JPS5950851A - Negative pressure source of negative pressure system toggle joint for vehicle - Google Patents
Negative pressure source of negative pressure system toggle joint for vehicleInfo
- Publication number
- JPS5950851A JPS5950851A JP16137082A JP16137082A JPS5950851A JP S5950851 A JPS5950851 A JP S5950851A JP 16137082 A JP16137082 A JP 16137082A JP 16137082 A JP16137082 A JP 16137082A JP S5950851 A JPS5950851 A JP S5950851A
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- air ejector
- chamber
- air
- toggle joint
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、自動車その他の車両においてブレーキマスク
シリンダ等を倍力作動するのに用いもＡＩる負圧式倍力
装置の負圧源装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a negative pressure source device for a negative pressure booster, which is also used for boosting a brake mask cylinder or the like in an automobile or other vehicle.
従来、車両用負圧式倍力装置の負圧源装置として、内燃
機関の絞弁より下流の吸入系に負圧取出孔を設け、この
負圧取出孔に負圧倍力装置の負圧室を逆止弁を介して接
続し、エンジンの吸入負圧を、倍力装置の動力としてそ
の負圧室に蓄えるようにしたものが知られている。Conventionally, as a negative pressure source device for a negative pressure booster for a vehicle, a negative pressure outlet hole is provided in the intake system downstream of the throttle valve of the internal combustion engine, and the negative pressure chamber of the negative pressure booster is connected to this negative pressure outlet hole. A device is known in which the engine is connected via a check valve and the engine's intake negative pressure is stored in the negative pressure chamber as power for the booster.
ところで、自動車に搭載された内燃機関の形式、その付
属機器の種類によっては（例えば、機関が２サイクル式
の場合、多連式気化器を備える場合、あるいは自動変速
機付の場合）、機関の使用負圧が非常に低く、一般には
−５００ｍａｒ’、９程度あるの゛に対し、−３００〜
−４００朋Ｉ１ｇ 程度しか得られないことがある。こ
のような場合、従来では、倍刃装置の一受圧部の受圧面
積を広げて所定の倍力比を確保しているが、そのように
すれば倍力装置の大型化を招き、車両の狭いエンジンル
ーム等への設置を困難にする問題がある。By the way, depending on the type of internal combustion engine installed in a car and the type of its accessory equipment (for example, if the engine is a two-stroke type, if it is equipped with a multiple carburetor, or if it is equipped with an automatic transmission), the engine's The negative pressure used is very low, generally around -500mar', 9, but -300 to
In some cases, only about -400 I1g can be obtained. In such cases, conventionally, the pressure-receiving area of one pressure-receiving part of the double-blade device is widened to ensure a predetermined boost ratio. There is a problem that makes installation in an engine room or the like difficult.
本発明は上記に鑑み提案されたもので、内燃機関の吸入
負圧が低い場合でも空気エゼクタを用いることにより負
圧式倍力装置に、その作動に必要ｌ、【高負圧を供給し
得るようにした、簡単有効な前記負圧源装置を提供する
ことを目的とし、その特徴は内燃機関の絞弁より下流の
吸入系に設けた負圧取出孔に、空気入１１が大気と連通
ずる空気エゼクタの空気１．１目−Ｊを接続し、この空
気エゼクタの減圧室に負圧式倍力装置の負圧室を接続し
たところにある。The present invention has been proposed in view of the above, and uses an air ejector to supply high negative pressure to the negative pressure booster, even when the intake negative pressure of the internal combustion engine is low. The purpose of the present invention is to provide a simple and effective negative pressure source device, which is characterized by an air inlet 11 connected to the negative pressure outlet provided in the intake system downstream of the throttle valve of the internal combustion engine. This is where the air 1.1-J of the ejector is connected, and the negative pressure chamber of the negative pressure booster is connected to the reduced pressure chamber of this air ejector.
