereto, and a pressure regulator for regulating the fuel pressure in the end chamber; and a control valve connected between the pumping means and the end chamber and selectively opened during the intake strokes to supply fuel to the pumping means from the end chamber and during themore » pumping strokes to spill fuel from the pumping means into the end chamber to terminate said high pressure delivery of fuel; the improvement wherein the fuel system comprises a fuel return passage connected in series with the end chamber downstream thereof, wherein the pressure regulator is mounted in the return passage for regulating the upstream fuel pressure, including the upstream fuel pressure within the end chamber, and is connected for conducting excess fuel for return to the supply pump inlet, and wherein the supply pump is driven by the drive shaft to supply fuel at a rate exceeding the rate of said high pressure delivery of fuel for fuel injection and to provide excess fuel flow continuously through the end chamber and return passage to the pressure regulator.« less

Inventors:
;
Publication Date:
OSTI Identifier:
6492026
Patent Number(s):
US 5215060; A
Application Number:
PPN: US 7-730676
Assignee:
Stanadyne Automotive Corp, Windsor, CT (United States)
Resource Type:
Patent
Resource Relation:
Patent File Date: 16 Jul 1991
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; INTERNAL COMBUSTION ENGINES; FUEL SYSTEMS; MECHANICAL SHAFTS; PUMPS; UNSTEADY FLOW; VALVES; CONTROL EQUIPMENT; ENGINES; EQUIPMENT; FLOW REGULATORS; FLUID FLOW; HEAT ENGINES; MACHINE PARTS; SHAFTS; 330603* - Vehicle Design Factors- Engine System

Citation Formats

Klopfer, K H, and Kelly, W W. Fuel system for rotary distributor fuel injection pump. United States: N. p., 1993. Web.
Klopfer, K H, & Kelly, W W. Fuel system for rotary distributor fuel injection pump. United States.
Klopfer, K H, and Kelly, W W. Tue . "Fuel system for rotary distributor fuel injection pump". United States.
@article{osti_6492026,
title = {Fuel system for rotary distributor fuel injection pump},
author = {Klopfer, K H and Kelly, W W},
abstractNote = {In a fuel injection pump having a drive shaft, a pump rotor driven by the drive shaft, reciprocating pumping means with periodic intake and pumping strokes to periodically receive an intake charge of fuel and deliver fuel at high pressure for fuel injection is described; a distributor head with a plurality of angularly spaced distributor outlets, the pump rotor providing a distributor rotor with a distributor port connected to the pumping means, the distributor rotor being rotatably mounted in the distributor head for sequential registration of the distributor port with the distributor outlets for distributing said high pressure delivery of fuel thereto; a fuel system for supplying fuel to the pumping means, having an end chamber at one end of the pump rotor and a fuel supply pump driven by the drive shaft and having an inlet and outlet, the supply pump outlet being connected to the end chamber for supplying fuel thereto, and a pressure regulator for regulating the fuel pressure in the end chamber; and a control valve connected between the pumping means and the end chamber and selectively opened during the intake strokes to supply fuel to the pumping means from the end chamber and during the pumping strokes to spill fuel from the pumping means into the end chamber to terminate said high pressure delivery of fuel; the improvement wherein the fuel system comprises a fuel return passage connected in series with the end chamber downstream thereof, wherein the pressure regulator is mounted in the return passage for regulating the upstream fuel pressure, including the upstream fuel pressure within the end chamber, and is connected for conducting excess fuel for return to the supply pump inlet, and wherein the supply pump is driven by the drive shaft to supply fuel at a rate exceeding the rate of said high pressure delivery of fuel for fuel injection and to provide excess fuel flow continuously through the end chamber and return passage to the pressure regulator.},
doi = {},
url = {https://www.osti.gov/biblio/6492026}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {6}
}