JPS6212832Y2 - - Google Patents
Info
- Publication number
- JPS6212832Y2 JPS6212832Y2 JP1480082U JP1480082U JPS6212832Y2 JP S6212832 Y2 JPS6212832 Y2 JP S6212832Y2 JP 1480082 U JP1480082 U JP 1480082U JP 1480082 U JP1480082 U JP 1480082U JP S6212832 Y2 JPS6212832 Y2 JP S6212832Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- chamber
- atmospheric pressure
- valve
- actuator
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 9
- 239000002699 waste material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
Landscapes
- Supercharger (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、過給機付内燃機関の過給圧制御装置
に関し、特に排気系の過給機タービンに対するバ
イパス通路中のウエイストゲート弁を、吸気系の
過給圧を用いてダイヤフラム式アクチユエータを
動作することにより開閉させて過給圧制御する方
式における高度補正に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a boost pressure control device for a supercharged internal combustion engine, and in particular, to a wastegate valve in a bypass passage for a supercharger turbine in an exhaust system. This invention relates to altitude correction in a system in which supercharging pressure is controlled by opening and closing a diaphragm actuator by operating a diaphragm actuator using supercharging pressure in the intake system.
〔従来の技術〕
従来、例えば実開昭56−118919号公報の先行技
術に示されるように、排気系の過給機のタービン
に対してバイパス通路を設けると共に、このバイ
パス通路中に過給圧によるダイヤフラム式アクチ
ユエータの動作で開閉するウエイストゲート弁を
設け、過給圧が所定の高圧に達すると、アクチユ
エータによりウエイストゲート弁を開いて排気の
一部をバイパス通路に逃がすことにより、過給機
の回転と共に過給圧の上昇を押えるものがある。[Prior Art] Conventionally, as shown in the prior art of Japanese Utility Model Application Publication No. 56-118919, a bypass passage is provided for the turbine of the turbocharger in the exhaust system, and the supercharging pressure is maintained in the bypass passage. A wastegate valve is installed that opens and closes with the operation of a diaphragm actuator, and when the boost pressure reaches a predetermined high pressure, the actuator opens the wastegate valve and releases a portion of the exhaust gas to the bypass passage, thereby reducing the pressure of the turbocharger. There is something that suppresses the increase in supercharging pressure as the engine rotates.
ところで、ダイヤフラム式アクチユエータはダ
イヤフラムで区画された一方の制御室に対して、
その他方の室が大気に開放され、そこでダイヤフ
ラムにスプリングを付勢した構造であり、過給圧
に対し大気圧とスプリング力を加算したものとの
関係で動作するようになつている。従つてこれは
通常の低地走行のように基準側の大気圧が一定な
標準大気圧の場合にのみ通用し、高地において大
気圧が低下すると必然的に過給圧も低く押えられ
てしまい、所期のエンジン出力を得られない。
By the way, the diaphragm actuator has one control room partitioned by a diaphragm.
The other chamber is open to the atmosphere, and has a structure in which a diaphragm is biased by a spring, so that it operates in relation to the supercharging pressure plus the atmospheric pressure and the spring force. Therefore, this is only applicable when the atmospheric pressure on the reference side is constant, such as standard atmospheric pressure, such as when driving at low altitudes.If the atmospheric pressure decreases at high altitudes, the boost pressure will inevitably be held low, and the Unable to obtain the desired engine output.
一方、かかる高地における過給圧制御対策とし
て、従来例えば特開昭53−56413号公報の先行技
術がある。これは本考案の対象とする過給圧を用
いたダイヤフラム式アクチユエータによる方式と
異なり、圧力センサで大気状態を検出してバイパ
ス通路のバイパス弁の開度を電気的に連続制御
し、大気状態に対し一定の過給圧を得るものであ
る。ところで、上記公報では圧力センサの具体的
構成が明示されていないが、単に各高度での大気
圧を検出するものでは制御装置において標準大気
圧との比較によるバルブ動作に改めねばならな
い。また、圧力を電気信号に変換する必要があ
り、ダイヤフラム式アクチユエータによるウエイ
ストゲート弁の開閉動作機構を用いることができ
ず全く異つた動作機構になる。 On the other hand, as a countermeasure for supercharging pressure control at such high altitudes, there is a conventional technique disclosed in, for example, Japanese Unexamined Patent Publication No. 53-56413. This differs from the method using a diaphragm actuator that uses supercharging pressure, which is the subject of this invention, and uses a pressure sensor to detect the atmospheric condition and continuously control the opening degree of the bypass valve in the bypass passage. On the other hand, a constant boost pressure is obtained. By the way, although the specific structure of the pressure sensor is not specified in the above-mentioned publication, if it simply detects the atmospheric pressure at each altitude, the control device must change the valve operation by comparing it with the standard atmospheric pressure. In addition, it is necessary to convert pressure into an electrical signal, and the opening/closing mechanism of the waste gate valve using a diaphragm actuator cannot be used, resulting in a completely different mechanism.
