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Title: Fuel injection device and method

Abstract

A fuel injection system and method provide for shaping a combustion plume within a combustion chamber to effectively recirculate hot combustion gases for stable combustion conditions while providing symmetrical combustion conditions. Char and molten slag are passed to the outer boundary layer to complete combustion of char while permitting initial substoichiometric combustion in a reductive atmosphere for reducing discharge of nitrogen oxides. Shaping of the plume is accomplished by an axially adjustable pintle which permits apportionment of driving pressure between elements which contribute tangential and those which contribute radial directional components to oxidant flow entering the combustion chamber.

Inventors:
Publication Date:
OSTI Identifier:
6756060
Application Number:
ON: DE84014320
Assignee:
Dept. of Energy ERA-09-035742; EDB-84-118085
DOE Contract Number:
W-31-109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 42 ENGINEERING; 30 DIRECT ENERGY CONVERSION; FUEL INJECTION SYSTEMS; DESIGN; BOUNDARY LAYERS; CHARS; COMBUSTION CHAMBERS; NITROGEN OXIDES; PLUMES; SLAGS; CHALCOGENIDES; FUEL SYSTEMS; LAYERS; NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PYROLYSIS PRODUCTS 330100* -- Internal Combustion Engines; 421000 -- Engineering-- Combustion Systems; 300101 -- MHD Generators-- Design & Development

Citation Formats

Carlson, L.W.. Fuel injection device and method. United States: N. p., 1983. Web.
Carlson, L.W.. Fuel injection device and method. United States.
Carlson, L.W.. 1983. "Fuel injection device and method". United States. doi:.
@article{osti_6756060,
title = {Fuel injection device and method},
author = {Carlson, L.W.},
abstractNote = {A fuel injection system and method provide for shaping a combustion plume within a combustion chamber to effectively recirculate hot combustion gases for stable combustion conditions while providing symmetrical combustion conditions. Char and molten slag are passed to the outer boundary layer to complete combustion of char while permitting initial substoichiometric combustion in a reductive atmosphere for reducing discharge of nitrogen oxides. Shaping of the plume is accomplished by an axially adjustable pintle which permits apportionment of driving pressure between elements which contribute tangential and those which contribute radial directional components to oxidant flow entering the combustion chamber.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1983,
month =
}
  • A device for fuel injection in an internal combustion engine which has an intake system is described, comprising: (a) fuel injector means, fitted to the intake system for injecting fuel into the intake system according to an opening and closing of the fuel injector means; (b) means for supplying pressurized fuel to the fuel injector means; (c) means for controlling a pressure difference between a pressure of the pressurized fuel which is supplied to the fuel injector means and a current value of atmospheric pressure to be substantially equal to a determinate value, (d) means for calculating an actual fuelmore » injection time interval by: (1) determining a basic time interval for fuel injection, according to engine operational parameters and a certain atmosphere pressure; (2) if the current value of atmospheric pressure is higher than the certain atmospheric pressure value, then applying a reduction correction amount which decreases the basic fuel injection time interval to the basic fuel injection time interval, to derive the actual fuel injection time interval; and (3) if the current value of atmospheric pressure is not higher than the certain atmospheric pressure, then applying an increase correction amount which has an absolute value that diminishes as the absolute value of the pressure in the intake system diminishes to the basic fuel injection time interval, to derive the actual fuel injection time interval; and (e) means for controlling the fuel injection means to be open for substantially actual fuel injection time interval.« less
  • This patent describes a fuel injection pump device which comprises: a delivery valve communicated with a pressurizing chamber formed in a housing, loaded by a spring and communicated with a fuel injection nozzle; a plunger with its one end facing the pressurizing chamber and the other end operatively connected with a cam which is driven by an engine; a fuel chamber provided so as to surround the plunger in the housing; an oil passage formed in the plunger so that its one end communicates to the pressurizing chamber and the other end communicates to the fuel chamber; a control sleevemore » slidably mounted on the outer periphery of the plunger in the fuel chamber; a control groove provided on the outer peripheral surface of the plunger for communicating the pressurizing chamber and fuel chamber to each other by way of the oil passages or for interrupting the same. The control groove has at least longitudinally directed edges and inclined edges provided with relation to the axis of the plunger; control ports provided on the control sleeve and communicating the control groove to the fuel chamber when a fuel injection is completed; an injection quantity control member supported on the housing for controlling a fuel injection quantity; an injection timing control member for moving the control sleeve in the axial direction of the plunger; fuel injection control means for controlling the injection quantity control member and the injection timing control member in accordance with signals from operating state information sources, the fuel injection means is composed so as to advance the injection timing control member on the basis of the information of the engine in a high speed region from the operating state information sources.« less
  • A method is described of controlling a fuel injection timing of a diesel engine. The maximum injection timing most suitable for the time when the fuel injection reaches the maximum quantity is determined as commensurate to at least an engine speed and an intake air pressure, and an injection timing is controlled in accordance with the maximum injection timing. The method comprises: a step of determining the basic maximum injection timing most suitable for the time when the fuel injection reaches the maximum quantity under the atmospheric pressure as commensurate to an engine speed; and a step of correcting themore » basic maximum injection timing at least by an intake air pressure to provide the maximum injection timing.« less
  • A fuel injection system and method provide for shaping a combustion plume within a combustion chamber to effectively recirculate hot combustion gases for stable combustion conditions while providing symmetrical combustion conditions. Char and molten slag are passed to the outer boundary layer to complete combustion of char while permitting initial substoichiometric combustion in a reductive atmosphere for reducing discharge of nitrogen oxides. Shaping of the plume is accomplished by an axially adjustable pintle which permits apportionment of driving pressure between elements which contribute tangential and those which contribute radial directional components to oxidant flow entering the combustion chamber.
  • A fuel injection system and method provide for shaping a combustion plume within a combustion chamber to effectively recirculate hot combustion gases for stable combustion conditions while providing symmetrical combustion conditions. Char and molten slag are passed to the outer boundary layer to complete combustion of char while permitting initial substoichiometric combustion in a reductive atmosphere for reducing discharge of nitrogen oxides. Shaping of the plume is accomplished by an axially adjustable pintle which permits apportionment of driving pressure between elements which contribute tangential and those which contribute radial directional components to oxidant flow entering the combustion chamber.