7.2 - Fuel Quality
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Practice Questions
Test your understanding with targeted questions
What does octane number measure?
💡 Hint: Think of SI engines and the sounds they make.
What is cetane number associated with?
💡 Hint: Consider which type of engine diesel belongs to.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main purpose of the octane number in fuel?
💡 Hint: Consider which type of engine the octane number is important for.
True or False: Higher cetane numbers in diesel fuel lead to delayed ignition.
💡 Hint: Think about why quick ignition matters in diesel engines.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Analyze how changing octane levels in a spark ignition engine affects the environmental emissions produced annually. Provide a detailed effect on NOx and CO levels.
💡 Hint: Consider how combustion efficiency correlates with emission generation.
A fleet of trucks uses diesel fuel with a cetane number of 40. Propose how using a higher quality fuel with a cetane number of 55 might impact their emissions and performance. Support your argument with specific comparisons.
💡 Hint: Relate cetane number directly to combustion timing and pollutant creation.
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