JPH05288675A - Mtbe detecting sensor and fuel-property detecting apparatus - Google Patents
Mtbe detecting sensor and fuel-property detecting apparatusInfo
- Publication number
- JPH05288675A JPH05288675A JP8727992A JP8727992A JPH05288675A JP H05288675 A JPH05288675 A JP H05288675A JP 8727992 A JP8727992 A JP 8727992A JP 8727992 A JP8727992 A JP 8727992A JP H05288675 A JPH05288675 A JP H05288675A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- mtbe
- infrared
- methyl
- butyl ether
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims abstract description 58
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims description 35
- 230000005855 radiation Effects 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 abstract description 8
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000003502 gasoline Substances 0.000 description 31
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- AQEFLFZSWDEAIP-UHFFFAOYSA-N di-tert-butyl ether Chemical compound CC(C)(C)OC(C)(C)C AQEFLFZSWDEAIP-UHFFFAOYSA-N 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 229910004613 CdTe Inorganic materials 0.000 description 1
- 229910000661 Mercury cadmium telluride Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3581—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using far infrared light; using Terahertz radiation
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガソリンに、代替燃料
を適宜、又は、オクタン価向上、排ガス浄化を目的とし
てＭＴＢＥを添加した混合ガソリンを使用する自動車に
用いる、ＭＴＢＥ検出センサ及び燃料性状検出装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an MTBE detection sensor and a fuel property detection device for use in a vehicle using gasoline as an alternative fuel, or mixed gasoline containing MTBE added for the purpose of improving octane number and exhaust gas purification. Regarding
【０００２】[0002]
【従来の技術】ガソリン重質度と屈折率とが相関関係に
あることを利用し、発光素子で発光させた光を、ガソリ
ンに接触する様に配したプリズムの境界面で反射させ、
受光素子の出力変化から、ガソリン重質度（芳香族の容
積％）やメタノール混合比を検出する燃料性状検出装置
が従来より知られている。2. Description of the Related Art Utilizing the fact that gasoline heaviness and refractive index are in correlation, light emitted from a light emitting element is reflected at a boundary surface of a prism arranged so as to come into contact with gasoline,
2. Description of the Related Art A fuel property detecting device has been conventionally known that detects gasoline heavyness (volume ratio of aromatics) and methanol mixing ratio from a change in output of a light receiving element.
【０００３】[0003]
【発明が解決しようとする課題】しかるに、従来の燃料
性状検出装置では、設定した添加物（例えばメタノー
ル）以外の添加物（例えばメチル- ｔ- ブチルエーテ
ル）が添加されると、添加量- 屈折率特性が対応しなく
なり、正しいガソリン重質度が検出できなくなるという
欠点がある。本発明の第１の目的は、メチル- ｔ- ブチ
ルエーテルの混合割合が簡単に検出できるＭＴＢＥ検出
センサの提供にあり、第２の目的は、メチル- ｔ- ブチ
ルエーテルが添加されても液体燃料の燃料性状を正しく
求める事ができる燃料性状検出装置の提供にある。However, in the conventional fuel property detecting device, when an additive (for example, methyl-t-butyl ether) other than the set additive (for example, methanol) is added, the addition amount-refractive index There is a drawback that the characteristics do not correspond and the correct gasoline heavyness cannot be detected. A first object of the present invention is to provide an MTBE detection sensor capable of easily detecting the mixing ratio of methyl-t-butyl ether, and a second object of the present invention is to provide a fuel for liquid fuel even if methyl-t-butyl ether is added. The purpose of the present invention is to provide a fuel property detection device capable of accurately determining the property.
