JPS6252266U - - Google Patents
Info
- Publication number
- JPS6252266U JPS6252266U JP14281385U JP14281385U JPS6252266U JP S6252266 U JPS6252266 U JP S6252266U JP 14281385 U JP14281385 U JP 14281385U JP 14281385 U JP14281385 U JP 14281385U JP S6252266 U JPS6252266 U JP S6252266U
- Authority
- JP
- Japan
- Prior art keywords
- brake
- determination device
- determination
- recovery time
- failure
- 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
- 230000007257 malfunction Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims 2
- 238000010992 reflux Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図は本考案の一実施例に係る排気還流装置
における故障判定装置の誤動作防止装置の構成図
、第２図は第１図の装置の電子制御ユニツトの制
御機能を示すフローチヤート、第３図は第２図の
故障判定ルーチンに関係する特性図、第４図は第
１図の装置における誤動作防止のタイミングチヤ
ート、第５図はブレーキ操作によるバキユーム負
圧の落込みを説明するタイミングチヤートである
。
図中、３は排気還流弁、６は制御器としての電
子制御ユニツト、９は制動センサとしてのブレー
キスイツチ、１０はタイマである。
FIG. 1 is a block diagram of a malfunction prevention device of a failure determination device in an exhaust gas recirculation system according to an embodiment of the present invention, FIG. 2 is a flowchart showing the control function of the electronic control unit of the device in FIG. 1, and FIG. The figure is a characteristic diagram related to the failure determination routine in Figure 2, Figure 4 is a timing chart for preventing malfunction in the device in Figure 1, and Figure 5 is a timing chart explaining the drop in vacuum vacuum pressure due to brake operation. be. In the figure, 3 is an exhaust recirculation valve, 6 is an electronic control unit as a controller, 9 is a brake switch as a braking sensor, and 10 is a timer.
Claims (1)
とき故障判定を行う判定装置と、制動のＯＮ／Ｏ
ＦＦを検知する制動センサと、該センサがＯＮか
らＯＦＦを検知後負圧源圧の回復時間を計るタイ
マと、制動ＯＮから回復時間経過まで判定装置の
判定を停止する制御器とを備えた排気還流装置に
おける故障判定装置の誤動作防止装置。 A determination device that determines a failure when the control negative pressure that operates the exhaust recirculation valve is below a predetermined pressure, and a brake ON/O
An exhaust system equipped with a brake sensor that detects FF, a timer that measures the recovery time of the negative pressure source pressure after the sensor detects the transition from ON to OFF, and a controller that stops the determination by the determination device from when the brake is ON until the recovery time has elapsed. A malfunction prevention device for a failure determination device in a reflux device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14281385U JPH0410372Y2 (en) | 1985-09-20 | 1985-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14281385U JPH0410372Y2 (en) | 1985-09-20 | 1985-09-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6252266U true JPS6252266U (en) | 1987-04-01 |
| JPH0410372Y2 JPH0410372Y2 (en) | 1992-03-13 |
Family
ID=31051897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14281385U Expired JPH0410372Y2 (en) | 1985-09-20 | 1985-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0410372Y2 (en) |
-
1985
- 1985-09-20 JP JP14281385U patent/JPH0410372Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0410372Y2 (en) | 1992-03-13 |
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