以下、図面により本発明の一実施例について説明すると
、第１図においてＳは自動車のブレーキ４スタシリンダ
を作動するための公知の負正式倍力装置で、そのブース
タシェル１内にはダイヤフラム伺ブースタピストン２に
より負圧室３が画成されている。またＥは自動車の内燃
機関で、その吸入系は吸入マニホールド５と、その上流
端に装着された気化器６とより構成され、気化器６は従
来普通のように絞弁７を有する。この絞弁７より下流の
吸入系４に負圧取出孔８が設けられ、この負圧取出孔８
と前記倍力装置Ｓの負圧室３との間を結ぶ負圧通路９に
空気エゼクタ１０が次のように設けられる。尚、負圧通
路９において負圧取出孔８と空気エゼクタ１０間の部分
を上流負圧通路９ａ、空気エゼクタ１０と負圧室３間の
部分を下流負圧通路９ｂと呼ぶ。Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In FIG. A negative pressure chamber 3 is defined by the piston 2 . Further, E is an internal combustion engine of an automobile, and its intake system is composed of an intake manifold 5 and a carburetor 6 mounted at its upstream end, and the carburetor 6 has a throttle valve 7 as usual. A negative pressure outlet hole 8 is provided in the suction system 4 downstream of this throttle valve 7, and this negative pressure outlet hole 8
An air ejector 10 is provided in the negative pressure passage 9 connecting the negative pressure chamber 3 of the booster S and the negative pressure chamber 3 of the booster S as follows. In the negative pressure passage 9, the part between the negative pressure outlet hole 8 and the air ejector 10 is called an upstream negative pressure passage 9a, and the part between the air ejector 10 and the negative pressure chamber 3 is called a downstream negative pressure passage 9b.
第２図に示すように、空気エゼクタ１００本体１１には
、その前面に開口する空気人口１２と、その後面に開Ｉ
］する空気出口１３と、その側面に開口する吸引口１４
と、吸引口１４及び空気１」［１１３にそれぞれ連なる
減圧室１５及び出口室１６と、この両室１５ｉ６間を連
通ずるディフューザ１７とが設けられ、空気出口１３は
上流負圧通路９ａの下流端と接続され、また吸引（」１
４は下流負圧通路９ｂの上流端と接続される。ディフュ
ーザ１７は減圧室１５の一端面に形成した先細テーバ部
１８と、出口室１６の一端面に形成した末広テーパ部１
９と、この両テーパ部１８ 、１９ 間を接ぐのど部２
０とよりなっており、減圧室１５には空気１旧」１３に
連なり且つ噴孔をのど部２０に向けたノズル２１が先細
テーバ部１８に近接して配設される。As shown in FIG. 2, the main body 11 of the air ejector 100 has an air intake 12 that opens on the front surface and an I opening on the rear surface.
] An air outlet 13 and a suction port 14 opened on the side thereof
A decompression chamber 15 and an outlet chamber 16 are connected to the suction port 14 and the air 1'' [113, respectively, and a diffuser 17 is provided to communicate between the two chambers 15i6, and the air outlet 13 is connected to the downstream end of the upstream negative pressure passage 9a. It is also connected to suction ("1
4 is connected to the upstream end of the downstream negative pressure passage 9b. The diffuser 17 includes a tapered tapered portion 18 formed on one end surface of the decompression chamber 15 and a diverging taper portion 1 formed on one end surface of the outlet chamber 16.
9 and the throat portion 2 that connects both the tapered portions 18 and 19.
The decompression chamber 15 is provided with a nozzle 21 that is connected to the air 13 and has a nozzle orifice directed toward the throat portion 20 in the vicinity of the tapered tapered portion 18 .
さらに本体１１には、ディフューザ１７を迂回し且つそ
れよりも流路抵抗の小さいバイパス２２が設けられ、こ
のバイパス２２に第１逆止弁２３が設けもれる。また第
１図に示すように、〕；イノくス２２と負圧室３との間
の負圧通路９には第２逆止弁２４が設けられ、第１及び
第２逆市弁２３゜２４はいずれも負圧室３側から負圧取
出孔８側への負圧の逆流を阻止するように構成される。Further, the main body 11 is provided with a bypass 22 that bypasses the diffuser 17 and has a smaller flow resistance than the diffuser 17, and a first check valve 23 is provided in the bypass 22. Further, as shown in FIG. 1, a second check valve 24 is provided in the negative pressure passage 9 between the innox 22 and the negative pressure chamber 3, and the first and second check valves 23° 24 are configured to prevent backflow of negative pressure from the negative pressure chamber 3 side to the negative pressure outlet hole 8 side.
次にこの実施例の作用を説明する。Next, the operation of this embodiment will be explained.
