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' 〇f修(更)正替換頁； 一 — ---—j 玖、發明說明： 【發明所屬之技術領域】 本發明係關於一種可調式進氣結構， 速克達機車引擎之負壓調整式進氣結構。匕9 、用於 5 10 15 【先前技術】 於一般速克達機車之引擎設計中，其 ^ 與引擎間之相互配合係極為重要，例如，引擎：俨：：二 低轉速時’其所需之進氣管路之截面積較小、長二冉 ==有利於提高進氣管路内之氣體流速，並因I增強慣 ^乍用以及脈動效果，進而提昇進氣效率、增加引擎扭力 二:1丨擎於快速或稱高轉速時，其所需之進氣管路之截 車:大、長度較短’如此可以降低流阻，因而有 乳效率之提昇’進而改善燃燒過程，提昇馬力。、 然而，於現今速克達機車之引擎其進氣管路之 =㈣其截面積以及長度皆㈣，因而僅能符合 ^車父而轉速其中—種進氣需求，而無法配合全域轉速之 孔效率要求，造成較低轉速或較高轉 顧，並非十分理想。 -，，、凌兼 【發明内容】 要月二速克達機車引擎之負壓調整式進氣結構主 要：：有-速克達機車引擎、一空氣遽清器、—進氣管路、 —源、以及-負壓調整式進氣結構。其中，速克達機 20 1242068 i 車引擎亚包括有-汽缸頭，且此汽缸頭並包括有 室、-進氣道、以及一排氣道，其中 ζ:了-燃燒 分別連通至燃燒室。 巾之進輯與排氣道並 進氣管路係連通於上述逮克達機車引擎之 遏η空氣濾清器之間，且進氣管 面積。 俗之杈截面具有一進氣截 路、-另二負Γ調整式進氣結構並包括有-旁通負壓管 容1進㈣器、以及一控制間片，其中之控制間片係 合叹於進軋管路内部，旁通負壓管路一端係 10源、另一端則連通至負壓致動器。 ’、 /、二 奋促ΓΓΐ述結構，當速克達機車引擎之轉速愈高時，其 二：使，源内之負屢值愈低，進而可以透過旁通負麼管 :内之負壓而驅動負壓致動器，此時，負磨致動器可再帶 動控制閥片開啟謂得進氣管路 15之亦然。 ^乂大之進乳截面積，反 因此，本發明之結構可配合速克達機車引擎 二：調整進氣管路之進氣截面積之大小，於高速時，； 大之進氣截面積，於低速時，則可獲得較小之進氣 20 即本發明之結構可隨引擎之轉速而改變進氣管路 =面=大小，使得引擎之進氣效率可有效提升，進而 可兼顧引擎全域轉速之進氣效率要求。 ^述之旁通負辭路上可再包括有—電磁閥，且 當速克達機車引擎之轉土亲彻於一 、糸 閉旁通参题W后 设低轉速時，便控制關 ’之，當速克達機車引擎之轉速高於— 1242068 1Λ日鞭〉正替換 一簧片、一連桿、 之一侧面、螺旋彈 將連桿與螺旋彈簧 5 此外’上述之負壓致動器可包括有 =及一螺旋彈簧，且連桿係固設於簧片 黃則係組設於簧片之另一侧面，當然， 組設於簧片之同一側面亦可。 迷見運機車引擎可為1射引擎，且直包括 有-電子燃油喷嘴’此電子燃油喷嘴係組設於進氣管路上 1〇 域道之—側、並位於μ頭進氣道與旁 ^、以路連接進氣管路鄰近汽紅頭進氣道之—端之間。 【實施方式】 本發明之較佳具體實施例說明如下。 15 請同時參閱圖m本發明第一較佳實施例控制間片盆 關閉時之架構圖、及圖2係圖1A_A斷面之剖面圖，1中顯 不有一速克達機車引擎卜且此速克達機車引擎！包括有L 汽缸頭η，同時此汽缸頭Η則再包括有—燃燒室⑴…進 氣道U2、以及一排氣道"3,其中之進氣道112與#氣道⑴ 亚分別連通至燃燒室ln。而前述之速克達機車引擎i於本 實施例中係為一噴射引擎’且其包括有-電子燃油噴嘴12。 此外，圖式中並顯示有一空氣濾清器2，且於速克達 機車引擎1之進氣道112與空氣濾清器2之間連通有一進氣 管路3 ’於本實施例中氣管路3係由二並聯之小型進1 20 _68 严修(更j正替换.. 官路31，32所組成，且每一小型進氣管路31，32之橫截面具 有一進氣截面積。 又’圖式中另顯示有一真空源5、以及一負壓調整式 進氣結構4,其中’真空源5並包括有—負壓扣、以及— 5穩壓箱52,其中之負壓管51之其中1係連通至進氣管路3 上並鄰近於汽缸頭U進氣道112之一側、另一端係連通至穩 壓箱52，而穩壓箱52之作用即在於穩定負壓管^所導引之 負壓壓力。至於負壓調整式進氣結構4則是包括有一旁通負 壓管路4卜-負壓致動器42、以及一控制間片43，且於本 10貝％例巾才工制閥片43係以常關（n〇rmal cl〇se)狀態容設於 其中一小型進氣管路31内。 另外負壓凋整式進氣結構4之旁通負壓管路41其一 端係連通至真空源5之穩壓箱52、另_端則連通至負遷致動 器42,且旁通負壓管路41上尚連接有—電磁閥4ιι，此電磁 15閥411則再受速克達機車上之一電子控制單元6 ( e c。)所控 制。於本實施例中，負壓致動器42尚包括有一簧片421、一 連杯422以及-螺旋彈簧423，且連桿422係固設於箬片U ^ 之其中-，面，螺旋彈簧423係組設於菁片42i之另一側面。 於本實施例中所使用之喷射引擎之速克達機車引擎i 20其電:燃油喷嘴12係組設於進氣管路3上並鄰近於汽缸頭 11,氣遏112之彻]，且電子燃油噴嘴丄2係位於汽缸頭η 進氣逼112與旁it負壓管路41連接進氣管路3鄰近汽缸頭^ 進氣道112之一端之間。 1242068'〇f repair (correct) the replacement page; a ------ j 玖, description of the invention: [Technical field to which the invention belongs] The present invention relates to an adjustable air intake structure for adjusting the negative pressure of a speed locomotive engine Air intake structure. Dagger 9, for 5 10 15 [Previous technology] In the design of the engine of a general speed locomotive, the cooperation between ^ and the engine is extremely important. For example, the engine: 俨 :: 2 low speed 'its required The cross-sectional area of the air intake pipe is small and long == It is conducive to increasing the gas flow rate in the air intake pipe, and because of the increase in inertia and pulsation effect, it improves the air intake efficiency and the engine torque. : 1 丨 In the case of fast or high speed, the interception of the required intake pipe: large and short length 'so it can reduce the flow resistance, so the milk efficiency is improved', thus improving the combustion process and increasing horsepower . However, in today ’s engines of Sukhoda