The river push boat to which you are...

Question 1 / 2066636eef28f7522a1c51f6c1

Question 1 of 2066636eef28f7522a1c51f6c1

The river push boat to which you are assigned has diesel generators fitted with fuel injectors with the operating principle as shown in the illustration. In figure "B" which plunger rotation position corresponds to the engine running under no load at idle RPM? Illustration MO-0144

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🔍 Key Concepts

• How effective stroke of the plunger changes as it is rotated from position 1 to 4 in Figure B • Relationship between effective stroke length and the amount of fuel injected per cycle • What fuel setting is required for an engine running at no load, idle RPM compared to full power or shutdown

💭 Think About

• Compare the effective stroke shown in each of the four plunger rotation positions and rank them from maximum fuel to minimum fuel delivery • Think about which position would correspond to full-load fuel, which to fuel shutoff, and which would logically fall at the very low but still-running fuel quantity needed for idle • Ask yourself: at idle with no load, does the engine need the longest, shortest, or an intermediate effective stroke, and which figure visually matches that

✅ Before You Answer

• Verify in Figure B which position has the longest effective stroke (maximum fuel) and which has the shortest but not zero effective stroke • Confirm which rotation position appears to align the plunger port so that fuel is almost immediately spilled (very small effective stroke) versus significantly delayed (large effective stroke) • Make sure the choice you select corresponds to a setting that would allow the engine to just keep running without stalling, not full power and not complete cutoff

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Question 1 of 20

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Question 1 / 2066636eef28f7522a1c51f6c1

Question 1 of 2066636eef28f7522a1c51f6c1

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Question 1 of 20

66636eef28f7522a1c51f6c1

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🔍 Key Concepts

💭 Think About

✅ Before You Answer

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