本考案はこのような事情に鑑みなされたもの
で、ダイヤフラム式アクチユエータによるウエイ
ストゲート弁の動作方式において、アクチユエー
タの一方の大気に開放する基準側の高度に対する
大気圧低下に対応し、その他方の過給圧が供給さ
れる制御側を同様に圧力低下させて比較レベルを
常に等しくすれば、高度による大気圧低下に関係
なく一定の過給圧を得ることができるという点に
着目し、この場合のアクチユエータの他方の圧力
調整を単一の圧力モジユレータにより行うように
した過給機付内燃機関の過給圧制御装置を提供す
ることを目的とする。
The present invention was developed in view of these circumstances, and in the operation method of the waste gate valve using a diaphragm actuator, it is possible to cope with the atmospheric pressure drop with respect to the reference altitude on one side of the actuator that is open to the atmosphere, and to reduce the atmospheric pressure on the other side. Focusing on the fact that if the control side to which the boost pressure is supplied is similarly reduced in pressure and the comparison level is always the same, a constant boost pressure can be obtained regardless of the drop in atmospheric pressure due to altitude, and in this case, It is an object of the present invention to provide a supercharging pressure control device for a supercharged internal combustion engine in which the pressure of the other actuator is adjusted by a single pressure modulator.
以下、図面を参照して本考案の実施例につき具
体的に説明する。まず第１図において本考案の概
要について説明すると、符号１は機関本体、２は
吸気管、３は排気管であり、過給機４がコンプレ
ツサ４ａを吸気管２に設け、タービン４ｂを排気
管３に設けて、排気により過給作用するように配
置してある。排気管３においてはタービン４ｂに
対しバイパス通路５が連通構成され、このバイパ
ス通路５に開閉用のウエイストゲート弁６が設け
られる。また、ウエイストゲート弁６を動作する
ためダイヤフラム式アクチユエータ７を有し、こ
のアクチユエータ７は本体８の内部をダイヤフラ
ム９で区画することにより制御室１０と大気開放
の室１１が形成され、ダイヤフラム９がリンク１
２を介してウエイストゲート弁６にダイヤフラム
９の撓みにより開閉すべく結合される。そして、
かかるアクチユエータ７の制御室１０が通路１３
を経て吸気管２のコンプレツサ４ａ下流側に連通
され、大気開放の室１１内でダイヤフラム９に対
してスプリング１４が付勢してある。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, the outline of the present invention will be explained with reference to FIG. 1. Reference numeral 1 is the engine body, 2 is the intake pipe, and 3 is the exhaust pipe. 3, and is arranged so that the exhaust acts as a supercharging effect. In the exhaust pipe 3, a bypass passage 5 is configured to communicate with the turbine 4b, and this bypass passage 5 is provided with a waste gate valve 6 for opening and closing. The actuator 7 also has a diaphragm actuator 7 for operating the wastegate valve 6. The actuator 7 has a main body 8 and a diaphragm 9 that partitions the inside of the main body 8 into a control chamber 10 and a chamber 11 open to the atmosphere. Link 1
2 to the wastegate valve 6 so as to be opened and closed by the flexure of the diaphragm 9. and,
The control chamber 10 of the actuator 7 is a passage 13.
A spring 14 is urged against the diaphragm 9 in a chamber 11 that is open to the atmosphere and communicates with the intake pipe 2 downstream of the compressor 4a.
このような構成において、本考案によると吸気
管２とアクチユエータ７の制御室１０を結ぶ通路
１３の途中に、高地において大気圧が低下すると
アクチユエータ７の制御室１０に供給される過給
圧を調整するための圧力モジユレータ１５が挿入
されている。 In such a configuration, according to the present invention, a passage 13 connecting the intake pipe 2 and the control chamber 10 of the actuator 7 is provided in the middle of the passage 13 to adjust the supercharging pressure supplied to the control chamber 10 of the actuator 7 when atmospheric pressure decreases at high altitudes. A pressure modulator 15 is inserted for this purpose.