【０００４】[0004]
【課題を解決するための手段】上記課題の解決のため、
本発明は、以下の構成を採用した。 （１）液体燃料が通過する、赤外線透過性の燃料管路
と、該燃料管路の一方外方側に配される赤外線放射源
と、前記燃料管路の他方外方側に配される赤外線量検出
器と、波長８μｍ付近の赤外線を選択的に透過させる特
性を有し、前記赤外線放射源と赤外線量検出器との間に
配されるバンドパスフィルターとを備え、該検出器が送
出する電気出力に基づいて、適宜、添加されるメチル-
ｔ- ブチルエーテルの混合割合を検出する。 （２）液体燃料の屈折率変化から得られる屈折率関連デ
ータに基づいて燃料性状を求める燃料性状検出装置にお
いて、前記屈折率関連データを、上記（１）のＭＴＢＥ
検出センサで検出されるＭＴＢＥ混合割合に応じて補正
する。[Means for Solving the Problems] In order to solve the above problems,
The present invention has the following configurations. (1) Infrared-permeable fuel pipeline through which liquid fuel passes, infrared radiation source arranged on one outer side of the fuel pipeline, and infrared radiation arranged on the other outer side of the fuel pipeline And a bandpass filter having a characteristic of selectively transmitting infrared rays having a wavelength of around 8 μm and arranged between the infrared radiation source and the infrared ray quantity detector, and the detector sends the quantity. Methyl added as appropriate based on the electrical output
The mixing ratio of t-butyl ether is detected. (2) In the fuel property detecting device for determining the fuel property based on the refractive index related data obtained from the change in the refractive index of the liquid fuel, the refractive index related data is converted into the MTBE of the above (1).
Correction is made according to the MTBE mixing ratio detected by the detection sensor.
【０００５】[0005]
〔請求項１について〕赤外線放射源から放射される赤外
線は、燃料管路を透過したのちバンドパスフィルターに
より波長８μｍ付近のものに絞られるか、バンドパスフ
ィルターにより波長８μｍ付近のものに絞られたのち燃
料管路を透過して赤外線量検出器に到達する。ここで、
メチル- ｔ- ブチルエーテルは、波長８μｍ付近に吸収
域を有するので、液体燃料中のメチル- ｔ- ブチルエー
テルの含有量が多くなる程、赤外線量検出器の電気出力
は低下する。この為、電気出力に基づいて、メチル- ｔ
- ブチルエーテルの混合割合が検出できる。 〔請求項２について〕液体燃料の屈折率変化から得られ
る屈折率関連データは、ＭＴＢＥ検出センサで検出され
るＭＴＢＥ混合割合に応じて補正されるので、メチル-
ｔ- ブチルエーテルの影響を相殺した液体燃料の燃料性
状が検出できる。[Claim 1] The infrared radiation emitted from the infrared radiation source is passed through the fuel line and then narrowed down to a wavelength of around 8 μm by a bandpass filter or narrowed down to a wavelength of around 8 μm by a bandpass filter. After that, it passes through the fuel pipe and reaches the infrared amount detector. here,
Since methyl-t-butyl ether has an absorption region near a wavelength of 8 μm, the electrical output of the infrared detector decreases as the content of methyl-t-butyl ether in the liquid fuel increases. Therefore, based on the electrical output, methyl-t
-The mixing ratio of butyl ether can be detected. [Claim 2] Since the refractive index related data obtained from the change in the refractive index of the liquid fuel is corrected according to the MTBE mixing ratio detected by the MTBE detection sensor, methyl-
It is possible to detect the fuel property of the liquid fuel that cancels the influence of t-butyl ether.
【０００６】[0006]
【実施例】つぎに、本発明の第１実施例（請求項１に対
応）を図１〜図３に基づいて説明する。図１に示す如
く、ＭＴＢＥ検出装置Ａは、液体燃料１２が通過する燃
料管路１と、燃料管路１の一方外方側に配される遠赤外
線ランプ２と、燃料管路１の他方外方側に配される、光
学フィルター３、凸レンズ４、及び赤外光検出器５と、
赤外光検出器５が送出する電気出力が入力される検出回
路６とを具備する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of the present invention (corresponding to claim 1) will be described with reference to FIGS. As shown in FIG. 1, the MTBE detection device A includes a fuel conduit 1 through which a liquid fuel 12 passes, a far-infrared lamp 2 arranged on one outer side of the fuel conduit 1, and the other outside of the fuel conduit 1. An optical filter 3, a convex lens 4, and an infrared light detector 5, which are arranged on one side,
The infrared light detector 5 is provided with a detection circuit 6 to which an electric output transmitted is input.