locomotive, the intake line of the engine is equal to its cross-sectional area and length. Therefore, it can only meet the requirements of the car owner and the speed, which is a kind of air intake demand, and cannot match the hole of the global speed. Efficiency requirements, resulting in lower speeds or higher referrals, are not ideal. -,,, Ling Jian [Contents of the Invention] The negative-pressure-adjustable air intake structure of the second-speed Keda locomotive engine: Mainly: Yes-Su Keda locomotive engine, an air cleaner,-intake duct,- Source, and-negative pressure adjustment type intake structure. Among them, the speed engine 20 1242068 i engine sub-cylinder includes a -cylinder head, and this cylinder head also includes a chamber, -intake port, and an exhaust port, where ζ: Le-combustion is connected to the combustion chamber respectively. The air intake duct and the intake duct are connected between the air filter of the catcher locomotive engine and the area of the intake duct. The cross section of the conventional branch has an air intake cut-off, another two negative Γ-adjustable air intake structures, and includes a by-pass negative pressure tube container 1 inlet device, and a control interval plate, wherein the control interval plate is in agreement. Inside the rolling pipeline, one end of the bypass negative pressure pipeline is connected to 10 sources, and the other end is connected to a negative pressure actuator. ', /, Two urges ΓΓ to describe the structure, when the speed of the speed locomotive engine is higher, the second is: make the negative repeat value in the source lower, and then can bypass the negative tube: the negative pressure inside The negative pressure actuator is driven, and at this time, the negative grinding actuator can drive the control valve plate to open, which is also the same as the intake pipe 15. ^ Large cross section of milk intake, on the contrary, the structure of the present invention can be adapted to the speed of the locomotive engine 2: adjust the size of the intake cross section of the intake pipe at high speed; At low speeds, a smaller air intake 20 can be obtained. That is, the structure of the present invention can change the intake line = surface = size according to the engine speed, so that the intake efficiency of the engine can be effectively improved, and the engine's global speed can be taken into account. Required for air intake efficiency. ^ The bypass negative phrase can further include a solenoid valve, and when the turn of the engine of the Scooter locomotive is close to the bypass, and the bypass speed is set to a low speed, the control is turned off. When the speed of the speed locomotive engine is higher than — 1242068 1Λsun whip> is replacing a reed, a connecting rod, a side, a spiral spring connecting the connecting rod and the coil spring 5 In addition, the above-mentioned negative pressure actuator may include There are = and a helical spring, and the connecting rod is fixedly arranged on the reed yellow, and it is arranged on the other side of the reed. Of course, it can be arranged on the same side of the reed. The engine of the locomotive can be a 1-engine engine, and it includes an electronic fuel nozzle. This electronic fuel nozzle system is located on the side of the air intake pipe on the side of the 10th road, and is located on the side of the μ head air inlet. 