圧力モジユレータ１５は第２図に詳記されるよ
うに、本体１６内にダイヤフラム１７により区画
された圧力調整室１８と過給圧室１９が形成さ
れ、過給圧室１９の圧力調整室１８と反対の側に
標準大気圧Poを封入する標準大気圧室２０が設
けられ、この標準大気圧室２０に対しダイヤフラ
ム２１を介して大気に開口する大気圧室２２が形
成され、こうして４つの室１８，１９，２０，２
２がこの順で下から上に重合してある。そして、
圧力調整室１８と過給圧室１９が共に通路１３ａ
により吸気管２に連通し、圧力調整室１８の入口
には所定の口径の絞り２３が設けられて室１８と
１９の間に差圧を生じるようになつており、更に
この圧力調整室１８は通路１３ｂによりアクチユ
エータ制御室１０に連通している。 As detailed in FIG. 2, the pressure modulator 15 has a pressure adjustment chamber 18 and a boost pressure chamber 19 partitioned by a diaphragm 17 in a main body 16, and the pressure adjustment chamber 18 of the boost pressure chamber 19 and A standard atmospheric pressure chamber 20 that encloses the standard atmospheric pressure Po is provided on the opposite side, and an atmospheric pressure chamber 22 that opens to the atmosphere via a diaphragm 21 is formed with respect to this standard atmospheric pressure chamber 20. In this way, the four chambers 18 ,19,20,2
2 are polymerized in this order from bottom to top. and,
Both the pressure adjustment chamber 18 and the boost pressure chamber 19 are in the passage 13a.
A throttle 23 of a predetermined diameter is provided at the inlet of the pressure adjustment chamber 18, which communicates with the intake pipe 2, and creates a pressure difference between the chambers 18 and 19. It communicates with the actuator control chamber 10 through a passage 13b.
また、圧力調整室１８には開閉弁２４が設けら
れており、この開閉弁２４は室１９と２０の間の
仕切り２５を気密に貫通しして両ダイヤフラム１
７と２１に連結する弁棒２６を有し、この弁棒２
６の先端の弁体２７が圧力調整室１８を形成する
本体１６側で大気に開口する弁座２８と係合して
開閉するように構成されている。これにより、開
閉弁２４は弁棒２６と共に弁体２７がいずれかの
ダイヤフラム１７，２１の撓みによつて移動して
開閉動作するようになり、室２２の大気圧が室２
０の標準大気圧より低下したり、または室１９の
過給圧が下ると、開閉弁２４が開いて圧力調整室
１８の圧力がその一部を大気に排出することで低
くなる。また逆に、大気圧が高くなつたり、また
は圧力調整室１８の圧力が下ると、開閉弁２４が
閉じて圧力調整室１８の圧力上昇を図る。 Further, the pressure adjustment chamber 18 is provided with an on-off valve 24, which passes through a partition 25 between the chambers 19 and 20 in an airtight manner so that both diaphragms 1
7 and 21, this valve stem 2
The valve body 27 at the tip of the valve 6 engages with a valve seat 28 that opens to the atmosphere on the main body 16 side forming the pressure adjustment chamber 18 to open and close. As a result, the on-off valve 24 is opened and closed by moving the valve body 27 together with the valve stem 26 by the deflection of either diaphragm 17, 21, and the atmospheric pressure in the chamber 22 is reduced.
When the pressure drops below the standard atmospheric pressure of 0, or when the supercharging pressure in the chamber 19 drops, the on-off valve 24 opens and the pressure in the pressure adjustment chamber 18 is lowered by discharging a portion of it to the atmosphere. Conversely, when the atmospheric pressure increases or the pressure in the pressure adjustment chamber 18 decreases, the on-off valve 24 closes to increase the pressure in the pressure adjustment chamber 18.
即ち、圧力調整室１８の調整圧力をPw、過給
圧室１９の過給圧をPs、標準大気圧室２０の標
準大気圧をPo、大気圧室２２の高度により変化
する大気圧をPaとすると、開閉弁２４の開き側
の力（Po−Pa）と、閉じ側の力（Ps−Pw）のバ
ランスにより、以下の関係となる。 That is, the adjusted pressure in the pressure adjustment chamber 18 is Pw, the boost pressure in the boost pressure chamber 19 is Ps, the standard atmospheric pressure in the standard atmospheric pressure chamber 20 is Po, and the atmospheric pressure that changes depending on the altitude in the atmospheric pressure chamber 22 is Pa. Then, due to the balance between the force on the opening side (Po-Pa) and the force on the closing side (Ps-Pw) of the on-off valve 24, the following relationship is obtained.