【０００７】燃料タンクとエンジン間を連絡する燃料配
管１１の適所に配設される燃料管路１は、遠赤外線を透
過し、且つ液体燃料１２に冒され難いセラミック材（ガ
ラス、プラスチックも可）で形成され、略円筒状を呈す
る。液体燃料１２は、本実施例では、ガソリンに、メチ
ル- ｔ- ブチルエーテル（ＭＴＢＥ）を０容積％〜２０
容積％の範囲で添加したものである。尚、図３に、ガソ
リンとメチル- ｔ- ブチルエーテルの赤外吸収パターン
を示す。The fuel pipe 1 arranged at a proper position of the fuel pipe 11 connecting the fuel tank and the engine transmits far infrared rays and is a ceramic material (glass or plastic may be used) which is hard to be affected by the liquid fuel 12. And has a substantially cylindrical shape. In the present embodiment, the liquid fuel 12 is gasoline containing methyl-t-butyl ether (MTBE) in an amount of 0% to 20% by volume.
It is added in the range of volume%. In addition, FIG. 3 shows infrared absorption patterns of gasoline and methyl-t-butyl ether.
【０００８】遠赤外線ランプ２は、発熱コイル（本実施
例ではニクロム合金）を、絶縁粉末を充填した金属管
（本実施例ではステンレス）の内部に収納し、管表面に
遠赤外線放射物質（本実施例ではチタニヤとジルコニア
の混合物）を被着したものであり、図示しない電源によ
り通電が成され、遠赤外線を効率的に放射する。The far-infrared lamp 2 has a heating coil (Nichrome alloy in this embodiment) housed inside a metal tube (stainless steel in this embodiment) filled with insulating powder, and the far-infrared emitting material (this In the embodiment, a mixture of titania and zirconia) is applied, which is energized by a power source (not shown) to efficiently radiate far infrared rays.
【０００９】凸レンズ４- 赤外光検出器５間に配される
光学フィルター３は、薄膜層によって生じる光の干渉を
利用した、図２に示す特性（波長８μｍ付近の赤外線を
選択的に透過）を有するバンドパスフィルタであり、高
屈折率の誘電体薄膜と低屈折率の誘電体薄膜とを交互に
蒸着し、これを多段に積層して形成されている。The optical filter 3 arranged between the convex lens 4 and the infrared photodetector 5 utilizes the interference of light generated by the thin film layer as shown in FIG. 2 (selectively transmits infrared rays having a wavelength of about 8 μm). Is a bandpass filter having a high refractive index dielectric thin film and a low refractive index dielectric thin film, which are alternately deposited, and are formed by stacking them in multiple stages.
【００１０】凸レンズ４は、本実施例では、蛍石（Ｃａ
Ｆ2 ）で形成され、燃料管路１を透過した赤外線を赤外
光検出器５位置に集光する。In this embodiment, the convex lens 4 is made of fluorite (Ca
The infrared rays formed of F 2 ) and transmitted through the fuel pipe line 1 are focused on the position of the infrared light detector 5.
【００１１】赤外光検出器５は、遠赤外線量を検出する
光電変換素子であり、受光した遠赤外線量に比例した大
きさの電気出力を送出する。尚、本実施例では、Ｐ- Ｇ
ｅ（フォトンドラッグ）を使用している。The infrared light detector 5 is a photoelectric conversion element for detecting the amount of far infrared rays, and sends out an electric output having a magnitude proportional to the amount of far infrared rays received. In this embodiment, P-G
e (photon drug) is used.
【００１２】検出回路６は、液体燃料１２にメチル- ｔ
- ブチルエーテルを添加しない状態での赤外光検出器５
が送出する電気出力の値を予めメモリしておき、この電
気出力値から、監視中における赤外光検出器５が送出す
る電気出力の値を減じ、この差からメチル- ｔ- ブチル
エーテルの混合割合を演算して求めている。The detection circuit 6 uses methyl-t as the liquid fuel 12.
-Infrared detector without butyl ether 5
The value of the electric output sent by is stored in advance, and the value of the electric output sent by the infrared photodetector 5 being monitored is subtracted from this electric output value. From this difference, the mixing ratio of methyl-t-butyl ether is calculated. Is calculated to obtain.
