JPH1044828A - Maximum speed control device for vehicle - Google Patents

Maximum speed control device for vehicle

Info

Publication number
JPH1044828A
JPH1044828A JP8217955A JP21795596A JPH1044828A JP H1044828 A JPH1044828 A JP H1044828A JP 8217955 A JP8217955 A JP 8217955A JP 21795596 A JP21795596 A JP 21795596A JP H1044828 A JPH1044828 A JP H1044828A
Authority
JP
Japan
Prior art keywords
speed
vehicle
maximum speed
fuel
cylinders
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
Application number
JP8217955A
Other languages
Japanese (ja)
Inventor
Takahiro Muramatsu
高浩 村松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzuki Motor Corp
Original Assignee
Suzuki Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzuki Motor Corp filed Critical Suzuki Motor Corp
Priority to JP8217955A priority Critical patent/JPH1044828A/en
Publication of JPH1044828A publication Critical patent/JPH1044828A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D2200/00Input parameters for engine control
    • F02D2200/50Input parameters for engine control said parameters being related to the vehicle or its components
    • F02D2200/501Vehicle speed

Landscapes

  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Controls For Constant Speed Travelling (AREA)

Abstract

PROBLEM TO BE SOLVED: To avoid melting degradation of catalyst by adding the function controlling to reduce fuel injection quantites supplied from injectors to all cylinders and/or the function controlling to make air-fuel ratio into the condition of being leaner than the theoretical air-fuel ratio to a control means, when the speed of a vehicle reaches the previously set maximum speed. SOLUTION: In this maximum speed control device 2, injectors 4 respectively supplying fuel to a plurality of cylinders of an engine loaded on a vehicle are provided. Further it is provided with a speed detecting means 6 detecting the vehicle speed, and when the vehicle speed reaches the previously set maximum speed, the engine output is restrained by fixed control so as to control the vehicle speed to be under the maximum speed by a control means 8. When the vehicle speed reaches the previously set maximum speed, the function controlling to reduce fuel injection quantities supplied from the injectors 4 to all the cylinders, or the function controlling to make the air-fuel ratio leaner than the theoretical air-fuel ratio is added to the control means 8.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は車両用最高速度制
御装置に係り、特に車両の速度が予め設定される最高速
度に達した際に、全ての気筒にインジェクタから供給さ
れる燃料噴射量を減少および/または空燃比を理論空燃
比よりも希薄な状態とすべく制御し、排気管に流れ込む
未燃ガスを減少させて排気管内における未燃ガスの燃焼
による温度上昇を抑制し、排気温度の上昇による触媒の
溶損を回避し、触媒の性能・耐久性を維持し得る車両用
最高速度制御装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maximum speed control device for a vehicle, and in particular, to reduce the amount of fuel injected from an injector to all cylinders when the speed of the vehicle reaches a predetermined maximum speed. And / or controlling the air-fuel ratio to be leaner than the stoichiometric air-fuel ratio, reducing unburned gas flowing into the exhaust pipe, suppressing a temperature rise due to combustion of the unburned gas in the exhaust pipe, and increasing the exhaust temperature. The present invention relates to a maximum speed control device for a vehicle, which can prevent the catalyst from being melted and thereby maintain the performance and durability of the catalyst.

【0002】[0002]

【従来の技術】前記車両用最高速度制御装置(「スピー
ドリミッタ」とも言う)は、車速制限装置の作動する所
定条件を満足した際に、気筒の間引き制御を行ってい
る。つまり、例えばシーケンシャル噴射を行っている4
気筒を有する内燃機関の場合には、第1の気筒から第3
の気筒、第4の気筒、そして第2の気筒と順次噴射制御
されており、車速制限装置の作動する所定条件を満足し
た際に、第1の気筒と第3の気筒との2気筒を2回に1
回の割合で燃料噴射を停止すべく夫々間引き制御を行っ
ている。
2. Description of the Related Art The above-mentioned maximum speed control device for a vehicle (also referred to as "speed limiter") controls the thinning of cylinders when a predetermined condition for operating a vehicle speed limit device is satisfied. That is, for example, sequential injection 4
In the case of an internal combustion engine having a cylinder, the third cylinder
, The fourth cylinder, and the second cylinder are sequentially controlled to be injected. When a predetermined condition for operating the vehicle speed limiting device is satisfied, the two cylinders of the first cylinder and the third cylinder are switched to two cylinders. 1 at a time
The thinning control is performed to stop the fuel injection at the rate of each time.

