JPS6029367A - Negative-pressure source device of negative-pressure type booster for car - Google Patents
Negative-pressure source device of negative-pressure type booster for carInfo
- Publication number
- JPS6029367A JPS6029367A JP13844683A JP13844683A JPS6029367A JP S6029367 A JPS6029367 A JP S6029367A JP 13844683 A JP13844683 A JP 13844683A JP 13844683 A JP13844683 A JP 13844683A JP S6029367 A JPS6029367 A JP S6029367A
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- chamber
- air
- check valve
- negative
- 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
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
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られる負圧式倍力装
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 used to boost 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
負圧取出孔に負圧式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な、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 an internal combustion engine, and the negative pressure chamber of the negative pressure booster is connected to this negative pressure outlet hole. It is known that 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、多連気化器を備える場合、あるいは自動変速機付
の場＠）、機関の使用負圧が非常に低く、一般には−５
００ｚｙＪＩｇ程度あるのに対し、−３００〜−４００
ｍｌｎＨｇ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、倍力装置の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を生じる。By the way, depending on the type of internal combustion engine installed in the 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 use of the engine may be affected. Negative pressure is very low, typically -5
While there is about 00zyJIg, -300 to -400
Sometimes only about mlnHg can be obtained. In such cases, the conventional method is to widen the pressure receiving area of the pressure receiving part of the booster to ensure a predetermined boost ratio. This creates a problem that makes installation in a room, etc. 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、その作動に必要な高負圧を供給でき、
また倍力装置の負圧室の負圧が機関の吸入負圧の大きさ
に達するまでは空気エゼクタに頼ることなく機関の吸入
負圧を倍力装置に早急に供給し、負圧の蓄圧を素早く行
うことができ、しかも機関に吹返し現象があっても、そ
の吸入系の燃料が倍力装置へ侵入することを確実に防止
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、空気入口が大気と連通
ずる空気エゼクタの空気出口を連通し、この空気エゼク
タの減圧室に連なる吸引口に負圧式倍力装置の負圧室を
連通し、前記空気エゼクタのディフューザを迂回して前
記空気入口及び吸引口間を連通ずるバイパスに第１逆止
弁を、また前記吸引口に第２逆止弁をそれぞれ設け、前
記空気人口Ｋ、第２逆止弁、第１逆止弁及び空気出口を
この順序で上方より配置したところにある。The present invention has been proposed in view of the above, and even when the intake negative pressure of the internal combustion engine is low, by using an air ejector, the high negative pressure necessary for its operation can be supplied to the negative pressure booster.
In addition, until the negative pressure in the negative pressure chamber of the booster reaches the magnitude of the engine's suction negative pressure, the engine's suction negative pressure is immediately supplied to the booster without relying on the air ejector, and the negative pressure accumulated is reduced. To provide a simple and effective negative pressure source device which can be quickly operated and can surely prevent fuel in the suction system from entering the booster even if there is a blowback phenomenon in the engine. The feature is that the air outlet of the 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. A negative pressure chamber of a negative pressure booster is connected to a suction port connected to the air ejector, a first check valve is connected to a bypass that communicates between the air inlet and the suction port by bypassing the diffuser of the air ejector, and a first check valve is connected to the air ejector. A second check valve is provided at each, and the air population K, the second check valve, the first check valve, and the air outlet are arranged in this order from above.
以下、図面により本発明の実施例について説明すると、
先ず第１実施例を示す第１図及び第３図において、Ｓは
自動車のブレーキマスクシリンダ 、Ｍを作動するため
の公知の負圧式倍力装置であって、ブレーキベメ゛ルＢ
ｐにより操作される。この倍力装置Ｓのブースタシェル
１内にはダイヤフラム付ブースタピストン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４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の吸気道６
α入口にはエアクリーナＡｃが装着される。Hereinafter, embodiments of the present invention will be explained with reference to the drawings.
