{"id":2079,"date":"2015-05-09T11:51:38","date_gmt":"2015-05-09T11:51:38","guid":{"rendered":"http:\/\/blending.globecore.com\/?p=2079"},"modified":"2017-07-26T12:52:58","modified_gmt":"2017-07-26T12:52:58","slug":"how-to-define-the-cetane-number","status":"publish","type":"post","link":"https:\/\/blending.globecore.com\/how-to-define-the-cetane-number","title":{"rendered":"How to Define the Cetane Number?"},"content":{"rendered":"<p>A test engine is used to measure the cetane number of diesel fuel.\u00a0 When using other mehods of measurig the cetane number, the result will depend on the diesel fuel composition.\u00a0 The motor method provides the exact results for the fuels with any fractional composition.\u00a0 The various express analyzers require the recalibration when changing from one type of oil product to another, which is very difficult and time consuming.<\/p>\n<p>In general, three approaches are used to identify an accurate value of the cetane number: (1) flare coincidence; (2) ignition lag; and (3) the critical rate of compression.\u00a0 The \u2018method of flare coincidence has gained a widespread acceptance.\u00a0 It is realized by such types of equipment as IT9-3, It9-3M, or ITD-69 which have single-cycle four stroke engines.\u00a0 When testing, the shaft speed should be maintained at the level of 900\u00b110 revolutions per minute (rpm).<\/p>\n<p>The cetane number of diesel fuel is largely determined by the hydrocarbon composition.\u00a0 The cetane number of the benzene hydrocarbons is the\u00a0 lowest while that of the paraffin hydrocarbons is the highest.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A test engine is used to measure the cetane number of diesel fuel.\u00a0 When using other mehods of measurig the cetane number, the result will depend on the diesel fuel composition.\u00a0 The motor method provides the exact results for the fuels with any fractional composition.\u00a0 The various express analyzers require the recalibration when changing from<a class=\"cg-read-more\" href=\"https:\/\/blending.globecore.com\/how-to-define-the-cetane-number\" target=\"_blank\">Read More <\/a><\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[185,184],"class_list":["post-2079","post","type-post","status-publish","format-standard","hentry","category-fuel-blending-articles","tag-cetane-number","tag-define"],"language":"en","acf":[],"_links":{"self":[{"href":"https:\/\/blending.globecore.com\/en\/wp-json\/wp\/v2\/posts\/2079","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blending.globecore.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blending.globecore.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blending.globecore.com\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/blending.globecore.com\/en\/wp-json\/wp\/v2\/comments?post=2079"}],"version-history":[{"count":0,"href":"https:\/\/blending.globecore.com\/en\/wp-json\/wp\/v2\/posts\/2079\/revisions"}],"wp:attachment":[{"href":"https:\/\/blending.globecore.com\/en\/wp-json\/wp\/v2\/media?parent=2079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blending.globecore.com\/en\/wp-json\/wp\/v2\/categories?post=2079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blending.globecore.com\/en\/wp-json\/wp\/v2\/tags?post=2079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}