JPH02144637U - - Google Patents
Info
- Publication number
- JPH02144637U JPH02144637U JP5248589U JP5248589U JPH02144637U JP H02144637 U JPH02144637 U JP H02144637U JP 5248589 U JP5248589 U JP 5248589U JP 5248589 U JP5248589 U JP 5248589U JP H02144637 U JPH02144637 U JP H02144637U
- Authority
- JP
- Japan
- Prior art keywords
- intake
- valve
- throttle valve
- intake port
- bypass passage
- 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
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 1
Landscapes
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案による空気供給装置を示す機関
断面図；第２図は制御弁の開閉期間タイミングを
示す図；第３図は吸気ポート内圧力の経時的変化
を示す図；第４図は本考案による異常発生検出並
びにスロツトル弁作動を実行する制御回路のフロ
ーチヤート図；第５図は燃料噴射時間を演算する
フローチヤート図；第６図は算出された燃料噴射
時間を以つて燃焼噴射実行するフローチヤート図
。
５…吸気ポート、７…吸気弁、１２…スロツト
ル弁、１４…吸気圧センサ、１５…制御回路、１
６…燃料噴射弁、１９…制御弁、２７…クランク
角センサ。
Figure 1 is a cross-sectional view of the engine showing the air supply device according to the present invention; Figure 2 is a diagram showing the timing of the opening and closing periods of the control valve; Figure 3 is a diagram showing changes in the pressure inside the intake port over time; Figure 4 is a diagram showing the timing of the opening and closing periods of the control valve; A flowchart of the control circuit for detecting abnormality occurrence and operating the throttle valve according to the present invention; Figure 5 is a flowchart for calculating the fuel injection time; Figure 6 is for executing combustion injection using the calculated fuel injection time. Flowchart diagram. 5... Intake port, 7... Intake valve, 12... Throttle valve, 14... Intake pressure sensor, 15... Control circuit, 1
6...Fuel injection valve, 19...Control valve, 27...Crank angle sensor.
Claims (1)
スロツトル弁を近接し、スロツトル弁上流の吸気
通路とスロツトル弁下流の吸気ポートとをバイパ
ス路で接続し、該バイパス路に、上記吸気弁閉弁
期間に開弁してスロツトル弁下流の吸気ポートに
新気の一部を供給する制御弁を介装し、以つてア
イドル時、上記バイパス路を介して吸気供給する
内燃機関の空気供給装置において、 上記スロツトル弁下流の吸気ポートに、上記吸
気弁開弁時の吸気ポート圧力を検出する吸気圧セ
ンサを設け、さらに、上記吸気ポート圧力が所定
値以下の際上記スロツトル弁の開度を増加する手
段を設けたことを特徴とする空気供給装置。[Claims for Utility Model Registration] A throttle valve is disposed close to the upstream side of a fuel injection valve disposed near the intake valve, and an intake passage upstream of the throttle valve and an intake port downstream of the throttle valve are connected by a bypass passage. A control valve is installed in the bypass passage, which opens during the intake valve closing period to supply a portion of fresh air to the intake port downstream of the throttle valve, thereby supplying intake air through the bypass passage during idling. In an air supply system for an internal combustion engine, an intake pressure sensor is provided at the intake port downstream of the throttle valve to detect the intake port pressure when the intake valve is opened, and further, when the intake port pressure is below a predetermined value, the An air supply device comprising means for increasing the opening degree of a throttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989052485U JPH0754584Y2 (en) | 1989-05-08 | 1989-05-08 | Air supply device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989052485U JPH0754584Y2 (en) | 1989-05-08 | 1989-05-08 | Air supply device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02144637U true JPH02144637U (en) | 1990-12-07 |
| JPH0754584Y2 JPH0754584Y2 (en) | 1995-12-18 |
Family
ID=31572827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989052485U Expired - Lifetime JPH0754584Y2 (en) | 1989-05-08 | 1989-05-08 | Air supply device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0754584Y2 (en) |
-
1989
- 1989-05-08 JP JP1989052485U patent/JPH0754584Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0754584Y2 (en) | 1995-12-18 |