The main engines on your fishing industry...

Question 1 / 2066636eef28f7522a1c51fe30

Question 1 of 2066636eef28f7522a1c51fe30

The main engines on your fishing industry factory ship are fitted with speed control governors of the type shown in the illustration. What is the purpose of the compensation system, consisting of the buffer cylinder, buffer piston, buffer springs, and compensation needle valve? Illustration MO-0158

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🔍 Key Concepts

• Study how the buffer piston, buffer spring, and compensation needle valve are connected between the pilot valve and the power piston in the governor diagram • Review what engine hunting (unstable oscillation of speed) is and how governors are designed to smooth or damp rapid movements • Compare which governor parts actually sense speed (flyweights) versus which parts only modify or delay the governor’s response

💭 Think About

• In the illustration, trace the oil flow from the pilot valve to the power piston. How does the compensation system change the speed or smoothness of that movement? • Which component in the governor directly detects changes in engine rpm, and is that the same component group labeled as the compensation system? • If a governor reacted too quickly and overshot the desired speed on every change in load, what kind of behavior would you see, and which choice best describes a system designed to correct that?

✅ Before You Answer

• Verify which part of the governor is labeled as sensing actual engine speed (look near the flyweights and speeder spring) • Check whether the compensation system has any mechanical or hydraulic link to the bridge speed setting or maximum speed stop • Ask whether the compensation system’s main effect is to measure speed, to limit maximum speed, or to stabilize/dampen the governor’s response to speed changes

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Question 1 of 20

It senses the engine speed setting delivered from the bridge

It limits engine speed to a maximum value to prevent over speeding

It prevents engine hunting when responding to load changes

It senses the actual engine speed of rotation

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Question 1 / 2066636eef28f7522a1c51fe30

Question 1 of 2066636eef28f7522a1c51fe30

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Question 1 of 20

66636eef28f7522a1c51fe30

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

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