いま、内燃機関Ｅが始動さＡ１、そＡ１に伴い絞弁７よ
り下流の吸入系４に負圧が発４卜すれば、この吸入負圧
は負圧取出孔８より取出され１原質用通路９αを経て出
「ｊ室１６とノ；イ／Ｃス２２とに作用する。そして、
バイパス２２に作用ずろ負圧は第１逆止弁２３を開いて
下流負圧通路９ｂへ進み、次いで第２逆止弁２４を開い
て倍力装置、５の負ＩＴ：。Now, when the internal combustion engine E is started A1 and negative pressure is generated in the suction system 4 downstream of the throttle valve 7, this suction negative pressure is taken out from the negative pressure outlet hole 8 and used for raw material 1. It acts on the J chamber 16 and the I/C chamber 22 through the passage 9α.
The negative pressure acting on the bypass 22 opens the first check valve 23 and proceeds to the downstream negative pressure passage 9b, and then opens the second check valve 24 to generate the negative IT of booster 5.
室３に到達し、ここに蓄えられる。It reaches room 3 and is stored here.
一方、出口室１６に作用する負圧はディフューザ１７を
経てノズル２１の噴口に作用し、この負圧の吸引力を以
てノズル２１は空気入１コ１２より外気を吸入してディ
フューザ１７に向けて噴射し、空気の高速噴流を生起さ
せ、これに伴（・減圧室１５は減圧されるので、吸引口
１４より空気を吸引して下流負圧通路９ｂを更に減圧し
、即ち負圧室３の負圧を高める。そして、減圧室１５の
吸引負圧が機関Ｅの吸入負圧より高くなれば第１逆止弁
２３が閉じられるので、減圧室１５の負圧はバイパス２
２に短絡することなく負圧室３に確実に導入される。し
たがって、負圧室３には機関Ｅの吸入負圧と空気エゼク
タ１０の吸引負圧との総合負圧が蓄えられる。On the other hand, the negative pressure acting on the outlet chamber 16 acts on the nozzle of the nozzle 21 via the diffuser 17, and with the suction force of this negative pressure, the nozzle 21 sucks in outside air from the air inlet 12 and injects it toward the diffuser 17. As a result, a high-speed jet of air is generated, and as a result, the pressure in the vacuum chamber 15 is reduced, so air is sucked through the suction port 14 to further reduce the pressure in the downstream negative pressure passage 9b. Then, when the suction negative pressure in the pressure reducing chamber 15 becomes higher than the suction negative pressure of the engine E, the first check valve 23 is closed, so that the negative pressure in the pressure reducing chamber 15 is reduced to the bypass 2.
The device is reliably introduced into the negative pressure chamber 3 without short-circuiting to the device 2. Therefore, the total negative pressure of the suction negative pressure of the engine E and the suction negative pressure of the air ejector 10 is stored in the negative pressure chamber 3.
絞弁７を急開させて行う機関Ｅの加速運転や機関Ｅの運
転停止により、機関Ｅの吸入負圧が急減若しくは消去す
れば、空気エゼクタ１０の減圧機能が低下若しくは停止
するが、これに伴い第２逆止弁２４が直ちに閉じるので
、負圧室３の負圧が負圧通路９を逆流することは阻止さ
れる。If the suction negative pressure of the engine E suddenly decreases or disappears due to acceleration of the engine E or stoppage of the engine E by rapidly opening the throttle valve 7, the pressure reducing function of the air ejector 10 will decrease or stop. Since the second check valve 24 closes immediately, the negative pressure in the negative pressure chamber 3 is prevented from flowing back through the negative pressure passage 9.
尚、機関Ｅの始動後、負圧室３の負圧が機関Ｅの吸入負
圧の値に到達するまでの時間の長短があまり問題になら
ない場合には、バイパス２２及び第１逆止弁２３を省略
することができる。Note that if the length of time it takes for the negative pressure in the negative pressure chamber 3 to reach the value of the suction negative pressure of the engine E after starting the engine E does not matter much, the bypass 22 and the first check valve 23 can be omitted.
