JPS6316842Y2 - - Google Patents
Info
- Publication number
- JPS6316842Y2 JPS6316842Y2 JP8074781U JP8074781U JPS6316842Y2 JP S6316842 Y2 JPS6316842 Y2 JP S6316842Y2 JP 8074781 U JP8074781 U JP 8074781U JP 8074781 U JP8074781 U JP 8074781U JP S6316842 Y2 JPS6316842 Y2 JP S6316842Y2
- Authority
- JP
- Japan
- Prior art keywords
- engine
- output
- detection device
- exhaust
- outputs
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 28
- 230000000994 depressogenic effect Effects 0.000 claims description 4
- 239000000446 fuel Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
【考案の詳細な説明】
本考案は可変気筒エンジン塔載車両のブレーキ
装置の改良に関し、更に詳しくは、車両が減気筒
運転中であつても排気ブレーキ稼動時には全気筒
の吸排気弁が作動して排気ブレーキを効率良く作
動させるようにした可変気筒エンジン塔載車両の
ブレーキ制御装置に関する。[Detailed description of the invention] This invention relates to an improvement of the brake system for a vehicle equipped with a variable cylinder engine. The present invention relates to a brake control device for a vehicle equipped with a variable cylinder engine, which operates an exhaust brake efficiently.
従来可変気筒エンジンを塔載する車両が減気筒
運転状態で減速を行なうと稼動気筒数が少ないた
めにエンジンブレーキが効果的に作用せず、また
この状態で排気ブレーキを併用作動させてもやは
り稼動気筒数が少ないために排気ブレーキも効果
的に作用せず、ブレーキ力の不足による危険性が
あり、運転者はフツトブレーキを多用しなければ
ならないという欠点があつた。 Conventionally, when a vehicle equipped with a variable cylinder engine decelerates with reduced cylinder operation, the engine brake does not work effectively because the number of operating cylinders is small, and even if the exhaust brake is operated in conjunction with this condition, the engine brake still operates. Due to the small number of cylinders, the exhaust brake did not work effectively, creating a risk of insufficient braking force and requiring the driver to use the foot brake frequently.
そこで可変気筒エンジンを塔載する車両が減気
筒運転状態で減速を行なう時は直ちに全気筒の吸
排気弁を作動させてエンジンブレーキを効果的に
作用させるようにした車両が考えられたが、この
ような車両では減筒運転への移行のための吸排気
弁作動制御装置の切換頻度が高くなつて耐久性、
信頼性の上で好ましくないという欠点がある。 Therefore, when a vehicle equipped with a variable cylinder engine decelerates with reduced cylinder operation, the intake and exhaust valves of all cylinders are immediately activated to effectively apply engine braking. In such vehicles, the frequency of switching the intake and exhaust valve operation control device to transition to reduced-cylinder operation increases, resulting in reduced durability and
It has the disadvantage of being unfavorable in terms of reliability.
本考案の目的は可変気筒エンジン塔載車両の減
速時における前記従来のような欠点を解消し、可
変気筒エンジン塔載車両の減速時、即ちエンジン
ブレーキあるいは排気ブレーキによつて制動させ
る場合、走行条件に応じた最適のブレーキ力が得
られる優れた可変気筒エンジン塔載車両のブレー
キ制御装置を提供することである。 The purpose of the present invention is to eliminate the above-mentioned drawbacks of the conventional vehicle when decelerating a vehicle equipped with a variable cylinder engine, and to improve the driving condition when braking is performed by engine brake or exhaust brake. An object of the present invention is to provide an excellent brake control device for a vehicle equipped with a variable cylinder engine, which can obtain an optimal braking force depending on the vehicle.