First, in FIGS. 1 and 3 showing the first embodiment, S is a known negative pressure booster for operating the brake mask cylinder, M, of an automobile;
Operated by p. A negative pressure chamber 3 is defined within a booster shell 1 of this booster S by a booster piston 2 with a diaphragm. Also, E is the internal combustion engine of the car.
The intake system 4 is composed of an intake manifold 5 and a carburetor 6 installed at the upstream end of the intake manifold 5.
An air cleaner Ac is attached to the α inlet.
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より取出された機関Ｅの吸入負圧は負圧通
路９及び空気エゼクタ１ｏを経て前記倍力装置Ｓの負圧
室３に導入される。The carburetor 6 has a throttle valve 7 as usual. A negative pressure take-off hole 8 is provided in the suction system 4 downstream of the throttle valve 7, and the suction negative pressure of the engine E taken out from the negative pressure take-off hole 8 is passed through the negative pressure passage 9 and the air ejector 1o to the booster. It is introduced into the negative pressure chamber 3 of the device S.
第３図に明示するように、空気エゼクタ１ｏの本体１１
は合成樹脂より形成され、その−側面に突設された連結
ボス１１ｄがブースタシェル１の上部前面に溶着される
。As clearly shown in FIG. 3, the main body 11 of the air ejector 1o
is made of synthetic resin, and a connecting boss 11d protruding from the lower side thereof is welded to the upper front surface of the booster shell 1.
前記連結ボス１．１ｄとの連結部においてブースタシェ
ル１には負圧室３に連なる吸引口１４が穿設される。A suction port 14 connected to the negative pressure chamber 3 is bored in the booster shell 1 at the connection portion with the connection boss 1.1d.
・０本部
一方、空気エゼクタ１ｏには、空気人口１２を有して本
体１１上面より突出する第１接続管１１αと、空気出口
１３を有して本体１１下面より突出する第２接続管１１
Ａと、前記吸引口１４及び空気出口１３にそれぞれ連な
る減圧室１５及び出口室１６と、との両室１５．１６間
を連通ずるディフューザ１７とが設けられる。空気人口
１２は空気通路２５及び前記エアクリーナＡｃを介して
大気に連通され、空気出口１３は負圧通路９を介して前
記負圧取出孔８に接続される。On the other hand, the air ejector 1o has a first connecting pipe 11α having an air population 12 and protruding from the upper surface of the main body 11, and a second connecting pipe 11 having an air outlet 13 and protruding from the lower surface of the main body 11.
A diffuser 17 is provided which communicates between the two chambers 15 and 16, and a decompression chamber 15 and an outlet chamber 16 which are connected to the suction port 14 and the air outlet 13, respectively. The air population 12 is communicated with the atmosphere through the air passage 25 and the air cleaner Ac, and the air outlet 13 is connected to the negative pressure outlet hole 8 through the negative pressure passage 9.
尚、図示例では、空気通路２５をエアクリーナＡＣに接
続したが、気化器６の吸気道６ａ入ロ近傍部に接続する
こともできる（第１図鎖線示参照）。In the illustrated example, the air passage 25 is connected to the air cleaner AC, but it can also be connected to the vicinity of the entrance of the intake passage 6a of the carburetor 6 (see the chain line in FIG. 1).
いずれによるもエアクリーナＡｃで浄化された外気は気
化器６には勿論、空気通路２５にも吸入される。In either case, the outside air purified by the air cleaner Ac is sucked into the air passage 25 as well as into the carburetor 6.
ディフューザ１γは減圧室１５の一端面に形成した先細
テーパ部１８と、出口室１６の一端面に形成した末広テ
ーパ部１９と、この両テーパ部１８゜１９間を接ぐのど
部２ｏとよりなっており、減圧室１５には空気人口１２
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。The diffuser 1γ consists of a tapered portion 18 formed on one end surface of the decompression chamber 15, a widening taper portion 19 formed on one end surface of the outlet chamber 16, and a throat portion 2o that connects both the tapered portions 18° and 19. There is an air population of 12 in the decompression chamber 15.