以−ヒのように本発明によれば、内燃機関の絞弁より下
流の吸入系に設けた負圧取出孔に、空気入１」が大気と
連通ずる空気エゼクタの空気１１冒１を接続し、この空
気エゼクタの減圧室に負圧式倍力装置の負圧室を接続し
たので、機関の吸入負圧により空気エゼクタを作動させ
て空気エゼクタの減圧室に発生する、機関の吸入負圧よ
りも高い吸引負圧を倍力装置の負圧室にり、えることが
でき、倍力装置の受圧部の受圧面積を特別拡張しなくと
も所望の倍力比を得ることができる。また、空気エゼク
タの駆動のために特別な流体ポンプを設けろ必要もない
から構成が簡単で負圧源装置を安価に提供することがで
き、その上、可動部が無いので故障が少ない等の効果が
ある。As described above, according to the present invention, the air 11 of the air ejector, whose air inlet 1' communicates with the atmosphere, is connected to the negative pressure outlet provided in the intake system downstream of the throttle valve of the internal combustion engine. Since the negative pressure chamber of the negative pressure booster is connected to the decompression chamber of this air ejector, the air ejector is operated by the engine's suction negative pressure, and the air ejector is operated by the engine's suction negative pressure, which is generated in the air ejector's decompression chamber. A high suction negative pressure can be obtained in the negative pressure chamber of the booster, and a desired boost ratio can be obtained without particularly expanding the pressure receiving area of the pressure receiving part of the booster. In addition, since there is no need to provide a special fluid pump to drive the air ejector, the configuration is simple and the negative pressure source device can be provided at low cost.Furthermore, since there are no moving parts, there are fewer failures. There is.
第１図は本発明装置の一実施例を示す概略側面図、第２
図はその要部である空気エゼクタ周りの拡大縦断１１１
［面図である。
ｌ′、′・・・内燃機関、Ｓ・・・負圧式倍力装置、３
・・・負ｒ−ＴＥ室、４・・・吸入系、７・・・絞弁、
８・・・負圧取出孔、１０・・・空気エゼクタ、１２・
・・空気入口、１３・・・空気量ＩＪ、 １４・・・
吸引し」、１５・・・減圧室、１６・・・１１冒−］室
、１７・・・ディフューザ
特許出願人 口信工業株式会社
回 本田技研工業株式会社FIG. 1 is a schematic side view showing one embodiment of the device of the present invention, and FIG.
The figure shows an enlarged longitudinal section 111 around the air ejector, which is the main part.
[This is a front view. l','...Internal combustion engine, S...Negative pressure booster, 3
... Negative r-TE chamber, 4... Suction system, 7... Throttle valve,
8... Negative pressure outlet hole, 10... Air ejector, 12...
...Air inlet, 13...Air amount IJ, 14...
15... Decompression chamber, 16... 11 -] chamber, 17... Diffuser patent applicant Kushin Kogyo Co., Ltd. Honda Motor Co., Ltd.
Claims (1)
、空気入口が大気と連通ずる空気エゼクタの空気出口を
接続し、この空気エゼクタの減圧室に負圧式倍力装置の
負圧室を接続してなる、車両用負圧式倍力装置の負圧源
装置。The air outlet of an air ejector whose air inlet communicates with the atmosphere is connected to the negative pressure outlet provided in the intake system downstream of the throttle valve of the internal combustion engine, and the negative pressure of the negative pressure booster is connected to the reduced pressure chamber of this air ejector. A negative pressure source device for a negative pressure booster for vehicles that connects chambers.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16137082A JPS5950851A (en) | 1982-09-16 | 1982-09-16 | Negative pressure source of negative pressure system toggle joint for vehicle |
| AU18766/83A AU545569B2 (en) | 1982-09-16 | 1983-09-06 | Vacuum source device |
| GB08324507A GB2129516B (en) | 1982-09-16 | 1983-09-13 | Vacuum source arrangement for vacuum booster for vehicles |
| FR8314686A FR2533186B1 (en) | 1982-09-16 | 1983-09-15 | VACUUM SUPPLY DEVICE DECOMPRESSOR FOR VEHICLES |
| US06/533,023 US4554786A (en) | 1982-09-16 | 1983-09-16 | Vacuum source device for vacuum booster for vehicles |
| DE19833333566 DE3333566A1 (en) | 1982-09-16 | 1983-09-16 | VACUUM SOURCE DEVICE OF A VACUUM AMPLIFIER FOR VEHICLES |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16137082A JPS5950851A (en) | 1982-09-16 | 1982-09-16 | Negative pressure source of negative pressure system toggle joint for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5950851A true JPS5950851A (en) | 1984-03-24 |
Family
ID=15733791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16137082A Pending JPS5950851A (en) | 1982-09-16 | 1982-09-16 | Negative pressure source of negative pressure system toggle joint for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5950851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0395028U (en) * | 1990-01-17 | 1991-09-27 |
-
1982
- 1982-09-16 JP JP16137082A patent/JPS5950851A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0395028U (en) * | 1990-01-17 | 1991-09-27 |
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