前記目的を達成するために本考案ではエンジン
の負荷を検出してその値が設定値以下の時に一部
気筒への燃料の供給を遮断し、かつ、その気筒の
吸排気弁の作動を停止させるようにした可変気筒
エンジンを塔載した車両において、アクセルペダ
ルが踏まれていない時に出力するアクセル開度検
出装置とエンジン回転数が設定値以上の時に出力
するエンジン回転数検出装置と排気ブレーキスイ
ツチがオンの時に出力する排気ブレーキ作動検出
装置とを設け、更に前記エンジンが一部気筒運転
状態で前記３つの装置全てに出力があるときに前
記エンジンの作動停止気筒の吸排気弁の作動を復
活させるように構成したことを特徴としている。 In order to achieve the above object, the present invention detects the engine load, and when the load value is below a set value, cuts off the supply of fuel to some cylinders, and stops the operation of the intake and exhaust valves of that cylinder. In a vehicle equipped with such a variable cylinder engine, an accelerator opening detection device outputs an output when the accelerator pedal is not depressed, an engine rotation speed detection device outputs an output when the engine rotation speed exceeds a set value, and an exhaust brake switch. and an exhaust brake operation detection device that outputs an output when the engine is turned on, and further restores the operation of the intake and exhaust valves of the cylinders in which the engine is inoperable when the engine is in a partial cylinder operation state and all three devices have outputs. It is characterized by being configured as follows.
以下図面を用いて本考案の実施例を説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図および第２図はアクセル開度検出装置１
と排気ブレーキ作動検出装置２の概略回路構成図
である。アクセルペダル（図示せず）に取付けら
れ、アクセルペダルが踏まれない時にオンするア
クセルスイツチ３を有するアクセル開度検出装置
１は、アクセルスイツチ３がオンするとバツテリ
４の電圧を、例えば抵抗の組み合わせによつて分
圧する変換器５によつて論理信号“１”のレベル
にして出力するものであり、排気ブレーキ作動状
態検出装置２は排気ブレーキスイツチ６がオンの
時にバツテリ４の電圧を変換器７により変換して
“１”の信号を出力するものである。ここでアク
セル開度検出装置１および排気ブレーキ作動検出
装置２の出力をそれぞれａ，ｂとする。 Figures 1 and 2 show accelerator opening detection device 1.
2 is a schematic circuit configuration diagram of an exhaust brake operation detection device 2. FIG. The accelerator opening detection device 1 includes an accelerator switch 3 that is attached to an accelerator pedal (not shown) and is turned on when the accelerator pedal is not depressed. Therefore, the converter 5 that divides the voltage converts the voltage into a logic signal "1" and outputs it, and the exhaust brake operating state detecting device 2 converts the voltage of the battery 4 through the converter 7 when the exhaust brake switch 6 is on. It converts and outputs a "1" signal. Here, the outputs of the accelerator opening detection device 1 and the exhaust brake operation detection device 2 are assumed to be a and b, respectively.
第３図はエンジン回転数検出装置８の構成を示
しており、回転数センサ９により周波数で検出さ
れたエンジン回転数は−ｖ変換器１０で電圧に
変換されて比較器１１に入力されるようになつて
いる。比較器１１は抵抗R1で定められる設定値
M1を入力電圧が越える時に“０”の信号を出力
し、入力電圧が設定値M1以下の時に“１”の信
号を出力するようになつている。そして比較器１
１の出力はインバータ１２によつて反転されて出
力されるように構成してある。従つて、例えば設
定値M1を抵抗R1によつてエンジン回転数が
800rpmの時の−ｖ変換器１０の出力電圧値の
ように定めれば、本考案のエンジン回転数検出装
置８はエンジン回転数が800rpmを越える時に
“１”の信号を出力し、エンジン回転数が800rpm
以下の時に“０”の信号を出力することになる。
ここで設定値M1＝800rpmとしたのはエンジンの
運転状態のアイドリングと減速運転とを区別する
ためであるからエンジン固有のアイドリング回転
数によつて最適の値を選ぶようにする。ここで、
エンジン回転数検出装置８の出力をｃとする。 FIG. 3 shows the configuration of the engine rotation speed detection device 8, in which the engine rotation speed detected as a frequency by the rotation speed sensor 9 is converted into voltage by a -v converter 10 and input to a comparator 11. It's getting old. Comparator 11 has a set value determined by resistor R 1
When the input voltage exceeds M1 , a signal of "0" is output, and when the input voltage is less than the set value M1, a signal of " 1 " is output. and comparator 1
The output of 1 is inverted by an inverter 12 and output. Therefore, for example, by changing the set value M 1 to the resistance R 1 , the engine speed can be changed.