【００１３】つぎに、ＭＴＢＥ検出装置Ａの作動を述べ
る。遠赤外線ランプ２から放射される遠赤外線は、燃料
管路１を透過したのち、光学フィルター３により波長８
μｍ付近のものに絞られ、凸レンズ４により集光され、
赤外光検出器５に到達する。ガソリン１００容積％の場
合の赤外光検出器５が送出する電気出力の値がＥ0、現
在の赤外光検出器５が送出する電気出力の値がＥ1 であ
ると、検出回路６は両者の差（Ｅ0 −Ｅ1 ）に基づいて
メチル- ｔ- ブチルエーテルの混合割合を求める。尚、
メチル- ｔ- ブチルエーテルの混合割合が増えると液体
燃料１２中を赤外光が通過する際、波長８μｍ付近の赤
外光が液体燃料１２に吸収され、赤外光検出器５が送出
する電気出力が低減する。Next, the operation of the MTBE detection device A will be described. The far-infrared rays emitted from the far-infrared lamp 2 pass through the fuel line 1 and then have a wavelength of 8 by the optical filter 3.
It is narrowed down to around μm and is condensed by the convex lens 4,
The infrared light detector 5 is reached. When the value of the electric output sent by the infrared light detector 5 is E 0 and the value of the electric output sent by the present infrared light detector 5 is E 1 in the case of 100% by volume of gasoline, the detection circuit 6 The mixing ratio of methyl-t-butyl ether is determined based on the difference (E 0 -E 1 ) between the two. still,
When the mixing ratio of methyl-t-butyl ether is increased, when the infrared light passes through the liquid fuel 12, the infrared light near the wavelength of 8 μm is absorbed by the liquid fuel 12 and the electric output sent by the infrared light detector 5 Is reduced.
【００１４】本実施例の利点を述べる。 （あ）適宜、添加される添加剤の種類がメチル- ｔ- ブ
チルエーテルだけだと分かっている場合、メチル- ｔ-
ブチルエーテルの混合割合が簡単な構成で検出できる。 （い）光学フィルター３を、燃料管路１の他方外方側
の、凸レンズ４- 赤外光検出器５間に配しているので、
他の配置方法に比べ、波長８μｍ付近以外の遠赤外線が
赤外光検出器５に侵入する可能性が少ない（ＭＴＢＥ混
合割合の検出精度が高い）。The advantages of this embodiment will be described. (A) If it is known that the only kind of additive to be added is methyl-t-butyl ether, methyl-t-
The mixing ratio of butyl ether can be detected with a simple structure. (Ii) Since the optical filter 3 is arranged between the convex lens 4 and the infrared light detector 5 on the other outer side of the fuel pipe line 1,
Far infrared rays having a wavelength other than around 8 μm are less likely to enter the infrared light detector 5 as compared with other arrangement methods (higher detection accuracy of the MTBE mixing ratio).
【００１５】つぎに、本発明の第２実施例（請求項２に
対応）を図４及び図５に基づいて説明する。ＭＴＢＥ・
ガソリン混合割合検出装置兼ガソリン重質度検出装置Ｂ
は、発光ダイオード７１が放射する光を、液体燃料１２
に接触させたプリズム７２の燃料接触面７２１で全反射
させてフォトダイオード７３に入光させ、フォトダイオ
ード７３の電気出力（屈折率関連データに相当）に基づ
いて、液体燃料１２中のガソリン重質度を検出する公知
のガソリン重質度検出センサ７と、ＭＴＢＥ検出装置Ａ
と、フォトダイオード７３の電気出力を、検出センサ７
で検出したＭＴＢＥ混合量に応じて補正して、ＭＴＢＥ
／ガソリンの混合割合及びガソリン重質度を算出する検
出回路８とを有する。Next, a second embodiment of the present invention (corresponding to claim 2) will be described with reference to FIGS. 4 and 5. MTBE
Gasoline mixture ratio detector and gasoline heaviness detector B
Emits light emitted from the light emitting diode 71 to the liquid fuel 12
The fuel contact surface 721 of the prism 72 brought into contact with the light is totally reflected to enter the photodiode 73, and based on the electric output of the photodiode 73 (corresponding to the refractive index related data), the gasoline heavy in the liquid fuel 12 Well-known gasoline heavyness detecting sensor 7 for detecting degree and MTBE detecting device A
And the electric output of the photodiode 73 is detected by the detection sensor 7
The MTBE is corrected according to the MTBE mixed amount detected in
And / a detection circuit 8 for calculating the mixing ratio of gasoline and the gasoline heaviness.