【0003】そしてこのとき、間引き制御時の燃料噴射
量は、触媒保護のために、減筒時用の増量補正係数(F
CR)により全気筒、燃料を増量させている。
[0003] At this time, the fuel injection amount at the time of the thinning control is determined by an increase correction coefficient (F
CR) to increase the amount of fuel in all cylinders.

【0004】前記車両用最高速度制御装置としては、特
開平4−50448号公報に開示されるものがある。こ
の公報に開示される車両用エンジンの速度制限装置は、
車両用エンジンの運転状態に応じて燃料供給量を設定す
る燃料供給量設定手段と、前記エンジンの各気筒を2つ
異常の気筒グループに分けて、気筒グループ毎に燃料供
給量をエンジンの各気筒へ供給する燃料供給手段と、前
記車両の速度を検出する車速検出手段と、前記車速が停
止開始車速異常の時、720クランク角度を1単位とし
て気筒グループ毎に周期または位相のうち少なくともい
ずれか一方が異なったタイミングで燃料供給を停止する
燃料供給停止手段とを備え、エンジンに供給する燃料供
給量を制御して車両を所定速度以下に制限している。
[0004] As the above-mentioned maximum speed control device for a vehicle, there is one disclosed in Japanese Patent Application Laid-Open No. Hei 4-50448. The vehicle engine speed limiting device disclosed in this publication includes:
Fuel supply amount setting means for setting a fuel supply amount in accordance with an operation state of a vehicle engine; and dividing each cylinder of the engine into two abnormal cylinder groups, and setting a fuel supply amount for each cylinder group to each cylinder of the engine. Fuel supply means for supplying fuel to the vehicle, vehicle speed detection means for detecting the speed of the vehicle, and when the vehicle speed is at a stop start vehicle speed abnormality, at least one of a cycle or a phase for each cylinder group with 720 crank angles as one unit. Has fuel supply stopping means for stopping fuel supply at different timings, and controls the amount of fuel supplied to the engine to limit the vehicle to a predetermined speed or less.

【0005】[0005]

【発明が解決しようとする課題】ところで、従来の車両
用最高速度制御装置においては、以下の如き、4つの方
策がある。 (1)設定速度である最高速度に達した際に、複数の気
筒の内の一部の気筒の燃料をカットする。 (2)設定速度である最高速度に達した際に、間引き噴
射制御を行う。 (3)設定速度である最高速度に達した際に、吸入空気
量を制限する。 (4)設定回転数である最高回転数に達した際に、複数
の気筒の内の一部または全部の気筒の燃料をカットす
る。
In a conventional maximum speed control device for a vehicle, there are the following four measures. (1) When the maximum speed, which is the set speed, is reached, the fuel of some of the plurality of cylinders is cut. (2) When the maximum speed, which is the set speed, is reached, thinning injection control is performed. (3) When the maximum speed that is the set speed is reached, the amount of intake air is limited. (4) When the maximum number of revolutions, which is the set number of revolutions, is reached, fuel for some or all of the plurality of cylinders is cut.

【0006】一般に、車両の高負荷走行においては、空
燃比は理論空燃比より濃い状態として運転している。
In general, when a vehicle is running under a high load, the vehicle is operated with the air-fuel ratio being higher than the stoichiometric air-fuel ratio.

【0007】このような濃い状態で設定速度である最高
速度に達した際に、複数の気筒の内の一部の気筒の燃料
をカットまたは間引き噴射制御を行って出力を制限し、
速度を抑制すると、排気管内には噴射気筒からの未燃ガ
スが流れ込むとともに、燃料カットまたは間引き噴射制
御した気筒からは、空気、つまり酸素が流れ込むことと
なり、排気管においては未燃ガスと酸素とが反応して排
気温度が非常に高くなってしまう。
When the maximum speed, which is the set speed, is reached in such a rich state, the fuel is cut or thinned out in some of the plurality of cylinders to control the output, thereby limiting the output.
When the speed is suppressed, unburned gas from the injection cylinder flows into the exhaust pipe, and air, that is, oxygen flows from the cylinder on which fuel cut or thinned injection control is performed. Reacts and the exhaust temperature becomes very high.