If the output voltage value of the -v converter 10 at 800 rpm is determined, the engine speed detecting device 8 of the present invention outputs a signal of "1" when the engine speed exceeds 800 rpm, and the engine speed detecting device 8 outputs a signal of "1" when the engine speed exceeds 800 rpm. is 800rpm
A signal of "0" will be output in the following cases.
Here, the setting value M 1 =800 rpm is used to distinguish between idling and deceleration operation of the engine, so the optimum value is selected depending on the idling speed specific to the engine. here,
Let c be the output of the engine rotation speed detection device 8.
第４図は以上説明した検出装置を用いた本考案
の可変気筒エンジン塔載車両のブレーキ制御装置
を構成する吸排気弁作動制御装置１７の構成図で
ある。前記アクセル開度検出装置１、エンジン回
転数検出装置８、排気ブレーキ作動検出装置２の
出力ａ，ｃ，ｂはそれぞれ３入力のNAND回路
１６に入力し、このNAND回路１６の出力ｅは
NAND回路１５に入力する。更にNAND回路１
５のもう一方の入力端子には可変気筒エンジンの
気筒数切換信号ｄを入力するように構成する。気
筒数切換信号ｄは負荷検出器１３によつて検出さ
れたエンジン負荷が、比較器１４の抵抗R2によ
つて定められる設定値M2を越える時は吸排気弁
作動停止装置１８を制御する制御弁V1および燃
料噴射ノズル（図示せず）への燃料供給を制御す
る全気筒転を指示する“０”の信号となり、エン
ジン負荷が設定値M2以下の時は前記制御弁V1，
V2への信号を遮断して減気筒運転を指示する
“１”の信号となるものである。そしてNAND回
路１５の出力は吸排気弁作動停止装置１８を制
御する制御弁V1に出力し、前記出力が“０”
の時にはこの装置を作動させて一部気筒の吸排気
弁１９の作動を止めたままとし、“１”の時には
この吸排気弁１９の作動を復活させて全気筒の吸
排気弁を作動させるように構成する。 FIG. 4 is a configuration diagram of an intake/exhaust valve actuation control device 17 that constitutes a brake control device for a vehicle equipped with a variable cylinder engine according to the present invention, using the detection device described above. Outputs a, c, and b of the accelerator opening detection device 1, engine rotation speed detection device 8, and exhaust brake operation detection device 2 are each input to a 3-input NAND circuit 16, and the output e of this NAND circuit 16 is
Input to NAND circuit 15. Furthermore, NAND circuit 1
The other input terminal of the engine 5 is configured to receive a cylinder number switching signal d of the variable cylinder engine. The cylinder number switching signal d controls the intake and exhaust valve actuation stop device 18 when the engine load detected by the load detector 13 exceeds a set value M 2 determined by the resistance R 2 of the comparator 14. The signal becomes "0" instructing full cylinder rotation to control the fuel supply to the control valve V1 and the fuel injection nozzle (not shown), and when the engine load is below the set value M2 , the control valve V1 ,
This is a "1" signal that cuts off the signal to V2 and instructs reduced cylinder operation. Then, the output of the NAND circuit 15 is output to the control valve V 1 that controls the intake/exhaust valve operation stop device 18, and the output becomes "0".
When the value is "1", this device is activated to keep the intake and exhaust valves 19 of some cylinders inactive, and when the value is "1", the operation of the intake and exhaust valves 19 is restored and the intake and exhaust valves of all cylinders are activated. Configure.
本考案の可変気筒エンジン塔載車両のブレーキ
装置を構成する吸排気弁作動制御装置の構成は以
上のようなもので、次にこの動作を説明する。 The configuration of the intake and exhaust valve operation control device constituting the brake device of the variable cylinder engine mounted vehicle of the present invention is as described above, and its operation will be explained next.
