JPH07197819A - Reciprocating internal combustion engine - Google Patents

Reciprocating internal combustion engine

Info

Publication number
JPH07197819A
JPH07197819A JP5351788A JP35178893A JPH07197819A JP H07197819 A JPH07197819 A JP H07197819A JP 5351788 A JP5351788 A JP 5351788A JP 35178893 A JP35178893 A JP 35178893A JP H07197819 A JPH07197819 A JP H07197819A
Authority
JP
Japan
Prior art keywords
compressed air
internal combustion
combustion engine
pressure
closing
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.)
Withdrawn
Application number
JP5351788A
Other languages
Japanese (ja)
Inventor
Goro Taguchi
梧郎 田口
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.)
Mitsui Engineering and Shipbuilding Co Ltd
Original Assignee
Mitsui Engineering and Shipbuilding Co Ltd
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 Mitsui Engineering and Shipbuilding Co Ltd filed Critical Mitsui Engineering and Shipbuilding Co Ltd
Priority to JP5351788A priority Critical patent/JPH07197819A/en
Publication of JPH07197819A publication Critical patent/JPH07197819A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Landscapes

  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Abstract

PURPOSE:To realize the stable high efficiency of the internal combustion engine by detecting the pressure drop in a compressed air reservoir to be caused by the use of the compressed air, introducing the signal to an opening/closing adjustment mechanism of an air intake valve, and quickening the timing of closing in the compression stroke of the air intake valve by the opening/closing adjustment mechanism. CONSTITUTION:The compressed air is stored in a compressed air reservoir 1 by using the night power to drive a compressor. When a generator is driven by operating a reciprocating internal combustion engine 9 in the daytime, the air is fed by operating a control valve 5 mounted on a piping 6. The pressure in the compressed air reservoir 1 is detected by a pressure detector 2, and the signal V is transmitted to a control device 27 to control an opening/closing adjustment mechanism 19. When the compressed air in the compressed air reservoir 1 is comsumed by the internal combustion engine 9 and the pressure is gradually reduced, the pressure drop is detected by the pressure detector 2, the signal is introduced to the control device 27, a cam mechanism 18 of the opening/closing adjustment mechanism 19 is moved to a small diameter part to quicken the closing timing of an air intake valve 10a to make the air volume to be fed to the cylinder 12 constant.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は往復動内燃機関、より詳
しくは例えばコージェネレーション発電設備の如く出力
が1000KW以下の比較的小型の発電設備の熱機関と
して好適な往復動内燃機関に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating internal combustion engine, and more particularly to a reciprocating internal combustion engine suitable as a heat engine for a relatively small power generation facility having an output of 1000 KW or less such as a cogeneration power generation facility. .

【0002】[0002]

【従来の技術】一般に発電設備においてこれが大型の設
備であるときはガスタービン機関がコンパクトで大出力
を出せるため適しているが、例えば1000KW以下の
小型の発電設備においては往復動内燃機関が高効率で適
している。しかしながら、このようなガスタービン機関
や往復動内燃機関においては必要とする圧縮空気を自ら
のエネルギーにより圧縮機や過給機を駆動して得ている
ため有効出力は制約されることとなる。
2. Description of the Related Art Generally, in a power generation facility, when the power generation facility is a large facility, the gas turbine engine is compact and can output a large output, which is suitable. However, in a small power generation facility of 1000 KW or less, the reciprocating internal combustion engine is highly efficient. Suitable for However, in such a gas turbine engine or reciprocating internal combustion engine, the effective output is limited because the compressed air required is obtained by driving the compressor and the supercharger with its own energy.

【0003】このような技術的な問題から夜間の余剰電
力を用いて圧縮機を駆動し得られた圧縮空気を圧縮空気
貯槽に貯蔵し、この圧縮空気貯槽内の圧縮空気をガスタ
ービン機関や往復動内燃機関を供給するたとが考えら
れ、ガスタービン機関の分野においては既に実施されて
いる。
Due to such a technical problem, the compressed air obtained by driving the compressor by using the surplus power at night is stored in the compressed air storage tank, and the compressed air in the compressed air storage tank is reciprocated by the gas turbine engine or the reciprocating air. It is believed to have supplied a dynamic internal combustion engine, which has already been implemented in the field of gas turbine engines.

