JPH0256838U - - Google Patents
Info
- Publication number
- JPH0256838U JPH0256838U JP13551288U JP13551288U JPH0256838U JP H0256838 U JPH0256838 U JP H0256838U JP 13551288 U JP13551288 U JP 13551288U JP 13551288 U JP13551288 U JP 13551288U JP H0256838 U JPH0256838 U JP H0256838U
- Authority
- JP
- Japan
- Prior art keywords
- alcohol
- sensor
- output value
- alcohol sensor
- fuel
- 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 11
- 239000000446 fuel Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案に係わる内燃機関におけるアル
コールセンサ診断装置の構成図、第２図は同上装
置の一実施例を示すシステム図、第３図は同上実
施例における燃料噴射量演算ルーチンを示すフロ
ーチヤート、第４図はアルコールセンサの診断ル
ーチンを示すフローチヤート、第５図は同上のア
ルコールセンサの診断作用を説明するグラフ、第
６図は従来の問題点を説明するためのグラフであ
る。
１……機関、２……吸気通路、３……エアフロ
ーメータ、５……燃料噴射弁、６……コントロー
ルユニツト、８……酸素センサ、９……クランク
角センサ、１０……アルコールセンサ、１１……
燃料タンク、１２……水温センサ。
Fig. 1 is a configuration diagram of an alcohol sensor diagnostic device for an internal combustion engine according to the present invention, Fig. 2 is a system diagram showing an embodiment of the same device, and Fig. 3 is a flowchart showing a fuel injection amount calculation routine in the above embodiment. FIG. 4 is a flow chart showing the diagnostic routine of the alcohol sensor, FIG. 5 is a graph explaining the diagnostic action of the alcohol sensor, and FIG. 6 is a graph explaining the conventional problems. DESCRIPTION OF SYMBOLS 1... Engine, 2... Intake passage, 3... Air flow meter, 5... Fuel injection valve, 6... Control unit, 8... Oxygen sensor, 9... Crank angle sensor, 10... Alcohol sensor, 11 ……
Fuel tank, 12...Water temperature sensor.
Claims (1)
センサを備え、該アルコールセンサによつて検出
される燃料中のアルコール濃度に応じて燃料供給
量を制御するように構成された内燃機関において
、機関回転中のアルコールセンサの最新の実出力
値と過去の演算出力値とを該過去の演算出力値に
対して重み付けされるように加重平均演算する演
算手段と、この加重平均値とアルコールセンサの
実出力値とを比較する手段と、該比較結果に基づ
いてアルコールセンサ出力の異常の有無を判定す
る異常判定手段と、を設けたことを特徴とする内
燃機関におけるアルコールセンサ診断装置。 In an internal combustion engine that is equipped with an alcohol sensor that detects the alcohol concentration in fuel and is configured to control the fuel supply amount according to the alcohol concentration in the fuel detected by the alcohol sensor, alcohol a calculating means for calculating a weighted average of the latest actual output value of the sensor and a past calculated output value so as to be weighted with respect to the past calculated output value; An alcohol sensor diagnostic device for an internal combustion engine, comprising: means for comparing, and abnormality determining means for determining whether or not there is an abnormality in the output of the alcohol sensor based on the comparison result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13551288U JPH066218Y2 (en) | 1988-10-19 | 1988-10-19 | Alcohol sensor diagnostic device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13551288U JPH066218Y2 (en) | 1988-10-19 | 1988-10-19 | Alcohol sensor diagnostic device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0256838U true JPH0256838U (en) | 1990-04-24 |
| JPH066218Y2 JPH066218Y2 (en) | 1994-02-16 |
Family
ID=31395207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13551288U Expired - Lifetime JPH066218Y2 (en) | 1988-10-19 | 1988-10-19 | Alcohol sensor diagnostic device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH066218Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010249669A (en) * | 2009-04-16 | 2010-11-04 | Denso Corp | Liquid concentration detector |
| JP2013061152A (en) * | 2011-09-10 | 2013-04-04 | Denso Corp | Fuel property detection device |
-
1988
- 1988-10-19 JP JP13551288U patent/JPH066218Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010249669A (en) * | 2009-04-16 | 2010-11-04 | Denso Corp | Liquid concentration detector |
| JP2013061152A (en) * | 2011-09-10 | 2013-04-04 | Denso Corp | Fuel property detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH066218Y2 (en) | 1994-02-16 |