まず車両のエンジン負荷が大きく、車両が全気
筒運転を行なつている時は、前記気筒数切換信号
ｄは“０”である。従つてこの時NAND回路１
５の出力はNAND回路１５のもう一方の入力
ｅが何であつても“１”を出力し、全気筒の吸排
気弁１９は作動状態にある。 First, when the engine load of the vehicle is large and the vehicle is operating on all cylinders, the cylinder number switching signal d is "0". Therefore, at this time, NAND circuit 1
5 outputs "1" no matter what the other input e of the NAND circuit 15 is, and the intake and exhaust valves 19 of all cylinders are in the operating state.
次に車両のエンジン負荷が設定値M1以下で、
車両が減気筒運転を行なつている時は、前記気筒
数切換信号ｄは“１”であり、NAND回路１５
の出力はNAND回路１６の出力ｅに左右され
る。更に車両が減速運転を行なうアクセルペダル
が踏み込まれない状態を考えるとエンジン回転数
はアイドリング回転を越えているので、アクセル
開度検出装置１の出力ａおよびエンジン回転数検
出装置８の出力ｃは共に“１”となる。従つて前
記状態において、運転者が排気ブレーキスイツチ
６をオンにすれば排気ブレーキ作動検出装置２の
出力ｂが“１”となつてNAND回路１６の出力
ｅが“０”、即ちNAND回路１５の出力が
“１”となつて作動を停止している気筒の吸排気
弁１９が直ちに作動して全気筒作動状態となり、
排気ブレーキが効果的に作用し、車両には大きな
ブレーキが働く。ところが、同じく前記状態で運
転者が大きなブレーキ力は必要ないとして排気ブ
レーキスイツチ６をオフのままにしておけば排気
ブレーキ作動検出装置２の出力ｂは“０”で、
NAND回路１６の出力ｅが“１”、従つて
NAND回路１５の出力は“１”で減筒運転の
ままとなりその気筒の吸排気弁19は作動せず余計
なブレーキ力が車両に作用することを防ぐことが
できる。 Next, when the vehicle engine load is below the set value M1 ,
When the vehicle is operating with the number of cylinders reduced, the cylinder number switching signal d is "1", and the NAND circuit 15
The output of is influenced by the output e of the NAND circuit 16. Furthermore, if the vehicle is decelerating and the accelerator pedal is not depressed, the engine speed exceeds idling speed, so the output a of the accelerator opening detection device 1 and the output c of the engine speed detection device 8 are both "1". Therefore, in the above state, if the driver turns on the exhaust brake switch 6, the output b of the exhaust brake operation detection device 2 becomes "1" and the output e of the NAND circuit 16 becomes "0", i.e., the output of the NAND circuit 15 becomes "1", and the intake and exhaust valves 19 of the cylinders that are not in operation immediately operate, bringing all cylinders into operation.
The exhaust brake works effectively, and a large brake is applied to the vehicle. However, if the driver does not need a large braking force in the above state and leaves the exhaust brake switch 6 off, the output b of the exhaust brake operation detection device 2 will be "0",
The output e of the NAND circuit 16 is "1", so
The output of the NAND circuit 15 is "1", so the engine remains in reduced cylinder operation, the intake and exhaust valves 19 of the corresponding cylinders are not operated, and unnecessary braking force is prevented from being applied to the vehicle.
以上説明したように本考案の可変気筒エンジン
塔載車両のブレーキ制御装置は、可変気筒エンジ
ン塔載車両の減速時に、排気ブレーキスイツチが
オンの場合には全気筒の吸排気弁を作動させて大
きなブレーキ力を車両に働かせ、排気ブレーキス
イツチがオフの場合には減気筒状態とし余計なブ
レーキ力を車両に働かせないように構成したの
で、走行状態に応じた最適のブレーキ力が得ら
れ、安全性が増すという効果がある。 As explained above, the brake control device for a vehicle equipped with a variable cylinder engine according to the present invention operates the intake and exhaust valves of all cylinders when the exhaust brake switch is on during deceleration of a vehicle equipped with a variable cylinder engine. The system is configured so that brake force is applied to the vehicle, and when the exhaust brake switch is off, the cylinders are reduced and no unnecessary brake force is applied to the vehicle, so the optimal brake force can be obtained depending on the driving condition, increasing safety. This has the effect of increasing
また、減筒運転のための吸排気弁作動制御装置
の切換頻度が少なくなつてその耐久性、信頼性が
増すという効果もある。 Furthermore, the switching frequency of the intake/exhaust valve actuation control device for reduced-cylinder operation is reduced, which has the effect of increasing its durability and reliability.
