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Sensor for mixing ratio of gasoline and alcohol or the like

Abstract

An improved sensor is disclosed which is capable of continuously measuring a ratio of alcohol and gasoline with high precision, irrespective of the ambient temperature, in order to obtain the most appropriate timing of ignition and injection when employed, for example, in an internal combustion engine. The sensor has a cylindrical enclosure having both inlet and outlet openings to act as a passage through which the liquid fuel mixture flows. A transparent column is concentrically disposed in the enclosure, an outer surface of which is at least in partial contact with the fuel mixture. A light emitting diode is placed at one end of the column so that light from the diode enters the column to reach a boundary between the column and the fuel mixture. A photo diode at the other end of the column receives light beams totally reflected back at the boundary to produce an output, the magnitude of which depends on the mixing ratio of the fuel mixture. A temperature compensation means is also provided in the form of a temperature compensation photo diode and an amplifier, in order to maintain a uniform intensity of light beams emitted from the light emitting diode irrespective of changes  More>>
Publication Date:
Jan 14, 1992
Product Type:
Patent
Report Number:
CA 1294150; A
Reference Number:
CANM-92-003715; EDB-92-125248
Resource Relation:
Patent File Date: 14 May 1987
Subject:
33 ADVANCED PROPULSION SYSTEMS; FUEL INJECTION SYSTEMS; CONTROL SYSTEMS; GASOHOL; MIXING; DESIGN; LIGHT EMITTING DIODES; PHOTODIODES; FUEL SYSTEMS; FUELS; LIQUID FUELS; SEMICONDUCTOR DEVICES; SEMICONDUCTOR DIODES; 330100* - Internal Combustion Engines
OSTI ID:
5073629
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: PPN: CA 537085
Availability:
Micromedia Ltd., Technical Information Centre, 165 Hotel de Ville, Place du Portage, Phase 2, Hull, Quebec, Canada J8X 3X2.
Submitting Site:
CANM
Size:
Pages: (26 p)
Announcement Date:

Citation Formats

Miyata, Shigeru, and Matsubara, Yoshihiro. Sensor for mixing ratio of gasoline and alcohol or the like. Canada: N. p., 1992. Web.
Miyata, Shigeru, & Matsubara, Yoshihiro. Sensor for mixing ratio of gasoline and alcohol or the like. Canada.
Miyata, Shigeru, and Matsubara, Yoshihiro. 1992. "Sensor for mixing ratio of gasoline and alcohol or the like." Canada.
@misc{etde_5073629,
title = {Sensor for mixing ratio of gasoline and alcohol or the like}
author = {Miyata, Shigeru, and Matsubara, Yoshihiro}
abstractNote = {An improved sensor is disclosed which is capable of continuously measuring a ratio of alcohol and gasoline with high precision, irrespective of the ambient temperature, in order to obtain the most appropriate timing of ignition and injection when employed, for example, in an internal combustion engine. The sensor has a cylindrical enclosure having both inlet and outlet openings to act as a passage through which the liquid fuel mixture flows. A transparent column is concentrically disposed in the enclosure, an outer surface of which is at least in partial contact with the fuel mixture. A light emitting diode is placed at one end of the column so that light from the diode enters the column to reach a boundary between the column and the fuel mixture. A photo diode at the other end of the column receives light beams totally reflected back at the boundary to produce an output, the magnitude of which depends on the mixing ratio of the fuel mixture. A temperature compensation means is also provided in the form of a temperature compensation photo diode and an amplifier, in order to maintain a uniform intensity of light beams emitted from the light emitting diode irrespective of changes in ambient temperature. 8 figs.}
place = {Canada}
year = {1992}
month = {Jan}
}