JPH01145957U - - Google Patents
Info
- Publication number
- JPH01145957U JPH01145957U JP4101588U JP4101588U JPH01145957U JP H01145957 U JPH01145957 U JP H01145957U JP 4101588 U JP4101588 U JP 4101588U JP 4101588 U JP4101588 U JP 4101588U JP H01145957 U JPH01145957 U JP H01145957U
- Authority
- JP
- Japan
- Prior art keywords
- alcohol
- control
- rotation speed
- idle
- idle rotation
- 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 9
- 239000000446 fuel Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000013459 approach Methods 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図は本考案の構成を示すブロツク図、第２
図は本考案の一実施例を示すシステム概略図、第
３図は同上実施例におけるアイドル制御弁の制御
内容を示すフローチヤートである。
１５…吸気絞り弁、１８…バイパス通路、１９
…アイドル制御弁、２５…燃料供給パイプ、３５
…水温センサ、３６…クランク角センサ、３９…
アルコールセンサ、４０…コントロールユニツト
。
Figure 1 is a block diagram showing the configuration of the present invention;
The figure is a system schematic diagram showing one embodiment of the present invention, and FIG. 3 is a flowchart showing the control contents of the idle control valve in the same embodiment. 15...Intake throttle valve, 18...Bypass passage, 19
...Idle control valve, 25...Fuel supply pipe, 35
...Water temperature sensor, 36...Crank angle sensor, 39...
Alcohol sensor, 40...control unit.
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
量を制御するよう構成されたアルコール内燃機関
において、機関吸気系に介装された吸気絞り弁を
バイパスして供給される補助空気量を制御するア
イドル制御弁と、実際のアイドル回転速度を目標
回転速度に近づけるように前記アイドル制御弁の
開度をフイードバツク制御するアイドル回転速度
制御手段と、該アイドル回転速度制御手段のフイ
ードバツク制御における制御定数を前記アルコー
ルセンサによつて検出されたアルコール濃度に応
じて増減変化させる制御定数可変手段と、を含ん
で構成されたことを特徴とするアルコール内燃機
関のアイドル回転速度制御装置。 In an alcohol internal combustion engine that is equipped with an alcohol sensor that detects the alcohol concentration in the fuel and is configured to control the fuel supply amount according to the alcohol concentration in the fuel detected by the alcohol sensor, an intervening system is installed in the engine intake system. an idle control valve that controls the amount of auxiliary air that is supplied by bypassing the installed intake throttle valve; and an idle rotation control valve that feedback-controls the opening degree of the idle control valve so that the actual idle rotation speed approaches the target rotation speed. It is characterized by comprising a speed control means, and a control constant variable means for increasing or decreasing a control constant in feedback control of the idle rotation speed control means in accordance with the alcohol concentration detected by the alcohol sensor. An idle rotation speed control device for an alcohol internal combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4101588U JPH06611Y2 (en) | 1988-03-30 | 1988-03-30 | Idle rotation speed controller for alcohol internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4101588U JPH06611Y2 (en) | 1988-03-30 | 1988-03-30 | Idle rotation speed controller for alcohol internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01145957U true JPH01145957U (en) | 1989-10-06 |
| JPH06611Y2 JPH06611Y2 (en) | 1994-01-05 |
Family
ID=31267467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4101588U Expired - Lifetime JPH06611Y2 (en) | 1988-03-30 | 1988-03-30 | Idle rotation speed controller for alcohol internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06611Y2 (en) |
-
1988
- 1988-03-30 JP JP4101588U patent/JPH06611Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06611Y2 (en) | 1994-01-05 |