【００１６】上記ガソリン重質度検出センサ７は、液体
燃料１２中の、ガソリン重質度が軽質になると臨界角が
小さくなるのでフォトダイオード７３の電気出力は増大
するが、メチル- ｔ- ブチルエーテルの混合割合が増加
してもフォトダイオード７３の電気出力は増大する。
尚、臨界角が小さいと、発光ダイオード７１から放射さ
れる光は実線で示す光路７１１を進んでフォトダイオー
ド７３に到達する。In the gasoline heaviness detection sensor 7, the critical angle becomes smaller when the gasoline heaviness in the liquid fuel 12 becomes lighter, so that the electric output of the photodiode 73 increases, but methyl-t-butyl ether Even if the mixing ratio increases, the electric output of the photodiode 73 increases.
When the critical angle is small, the light emitted from the light emitting diode 71 travels along the optical path 711 indicated by the solid line and reaches the photodiode 73.
【００１７】液体燃料１２は、本実施例では、ガソリン
に、メチル- ｔ- ブチルエーテルを、合計、０容積％〜
２０容積％の範囲で適宜、添加される。In the present embodiment, the liquid fuel 12 is gasoline containing methyl-t-butyl ether in a total amount of 0% by volume.
It is appropriately added within the range of 20% by volume.
【００１８】次に、ＭＴＢＥ・ガソリン混合割合検出装
置兼ガソリン重質度検出装置Ｂの作動を、図５のフロー
チャートとともに説明する。ステップｓ１で、ＭＴＢＥ
検出装置Ａの検出回路６は、赤外光検出器５から電気出
力を得る。ステップｓ２で、ＭＴＢＥ検出装置Ａの検出
回路６は、Ｅ0 −Ｅ1 に基づいてメチル- ｔ- ブチルエ
ーテルの混合割合を求める。ステップｓ３において、メ
チル- ｔ- ブチルエーテルが検出される場合、ステップ
ｓ４に進み、また、メチル- ｔ- ブチルエーテルが検出
されない場合、ステップｓ６に進む。メチル- ｔ- ブチ
ルエーテルが添加されている場合、フォトダイオード７
３の電気出力が増加するので、ステップｓ４において、
この増加分が相殺される様に電気出力を電気的に補正
し、ステップｓ５に進む。ステップｓ５で、補正された
フォトダイオード７３の電気出力に基づいて、検出回路
８はガソリン重質度を算出する。メチル- ｔ- ブチルエ
ーテルが添加されていない場合、ステップｓ６におい
て、フォトダイオード７３の電気出力に基づいて、検出
回路８は、ガソリン重質度を算出する。Next, the operation of the MTBE / gasoline mixture ratio detecting device / gasoline heaviness detecting device B will be described with reference to the flow chart of FIG. In step s1, MTBE
The detection circuit 6 of the detection device A obtains an electric output from the infrared light detector 5. In step s2, the detection circuit 6 of MTBE detecting device A, methyl based on E 0 -E 1 - finding the mixing ratio of t- butyl ether. In step s3, if methyl-t-butyl ether is detected, the process proceeds to step s4, and if methyl-t-butyl ether is not detected, the process proceeds to step s6. Photodiode 7 when methyl-t-butyl ether is added
Since the electric output of 3 increases, in step s4,
The electric output is electrically corrected so that this increase is offset, and the process proceeds to step s5. In step s5, the detection circuit 8 calculates the gasoline heaviness based on the corrected electric output of the photodiode 73. When methyl-t-butyl ether is not added, in step s6, the detection circuit 8 calculates the gasoline heaviness based on the electric output of the photodiode 73.