A nozzle 21 is disposed adjacent to the tapered tapered portion 18 and has a nozzle hole directed toward the throat portion 20 .
さらに本体１１には、ディフューザ１７を迂回して空気
出口１３及び吸引口１４間を接続し且つディフューザ１
７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が設けられ、また吸引
口１４に第２逆止弁２４が設けられる。Further, the main body 11 is provided with a structure that connects the air outlet 13 and the suction port 14 by bypassing the diffuser 17, and connects the air outlet 13 and the suction port 14.
A bypass 22 having a flow path resistance lower than that of 7 is provided, a first check valve 23 is provided to this bypass 22, and a second check valve 24 is provided to the suction port 14.
第１逆止弁２３ば、バイパス２２の途中の屈曲部に形成
された弁室２６に収容され、バイパス２２の吸引口１４
側を閉じるように弁ばね２７によって付勢される。上記
弁室２６の開口部は本体１１に溶着または接着された盲
栓２８によって閉鎖される。また第２逆止弁２４は、本
体１１の連結ボス１１ｄ端面に開口するように形成され
た弁室２９に収容され、吸引口１４を閉じるように弁ば
ね３０によって付勢される。上記弁室２９の開口部は、
吸引口１４を穿設されたブースタシェル１によって閉鎖
される。したがってブースタシェル１の第２逆止弁２４
に対向する部分がその弁座３１とされる。The first check valve 23 is accommodated in a valve chamber 26 formed in a bent part in the middle of the bypass 22, and is located at the suction port 14 of the bypass 22.
Biased by valve spring 27 to close the sides. The opening of the valve chamber 26 is closed by a blind plug 28 welded or glued to the main body 11. Further, the second check valve 24 is housed in a valve chamber 29 formed to open at the end surface of the connecting boss 11d of the main body 11, and is biased by a valve spring 30 so as to close the suction port 14. The opening of the valve chamber 29 is
It is closed by the booster shell 1 in which the suction port 14 is formed. Therefore, the second check valve 24 of the booster shell 1
The portion facing the valve is the valve seat 31.
このようにして第１及び第２逆止弁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、また上方より順に空気人口１
２、第２逆止弁２４、第１逆止弁２３及び空気出口１３
が配置される。In this way, the first and second check valves 23 and 24 are both configured to prevent negative pressure from flowing backward from the negative pressure chamber 3 side to the negative pressure outlet hole 8 side, and in order from above, the population 1
2. Second check valve 24, first check valve 23 and air outlet 13
is placed.
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が始動され、それに伴い絞弁７より下
流の吸入系４に負圧が発生すれば、この吸入負圧は負圧
取出孔８より取出され負圧通路９を経て出口室１６とバ
イパス２２とに作用する。Now, when the internal combustion engine E is started 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 passes through the negative pressure passage 9 to the outlet chamber 16. and the bypass 22.
そして、バイパス２２に作用する負圧は第１逆止弁２３
を開いて進み、次いで第２逆止弁２４を開き、吸引口１
４を経て倍力装置Ｓの負圧室３に到達し、ここに蓄えら
れる。Then, the negative pressure acting on the bypass 22 is applied to the first check valve 23.
Then, open the second check valve 24 and open the suction port 1.
4, it reaches the negative pressure chamber 3 of the booster S, and is stored there.