【0004】[0004]

【発明が解決しようとする課題】ところで前記の圧縮空
気貯槽内に貯蔵された圧縮空気を往復動内燃機関に供給
する場合問題となる。即ち、貯蔵された圧縮空気は使用
に伴ってしだいに圧力低下をきたし、そのため機関取り
入れ空気圧が変化することとなる。このことは、シリン
ダーに供給される空気の充填効率に影響し、吐出圧力が
変化することになり、機関を安全に運転することができ
ないことになる。
A problem arises when the compressed air stored in the compressed air storage tank is supplied to the reciprocating internal combustion engine. That is, the stored compressed air gradually decreases in pressure as it is used, so that the intake air pressure of the engine changes. This affects the charging efficiency of the air supplied to the cylinder, the discharge pressure changes, and the engine cannot be operated safely.

【0005】このようなことから、この貯蔵された圧縮
空気を用いた往復動機関は実用に供することができない
ものであった。しかしながら近来この種の小型発電設備
の要望も多くかつ効率の向上が斯界において望まれてい
る。
For these reasons, the reciprocating engine using the stored compressed air cannot be put to practical use. However, there has recently been a great demand for this type of small-scale power generation equipment, and improvement in efficiency has been desired in this field.

【0006】[0006]

【課題を解決するための手段】本発明は従来の小型の発
電設備等に使用される往復動内燃機関の有する不具合を
解決するためになされたものであって、圧力検知器を有
する圧縮空気貯槽と往復動内燃機関の吸気管とを燃料混
合器を有する配管で連結するとともに前記吸気管に配置
された吸気弁の開閉調整機構を設け、前記圧力検出器の
信号を前記開閉調整機構に導入し、前記圧縮空気貯槽内
の圧力低下に対応して圧縮工程における前記吸気弁の閉
鎖時期を早くするように制御する往復動内燃機関を提供
するものである。
SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of a reciprocating internal combustion engine used in a conventional small-sized power generation facility or the like, and a compressed air storage tank having a pressure detector. And an intake pipe of the reciprocating internal combustion engine are connected by a pipe having a fuel mixer, and an opening / closing adjusting mechanism of an intake valve arranged in the intake pipe is provided, and a signal of the pressure detector is introduced into the opening / closing adjusting mechanism. The present invention provides a reciprocating internal combustion engine that controls so that the closing timing of the intake valve in the compression process is advanced in response to the pressure drop in the compressed air storage tank.

【0007】[0007]

【作 用】本発明の往復動内燃機関においては、圧縮空
気の使用によって生じる圧縮空気貯槽内の圧力低下を圧
力検知器により検知しその信号を吸入弁の開閉調整機構
に導入し、この開閉調整機構により吸入弁の圧縮工程に
おける閉鎖のタイミングを早めるようにしたために、こ
の内燃機関に入る空気量(重量流量)が自動的に一定に
なるよう制御され、その結果、内燃機関を有効に運転す
ることができる。
[Operation] In the reciprocating internal combustion engine of the present invention, the pressure drop in the compressed air storage tank caused by the use of compressed air is detected by the pressure detector, and the signal is introduced into the opening / closing adjustment mechanism of the intake valve to adjust the opening / closing. Since the mechanism closes the timing of closing the intake valve in the compression process, the amount of air (weight flow rate) entering the internal combustion engine is automatically controlled to be constant, and as a result, the internal combustion engine is operated effectively. be able to.