【0008】この結果、排気温度が上昇することによっ
て、触媒が溶損されて触媒の性能低下が惹起される惧れ
があり、実用上不利であるという不都合がある。
As a result, when the exhaust gas temperature rises, there is a fear that the catalyst may be melted and deteriorated in performance of the catalyst, which is disadvantageous in practical use.

【0009】[0009]

【課題を解決するための手段】そこで、この発明は、上
述不都合を除去するために、車両に搭載されるエンジン
の複数個の気筒に燃料を夫々供給するインジェクタを設
けるとともに車両の速度を検知する速度検知手段を設
け、車両の速度が予め設定される最高速度に達した際に
所定の制御によってエンジン出力を抑制し車両の速度を
最高速度以下に制御する制御手段を有する車両用最高速
度制御装置において、車両の速度が予め設定される最高
速度に達した際には、全ての気筒に前記インジェクタか
ら供給される燃料噴射量を減少させるべく制御する機能
および/または空燃比を理論空燃比よりも希薄な状態と
すべく制御する機能を前記制御手段に付加して設けたこ
とを特徴とする。
SUMMARY OF THE INVENTION Therefore, in order to eliminate the above-mentioned disadvantages, the present invention provides an injector for supplying fuel to each of a plurality of cylinders of an engine mounted on a vehicle and detects the speed of the vehicle. A maximum speed control device for a vehicle, comprising speed detection means, and control means for controlling engine output by a predetermined control and controlling the speed of the vehicle to the maximum speed or less when the speed of the vehicle reaches a preset maximum speed. In the above, when the speed of the vehicle reaches a preset maximum speed, a function of controlling the fuel injection amount supplied from the injector to all cylinders to reduce the fuel injection amount and / or the air-fuel ratio is set to be smaller than the stoichiometric air-fuel ratio. It is characterized in that a function of controlling to make a lean state is added to the control means.

【0010】[0010]

【発明の実施の形態】上述の如く発明したことにより、
車両の速度が予め設定される最高速度に達した際には、
制御手段によって全ての気筒にインジェクタから供給さ
れる燃料噴射量を減少および/または空燃比を理論空燃
比よりも希薄な状態とすべく制御し、排気管に流れ込む
未燃ガスを減少させ、排気管内における未燃ガスの燃焼
による温度上昇を抑制し、排気温度の上昇を抑制して触
媒の溶損を回避し、触媒の性能・耐久性を維持してい
る。
BEST MODE FOR CARRYING OUT THE INVENTION
When the speed of the vehicle reaches the preset maximum speed,
The control means controls the fuel injection amount supplied from the injector to all the cylinders and / or controls the air-fuel ratio to be leaner than the stoichiometric air-fuel ratio to reduce the unburned gas flowing into the exhaust pipe, Thus, the temperature rise due to the combustion of the unburned gas is suppressed, the rise in the exhaust gas temperature is suppressed, and the catalyst is prevented from being melted.

【0011】[0011]

【実施例】以下図面に基づいてこの発明の実施例を詳細
に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

【0012】図1及び図2はこの発明の実施例を示すも
のである。図2において、2は図示しない車両の最高速
度制御装置である。
FIGS. 1 and 2 show an embodiment of the present invention. In FIG. 2, reference numeral 2 denotes a maximum speed control device for a vehicle (not shown).