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、エアクリーナＡｃで浄化された外気を
空気人口１２より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、これに伴い減圧室１
５は減圧されるので、吸引口１４より空気を吸引して負
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２２に短絡す
ることなく負圧室３に確実に導入される。On the other hand, the negative pressure acting on the outlet chamber 16 acts on the outlet of the nozzle 21 via the diffuser 17, and with the suction force of this negative pressure, the nozzle 21 sucks the outside air purified by the air cleaner Ac from the air port 12 and sends it to the diffuser. 17 to generate a high-speed jet of air, which causes the decompression chamber 1 to
Since the pressure in the chamber 5 is reduced, air is sucked through the suction port 14 to increase the negative pressure in the negative pressure chamber 3. Then, when the suction negative pressure in the decompression 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 decompression chamber 15 is reliably supplied to the negative pressure chamber 3 without being short-circuited to the bypass 22. will be introduced in
かくして負圧室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。Thus, the negative pressure chamber 3 stores a total negative pressure of the negative suction pressure of the engine E and the negative suction pressure of the air ejector 10.
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.
機関Ｅの吹返し現象により、吸入系４を流れる燃料が負
圧通路９に侵入しても、エゼクタ１０においては上方よ
り順に空気人口１２、第２逆止弁２４、第１逆止弁２３
及び空気出口１３が配置されているので、上記燃料が自
然流下により吸引口１４に到達することはなく、また万
一燃料がディフューザ１７または第１逆止弁２３を通過
しても第２逆止弁２４で一阻止され、そして機関Ｅの吸
入負圧による第１逆止弁２３の開弁時に下向きの気流に
伴われて吸入系４へ吸入される。Even if the fuel flowing through the suction system 4 enters the negative pressure passage 9 due to the blowback phenomenon of the engine E, the ejector 10 is filled with air in the air 12, the second check valve 24, and the first check valve 23 in this order from above.
Since the air outlet 13 and air outlet 13 are arranged, the fuel will not reach the suction port 14 due to natural flow, and even if the fuel passes through the diffuser 17 or the first check valve 23, the second check valve 23 will be closed. The air is blocked by the valve 24, and when the first check valve 23 is opened due to the negative suction pressure of the engine E, the air is sucked into the suction system 4 along with the downward airflow.
第４図は本発明の第２実施例を示すもので、エゼクタ１
００本体１１に前実施例の連結ボス１１ｄ。FIG. 4 shows a second embodiment of the present invention, in which the ejector 1
The connection boss 11d of the previous embodiment is attached to the 00 main body 11.
に代えて連結フランジ１１Ｃを一体に形成し、この連結
フランジ１１ｅをシールリング３２を介してブースタシ
ェル１の前面に重合して、ビス３３を以て結着したもの
である。その他の構成は前実施例と同様であり、第４図
中、前実施例と対応する部分にはそれと同一の符号を付
した。Instead, a connecting flange 11C is integrally formed, and this connecting flange 11e is superimposed on the front surface of the booster shell 1 via a seal ring 32 and fixed with screws 33. The rest of the structure is the same as that of the previous embodiment, and in FIG. 4, parts corresponding to those of the previous embodiment are given the same reference numerals.
