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

Fuel management for vehicles equipped with multiple tanks for different grades of fuel

A fuel and fuel tank technology, applied in the fuel system, fuel injection control, gaseous engine fuel, etc., can solve problems such as damage to the engine, deflagration, etc.

Inactive Publication Date: 2011-01-26
EXXON RES & ENG CO
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, engine manufacturers try to limit as much as possible the phenomenon of autoignition, which often results in deflagration and possible damage to the engine when fuel with insufficient deflagration resistance is combusted in the engine

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
  • Fuel management for vehicles equipped with multiple tanks for different grades of fuel
  • Fuel management for vehicles equipped with multiple tanks for different grades of fuel
  • Fuel management for vehicles equipped with multiple tanks for different grades of fuel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] see figure 1 , which shows a simplified block diagram of a fuel management system of one embodiment of the present invention. A main fuel tank 2 for holding intermediate grade research octane number (RON) fuel is included in the associated vehicle. In this example, the intermediate grade RON (hereinafter referred to as IRON) fuel is RON 91 . Variable ratio pump 24 is operable to deliver IRON fuel from main fuel tank 2 to on-board separation (OBS) unit 4 in volumetric quantities of 0.5-1.5 grams per second (g / s). The OBS unit 4 is operable to classify IRON fuel into two grades, ie one is a high research octane number (HRON) grade fuel and the other is a low research octane number (LRON) grade fuel. The OBS unit 4 can be provided by separation devices, membranes and ceramic-coated monoliths, for example using silica gel distillation. A preferred embodiment for the OBS unit 4 will be discussed in more detail below. Additionally, as will be explained in further detail b...

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

No PUM Login to View More

Abstract

A fuel management system mounted on a vehicle is operative to feed an individual grade or a mixture of grades of relatively low, intermediate, and high RON fuels, from respective tanks to an associated internal combustion engine. The system includes an on board separation unit (OBS unit) for receiving and separating intermediate RON fuel, from an IRON tank into low and high RON fuels, LRON and HRON, respectively, for delivery to LRON and HRON tanks, respectively. The production rate of the LRON and HRON fuels by the OBS unit is controlled to substantially match the consumption requirements of the engine at any given time for the LRON and HRON fuels.

Description

technical field [0001] The present invention generally relates to systems using multiple fuels of different grades, such as different Research Octane Numbers (RON) for spark-ignition engines (gasoline), RON for compression-ignition engines (diesel), Depending on the cetane number, the fuels are used individually or in predetermined blends to operate the internal combustion engine. Background technique [0002] Petroleum refiners and engine manufacturers are constantly challenged to continuously improve their products in order to meet increasingly stringent government efficiency and emissions requirements and customers' expectations for enhanced performance. For example, in producing fuel suitable for use in internal combustion engines, petroleum producers blend various hydrocarbon-containing oil streams in order to produce fuels that meet government combustion emissions regulations and engine manufacturer performance fuel standards such as research octane ratings. (RON) pro...

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
Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00F02B43/00
CPCF02D19/0628F02D19/0649F02D19/0671F02D19/0621F02D19/0692F02D19/081Y02T10/36F02D19/0689F02D41/0025F02D19/0665Y02T10/30
Inventor B·森古普塔K·库马兰W·韦斯曼R·D·帕特里德格
Owner EXXON RES & ENG CO