【００１９】本実施例の利点を述べる。 （う）液体燃料１２が、ガソリンにメチル- ｔ- ブチル
エーテルを添加したものであっても、ＭＴＢＥ／ガソリ
ンの混合割合を正確に求めることができる。 （え）ＭＴＢＥ検出装置Ａから離し、且つ上流側の燃料
配管１１にガソリン重質度検出センサ７を配設している
ので、遠赤外線ランプ２からの遠赤外線の輻射や、遠赤
外線による液体燃料１２の昇温の影響による、ガソリン
重質度検出センサ７の誤作動を回避できる。The advantages of this embodiment will be described. (V) Even if the liquid fuel 12 is gasoline to which methyl-t-butyl ether is added, the MTBE / gasoline mixing ratio can be accurately determined. (E) Since the gasoline heaviness detection sensor 7 is arranged in the fuel pipe 11 on the upstream side, apart from the MTBE detection device A, the far-infrared lamp 2 radiates far-infrared rays and the liquid fuel by far-infrared rays. The malfunction of the gasoline heavyness detection sensor 7 due to the influence of the temperature rise of 12 can be avoided.
【００２０】本発明は、上記実施例以外に、つぎの実施
態様を含む。 ａ．赤外線放射源は、ＭＴＢＥの吸収域の波長（８μｍ
前後）を含む遠赤外線を放射できるものであれば、その
他、グローバ、シーズヒータ、レーザ、アーク灯、ＩＲ
Ｓランプ等でも良い。 ｂ．赤外線量検出器は、波長８μｍ付近の遠赤外線を検
出できれば、その他、ＨｇＣｄＴｅ、ＣｄＳｅ、ＰｂＳ
ｎＴｅ、Ｇｅ：Ｈｇ、ＨｇＴｅ- ＣｄＴｅ等を用いても
良い。 ｃ．バンドパスフィルターは、波長８μｍ付近の赤外線
を選択的に透過させる事ができれば、その他、回折、金
属メッシュ、選択吸収、残留反射、全反射等を利用した
光学素子で構成しても良い。また、バンドパスフィルタ
ーの配設は、その他、燃料管路１- 凸レンズ４間、遠赤
外線ランプ２- 燃料管路１間に配設しても良い。The present invention includes the following embodiments in addition to the above embodiments. a. The infrared radiation source has a wavelength in the absorption region of MTBE (8 μm
Others, such as glober, sheathed heater, laser, arc lamp, IR
It may be an S lamp or the like. b. If the infrared ray amount detector can detect far infrared rays having a wavelength of around 8 μm, HgCdTe, CdSe, PbS
You may use nTe, Ge: Hg, HgTe- CdTe etc. c. The bandpass filter may be composed of an optical element utilizing diffraction, a metal mesh, selective absorption, residual reflection, total reflection, etc., as long as it can selectively transmit infrared rays having a wavelength of around 8 μm. Further, the band pass filter may be arranged between the fuel pipe 1 and the convex lens 4 and between the far infrared lamp 2 and the fuel pipe 1.
【図１】本発明の第１実施例にかかるＭＴＢＥ検出装置
の構造説明図である。FIG. 1 is a structural explanatory view of an MTBE detection device according to a first embodiment of the present invention.
【図２】そのＭＴＢＥ検出装置に使用するバンドパスフ
ィルターの特性図である。FIG. 2 is a characteristic diagram of a bandpass filter used in the MTBE detection device.
【図３】ガソリンとメチル- ｔ- ブチルエーテルの赤外
吸収パターンを示すグラフである。FIG. 3 is a graph showing infrared absorption patterns of gasoline and methyl-t-butyl ether.
【図４】本発明の第２実施例にかかる、ＭＴＢＥ・ガソ
リン混合割合検出装置兼ガソリン重質度検出装置Ｂの構
造説明図である。FIG. 4 is a structural explanatory view of an MTBE / gasoline mixture ratio detection device / gasoline heaviness detection device B according to a second embodiment of the present invention.
【図５】その装置の作動を示すフローチャートである。FIG. 5 is a flowchart showing the operation of the apparatus.
