JPH0259460U - - Google Patents
Info
- Publication number
- JPH0259460U JPH0259460U JP13735188U JP13735188U JPH0259460U JP H0259460 U JPH0259460 U JP H0259460U JP 13735188 U JP13735188 U JP 13735188U JP 13735188 U JP13735188 U JP 13735188U JP H0259460 U JPH0259460 U JP H0259460U
- Authority
- JP
- Japan
- Prior art keywords
- alcohol
- concentration
- sensor
- voltage
- resistive
- 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.)
- Granted
Links
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 33
- 238000005070 sampling Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 11
- 239000000446 fuel Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
第１図ないし第６図は本考案の実施例に係り、
第１図は間接サンプリング式アルコールセンサと
抵抗式アルコールセンサを一体に構成した回路図
、第２図は間接サンプリング式アルコールセンサ
の構成説明図、第３図はアルコール濃度測定装置
を燃料噴射制御装置に適用した場合のシステム構
成図、第４図はアルコール濃度と出力電圧との関
係を示す特性線図、第５図は記憶装置に格納され
ているテーブルの説明図、第６図はアルコール濃
度から燃料噴射量を演算する処理を示す流れ図、
第７図ないし第１０図は従来技術に係り、第７図
はアルコール濃度に対する空燃比の関係を示す線
図、第８図は抵抗式アルコールセンサの構成説明
図、第９図はアルコール濃度と検出抵抗の関係を
示す線図、第１０図はアルコール濃度と出力電圧
の関係を示す特性線図である。
１……間接サンプリング式アルコールセンサ、
１０……抵抗式アルコールセンサ、１１……アル
コール濃度演算装置、１２……記憶装置、１２Ａ
……データテーブル、１３……噴射量演算装置。
1 to 6 relate to embodiments of the present invention,
Figure 1 is a circuit diagram that integrates an indirect sampling type alcohol sensor and a resistance type alcohol sensor, Figure 2 is an explanatory diagram of the configuration of an indirect sampling type alcohol sensor, and Figure 3 shows an alcohol concentration measuring device integrated into a fuel injection control device. A system configuration diagram when the application is applied, Figure 4 is a characteristic diagram showing the relationship between alcohol concentration and output voltage, Figure 5 is an explanatory diagram of the table stored in the storage device, and Figure 6 is a diagram showing the relationship between alcohol concentration and fuel. A flowchart showing the process of calculating the injection amount,
Figures 7 to 10 relate to the prior art; Figure 7 is a diagram showing the relationship between alcohol concentration and air-fuel ratio; Figure 8 is an explanatory diagram of the configuration of a resistive alcohol sensor; Figure 9 is an alcohol concentration and detection diagram. A diagram showing the relationship between resistance and FIG. 10 is a characteristic diagram showing the relationship between alcohol concentration and output voltage. 1...Indirect sampling type alcohol sensor,
10...Resistive alcohol sensor, 11...Alcohol concentration calculation device, 12...Storage device, 12A
...Data table, 13...Injection amount calculation device.
Claims (1)
、一定の電圧または電流が印加されるようになつ
た一対の通電用電極及び該一対の通電用電極間に
位置して所定間隔離間して対向配設された一対の
検出用電極を有し、該各検出用電極間の電位差を
用いてアルコール濃度を検出する間接サンプリン
グ式アルコールセンサと、前記アルコール混合液
体中の抵抗値からアルコール濃度を検出する抵抗
式アルコールセンサと、該抵抗式アルコールセン
サが前記アルコール混合液体の所定のアルコール
濃度毎に出力する検出電圧及び該検出電圧により
定めたアルコール濃度を予めマツプとして記憶し
た記憶手段と、前記アルコール混合液体の所定の
アルコール濃度を基準とする第１の基準電圧値に
対する前記抵抗式アルコールセンサの検出電圧の
大小を判定する第１の判定手段と、前記抵抗式ア
ルコールセンサの検出電圧の最大値に対応するア
ルコール濃度を基準として予め設定した第２の基
準電圧値に対する前記間接サンプリング式アルコ
ールセンサの検出電圧の大小を判定する第２の判
定手段とを備え、前記抵抗式アルコールセンサと
間接サンプリング式アルコールセンサとからの検
出電圧を読込み、前記第１、第２の判定手段によ
つてその大小を判定しつつ、前記抵抗式アルコー
ルセンサによる検出電圧に基づいて前記記憶手段
に記憶されているアルコール濃度を読出し、全濃
度範囲にわたつてアルコール濃度を判定する演算
手段とから構成してなるアルコール濃度測定装置
。 a pair of current-carrying electrodes that are spaced apart and facing each other in an alcohol mixed liquid and to which a constant voltage or current is applied; an indirect sampling alcohol sensor that detects alcohol concentration using a potential difference between the detection electrodes, and a resistor that detects alcohol concentration from a resistance value in the alcohol mixed liquid. a storage means that stores in advance a detection voltage output by the resistance alcohol sensor for each predetermined alcohol concentration of the alcohol mixed liquid and an alcohol concentration determined by the detected voltage as a map; a first determination means for determining the magnitude of the detection voltage of the resistive alcohol sensor with respect to a first reference voltage value based on a predetermined alcohol concentration; and alcohol corresponding to the maximum value of the detection voltage of the resistive alcohol sensor. a second determination means for determining the magnitude of the detected voltage of the indirect sampling type alcohol sensor with respect to a second reference voltage value preset based on the concentration, and from the resistive type alcohol sensor and the indirect sampling type alcohol sensor. The detected voltage is read and the magnitude thereof is determined by the first and second determining means, while the alcohol concentration stored in the storage means is read out based on the detected voltage by the resistive alcohol sensor. An alcohol concentration measuring device comprising calculation means for determining alcohol concentration over a concentration range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13735188U JPH0612524Y2 (en) | 1988-10-21 | 1988-10-21 | Alcohol concentration measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13735188U JPH0612524Y2 (en) | 1988-10-21 | 1988-10-21 | Alcohol concentration measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0259460U true JPH0259460U (en) | 1990-05-01 |
| JPH0612524Y2 JPH0612524Y2 (en) | 1994-03-30 |
Family
ID=31398696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13735188U Expired - Lifetime JPH0612524Y2 (en) | 1988-10-21 | 1988-10-21 | Alcohol concentration measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612524Y2 (en) |
-
1988
- 1988-10-21 JP JP13735188U patent/JPH0612524Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0612524Y2 (en) | 1994-03-30 |
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