【0013】この最高速度制御装置2は、車両に搭載さ
れるエンジン(図示せず)の複数個の図示しない気筒に
燃料を夫々供給するインジェクタ4を設けるとともに、
車両の速度を検知する速度検知手段6を設け、車両の速
度が予め設定される最高速度に達した際に所定の制御に
よってエンジン出力を抑制し車両の速度を最高速度以下
に制御手段8によって制御している。
The maximum speed control device 2 includes injectors 4 for supplying fuel to a plurality of cylinders (not shown) of an engine (not shown) mounted on a vehicle, respectively.
Speed detecting means 6 for detecting the speed of the vehicle is provided. When the speed of the vehicle reaches a preset maximum speed, the engine output is suppressed by a predetermined control, and the speed of the vehicle is controlled to be lower than the maximum speed by the control means 8. doing.

【0014】そして、車両の速度が予め設定される最高
速度に達した際には、全ての気筒に前記インジェクタ4
から供給される燃料噴射量を減少させるべく制御する機
能および/または空燃比(A/F)を理論空燃比よりも
希薄な状態とすべく制御する機能を前記制御手段8に付
加して設ける構成とする。
When the vehicle speed reaches a preset maximum speed, the injectors 4 are set in all cylinders.
A function of adding to the control means 8 a function of controlling the fuel injection amount supplied from the controller and / or a function of controlling the air-fuel ratio (A / F) to be a state leaner than the stoichiometric air-fuel ratio. And

【0015】詳述すれば、図2に示す如く、制御手段8
に速度検知手段6を接続して設けるとともに、インジェ
クタ4を接続して設け、制御手段8は、速度検知手段6
からの検知信号を入力し、インジェクタ4に制御信号を
出力する。
More specifically, as shown in FIG.
The speed detecting means 6 is connected to and provided with the injector 4, and the control means 8 is connected to the speed detecting means 6.
And outputs a control signal to the injector 4.

【0016】また、前記制御手段8は、例えば車両の速
度が予め設定される最高速度150Km/hに達した際
に、全ての気筒に前記インジェクタ4から供給される燃
料噴射量を70%とすべく減少させ、空燃比を理論空燃
比よりも希薄な状態(A/F=16)とすべく制御する
ものである。
The control means 8 sets the fuel injection amount supplied from the injector 4 to all cylinders to 70% when, for example, the vehicle speed reaches a preset maximum speed of 150 km / h. The air-fuel ratio is controlled so that the air-fuel ratio becomes leaner than the stoichiometric air-fuel ratio (A / F = 16).

【0017】次に図1の車両用最高速度制御装置2の制
御用フローチャートに沿って作用を説明する。
Next, the operation will be described with reference to the control flowchart of the maximum speed control device 2 for a vehicle shown in FIG.

【0018】先ず、前記制御手段8内の制御用プログラ
ムがスタート(100)すると、車速検知手段6によっ
て検出される車両の速度Vと予め設定される最高速度1
50Km/hとの比較判断(102)を行う。
First, when the control program in the control means 8 starts (100), the speed V of the vehicle detected by the vehicle speed detection means 6 and the preset maximum speed 1
A comparison judgment (102) with 50 km / h is performed.

【0019】この比較判断(102)において、速度V
が最高速度150Km/h未満の場合には、後述する第
1気筒の燃料を復帰させる処理(110)に移行させ、
比較判断(102)において、速度Vが最高速度150
Km/h以上となった場合には、全ての気筒にインジェ
クタ4から供給される燃料噴射量を70%とすべく減少
させる(104)。
In this comparison judgment (102), the speed V
If the maximum speed is less than 150 Km / h, the process proceeds to a process (110) for returning the fuel of the first cylinder described below,
In the comparison judgment (102), the speed V is set to the maximum speed 150
When it becomes equal to or higher than Km / h, the fuel injection amount supplied from the injector 4 to all the cylinders is reduced to 70% (104).

【0020】また、全ての気筒へのインジェクタ4の燃
料噴射量を70%に減少処理(104)した後に、複数
個の気筒の内の、例えば第1気筒の燃料カット(10
6)を行い、車両の速度Vと設定速度(最高速度からヒ
スを設けた速度)、例えば140Km/hとの比較判断
(108)を行う。
Further, after the fuel injection amount of the injector 4 to all the cylinders is reduced to 70% (104), the fuel cut (10) of, for example, the first cylinder of the plurality of cylinders is performed.
6) is performed, and a comparison judgment (108) is made between the vehicle speed V and a set speed (a speed at which a hiss is provided from the maximum speed), for example, 140 km / h.