第１図から第３図は本考案のアクセル開度検出
装置、排気ブレーキ作動検出装置およびエンジン
回転数検出装置の概略回路構成図、第４図は本考
案の可変気筒塔載車両のブレーキ制御装置を構成
する吸排気弁作動制御装置の一実施例の構成図で
ある。
１……アクセル開度検出装置、２……排気ブレ
ーキ作動検出装置、３……アクセルスイツチ、６
……排気ブレーキスイツチ、８……エンジン回転
数検出装置、９……回転数センサ、１０……−
ｖ変換器、１１，１５……比較器、１２……イン
バータ、１３……負荷検出器、１５，１６……
NAND回路、１７……吸排気弁作動制御装置。
1 to 3 are schematic circuit configuration diagrams of an accelerator opening detection device, an exhaust brake operation detection device, and an engine rotation speed detection device of the present invention, and FIG. 4 is a brake control device of a variable cylinder tower vehicle of the present invention. 1 is a configuration diagram of an embodiment of an intake/exhaust valve operation control device constituting the system. 1... Accelerator opening detection device, 2... Exhaust brake operation detection device, 3... Accelerator switch, 6
...Exhaust brake switch, 8...Engine speed detection device, 9...Rotation speed sensor, 10...-
v converter, 11, 15... comparator, 12... inverter, 13... load detector, 15, 16...
NAND circuit, 17... intake/exhaust valve operation control device.
Claims (1)
の時に一部気筒への燃料の供給を遮断し、かつ、
その気筒の吸排気弁の作動を停止させるようにし
た可変気筒エンジンを塔載した車両において、ア
クセルペダルが踏まれていない時に出力するアク
セル開度検出装置とエンジン回転数が設定値以上
の時に出力するエンジン回転数検出装置と排気ブ
レーキスイツチがオンの時に出力する排気ブレー
キ作動検出装置とを設け、更に前記エンジンが一
部気筒運転状態で前記３つの装置全てに出力があ
る時に前記エンジンの作動停止気筒の吸排気弁の
作動を復活させるように構成したことを特徴とす
る可変気筒エンジン塔載車両のブレーキ制御装
置。 Detects the engine load and cuts off the supply of fuel to some cylinders when the value is below a set value, and
In a vehicle equipped with a variable cylinder engine that stops the operation of the intake and exhaust valves of that cylinder, an accelerator opening detection device outputs an output when the accelerator pedal is not depressed, and an output when the engine speed exceeds a set value. an engine rotation speed detection device that outputs an output when an exhaust brake switch is on; and an exhaust brake operation detection device that outputs an output when the exhaust brake switch is on; and an exhaust brake operation detection device that outputs an output when the exhaust brake switch is on; A brake control device for a vehicle equipped with a variable cylinder engine, characterized in that it is configured to restore the operation of the intake and exhaust valves of the cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8074781U JPS6316842Y2 (en) | 1981-06-01 | 1981-06-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8074781U JPS6316842Y2 (en) | 1981-06-01 | 1981-06-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57191839U JPS57191839U (en) | 1982-12-04 |
| JPS6316842Y2 true JPS6316842Y2 (en) | 1988-05-13 |
Family
ID=29876289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8074781U Expired JPS6316842Y2 (en) | 1981-06-01 | 1981-06-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6316842Y2 (en) |
-
1981
- 1981-06-01 JP JP8074781U patent/JPS6316842Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57191839U (en) | 1982-12-04 |
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