Po−Pa＝Ps−Pw
Pw＝Ps−（Po−Pa）
以上を第３図により説明する。いま、高度Ｈに
おける大気圧をPaとすると、大気圧は高度が増
すに従つてグラフＡのように低下する。一方、圧
力調整室１８からアクチユエータ制御室１０に供
給される圧力Pwも、それと同じ（Po−Pa）だけ
圧力低下して、同図のグラフＢのように調整され
る。 Po−Pa=Ps−Pw Pw=Ps−(Po−Pa) The above will be explained with reference to FIG. Now, assuming that the atmospheric pressure at altitude H is Pa, the atmospheric pressure decreases as shown in graph A as the altitude increases. On the other hand, the pressure Pw supplied from the pressure adjustment chamber 18 to the actuator control chamber 10 also decreases by the same amount (Po-Pa) and is adjusted as shown in graph B of the figure.
このように構成されることで、高度零の低地走
行では圧力モジユレータ１５において大気圧室２
２の大気圧が標準大気圧と等しいか、それより大
きいためダイヤフラム２１の撓みにより開閉弁２
４が閉じる。そこで、圧力調整室１８の過給圧は
圧力調整されることなく、そのままアクチユエー
タ７の制御室１０に供給されることになる。一
方、アクチユエータ７は制御室１０の圧力に対し
室１１の大気圧とスプリング１４の力を加算した
ものとの比較で動作するようになつており、高度
零の低地では室１１の大気圧が圧力モジユレータ
１５の大気圧室２２と同様に略標準大気圧になつ
て考慮する必要がない。従つて、機関回転数の上
昇に伴い過給圧が所定の高圧に達すると、アクチ
ユエータ７のダイヤフラム９がスプリング１４の
力に打ち勝つて撓み、これによりウエイストゲー
ト弁６が開いて排気の一部がバイパス通路５を流
れ、こうして過給機４の動作と共に過給圧はそれ
以上上昇しないように調整される。 With this configuration, when traveling on low ground at zero altitude, the pressure modulator 15
Since the atmospheric pressure of the valve 2 is equal to or greater than the standard atmospheric pressure, the opening/closing valve 2
4 closes. Therefore, the supercharging pressure in the pressure adjustment chamber 18 is supplied to the control chamber 10 of the actuator 7 as it is without being pressure adjusted. On the other hand, the actuator 7 operates by comparing the pressure in the control room 10 with the sum of the atmospheric pressure in the chamber 11 and the force of the spring 14. Similar to the atmospheric pressure chamber 22 of the modulator 15, the atmospheric pressure is approximately standard atmospheric pressure, so there is no need to consider it. Therefore, when the supercharging pressure reaches a predetermined high pressure as the engine speed increases, the diaphragm 9 of the actuator 7 overcomes the force of the spring 14 and bends, which opens the waste gate valve 6 and drains a portion of the exhaust gas. It flows through the bypass passage 5, and as the supercharger 4 operates, the supercharging pressure is adjusted so as not to increase any further.
次いで、高地での走行において大気圧が第３図
のグラフＡのように低下すると、標準大気圧との
差圧によるダイヤフラム２１の撓みで開閉弁２４
を開いて圧力調整室１８の圧力が下る。すると、
この圧力調整室１８と過給圧室１９との間にも差
圧を生じることで、開閉弁２４を逆に閉じて圧力
調整室１８の圧力が上がるようになり、これらの
両作用が交互に繰り返される。圧力調整室１８の
圧力Pwは結局標準大気圧に対し高度Ｈにより低
下した大気圧との差圧分（Po−Pa）だけ低い第
３図のグラフＢのような値に圧力調整される。従
つて、アクチユエータ７では室１１の大気圧の低
下に応じ、制御室１０の圧力も同じだけ低下した
ものになつて高度Ｈ以上の高度においても比較レ
ベルが上述と同一になり、これにより過給圧はス
プリング力に打ち勝つまで上昇することができ、
そのスプリング力より大きくなつた時点でウエイ
ストゲート弁６の開動作による過給圧制御が行わ
れるのであり、この結果過給圧は第３図のグラフ
Ｃのように低地の場合と等しい一定のものにな
る。 Next, when the atmospheric pressure decreases as shown in graph A in FIG. 3 while driving at high altitudes, the diaphragm 21 is deflected due to the pressure difference between the standard atmospheric pressure and the on-off valve 24.