【0021】そして、この比較判断(108)におい
て、速度Vが設定速度140Km/h未満の場合には、
前記第1気筒の燃料を復帰させる処理(110)に移行
させ、他の気筒の燃料噴射を通常の状態(例えばA/F
=13)とし、プログラムをエンド(112)させると
ともに、比較判断(108)において、速度Vが設定速
度140Km/h以上である場合には、例えば、上述の
全ての気筒にインジェクタ4から供給される燃料噴射量
を70%とすべく減少させる処理(104)に戻す。
In the comparison judgment (108), when the speed V is lower than the set speed 140 Km / h,
The process shifts to the process (110) for returning the fuel of the first cylinder, and the fuel injection of the other cylinder is performed in a normal state (for example, A / F).
= 13), the program is ended (112), and if the speed V is equal to or higher than the set speed of 140 Km / h in the comparison judgment (108), for example, the fuel is supplied from the injector 4 to all the cylinders described above. The process returns to the process (104) for reducing the fuel injection amount to 70%.

【0022】さすれば、燃料制御によって排気管内を流
れ込む未燃ガスが十分に減少され、排気管内における未
燃ガスの燃焼による温度上昇が抑制される。
Then, the unburned gas flowing into the exhaust pipe is sufficiently reduced by the fuel control, and the temperature rise due to the combustion of the unburned gas in the exhaust pipe is suppressed.

【0023】これにより、燃料噴射量の減少および/ま
たは空燃比の希薄化、例えば全ての気筒に前記インジェ
クタ4から供給される燃料噴射量を70%とすべく減少
させることによって排気管に流れ込む未燃ガスを減少さ
せることができ、排気管内における未燃ガスの燃焼によ
る温度上昇を抑制し得て、排気温度の上昇を抑制するこ
とができる。
As a result, the fuel injection amount is reduced and / or the air-fuel ratio is made lean, for example, by reducing the fuel injection amount supplied from the injector 4 to all cylinders to 70%. The fuel gas can be reduced, the temperature rise due to the combustion of the unburned gas in the exhaust pipe can be suppressed, and the rise in the exhaust gas temperature can be suppressed.

【0024】また、排気温度の上昇を抑制し得ることに
より、触媒の溶損を回避でき、触媒の性能・耐久性を維
持し得て、触媒の使用寿命が長くなり、経済的に有利で
あるとともに、排気管等の耐久性をも向上させることが
できる。
Further, since the rise in the exhaust gas temperature can be suppressed, the catalyst can be prevented from being melted, the performance and durability of the catalyst can be maintained, and the service life of the catalyst can be prolonged, which is economically advantageous. At the same time, the durability of the exhaust pipe and the like can be improved.

【0025】更に、前記インジェクタ4から供給される
燃料噴射量を減少させて空燃比を希薄状態とすれば、燃
費を向上させることができ、経済的に有利である。
Further, if the air-fuel ratio is made lean by reducing the fuel injection amount supplied from the injector 4, fuel efficiency can be improved, which is economically advantageous.

【0026】なお、この発明は上述実施例に限定される
ものではなく、種々の応用改変が可能である。
It should be noted that the present invention is not limited to the above-described embodiment, and various applications and modifications are possible.

【0027】例えば、この発明の実施例においては、前
記制御手段8は、車両の速度が予め設定される最高速度
150Km/hに達した際に、全ての気筒にインジェク
タから供給される燃料噴射量を70%とすべく減少させ
る制御を行ったが、70%以外の減少、つまり0%〜9
9%の範囲で任意に減少させることが可能である。全て
の気筒にインジェクタから供給される燃料噴射量を0%
とすれば、燃料カット状態となるものである。
For example, in the embodiment of the present invention, when the vehicle speed reaches a preset maximum speed of 150 km / h, the control means 8 controls the fuel injection amount supplied from the injector to all cylinders. Was reduced to 70%, but a reduction other than 70%, that is, 0% to 9% was performed.
It is possible to reduce arbitrarily in the range of 9%. Fuel injection amount supplied from injector to all cylinders is 0%
In this case, the fuel is cut off.

