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原動(dòng)機(jī)啟動(dòng)且調(diào)速器控制后，打開
針閥（逆時(shí)針轉(zhuǎn)動(dòng)），直到調(diào)速器運(yùn)行變得不穩(wěn)定。然后
緩慢關(guān)閉針閥（順時(shí)針轉(zhuǎn)動(dòng)），直到調(diào)速器穩(wěn)定。
讓調(diào)速器和原動(dòng)機(jī)達(dá)到工作溫度。作為
調(diào)速器預(yù)熱，可能會(huì)變得不穩(wěn)定。如果是，緩慢關(guān)閉針閥
直到調(diào)速器穩(wěn)定下來(lái)。不要完全關(guān)閉針閥。這
可能導(dǎo)致啟動(dòng)或甩負(fù)荷時(shí)超速過(guò)度。
3161調(diào)速器手冊(cè)03101
6伍德沃德
第三章。
操作原理
組件說(shuō)明
擺線轉(zhuǎn)子油泵擺線轉(zhuǎn)子油泵位于調(diào)速器底座中。
泵的內(nèi)轉(zhuǎn)子由驅(qū)動(dòng)軸中的銷驅(qū)動(dòng)，并承載
外轉(zhuǎn)子周圍嚙合，將機(jī)油泵送至蓄能器活塞。
蓄能器—由活塞和彈簧組成的單個(gè)蓄能器起到
用于油泵的安全閥，并為快速
伺服運(yùn)動(dòng)。機(jī)油由調(diào)速器泵泵送至蓄能器
蓄能器彈簧壓縮時(shí)壓力升高。當(dāng)
壓力升至預(yù)定水平，機(jī)油通過(guò)
活塞壁中的卸壓口。
動(dòng)力活塞動(dòng)力活塞通過(guò)連桿與輸出軸相連
操縱桿總成。動(dòng)力活塞底部設(shè)計(jì)有大面積
頂部有一小塊區(qū)域（差速器活塞）。壓力小幅度增加
活塞的大面積將使活塞向上移動(dòng)，導(dǎo)致輸出軸旋轉(zhuǎn)
在“增加”方向。只有當(dāng)機(jī)油在以下位置時(shí)，活塞才能向下移動(dòng)
活塞被釋放到油底殼。流入或流出動(dòng)力活塞底部的機(jī)油
由球頭先導(dǎo)閥和球頭先導(dǎo)閥襯套調(diào)節(jié)。
先導(dǎo)閥系統(tǒng)
先導(dǎo)閥系統(tǒng)由兩個(gè)部件組成，球頭先導(dǎo)閥
（旋轉(zhuǎn)）襯套和球頭先導(dǎo)閥柱塞。襯套旋轉(zhuǎn)
相對(duì)于先導(dǎo)閥柱塞，減少兩部分之間的摩擦。這個(gè)
先導(dǎo)閥柱塞的控制凸臺(tái)調(diào)節(jié)通過(guò)
球頭襯套的控制端口。
降低先導(dǎo)閥柱塞時(shí)，高壓油流過(guò)
襯套控制端口，至動(dòng)力活塞底側(cè)和活塞
向上移動(dòng)。當(dāng)先導(dǎo)閥柱塞升起時(shí)，來(lái)自
動(dòng)力活塞釋放到油底殼，活塞頂部的壓力較高
向下移動(dòng)活塞。當(dāng)原動(dòng)機(jī)在穩(wěn)態(tài)運(yùn)行時(shí)
先導(dǎo)閥柱塞的控制凸臺(tái)覆蓋球頭襯套中的端口
動(dòng)力活塞不移動(dòng)。先導(dǎo)閥柱塞的移動(dòng)為
由球頭組件控制。
球頭總成
球頭系統(tǒng)包括球頭、飛錘、速度器彈簧、推力
軸承和調(diào)速器螺塞。球頭作為先導(dǎo)閥襯套的一部分
由驅(qū)動(dòng)聯(lián)軸器和驅(qū)動(dòng)軸旋轉(zhuǎn)。
當(dāng)球頭旋轉(zhuǎn)時(shí)，離心力使飛錘轉(zhuǎn)動(dòng)
表面的同時(shí)，調(diào)速器彈簧迫使止推軸承向下
在飛錘腳趾上，與飛錘的離心力相反。推
減速器插頭向下會(huì)增加減速器上的向下壓力
彈簧，調(diào)速器轉(zhuǎn)速設(shè)定值增加。然后原動(dòng)機(jī)運(yùn)行
以更高的速度在飛錘上產(chǎn)生更大的離心力
克服調(diào)速器彈簧力并重新平衡系統(tǒng)。

After the prime mover has started and the governor is controlling, open the needle valve (turn it CCW) until governor operation just becomes unstable. Then slowly close the needle valve (turn it CW) until the governor just becomes stable. Allow the governor and prime mover to reach operating temperature. As the governor warms up, it may become unstable. If so, slowly close the needle valve until the governor just becomes stable. DO NOT fully close needle valve. This may cause excessive overspeed on start-up or load rejection. 3161 Governor Manual 03101 6 Woodward Chapter 3. Principles of Operation Component Description Gerotor Oil Pump—The gerotor oil pump is located in the base of the governor. The inner rotor of the pump is driven by a pin in the drive shaft, and carries the outer rotor around in mesh, pumping oil to the accumulator piston. Accumulator—A single accumulator, consisting of a piston and spring, acts as a relief valve for the oil pump and provides a reservoir of high pressure oil for quick servo movement. Oil is pumped to the accumulator by the governor pump, with pressure increasing as the accumulator spring is compressed. When the pressure builds to the predetermined level, oil is released back to sump through relief ports in the piston wall. Power Piston—The power piston is attached to the output shaft by a link and lever assembly. The power piston is designed with a large area on the bottom and a small area on top (differential piston). A small pressure increase on the large area of the piston will move the piston up, causing the output shaft to rotate in the “increase” direction. The piston can move down only when oil under the piston is released to sump. Oil to or from the bottom of the power piston is regulated by the ballhead pilot valve and ballhead pilot valve bushing. Pilot Valve System The pilot valve system consists of two components, the ballhead pilot valve (rotating) bushing, and the ballhead pilot valve plunger. The bushing is rotated relative to the pilot valve plunger to reduce friction between the two parts. The control land of the pilot valve plunger regulates the flow of control oil through the control ports of the ballhead bushing. When the pilot valve plunger is lowered, high pressure oil moves through the control port of the bushing, to the bottom side of the power piston, and the piston moves up. When the pilot valve plunger is raised, the oil from the bottom of the power piston is released to sump, and the higher pressure on top of the piston moves the piston down. When the prime mover is running at steady state, the control land of the pilot valve plunger covers the porting in the ballhead bushing and the power piston does not move. The movement of the pilot valve plunger is controlled by the ballhead assembly. Ballhead Assembly The ballhead system consists of a ballhead, fly-weights, speeder spring, thrust bearing, and speeder plug. The ballhead, as part of the pilot valve bushing, is rotated by the drive coupling and drive shaft. As the ballhead rotates, the centrifugal force causes the flyweights to pivot outward. At the same time, the speeder spring is forcing the thrust bearing down on the flyweight toes opposing the centrifugal force of the flyweights. Pushing down on the speeder plug increases the downward pressure on the speeder spring, and the governor speed setting is increased. The prime mover then runs at a higher speed to produce a higher centrifugal force on the flyweights to overcome the speeder spring force and rebalance the system.