Ａ ＭＴＢＥ検出装置（ＭＴＢＥ検出センサ） Ｂ ＭＴＢＥ・ガソリン混合割合検出装置兼ガソリン重
質度検出装置（燃料性状検出装置） １ 燃料管路 ２ 遠赤外線ランプ（赤外線放射源） ３ 光学フィルター（バンドパスフィルター） ５ 赤外光検出器（赤外線量検出器） １２ 液体燃料A MTBE detection device (MTBE detection sensor) B MTBE / gasoline mixture ratio detection device and gasoline heavyness detection device (fuel property detection device) 1 Fuel line 2 Far infrared lamp (infrared radiation source) 3 Optical filter (band pass filter) ) 5 Infrared detector (infrared amount detector) 12 Liquid fuel
Claims (2)
料管路と、 該燃料管路の一方外方側に配される赤外線放射源と、 前記燃料管路の他方外方側に配される赤外線量検出器
と、 波長８μｍ付近の赤外線を選択的に透過させる特性を有
し、前記赤外線放射源と赤外線量検出器との間に配され
るバンドパスフィルターとを備え、 該検出器が送出する電気出力に基づいて、適宜、添加さ
れるメチル- ｔ- ブチルエーテルの混合割合を検出する
ＭＴＢＥ検出センサ。1. An infrared-transparent fuel conduit through which liquid fuel passes, an infrared radiation source arranged on one outside of the fuel conduit, and an infrared radiation source arranged on the other outside of the fuel conduit. An infrared ray amount detector having a wavelength of 8 μm and a bandpass filter arranged between the infrared ray radiation source and the infrared ray amount detector. An MTBE detection sensor that appropriately detects the mixing ratio of methyl-t-butyl ether to be added based on the electric output sent.
率関連データに基づいて燃料性状を求める燃料性状検出
装置において、 前記屈折率関連データを、請求項１記載のＭＴＢＥ検出
センサで検出されるＭＴＢＥ混合割合に応じて補正する
ことを特徴とする燃料性状検出装置。2. A fuel property detecting device for obtaining a fuel property based on refractive index related data obtained from a change in refractive index of liquid fuel, wherein the refractive index related data is detected by an MTBE detection sensor according to claim 1. A fuel property detection device, characterized in that it is corrected according to the MTBE mixing ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8727992A JPH05288675A (en) | 1992-04-08 | 1992-04-08 | Mtbe detecting sensor and fuel-property detecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8727992A JPH05288675A (en) | 1992-04-08 | 1992-04-08 | Mtbe detecting sensor and fuel-property detecting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05288675A true JPH05288675A (en) | 1993-11-02 |
Family
ID=13910350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8727992A Pending JPH05288675A (en) | 1992-04-08 | 1992-04-08 | Mtbe detecting sensor and fuel-property detecting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05288675A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007040745A (en) * | 2005-08-01 | 2007-02-15 | Mitsubishi Electric Engineering Co Ltd | Inspection device of adhesive state of filling container |
| JP2007085907A (en) * | 2005-09-22 | 2007-04-05 | Mitsubishi Electric Engineering Co Ltd | Device for inspecting filling container |
| JP2008107098A (en) * | 2006-10-23 | 2008-05-08 | Toyota Motor Corp | Fuel property detection device |
| JP2008157728A (en) * | 2006-12-22 | 2008-07-10 | Toyota Motor Corp | Device for detecting fuel properties |
-
1992
- 1992-04-08 JP JP8727992A patent/JPH05288675A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007040745A (en) * | 2005-08-01 | 2007-02-15 | Mitsubishi Electric Engineering Co Ltd | Inspection device of adhesive state of filling container |
| JP4664769B2 (en) * | 2005-08-01 | 2011-04-06 | 三菱電機エンジニアリング株式会社 | Filling container adhesion state inspection device |
| JP2007085907A (en) * | 2005-09-22 | 2007-04-05 | Mitsubishi Electric Engineering Co Ltd | Device for inspecting filling container |
| JP2008107098A (en) * | 2006-10-23 | 2008-05-08 | Toyota Motor Corp | Fuel property detection device |
| JP2008157728A (en) * | 2006-12-22 | 2008-07-10 | Toyota Motor Corp | Device for detecting fuel properties |
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