以上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、空気入口が大気と連通
ずる空気エゼクタの空気出口を連通し、この空気エゼク
タの減圧室に連なる吸引口に負圧式倍力装置の負圧室を
連通し、前記空気エゼクタのディフューザを迂回して前
記空気入口及び吸引口間を連通ずるバイパスに第１逆止
弁を、また前記吸引口に第２逆止弁をそれぞれ設けたの
で、機関の吸入負圧により空気エゼクタを作動させて減
圧室に発生する、機関の吸入負圧よりも高い吸入負圧を
倍力装置の負圧室に与えることができ、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。しかも、空気エゼクタの駆動のために特
別な流体ポンプを設ける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。また機関の始動後、倍力装置
の負圧室の負圧がイ幾関の吸入負圧の大きさに達するま
では主として流路抵抗の小さい前記バイパスを通して機
関の吸気負圧を倍力装置の負圧室に速やかに供給し、そ
の負圧室の負圧の上昇を早急に行うことができ、倍力装
置の作動可能状態を早期に確立することができ、そして
空気エゼクタの吸引負圧が機関の吸入負圧より高くなっ
たときには第１逆止弁の閉鎖によって空気エゼクタの吸
引負圧のバイパスへの短絡を防止して、これを倍力装置
の負圧室に確実に供給することができ、さらに機関の吸
入負圧が低下若しくは消去したときには第２逆止弁の閉
鎖によって前記負圧室から負圧通路への負圧の逆流を阻
止して、負圧室の負圧の低下を防止することができる。As described above, according to the present invention, the air outlet of the air ejector whose air inlet communicates with the atmosphere is communicated with the negative pressure outlet provided in the intake system downstream of the throttle valve of the internal combustion engine, and the air ejector is depressurized. A negative pressure chamber of a negative pressure booster is connected to a suction port connected to the chamber, a first check valve is connected to a bypass that communicates between the air inlet and the suction port by bypassing the diffuser of the air ejector, and a first check valve is connected to the suction port. Since a second check valve is installed at each port, the air ejector is activated by the engine's suction negative pressure, and the suction negative pressure higher than the engine's suction negative pressure generated in the vacuum chamber is transferred to the negative pressure chamber of the booster. The desired boost ratio can be obtained without particularly expanding the pressure receiving area of the pressure receiving part of the booster. Furthermore, 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. In addition, after the engine starts, until the negative pressure in the negative pressure chamber of the booster reaches the level of the intake negative pressure of the booster, the intake negative pressure of the engine is mainly transferred to the booster through the bypass, which has a small flow resistance. It is possible to quickly supply the air to the negative pressure chamber, increase the negative pressure in the negative pressure chamber, quickly establish the operational state of the booster, and reduce the suction negative pressure of the air ejector. When the suction negative pressure of the engine becomes higher than the suction negative pressure of the engine, the first check valve is closed to prevent the suction negative pressure of the air ejector from shorting to the bypass, and to ensure that this is supplied to the negative pressure chamber of the booster. Furthermore, when the suction negative pressure of the engine decreases or disappears, the second check valve is closed to prevent the negative pressure from flowing back from the negative pressure chamber to the negative pressure passage, thereby preventing the negative pressure in the negative pressure chamber from decreasing. It can be prevented.
さらにまた、前記空気入口、第２逆止弁、第１逆上弁及
び空気出口をこめ順序で上方より配置したので、機関の
吹返し現象により吸入系の燃料がディフューザまたは第
１逆止弁を通過することがあっても、その燃料は第１逆
止弁の開弁時の下向き気流によって空気出口側へ直ちに
排出され、倍力装置への侵入を確実に防止される。Furthermore, since the air inlet, second check valve, first check valve, and air outlet are arranged from above in this order, the fuel in the intake system flows into the diffuser or the first check valve due to the blowback phenomenon of the engine. Even if fuel does pass through, it is immediately discharged to the air outlet side by the downward airflow when the first check valve is opened, and is reliably prevented from entering the booster.
