Heavy fuel oils generally have an upper...

Question 1 / 270705eccefa2bacbc34ba4d4779b

Question 1 of 270705eccefa2bacbc34ba4d4779b

Heavy fuel oils generally have an upper average ash content of 0.1% by weight. Which of the following conditions could be expected if the ash content increases above this amount?

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Question 1 of 27070

Heavy fuel oils generally have an upper average ash content of 0.1% by weight. Which of the following conditions could be expected if the ash content increases above this amount?

🔍 Key Concepts

• Ash content in heavy fuel oil and what it represents • Effect of abrasive contaminants (like ash) on engine components • Relationship between fuel quality and wear in combustion/exhaust spaces vs. bearings/liners/MEP

💭 Think About

• Which engine parts are directly exposed to the combustion products and solid particles in the exhaust gas stream? • Would an increase in non-combustible, abrasive particles be more likely to polish/smooth surfaces, erode them, or increase pressure produced by combustion? • Think about where ash deposits and hot, dirty gas flow are most concentrated along the engine gas path.

✅ Before You Answer

• Identify which option involves components that are directly in the path of hot combustion gases and ash-laden exhaust. • Decide whether increased ash would realistically raise mean effective pressure (MEP) or instead increase wear or deposits. • Consider whether bearing wear and liner glazing are typically caused by lack of lubrication/over-lubrication vs. hard abrasive particles in the fuel.

Question 1 of 27070

Heavy fuel oils generally have an upper average ash content of 0.1% by weight. Which of the following conditions could be expected if the ash content increases above this amount?

Excessive bearing wear

Increased exhaust valve wear

Glazing of the cylinder liners

Increased MEP

Question 1 / 270705eccefa2bacbc34ba4d4779b

Question 1 of 270705eccefa2bacbc34ba4d4779b

Heavy fuel oils generally have an upper average ash content of 0.1% by weight. Which of the following conditions could be expected if the ash content increases above this amount?

Back

Question 1 of 27070

Heavy fuel oils generally have an upper average ash content of 0.1% by weight. Which of the following conditions could be expected if the ash content increases above this amount?