2. Connect the air inlet pipe to the end of the inlet of the steam red head. [Embodiment] A preferred embodiment of the present invention is described below. 15 Please also refer to FIG. M for the structure diagram of the first preferred embodiment of the present invention when the control disc is closed, and FIG. 2 is a cross-sectional view of the section of FIG. 1A_A. There is no speed locomotive engine in FIG. Keda locomotive engine! It includes L cylinder head η, and at the same time, this cylinder head Η includes -combustion chamber ⑴ ... intake port U2, and an exhaust port " 3, among which intake port 112 and # 气 道 ⑴ are connected to the combustion respectively Room ln. The aforementioned speed locomotive engine i is an injection engine 'in this embodiment and includes an electronic fuel nozzle 12. In addition, an air filter 2 is also shown in the drawing, and an air inlet pipe 3 ′ is connected between the air inlet 112 and the air filter 2 of the speed locomotive engine 1. In the embodiment, the air pipe 2 The 3 series is composed of two parallel small-sized inlets 1 20 _68 (repaired more .. Guan Road 31, 32), and the cross-section mask of each small-sized inlet pipe 31, 32 has an intake cross-sectional area. 'The figure also shows a vacuum source 5 and a negative pressure adjustment type air intake structure 4, among which the' vacuum source 5 includes-a negative pressure buckle and-5 voltage regulator box 52, of which the negative pressure tube 51 Among them, 1 is connected to the intake pipe 3 and is adjacent to one side of the cylinder head U intake passage 112, and the other end is connected to the surge tank 52, and the function of the surge tank 52 is to stabilize the negative pressure pipe ^ Guided negative pressure. As for the negative-pressure-adjustable intake structure 4, it includes a bypass negative-pressure line 4-a negative-pressure actuator 42 and a control section 43. The wiper valve 43 is housed in one of the small intake ducts 31 in a normally closed state. In addition, the bypass pressure of the negative pressure withered intake structure 4 One end of the pipeline 41 is connected to the voltage stabilizing box 52 of the vacuum source 5 and the other end is connected to the negative displacement actuator 42. The bypass negative pressure pipeline 41 is still connected to the solenoid valve 4ιι, this electromagnetic 15 The valve 411 is further controlled by an electronic control unit 6 (ec.) On the Scooter locomotive. In this embodiment, the negative pressure actuator 42 further includes a reed 421, a continuous cup 422, and a coil spring 423. And the connecting rod 422 is fixedly arranged in the cymbal U ^-face, and the coil spring 423 is set on the other side of the cyan plate 42i. The speed locomotive engine of the jet engine used in this embodiment i 20 its electricity: the fuel nozzle 12 series is set on the intake pipe 3 and is adjacent to the cylinder head 11 and the gas suppression 112], and the electronic fuel nozzle 丄 2 series is located on the cylinder head η intake pressure 112 and the side it The negative pressure line 41 is connected between the intake line 3 and one end of the cylinder head ^ the intake port 112. 1242068