【0008】[0008]

【実施例】以下、図1及び図2を参照して本発明による
往復度を内燃機関の一実施例を説明する。図1におい
て、1は圧力検知器2を有する圧縮空気貯槽であって、
この圧縮空気貯槽1の圧縮空気供給源として空気圧縮器
3が配管4を介して接続され、送気側として弁5と燃料
供給管6に接続した燃料混合器7を有する配管8によっ
て往復動内燃機関9の吸気管10に接続されいており、
混合気を往復動内燃機関9に出力に応じて供給するよう
になっている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an internal combustion engine having a reciprocating degree according to the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 is a compressed air storage tank having a pressure detector 2,
An air compressor 3 is connected as a compressed air supply source of the compressed air storage tank 1 through a pipe 4, and a reciprocating internal combustion is performed by a pipe 8 having a fuel mixer 7 connected to a valve 5 and a fuel supply pipe 6 as an air supply side. Connected to the intake pipe 10 of the engine 9,
The air-fuel mixture is supplied to the reciprocating internal combustion engine 9 according to the output.

【0009】往復動内燃機関9はピストン11を内蔵し
たシリンダ12のシリンダヘッド部に前記吸気管10と
排気管14を有し、これらに吸気弁10aと排気弁14
aとがそれぞれ設けられ、これらは弁駆動機構15,1
5aによって駆動されるようになっている。これらの弁
駆動機構は周知の構造で、ロッカーアーム16とプッシ
ュロッド17とこれを駆動するカム機構18等から構成
されている。
The reciprocating internal combustion engine 9 has the intake pipe 10 and the exhaust pipe 14 at the cylinder head portion of a cylinder 12 having a piston 11 built therein, and the intake valve 10a and the exhaust valve 14 are provided therein.
a are provided respectively, and these are valve drive mechanisms 15, 1
It is driven by 5a. These valve drive mechanisms have a well-known structure and are composed of a rocker arm 16, a push rod 17, a cam mechanism 18 for driving the push rod 17, and the like.

【0010】本発明の内燃機関は前記カム機構18が吸
気弁10aの開閉割合を調整する開閉調整機構19に組
込まれている。この開閉調整機構19は図2に示すよう
に軸受20に回転と所定の距離だけ往復移動することが
できるように支持されたカム軸21に駆動歯車22と特
殊カム23を設け、この特殊カム23にカムフオロア1
7aを下端に有するプッシュロッド17を接当してい
る。そしてこのカム軸21の端部に連結部24を経由し
て連結棒25が連結されており、この連結棒25に制御
装置27が接続されており、この制御装置27には圧力
検知器2からの信号Vが信号ライン28を経由して与え
られるようになっている。
In the internal combustion engine of the present invention, the cam mechanism 18 is incorporated in an open / close adjusting mechanism 19 for adjusting the open / close ratio of the intake valve 10a. As shown in FIG. 2, the opening / closing adjusting mechanism 19 is provided with a drive gear 22 and a special cam 23 on a cam shaft 21 supported by a bearing 20 so as to be rotatable and reciprocally movable a predetermined distance. To camphor follower 1
A push rod 17 having a lower end 7a is in contact therewith. A connecting rod 25 is connected to the end of the camshaft 21 via a connecting portion 24, and a connecting device 27 is connected to the connecting rod 25. Signal V is supplied via the signal line 28.

【0011】カム23はカム面がこの実施例においては
図3に示すように長手方向の各断面において異なる形状
の曲面に形成されており、カムフオロア17aと接当す
る位置によってプッシュロッド17のリフト量が変化す
るようになっている。一方、カム軸21は制御装置27
の駆動力によって矢印a−a’方向に往復動できるよう
になっており、このカム軸21が移動することによって
吸気弁10aのリフト量を変化させて「吸気弁10aの
閉鎖のタイミング」変化させて通常の内燃機関よりも自
動的に遅らせることができるようになっている。
In this embodiment, the cam 23 has a cam surface formed into a curved surface having a different shape in each cross section in the longitudinal direction as shown in FIG. 3, and the lift amount of the push rod 17 varies depending on the position where the cam follower 17a abuts. Is changing. On the other hand, the cam shaft 21 is controlled by the control device 27.
The camshaft 21 is moved to change the lift amount of the intake valve 10a to change the "timing of closing the intake valve 10a". Therefore, it is possible to automatically delay the internal combustion engine as compared with a normal internal combustion engine.