第１図は本発明装置の第１実施例を示す概略側面■、第
２図はその要部である倍力装置及び空気エゼクタの拡大
された一部縦断側面図、第３図は空気エゼクタの更に拡
大された縦断側面図、第４図は本発明装置の第２実施例
を示す、第２図と同様の側面図である。
Ｅ・・・内燃機関、Ｓ・・・負圧式倍力装置３・・・負
圧室、４・・・吸入系、７・・・絞弁、８・・・負圧取
出孔、９・・・負圧通路、１０・・・空気エゼクタ、１
１・・・本体、１２・・・空気入口、１３・・・空気出
口、１４・・・吸引口、１５・・・減圧室、１６・・・
出口室、１７・・・ディフューザ、２２・・・バイパス
、２３・・・第１逆止弁、２４・・・第２逆止弁
特許出願人 日信工業株式会社
同 本田技研工業株式会社
第３図
々″−９
第４図
手続補正書、ヵえ、
特許庁長官殿
１、事件の表示
昭和５８年 特 願第１３８４４６号
２、発明の名称
車両用負圧式倍力装置の負圧源装置
３、補正をする者
事件との関係 特許出願人
名称 日信工業株式会社（外１名）
４、代 理 人 〒１０５
電話東京４３４−４１５１
５、補正命令の日付Fig. 1 is a schematic side view showing the first embodiment of the device of the present invention, Fig. 2 is an enlarged partial longitudinal side view of the main parts of the booster and air ejector, and Fig. 3 is an enlarged partial longitudinal side view of the air ejector. A further enlarged vertical sectional side view, FIG. 4, is a side view similar to FIG. 2, showing a second embodiment of the device of the present invention. E... Internal combustion engine, S... Negative pressure booster 3... Negative pressure chamber, 4... Suction system, 7... Throttle valve, 8... Negative pressure outlet, 9...・Negative pressure passage, 10...Air ejector, 1
DESCRIPTION OF SYMBOLS 1... Main body, 12... Air inlet, 13... Air outlet, 14... Suction port, 15... Decompression chamber, 16...
Outlet chamber, 17... Diffuser, 22... Bypass, 23... First check valve, 24... Second check valve Patent applicant Nissin Kogyo Co., Ltd. Honda Motor Co., Ltd. No. 3 Figures''-9 Figure 4 Procedural Amendment, Kae, Mr. Commissioner of the Japan Patent Office 1, Indication of the case, 1982, Japanese Patent Application No. 138446, 2, Name of the invention, Negative pressure source device for negative pressure booster for vehicles 3 , Relationship with the case of the person making the amendment Patent applicant name: Nissin Kogyo Co., Ltd. (one other person) 4. Agent: 434-4151 Tokyo 105 5. Date of amendment order
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
連通し、この空気エゼクタの減圧室に連なる吸引口に負
圧式倍力装置の負圧室を連通し、前記空気エゼクタのデ
ィフューザを迂回して前記空気入口及び吸引口間を連通
ずるバイパスに第１逆止弁を、また前記吸引口に第２逆
止弁をそれぞれ設け、前記空気入口、第２逆止弁、ｉｔ
逆止弁及び空気出口をこの順序で上方より配置してなる
、車両用負圧式倍力装置の負圧源装置。The air outlet of the air ejector, whose air inlet communicates with the atmosphere, is connected to a negative pressure outlet provided in the intake system downstream of the throttle valve of the internal combustion engine, and a negative pressure booster is connected to the suction port of the air ejector that connects to the decompression chamber. A first check valve is provided in a bypass that communicates with the negative pressure chamber of the device and communicates between the air inlet and the suction port by bypassing the diffuser of the air ejector, and a second check valve is provided in the suction port. , the air inlet, the second check valve, it
A negative pressure source device for a negative pressure booster for a vehicle, in which a check valve and an air outlet are arranged in this order from above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13844683A JPS6029367A (en) | 1983-07-28 | 1983-07-28 | Negative-pressure source device of negative-pressure type booster for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13844683A JPS6029367A (en) | 1983-07-28 | 1983-07-28 | Negative-pressure source device of negative-pressure type booster for car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6029367A true JPS6029367A (en) | 1985-02-14 |
| JPS6339471B2 JPS6339471B2 (en) | 1988-08-05 |
Family
ID=15222188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13844683A Granted JPS6029367A (en) | 1983-07-28 | 1983-07-28 | Negative-pressure source device of negative-pressure type booster for car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6029367A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006036188A (en) * | 2004-07-23 | 2006-02-09 | Ford Global Technologies Llc | Negative pressure enhancing type check valve |
-
1983
- 1983-07-28 JP JP13844683A patent/JPS6029367A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006036188A (en) * | 2004-07-23 | 2006-02-09 | Ford Global Technologies Llc | Negative pressure enhancing type check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6339471B2 (en) | 1988-08-05 |
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