10 15 同寸’閱圖卜圖2、及圖5則系本發明第-較佳實施 HU轉速㈣力之關係曲線圖，藉由上述結構，當速 弓1擎1於較低轉速時，例如剛開始啟動時，亦即速 克達機車引擎i之轉速低於—預設低轉速時，如圖5B所示 _聊，此時，其所對應之壓力值為彻响，且電 ^411即㈣受速克達機車上之電子控制單元6(ECU)所 匕制而關閉旁通負壓管路41，於此叫，旁通負壓管㈣ 内之，壓即不會驅動負壓致動器42内之簣片421，使得菁片 藉由’、本身之彈性力而驅動連桿422，連桿422則再帶動 控制閥片43轉動，進而關閉其中一小型進氣管路31之進氣 截面積，促使整體進氣管路3可獲得—較小之進氣截面積以 配合速克達機車引擎丨之低轉速。 口月同日守參閱圖3係本發明第一較佳實施例控制閱片盆 開啟時之架構圖、圖4係圖3B_B斷面之剖面圖、及圖I 與圖1及¢2相反’當速克達機車引擎i處於較高轉速之狀態 時’例如以較高轉速而於行駛中時，亦即速克達機車引擎丄 之轉速高於—預設高轉速時，如圖5B所示之6〇__，此 日才’其所對應之壓力值為_8〇mmHg，且電磁閥411即會接受 速克達機車上之電子控制單元6(ECU)所控制而向後移動 並因此導通旁通負壓管路41，並使得真空源5内之負壓經由 旁通負壓官路41而驅動負壓致動器42内之簧片421並使筈 片421向上彈起，促使連桿422跟隨向上移動而藉以帶動控 制閥片43向上旋轉’進而開啟其中—小型進氣管路3 !之進 20 1242068^ Η 氣截面積，使得進氣管路3可獲得較大之進氣截面積以配合 速克達機車引擎1之高轉速。 請同時參閱圖丨、圖2、圖3、圖4、圖从係本發明第一 較佳實施例之引擎轉速與馬力之關係曲線圖、及圖5Β，藉 5 $上述結構，進氣管路3之進氣截面積其大小可配合速克達 機車=擎1之轉速高低而調整，於速克達機車引擎i處於高 速狀心日守可凋整進氣管路3以獲得較大之進氣截面積，於 速^達機車引擎！處於低速狀態時，則可調整進氣管路3以 獲得較小之進氣截面積，如此於速克達機車引擎1之全域轉 10 =引Γ兼顧其進氣效率之要求，而可有效提升速克達 一、 1之進軋效率，而其所具有之進氣效率則如圖5所 口月鬥吋芩閲圖6係本菸明筮一&处〜h 15 2010 15 with the same size, as shown in Figure 2, and Figure 5 is the relationship between the first and the preferred implementation of the HU speed force curve, with the above structure, when the speed bow 1 engine 1 at a lower speed, such as At the beginning of the start, that is, when the speed of the engine of the speed locomotive i is lower than the preset low speed, as shown in Fig. 5B_Liao, at this time, the corresponding pressure value is complete, and the electric ^ 411 is ㈣ The bypass negative pressure line 41 is closed by the electronic control unit 6 (ECU) on the Scooter locomotive. This is called the bypass negative pressure tube. The pressure in the bypass negative pressure tube will not drive the negative pressure to actuate. The diaphragm 421 in the valve 42 causes the diaphragm to drive the connecting rod 422 by its own elastic force, and the connecting rod 422 then drives the control valve plate 43 to rotate, thereby closing the air intake of one of the small intake pipes 31 The cross-sectional area promotes the availability of the overall intake duct 3-a smaller cross-sectional area of the intake air to match the low speed of the speed locomotive engine. Fig. 3 is a structural diagram of the first preferred embodiment of the present invention when the reading basin is controlled to open, Fig. 4 is a cross-sectional view of Fig. 3B_B, and Fig. 1 is opposite to Fig. 1 and ¢ 2. When the keda locomotive engine i is at a higher speed, such as when driving at a higher speed, that is, when the speed of the speed locomotive engine 丄 is higher than—the preset high speed, as shown in FIG. 5B-6 〇__Only this day, its corresponding pressure value is _80mmHg, and the solenoid valve 411 will be controlled by the electronic control unit 6 (ECU) on the Scooter locomotive to move backward and thus bypass the bypass. The negative pressure pipe 41 causes the negative pressure in the vacuum source 5 to bypass the negative pressure official circuit 41 to drive the reed 421 in the negative pressure actuator 42 and cause the reed 421 to pop up, so that the connecting rod 422 follows Move upwards to drive the control valve plate 43 to rotate upwards, and then open it—the small intake pipe 3! Zhijin 20 1242068 ^ 截 Air cross-sectional area, so that the intake pipe 3 can obtain a larger intake cross-sectional area to match High speed of Scooter locomotive engine 1. Please refer to FIG. 