【0012】次に、前記本発明に係る往復動内燃機関の
作動について説明する。先ず夜間電力を用いて圧縮機3
を駆動して空気Aを吸入管3aから吸入・圧縮して例え
ば10kg/cm2 程度の圧縮空気として配管4を経て
圧縮空気貯槽1内に貯蔵する。そして昼間に往復動内燃
機関9を作動させて図示しない発電機を駆動する場合に
は配管6に設けられた制御弁5を操作して送気する。こ
の圧縮空気貯槽1内の圧力は圧力検知器2によって検知
され、その圧力に関連した信号Vは制御装置27に伝達
され、これを制御している。
Next, the operation of the reciprocating internal combustion engine according to the present invention will be described. First, compressor 3 using night power
To suck and compress the air A from the suction pipe 3a and store it in the compressed air storage tank 1 through the pipe 4 as compressed air of, for example, about 10 kg / cm 2 . When the reciprocating internal combustion engine 9 is operated during the day to drive a generator (not shown), the control valve 5 provided in the pipe 6 is operated to supply air. The pressure in the compressed air storage tank 1 is detected by the pressure detector 2, and the signal V related to the pressure is transmitted to the control device 27 and controls it.

【0013】このように圧縮空気貯槽1内に圧縮空気の
圧力によって制御装置27を介してカム軸21が矢印a
−a’のように移動する。前記圧力が低下する場合は制
御装置27によって連結棒25が矢印a’方向に押し出
されて内燃機関9のシリンダ12内に供給される空気流
量を一定に保つように吸入弁10aの閉鎖タイミングを
調整する。
As described above, the cam shaft 21 is moved in the compressed air storage tank 1 by the pressure of the compressed air through the control device 27 through the arrow a.
-Move like a '. When the pressure drops, the control device 27 pushes the connecting rod 25 in the direction of the arrow a ′ to adjust the closing timing of the intake valve 10a so as to keep the flow rate of the air supplied into the cylinder 12 of the internal combustion engine 9 constant. To do.

【0014】圧縮空気貯槽1内の圧力が低下した場合
は、吸気弁10aは圧縮行程においてやや早めに閉鎖
し、逆に圧縮空気圧が高い場合は、吸気弁10aはやや
遅めに閉鎖するように自動制御されるのである。一方、
配管8の途中には燃料混合器7が設けてあり、燃料供給
管6よりこの配管8中を流れる空気量、即ち内燃機関9
の出力に応じて燃料Fが供給されるようになっており、
この内燃機関9は所定の回転数で回転して図示しない発
電機を回転させて所定の電力を発電するようになってい
る。
When the pressure in the compressed air storage tank 1 drops, the intake valve 10a closes slightly earlier in the compression stroke, and conversely, when the compressed air pressure is high, the intake valve 10a closes slightly late. It is automatically controlled. on the other hand,
A fuel mixer 7 is provided in the middle of the pipe 8, and the amount of air flowing through the pipe 8 from the fuel supply pipe 6, that is, the internal combustion engine 9
The fuel F is supplied according to the output of
The internal combustion engine 9 is rotated at a predetermined rotation speed to rotate a generator (not shown) to generate predetermined power.

【0015】このようにして圧縮空気貯槽1内の圧縮空
気は内燃機関9によって消費されてその圧力が次第に低
下することになる。この圧力低下を圧力検知器2が検知
してその信号Vを制御装置27に導入してカム軸21を
順次矢印a’方向に移動させてプッシュロッド17のカ
ム23への接当位置が次第に小径部へと移動することに
なり、吸気弁10aの閉鎖タイミングを早めることにな
る。
In this way, the compressed air in the compressed air storage tank 1 is consumed by the internal combustion engine 9 and its pressure gradually decreases. This pressure drop is detected by the pressure detector 2 and the signal V thereof is introduced into the control device 27 to sequentially move the cam shaft 21 in the direction of the arrow a ′ so that the contact position of the push rod 17 to the cam 23 is gradually reduced in diameter. Therefore, the closing timing of the intake valve 10a is advanced.

