JPH0391822U - - Google Patents
Info
- Publication number
- JPH0391822U JPH0391822U JP15265089U JP15265089U JPH0391822U JP H0391822 U JPH0391822 U JP H0391822U JP 15265089 U JP15265089 U JP 15265089U JP 15265089 U JP15265089 U JP 15265089U JP H0391822 U JPH0391822 U JP H0391822U
- Authority
- JP
- Japan
- Prior art keywords
- vehicle speed
- detection means
- automatic constant
- vehicle
- traveling device
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Controls For Constant Speed Travelling (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図、第３図
は第２図中のアクチユエータの詳細図、第４図は
車速検出に係る部分のブロツク図、第５図ａ，ｂ
はエンジン制御装置用の車速検出ルーチンのフロ
ーチヤート、第６図は自動定速走行装置用の車速
演算ルーチンのフローチヤート、第７図は診断ル
ーチンのフローチヤート、第８図は自動定速走行
装置の制御ルーチンのフローチヤートである。
１……エンジン、３……燃料噴射弁、４……ス
ロツトル弁、７……アクチユエータ、８……コン
トロールユニツト、９……車速センサ。
Figure 1 is a block diagram showing the configuration of the present invention, Figure 2 is a block diagram showing the configuration of the present invention.
The figure is a system diagram showing one embodiment of the present invention, Figure 3 is a detailed view of the actuator in Figure 2, Figure 4 is a block diagram of the part related to vehicle speed detection, and Figures 5 a and b.
is a flowchart of the vehicle speed detection routine for the engine control device, FIG. 6 is a flowchart of the vehicle speed calculation routine for the automatic constant speed traveling system, FIG. 7 is a flowchart of the diagnostic routine, and FIG. 8 is a flowchart of the automatic constant speed traveling system. 2 is a flowchart of the control routine of FIG. DESCRIPTION OF SYMBOLS 1... Engine, 3... Fuel injection valve, 4... Throttle valve, 7... Actuator, 8... Control unit, 9... Vehicle speed sensor.
Claims (1)
出力されるパルス信号に基づいて車速を検出する
車速検出手段と、一定条件下で作動して車速検出
手段により検出される車速を目標車速に一致させ
るようアクチユエータを介してスロツトル弁の開
度を制御する制御手段とを備えてなる自動定速走
行装置であつて、その制御回路部分を少なくとも
電子制御燃料噴射装置を含むエンジン制御装置の
コントロールユニツトに組込んでなり、かつ、そ
のコントロールユニツトに、エンジン制御装置用
に、自動定速走行装置用の車速検出手段とは別に
、車速センサからのパルス信号に基づいて車速を
検出する車速検出手段を有するものにおいて、 これら２つの車速検出手段による車速の検出値
を比較し、その差が所定値以上のときに異常と判
定する診断手段と、異常判定時に、前記制御手段
の作動を禁止する作動禁止手段とを設けたことを
特徴とする自動定速走行装置の安全装置。[Scope of claim for utility model registration] Vehicle speed detection means that detects vehicle speed based on a pulse signal output from a vehicle speed sensor in synchronization with the rotation of the propulsion shaft of the vehicle, and a vehicle speed detection means that operates under certain conditions to detect the vehicle speed. An automatic constant speed traveling device comprising a control means for controlling the opening degree of a throttle valve via an actuator so as to match the target vehicle speed with a target vehicle speed, the control circuit portion of which is equipped with at least an electronically controlled fuel injection device. The control unit is incorporated in a control unit of an engine control device including a vehicle speed sensor, and the control unit is configured to detect a vehicle speed based on a pulse signal from a vehicle speed sensor, in addition to a vehicle speed detection means for an automatic constant speed traveling device. a vehicle speed detection means for detecting a vehicle speed, a diagnostic means for comparing the detected values of the vehicle speed by these two vehicle speed detection means and determining that the vehicle is abnormal when the difference is greater than a predetermined value; A safety device for an automatic constant speed traveling device, characterized in that it is provided with an operation prohibition means for prohibiting the operation of the automatic constant speed traveling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15265089U JPH0391822U (en) | 1989-12-29 | 1989-12-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15265089U JPH0391822U (en) | 1989-12-29 | 1989-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0391822U true JPH0391822U (en) | 1991-09-19 |
Family
ID=31698903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15265089U Pending JPH0391822U (en) | 1989-12-29 | 1989-12-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0391822U (en) |
-
1989
- 1989-12-29 JP JP15265089U patent/JPH0391822U/ja active Pending
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