丨, FIG. 2, FIG. 3, FIG. 4, and FIG. 5 for the relationship between the engine speed and the horsepower of the first preferred embodiment of the present invention, and FIG. 5B. The size of the intake cross-section of 3 can be adjusted according to the speed of the speed locomotive = engine 1. The engine i of the speed locomotive is at a high speed and the sun guard can deflate the intake pipe 3 to obtain a larger inlet. Air cross-section area, reaching the engine of the locomotive! In the low-speed state, you can adjust the intake pipe 3 to obtain a smaller intake cross-sectional area. In this way, when the speed of the locomotive engine 1 is 10, it takes into account the requirements of its intake efficiency, which can effectively improve The rolling efficiency of the speed maker 1 and 1, and the air intake efficiency it has is shown in Figure 5; see Figure 6 is the original smoke and the first ~ h 15 20
關閉時之架構圖、圖7係圖二一=:控制閥片 Μ丨尔0 面之剖面圖、 :第D::佳實施例控制閥片其開啟時之架構 :I:二其主要結料^Diagram of the structure when closed, Figure 7 is Figure 21 =: Sectional view of the control valve sheet M1, 0 :, D :: The structure of the control valve sheet when it is opened in the preferred embodiment: I: Second, the main material ^
在於本貫施例中之電磁閥71係於速克達機」 於較低轉速時，例如剛開始啟 71會接受速克達機車上之電 ：;之一 啟狀態，且負壓源74之負 ：制而· 通過帝磁Μ” 貝& s 741與穩壓箱742内之負壓〒 之連二51乂而驅動Μ致動器75，進而使負壓致動器7 :連：〜動控制間片77,並使其關閉進氣管路 進乳官路761，如此即可使進氣管路76獲得-較小之 10 J242068_ ...... 1 II «Μ 无#日修便)正替换? 3 & Ή 進氣截面積以配合速克達機車引擎72之較低轉速，此如圖6 及圖7所示。 反之’當速克達機車引擎72於較高轉速時，此時之電 磁閥71會接受速克達機車上之電子控制單元乃所控制而呈 5現關閉狀態，如此，負壓源74之負壓管741與穩壓箱742内 之負壓即被電磁閥71所阻隔而無法再行驅動負壓致動器 75，即控制閥片77會藉由簧片752之彈性力以及連桿乃1之 π動而呈現開啟狀態，以使進氣管路76可獲得較大之進氣 截面積以配合速克達機車引擎72之較高轉速，此如圖8及圖 10 9所示。 15 由上述可知，不論電磁閥於速克達機車引擎之較低轉 速下先呈現開啟或是關閉狀態’皆可利用負壓源之負壓而 調整進氣管路之截面積’亦即第二較佳實施例所述之設計 方式亦可達成上述第一較佳實施例所述之各種功效。 上述實施例僅係為了方便說明而舉例而已，本發明所 主張之權利範圍自應μ請專·圍所料準. 於上述實施例。 汗1皇限 【圖式簡單說明】 其關閉時之架構圖。 其開啟時之架構圖。 圖1係本發明第一較佳實施例控制閥片 圖2係圖ΙΑ-Α斷面之剖面圖。 圖3係本發明第一較佳實施例控制閥片 圖4係圖3B-B斷面之剖面圖。 20 J242 随― .盘^修(更) 馬力之關係 =本發明第—較佳實施例之”轉速與 曲線圖 圖6係本發明第二較佳實施例控制 圖7係圖6C-C斷面之剖面圖。 圖8係本發明第二較佳實施例控制 圖。 ::::本發明第—較佳實· ”轉速與*力之關係 閱片其關閉時之架構圖 閥片其開啟# 圖9係圖8D-D斷面之剖面国n 守之架構圖In the present embodiment, the solenoid valve 71 is connected to the speed maker. At a low speed, for example, the start 71 will receive electricity from the speed locomotive: one state, and the negative pressure source 74. Negative: make · Drive the M actuator 75 through the two 51 乂 of the negative pressure 帝 in the DMG M & s 741 and the voltage regulator box 742, and then make the negative pressure actuator 7: connect: ~ Control the interlayer 77, and make it close the air inlet pipe into the milk channel 761, so that the air inlet pipe 76 can be obtained-the smaller 10 J242068_ ...... 1 II «Μ 无 # 日 修()) Is being replaced? 