【0016】その結果、シリンダ12に供給される空気
量(重量流量)は一定となる。このとことは、圧縮空気
貯槽1内の圧力が次第に低下するにもかかわらず、シリ
ンダ12内に供給される空気量が一定することによって
内燃機関9が発生する出力を一定とすることができるの
である。本発明は夜間電力を圧縮空気として貯え、昼間
はこれを往復動内燃機関に使用することができるもので
ある。通常100KWの出力の内燃機関を圧縮空気貯蔵
型の内燃機関よ使用し、夜間に30KWの空気圧縮器で
圧縮空気を貯えた場合、夜間電力の変換利用率を80%
とすれば24KW(30KW×0.8 =24KW)の電力
が内燃機関に移動したことになり、内燃機関は100K
Wで運転されているときと同じ燃料消費量が124KW
の出力を発生することができるのである。
As a result, the amount of air (weight flow rate) supplied to the cylinder 12 becomes constant. This means that even though the pressure in the compressed air storage tank 1 gradually decreases, the output generated by the internal combustion engine 9 can be made constant because the amount of air supplied to the cylinder 12 becomes constant. is there. The present invention stores nighttime electric power as compressed air, which can be used in a reciprocating internal combustion engine during the daytime. When a compressed air storage type internal combustion engine is normally used as an internal combustion engine with an output of 100 kW and compressed air is stored with an air compressor of 30 kW at night, the conversion utilization rate of night power is 80%.
If so, the electric power of 24 kW (30 kW x 0.8 = 24 kW) has been transferred to the internal combustion engine, which is 100 K
The same fuel consumption as when operated at W is 124 kW
The output of can be generated.

【0017】本発明は、このように夜間電力を一旦圧縮
空気に変換して昼間に移動させることが可能となるの
で、電力使用の平準化を計ることができると同時に、安
価な夜間電力を昼間に使用することを可能にするもので
ある。前記実施例において吸気弁10aの開閉調整機構
19にカム機構を用いた場合について説明したが、勿論
本発明はこれに限定されるものではなく例えば油圧機構
等他の手段を用いてもよい。
According to the present invention, since it is possible to temporarily convert nighttime electric power into compressed air and move it during the daytime, it is possible to equalize the use of electric power, and at the same time, to supply inexpensive nighttime electric power during the daytime. It can be used for. Although the case where the cam mechanism is used for the opening / closing adjusting mechanism 19 of the intake valve 10a has been described in the above embodiment, the present invention is not limited to this, and other means such as a hydraulic mechanism may be used.

【0018】[0018]

【発明の効果】以上の説明から明らかなように本発明に
よる往復動内燃機関によれば貯蔵された圧縮空気を利用
することができ、内燃機関の機関の効率向上を計ること
ができるばかりでなく、貯蔵された圧縮空気の圧力低下
に伴ない吸気弁の閉鎖を早めることによってシリンダ内
の空気量を一定とすることができ、その結果、内燃機関
内の圧力を所定の範囲内に保持することが可能となり、
機関の安定した運転が可能となる。
As is clear from the above description, according to the reciprocating internal combustion engine of the present invention, the stored compressed air can be utilized, and not only the efficiency of the internal combustion engine can be improved. , The amount of air in the cylinder can be made constant by advancing the closing of the intake valve due to the pressure drop of the stored compressed air, and as a result, the pressure in the internal combustion engine can be kept within a predetermined range. Is possible,
Stable operation of the engine becomes possible.

