【Daily Question】Petrochemical Deep Processing Version 2018.01.11
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Participation: Reward of 3~5 Wealth points； Correct answer: Reward of 10 wealth points ； Note: This post is valid for 48 hours. True or False: The higher the cetane number of diesel, the better. ( ) Answer: False. Your participation is the greatest support for our work. Giving roses to others leaves a pleasant fragrance in one’s own hands. https://bbs.hcbbs.com/static/image/hrline/1.gif https://bbs.hcbbs.com/static/image/hrline/2.gif Note: The answers will be released automatically after two days. ““My Device, My Home” – Large-scale Original Photo Sharing Event (Part 2): https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1868167&extra=page%3D1 Petrochemical Deep Processing Section [Daily Question] Summary Post: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1496481
The answer is incorrect; a high cetane number may result in an unsatisfactory freezing point
Wrong. Because once the diesel cetane number exceeds 50, further increases have little effect on reducing the ignition delay period ； Furthermore, diesel with a too high cetane number has a larger molecular weight, which affects its flowability at low temperatures, as well as its atomization and evaporation properties. This leads to incomplete combustion, resulting in reduced engine power, increased fuel consumption, and black smoke from the exhaust.
True or False: The higher the cetane number of diesel, the better. (False)