3 & Ή Intake cross-sectional area to match the lower speed of the speed locomotive engine 72, as shown in Figures 6 and 7. Otherwise, when the speed of locomotive engine 72 is at a higher speed At this time, the solenoid valve 71 will be controlled by the electronic control unit on the Scooter locomotive and it will be in the 5 closed state. In this way, the negative pressure in the negative pressure tube 741 of the negative pressure source 74 and the negative pressure in the voltage regulator box 742 are removed. The electromagnetic valve 71 is blocked and can no longer drive the negative pressure actuator 75, that is, the control valve plate 77 will be opened by the elastic force of the reed 752 and the connecting rod is π, so that the intake pipe Road 76 can obtain a larger intake cross-sectional area to match the higher speed of the speed locomotive engine 72, as shown in Figure 8 and Figure 10 9. 15 As can be seen from the above, regardless of the solenoid valve in the speed locomotive engine At lower speeds, it will open or close first. “You can use the negative pressure of the negative pressure source to adjust the cross-sectional area of the intake pipe.” That is, the design method described in the second preferred embodiment can also achieve the first. Various effects described in the preferred embodiment. The above embodiments are merely examples for the convenience of description. The scope of the rights claimed in the present invention is self-explanatory. Please refer to the expectations. In the above embodiments. Brief description of the diagram] The structure diagram when it is closed. The structure diagram when it is opened. Figure 1 is a control valve piece of the first preferred embodiment of the present invention. Figure 2 is a cross-sectional view of the cross section of Figure IA-A. The first preferred embodiment of the invention is the control valve. Figure 4 is a cross-sectional view of Figure 3B-B. 20 J242 The relationship between the horsepower and the disk (repair) (horsepower) = "the first and the preferred embodiment of the present invention" Graph FIG. 6 is a control diagram of the second preferred embodiment of the present invention. FIG. 7 is a cross-section of the cross-section of FIG. 6C-C. Illustration. Fig. 8 is a control diagram of the second preferred embodiment of the present invention. :::: The first aspect of the present invention— "Relationship between rotation speed and force" The structure diagram when the film is closed and the valve plate is opened # Figure 9 is the structure diagram of the cross section of the cross section of Figure 8D-D
10【圖號說明】 1 速克達機車擎 111燃燒室 丨i 2 12 電子燃油噴嘴2 31，32小型進氣管路 4 41 旁通負壓管路411 421簧片 422 43 控制閥片 5 52 穩壓箱 6 72 速克達機車擎 74 負壓源 741 75 負壓致動器 751 76 進氣管路 761 進氣道 空氣滤清器 負壓調整 電磁閥 連桿 真空源 電子控制單元71 11汽缸頭 113排氣道 3進氣管路 式進氣結構 42負壓致動器 423螺旋彈簀 51負壓管 電磁閥10 [Illustration of drawing number] 1 Scooter engine 111 combustion chamber 丨 i 2 12 Electronic fuel nozzle 2 31, 32 small intake line 4 41 Bypass negative pressure line 411 421 Reed 422 43 Control valve 5 5 Pressure regulator box 6 72 Scooter engine 74 Negative pressure source 741 75 Negative pressure actuator 751 76 Intake line 761 Inlet air filter Negative pressure adjustment Solenoid valve Vacuum source Electronic control unit 71 11 Cylinder Head 113 Exhaust duct 3 Intake line type Intake structure 42 Negative pressure actuator 423 Helical spring 51 Negative pressure tube solenoid valve
負壓管 連桿 73 電子控制單元 742穩壓箱 752簣片 J、型進氣管路7 7 控制閥片 12Negative pressure pipe Connecting rod 73 Electronic control unit 742 Voltage stabilizer box 752 diaphragm J, type inlet pipe 7 7 Control valve plate 12