is opened to reduce the pressure in the pressure adjustment chamber 18. Then,
By creating a pressure difference between the pressure adjustment chamber 18 and the supercharging pressure chamber 19, the on-off valve 24 is reversely closed and the pressure in the pressure adjustment chamber 18 increases, and these two effects alternate. Repeated. The pressure Pw in the pressure adjustment chamber 18 is eventually adjusted to a value as shown in graph B in FIG. 3, which is lower by the pressure difference (Po-Pa) between the standard atmospheric pressure and the atmospheric pressure lowered due to the altitude H. Therefore, in the actuator 7, as the atmospheric pressure in the chamber 11 decreases, the pressure in the control chamber 10 also decreases by the same amount, and even at altitudes higher than altitude H, the comparison level becomes the same as above, and this results in supercharging. The pressure can rise until it overcomes the spring force,
When the spring force becomes greater than the spring force, the supercharging pressure is controlled by opening the waste gate valve 6, and as a result, the supercharging pressure remains constant, as shown in graph C in Figure 3, which is the same as in the case of lowland areas. become.
また、過給圧が上述の上限の値から下ると、室
１８と１９の差圧によるダイヤフラム１７の撓み
で開閉弁２４が開いて、圧力調整室１８と共にア
クチユエータ制御室１０の圧力が直ちに低下しウ
エイストゲート弁６を閉じるようになり、この場
合でも絞り２３により過給圧室１９に対し圧力調
整室１８の圧力が等しいか、それより低い関係に
保持される。 Furthermore, when the boost pressure falls below the above-mentioned upper limit value, the opening/closing valve 24 opens due to the deflection of the diaphragm 17 due to the pressure difference between the chambers 18 and 19, and the pressure in the actuator control chamber 10 as well as the pressure adjustment chamber 18 immediately decreases. The waste gate valve 6 is now closed, and even in this case, the pressure in the pressure adjustment chamber 18 is maintained equal to or lower than that in the boost pressure chamber 19 by the throttle 23.
以上の説明から明らかなように本考案による
と、過給圧を用いたダイヤフラム式アクチユエー
タ７によるウエイストゲート弁６の動作方式にお
いて、アクチユエータ７に供給される過給圧が圧
力モジユレータ１５により標準大気圧と高度によ
り低下する大気圧との関係で調整され、アクチユ
エータ７での比較レベルが常に同じにされるの
で、一定の過給圧が確実に得られる。従来と同一
の圧力方式をそのまま用いることができ、且つ単
一の圧力モジユレータ１５で圧力調整するだけで
あるので、構造的に簡単で実用的価値が高い。圧
力モジユレータ１５は過給圧の一部が供給されて
いる圧力調整室１８が一番下で、その上に過給圧
室１９、標準大気圧室２０、大気圧室２２が順次
重合され、これらの各室の差圧で圧力調整室１８
の開閉弁２４を開閉して圧力調整するので、各部
の構成が各機構毎に明確に区分されている。ま
た、大気圧側及び調整側がいずれもダイヤフラム
１７，２１で差圧を検出して開閉弁２４を動作す
るので、動作が迅速且つ確実である。
As is clear from the above description, according to the present invention, in the operation method of the waste gate valve 6 by the diaphragm actuator 7 using supercharging pressure, the supercharging pressure supplied to the actuator 7 is adjusted to standard atmospheric pressure by the pressure modulator 15. Since the comparison level at the actuator 7 is always the same, a constant boost pressure can be reliably obtained. The same pressure system as the conventional one can be used as is, and the pressure can only be adjusted by a single pressure modulator 15, so it is structurally simple and has high practical value. In the pressure modulator 15, a pressure adjustment chamber 18 to which a part of the boost pressure is supplied is located at the bottom, and a boost pressure chamber 19, a standard atmospheric pressure chamber 20, and an atmospheric pressure chamber 22 are superposed in order above it. The pressure adjustment chamber 18 is adjusted by the differential pressure of each chamber.
Since the pressure is adjusted by opening and closing the on-off valve 24, the configuration of each part is clearly divided into each mechanism. In addition, since both the atmospheric pressure side and the adjustment side detect the differential pressure using the diaphragms 17 and 21 and operate the on-off valve 24, the operation is quick and reliable.