【0019】また、このように構成された往復動内燃機
関を使用することによって夜間電力によって得られた圧
縮空気を昼間に使用して発電することができるために、
夜間電力を効率的に利用することも可能となる。
Further, since the reciprocating internal combustion engine configured as described above is used, the compressed air obtained by the night power can be used in the daytime to generate electricity.
It is also possible to use the night power efficiently.

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

【図1】本発明による往復動内燃機関の一実施例を示す
系統図である。
FIG. 1 is a system diagram showing an embodiment of a reciprocating internal combustion engine according to the present invention.

【図2】吸気明による往復動内燃機関の一実施例におけ
る吸気弁の開閉調整機構の側面図である。
FIG. 2 is a side view of an intake valve opening / closing adjusting mechanism in an embodiment of a reciprocating internal combustion engine using bright intake air.

【図3】カムの形状を示す斜視図である。FIG. 3 is a perspective view showing the shape of a cam.

【符号の説明】[Explanation of symbols]

1 圧縮空気貯槽 2 圧力検知器 3 空気圧縮
機 6 燃料供給管 7 燃料混合器 9 往復動内燃機関 10 吸入
管 10a 吸入弁 12 シリンダ 18 カム機構 19 開閉調整
機構 20 軸受 21 カム軸 22 駆動歯車 23 カム 2
4 連結部 25 連結棒 27 制御装置 28 信号ライン
1 Compressed Air Storage Tank 2 Pressure Detector 3 Air Compressor 6 Fuel Supply Pipe 7 Fuel Mixer 9 Reciprocating Internal Combustion Engine 10 Suction Pipe 10a Suction Valve 12 Cylinder 18 Cam Mechanism 19 Opening / Closing Mechanism 20 Bearing 21 Cam Shaft 22 Drive Gear 23 Cam Two
4 connecting part 25 connecting rod 27 control device 28 signal line

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 圧力検知器を有する圧縮空気貯槽と往復
動内燃機関の吸気管とを燃料混合器を有する配管で連結
するとともに前記吸気管に配置された吸気弁の開閉調整
機構を設け、前記圧力検出器の信号を前記開閉調整機構
に導入し、前記圧縮空気貯槽内の圧力低下に対応して圧
縮工程における前記吸気弁の閉鎖時期を早くするように
制御することを特徴とする往復動内燃機関。
1. A compressed air storage tank having a pressure detector and an intake pipe of a reciprocating internal combustion engine are connected by a pipe having a fuel mixer, and an opening / closing adjusting mechanism for an intake valve arranged in the intake pipe is provided. A reciprocating internal combustion engine characterized in that a signal from a pressure detector is introduced into the opening / closing adjusting mechanism, and control is performed so as to accelerate the closing timing of the intake valve in the compression process in response to the pressure drop in the compressed air storage tank. organ.
JP5351788A 1993-12-29 1993-12-29 Reciprocating internal combustion engine Withdrawn JPH07197819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5351788A JPH07197819A (en) 1993-12-29 1993-12-29 Reciprocating internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5351788A JPH07197819A (en) 1993-12-29 1993-12-29 Reciprocating internal combustion engine

Publications (1)

Publication Number Publication Date
JPH07197819A true JPH07197819A (en) 1995-08-01

Family

ID=18419615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5351788A Withdrawn JPH07197819A (en) 1993-12-29 1993-12-29 Reciprocating internal combustion engine

Country Status (1)

Country Link
JP (1) JPH07197819A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009144699A (en) * 2007-12-14 2009-07-02 Hyundai Motor Co Ltd Impulse charger for vehicle engine
CN110185661A (en) * 2019-04-30 2019-08-30 广东锻压机床厂有限公司 Multiple position press air cushion device for automatically adjusting pressure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009144699A (en) * 2007-12-14 2009-07-02 Hyundai Motor Co Ltd Impulse charger for vehicle engine
CN110185661A (en) * 2019-04-30 2019-08-30 广东锻压机床厂有限公司 Multiple position press air cushion device for automatically adjusting pressure

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