Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for reducing emissions from high pressure common rail fuel injection diesel engines

a technology of diesel engines and fuel injection, applied in the direction of engines, mechanical equipment, fuels, etc., can solve the problems of reducing engine output, degrading vehicle performance, and high smoke production

Inactive Publication Date: 2002-10-17
EXXON RES & ENG CO
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A drawback of using such fuel in such conventional fuel system engines can be high smoke production.
It is also generally acknowledged, however, that the use of low density diesel fuels in conventional fuel system diesels reduces engine output and degrades vehicle performance.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for reducing emissions from high pressure common rail fuel injection diesel engines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] It has been discovered that compression ignition engines utilizing high pressure common rail fuel systems can be operated with good performance and reduced emissions of hydrocarbons, particulate matter and CO by the use of low density fuel characterized as a fuel having density of about 0.83 g / cc or less, preferably about 0.825 g / cc or less, more preferably about 0.82 g / cc or less, a kinematic viscosity of about 3 cSt or less at 40.degree. C., preferably about 2.6 cSt or less at 40.degree. C., more preferably about 2.1 cSt or less at 40.degree. C. Diesel fuel refers to an essentially hydrocarbon fuel which can contain various amounts of oxygen, sulfur, nitrogen and various trace elements, with a distillation curve falling in the range of about 140.degree. C. to 400.degree. C.

[0008] Preferably the fuel also has a sulfur content of about 0.05 wt % or less, more preferably about 0.04 wt % or less, still more preferably about 0.03 wt % or less. Sulfur can be measured by x-ray flu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Temperatureaaaaaaaaaa
Angleaaaaaaaaaa
Densityaaaaaaaaaa
Login to View More

Abstract

The emission from high pressure common rail fuel system compressor ignition engines is reduced by using fuel in said engine a diesel fuel characterized as having a sulfur content of about 0.05 wt % or less, a density of about 0.83 or less and a viscosity of about 3 cSt or less at 40° C.

Description

[0001] 1. Field of the Invention[0002] This invention relates to the operation of compression ignition engines, i.e., diesel engines, utilizing high pressure common rail fuel systems and to the fuels used to run such engines.[0003] 2. Description of the Related Art[0004] In the operation of compression ignition diesel engines fueled with conventional fuel systems, i.e., high pressure diesel injectors, the fuel used is a distillate fuel which is higher viscosity and density than most other transportation distillate fuels, e.g., gasoline, jet fuel, etc. A drawback of using such fuel in such conventional fuel system engines can be high smoke production.[0005] It is generally known that low density fuels are environmentally desirable. These fuels are also often associated with their lower aromatic content, lower sulfur content, lower T.sub.90 and lower content of polynuclear aromatic compounds. Sulfur and aromatics are typically reduced by incorporating hydrogen into the fuel molecules ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C10L1/08F02M63/00C10L10/08C10L10/12C10L10/14C10L10/16F02B3/06
CPCF02B3/06C10L1/08
Inventor SCHILOWITZ, ALAN MARKRICKEARD, DAVID JOHNBATEMAN, JOHN RICHARDMANN, NICHOLAS
Owner EXXON RES & ENG CO