【0028】また、この発明の実施例においては、イン
ジェクタから供給される燃料噴射量を減少させて空燃比
を理論空燃比よりも希薄な状態としたが、吸入空気量を
増加させて空燃比を理論空燃比よりも希薄な状態とする
ことも可能である。
In the embodiment of the present invention, the air-fuel ratio is made leaner than the stoichiometric air-fuel ratio by decreasing the fuel injection amount supplied from the injector. However, the air-fuel ratio is increased by increasing the intake air amount. It is also possible to make the state leaner than the stoichiometric air-fuel ratio.

【0029】更に、この発明の実施例は、一実施例を示
すものであり、間引き噴射制御や点火時期制御、吸入空
気量制御等と組み合わせて制御することも可能である。
Further, the embodiment of the present invention shows one embodiment, and can be controlled in combination with thinning injection control, ignition timing control, intake air amount control and the like.

【0030】更にまた、この発明の実施例においては、
速度検知手段によって車両の最高速度を検知する構成と
したが、速度検知手段の代わりに、エンジン回転数検知
手段を使用し、エンジンの最高回転数制御を行うことも
可能である。
Further, in the embodiment of the present invention,
Although the maximum speed of the vehicle is detected by the speed detecting means, it is also possible to use the engine speed detecting means instead of the speed detecting means to control the maximum engine speed.

【0031】[0031]

【発明の効果】以上詳細に説明した如くこの発明によれ
ば、車両に搭載されるエンジンの複数個の気筒に燃料を
夫々供給するインジェクタを設けるとともに車両の速度
を検知する速度検知手段を設け、車両の速度が予め設定
される最高速度に達した際に所定の制御によってエンジ
ン出力を抑制し車両の速度を最高速度以下に制御する制
御手段を有する車両用最高速度制御装置において、車両
の速度が予め設定される最高速度に達した際には、全て
の気筒にインジェクタから供給される燃料噴射量を減少
させるべく制御する機能および/または空燃比を理論空
燃比よりも希薄な状態とすべく制御する機能を制御手段
に付加して設けたので、燃料噴射量の減少および/また
は空燃比の希薄化によって排気管に流れ込む未燃ガスを
減少させることができ、排気管内における未燃ガスの燃
焼による温度上昇を抑制し得て、排気温度の上昇を抑制
することができる。また、排気温度の上昇を抑制し得る
ことにより、触媒の溶損を回避でき、触媒の性能・耐久
性を維持し得て、触媒の使用寿命が長くなり、経済的に
有利であるとともに、排気管等の耐久性をも向上させ得
る。更に、前記インジェクタから供給される燃料噴射量
を減少させて空燃比を希薄状態とすれば、燃費を向上さ
せることができ、経済的に有利である。
As described above in detail, according to the present invention, an injector for supplying fuel to each of a plurality of cylinders of an engine mounted on a vehicle is provided, and speed detecting means for detecting a speed of the vehicle is provided. When the vehicle speed reaches a preset maximum speed, a maximum speed control device for a vehicle having control means for controlling engine output by a predetermined control and controlling the vehicle speed to be equal to or lower than the maximum speed. When a preset maximum speed is reached, a function of controlling the fuel injection amount supplied from the injector to all cylinders and / or a function of controlling the air-fuel ratio to be leaner than the stoichiometric air-fuel ratio Is added to the control means, so that the amount of unburned gas flowing into the exhaust pipe can be reduced by reducing the fuel injection amount and / or leaning the air-fuel ratio. Can, be obtained by suppressing the temperature rise due to the combustion of unburned gas in the exhaust pipe, it is possible to suppress the increase in the exhaust temperature. In addition, by suppressing the rise in the exhaust gas temperature, it is possible to avoid erosion of the catalyst, maintain the performance and durability of the catalyst, prolong the service life of the catalyst, and be economically advantageous. The durability of the pipe and the like can also be improved. Further, if the air-fuel ratio is made lean by reducing the fuel injection amount supplied from the injector, fuel efficiency can be improved, which is economically advantageous.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明の実施例を示す車両用最高速度制御装
置の制御用フローチャートである。
FIG. 1 is a control flowchart of a vehicular maximum speed control device showing an embodiment of the present invention.