第１図は本考案による装置の一実施例の全体の
概略を示す構成図、第２図は圧力モジユレータの
断面図、第３図は高度に対する大気圧、圧力調
整、過給圧の特性を示す図である。
２……吸気管、３……排気管、４……過給機、
５……バイパス通路、６……ウエイストゲート
弁、７……アクチユエータ、９……ダイヤフラ
ム、１０……制御室、１１……大気開放の室、１
３……通路、１４……スプリング、１５……圧力
モジユレータ、１７……ダイヤフラム、１８……
圧力調整室、１９……過給圧室、２０……標準大
気圧室、２１……ダイヤフラム、２２……大気圧
室、２４……開閉弁。
Fig. 1 is a block diagram showing the overall outline of an embodiment of the device according to the present invention, Fig. 2 is a sectional view of the pressure modulator, and Fig. 3 shows the characteristics of atmospheric pressure, pressure adjustment, and boost pressure with respect to altitude. It is a diagram. 2...Intake pipe, 3...Exhaust pipe, 4...Supercharger,
5... Bypass passage, 6... Waste gate valve, 7... Actuator, 9... Diaphragm, 10... Control room, 11... Atmosphere open chamber, 1
3... Passage, 14... Spring, 15... Pressure modulator, 17... Diaphragm, 18...
Pressure adjustment chamber, 19... Boost pressure chamber, 20... Standard atmospheric pressure chamber, 21... Diaphragm, 22... Atmospheric pressure chamber, 24... Open/close valve.
Claims (1)
中にウエイストゲート弁を設け、該ウエイストゲ
ート弁のアクチユエータがダイヤフラムの一方に
吸気系の過給圧通路により過給圧が供給される制
御室を有し、その他方に大気開放する室を有し
て、そこで上記ダイヤフラムにスプリングを付勢
する過給機付内燃機関において、上記過給圧通路
の途中に圧力モジユレータを設け、該圧力モジユ
レータは吸気系からの過給圧が絞りを経て供給さ
れ、圧力調整した圧力を上記アクチユエータ制御
室に供給する圧力調整室、吸気系からの過給圧が
供給される過給圧室、標準大気圧室および大気圧
室を順次重合し、上記圧力調整室と過給圧室との
間、及び上記標準大気圧室と大気圧室との間にそ
れぞれダイヤフラムを設けて仕切り、更に上記圧
力調整室に上記両ダイヤフラムの変位により開閉
して該圧力調整室を大気に開放可能にする開閉弁
を設けて構成されることを特徴とする過給機付内
燃機関の過給圧制御装置。 A wastegate valve is provided in a bypass passage to a supercharger turbine of the exhaust system, and an actuator of the wastegate valve has a control chamber on one side of the diaphragm to which boost pressure is supplied from a boost pressure passage of the intake system, In a supercharged internal combustion engine that has a chamber that is open to the atmosphere on the other side, and in which a spring is applied to the diaphragm, a pressure modulator is provided in the middle of the boost pressure passage, and the pressure modulator is connected to the air from the intake system. A pressure adjustment chamber to which boost pressure is supplied via a throttle and the adjusted pressure to the actuator control chamber, a boost pressure chamber to which boost pressure from the intake system is supplied, a standard atmospheric pressure chamber, and an atmospheric pressure chamber. are successively polymerized, diaphragms are provided between the pressure adjustment chamber and the supercharging pressure chamber, and between the standard atmospheric pressure chamber and the atmospheric pressure chamber, respectively, and the displacement of both diaphragms is added to the pressure adjustment chamber. 1. A supercharging pressure control device for a supercharged internal combustion engine, comprising an on-off valve that opens and closes the pressure regulating chamber to the atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1480082U JPS58118225U (en) | 1982-02-04 | 1982-02-04 | Boost pressure control device for internal combustion engine with supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1480082U JPS58118225U (en) | 1982-02-04 | 1982-02-04 | Boost pressure control device for internal combustion engine with supercharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58118225U JPS58118225U (en) | 1983-08-12 |
| JPS6212832Y2 true JPS6212832Y2 (en) | 1987-04-03 |
Family
ID=30027255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1480082U Granted JPS58118225U (en) | 1982-02-04 | 1982-02-04 | Boost pressure control device for internal combustion engine with supercharger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58118225U (en) |
-
1982
- 1982-02-04 JP JP1480082U patent/JPS58118225U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58118225U (en) | 1983-08-12 |
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