【図2】車両用最高速度制御装置の概略ブロック図であ
る。
FIG. 2 is a schematic block diagram of a maximum speed control device for a vehicle.

【符号の説明】[Explanation of symbols]

2 車両用最高速度制御装置 4 インジェクタ 6 速度検知手段 8 制御手段 2 Maximum speed control device for vehicle 4 Injector 6 Speed detecting means 8 Control means

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 車両に搭載されるエンジンの複数個の気
筒に燃料を夫々供給するインジェクタを設けるとともに
車両の速度を検知する速度検知手段を設け、車両の速度
が予め設定される最高速度に達した際に所定の制御によ
ってエンジン出力を抑制し車両の速度を最高速度以下に
制御する制御手段を有する車両用最高速度制御装置にお
いて、車両の速度が予め設定される最高速度に達した際
には、全ての気筒に前記インジェクタから供給される燃
料噴射量を減少させるべく制御する機能および/または
空燃比を理論空燃比よりも希薄な状態とすべく制御する
機能を前記制御手段に付加して設けたことを特徴とする
車両用最高速度制御装置。
An injector for supplying fuel to a plurality of cylinders of an engine mounted on a vehicle is provided, and speed detecting means for detecting a speed of the vehicle is provided, so that the speed of the vehicle reaches a preset maximum speed. When the vehicle speed reaches a preset maximum speed in a vehicle maximum speed control device having control means for suppressing engine output by a predetermined control and controlling the speed of the vehicle to be equal to or less than the maximum speed. A function of controlling the fuel injection amount supplied from the injector to all the cylinders to reduce the amount of fuel injection and / or a function of controlling the air-fuel ratio to be leaner than the stoichiometric air-fuel ratio. A maximum speed control device for a vehicle.
JP8217955A 1996-07-31 1996-07-31 Maximum speed control device for vehicle Pending JPH1044828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8217955A JPH1044828A (en) 1996-07-31 1996-07-31 Maximum speed control device for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8217955A JPH1044828A (en) 1996-07-31 1996-07-31 Maximum speed control device for vehicle

Publications (1)

Publication Number Publication Date
JPH1044828A true JPH1044828A (en) 1998-02-17

Family

ID=16712345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8217955A Pending JPH1044828A (en) 1996-07-31 1996-07-31 Maximum speed control device for vehicle

Country Status (1)

Country Link
JP (1) JPH1044828A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001173497A (en) * 1999-12-21 2001-06-26 Mitsubishi Motors Corp Fuel controller for internal combustion engine
JP2004150806A (en) * 2002-10-28 2004-05-27 Nissan Diesel Motor Co Ltd Motor lorry with speed alarm
KR101704247B1 (en) * 2015-08-24 2017-02-07 현대자동차주식회사 Method for maximum speed limit of vehicle
US10973167B2 (en) 2017-01-27 2021-04-13 Kubota Corporation Traveling vehicle
US11161417B2 (en) 2017-02-17 2021-11-02 Kubota Corporation Vehicle with maximum vehicle speed setting unit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001173497A (en) * 1999-12-21 2001-06-26 Mitsubishi Motors Corp Fuel controller for internal combustion engine
JP2004150806A (en) * 2002-10-28 2004-05-27 Nissan Diesel Motor Co Ltd Motor lorry with speed alarm
KR101704247B1 (en) * 2015-08-24 2017-02-07 현대자동차주식회사 Method for maximum speed limit of vehicle
CN106476625A (en) * 2015-08-24 2017-03-08 现代自动车株式会社 The method limiting the maximal rate of vehicle
US9726102B2 (en) 2015-08-24 2017-08-08 Hyundai Motor Company Method of limiting maximum speed of vehicle
US10973167B2 (en) 2017-01-27 2021-04-13 Kubota Corporation Traveling vehicle
US11161417B2 (en) 2017-02-17 2021-11-02 Kubota Corporation Vehicle with maximum vehicle speed setting unit

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