{"id":39329,"date":"2026-03-21T00:58:24","date_gmt":"2026-03-20T22:58:24","guid":{"rendered":"https:\/\/diagnozabam.ro\/sfaturi\/?p=39329"},"modified":"2026-03-21T00:58:24","modified_gmt":"2026-03-20T22:58:24","slug":"combustion-phasing-in-diesel-engines","status":"publish","type":"post","link":"https:\/\/diagnozabam.ro\/sfaturi\/blog\/combustion-phasing-in-diesel-engines\/","title":{"rendered":"Combustion Phasing in Diesel Engines"},"content":{"rendered":"<h2 data-start=\"370\" data-end=\"400\">What Is Combustion Phasing?<\/h2>\n<p data-start=\"402\" data-end=\"519\"><strong data-start=\"402\" data-end=\"424\">Combustion phasing<\/strong> refers to the exact <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/p0016-code-timing-chain-or-sensor-fault\/\">crankshaft<\/a> angle at which peak cylinder pressure occurs during combustion.<\/p>\n<p data-start=\"521\" data-end=\"537\">In simple terms:<\/p>\n<p data-start=\"539\" data-end=\"622\">It defines <strong data-start=\"550\" data-end=\"558\">when<\/strong> the maximum pressure happens relative to Top Dead Center (TDC).<\/p>\n<p data-start=\"624\" data-end=\"728\">For optimal efficiency in diesel engines, peak pressure should occur slightly <strong data-start=\"702\" data-end=\"715\">after TDC<\/strong>, not before.<\/p>\n<p data-start=\"730\" data-end=\"734\">Why?<\/p>\n<p data-start=\"736\" data-end=\"824\">Because maximum mechanical advantage happens when the piston is already moving downward.<\/p>\n<hr data-start=\"826\" data-end=\"829\" \/>\n<h2 data-start=\"831\" data-end=\"864\">Why Combustion Phasing Matters<\/h2>\n<p data-start=\"866\" data-end=\"901\">Correct combustion phasing ensures:<\/p>\n<ul data-start=\"903\" data-end=\"1044\">\n<li data-start=\"903\" data-end=\"928\">\n<p data-start=\"905\" data-end=\"928\">Maximum torque output<\/p>\n<\/li>\n<li data-start=\"929\" data-end=\"958\">\n<p data-start=\"931\" data-end=\"958\">Higher <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/cpu-overheating-causes-and-fix-guide\/\">thermal<\/a> efficiency<\/p>\n<\/li>\n<li data-start=\"959\" data-end=\"985\">\n<p data-start=\"961\" data-end=\"985\">Lower fuel consumption<\/p>\n<\/li>\n<li data-start=\"986\" data-end=\"1014\">\n<p data-start=\"988\" data-end=\"1014\">Controlled pressure rise<\/p>\n<\/li>\n<li data-start=\"1015\" data-end=\"1044\">\n<p data-start=\"1017\" data-end=\"1044\">Reduced mechanical stress<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1046\" data-end=\"1071\">Incorrect phasing causes:<\/p>\n<ul data-start=\"1073\" data-end=\"1167\">\n<li data-start=\"1073\" data-end=\"1087\">\n<p data-start=\"1075\" data-end=\"1087\">Power loss<\/p>\n<\/li>\n<li data-start=\"1088\" data-end=\"1110\">\n<p data-start=\"1090\" data-end=\"1110\">Increased fuel use<\/p>\n<\/li>\n<li data-start=\"1111\" data-end=\"1135\">\n<p data-start=\"1113\" data-end=\"1135\">Higher <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/car-egr-cooler-role-how-it-works\/\">NOx<\/a> <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/wet-vs-dry-timing-belt-what-drivers-must-know\/\">emissions<\/a><\/p>\n<\/li>\n<li data-start=\"1136\" data-end=\"1167\">\n<p data-start=\"1138\" data-end=\"1167\">Excessive cylinder pressure<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1169\" data-end=\"1235\">Modern diesel engines are extremely sensitive to phasing accuracy.<\/p>\n<hr data-start=\"1237\" data-end=\"1240\" \/>\n<h2 data-start=\"1242\" data-end=\"1288\">The Link Between Ignition Delay and Phasing<\/h2>\n<p data-start=\"1290\" data-end=\"1313\">From previous articles:<\/p>\n<p data-start=\"1315\" data-end=\"1376\">Ignition delay = time between injection and combustion start.<\/p>\n<p data-start=\"1378\" data-end=\"1399\">If ignition delay is:<\/p>\n<ul data-start=\"1401\" data-end=\"1533\">\n<li data-start=\"1401\" data-end=\"1461\">\n<p data-start=\"1403\" data-end=\"1461\">Too long \u2192 combustion starts late \u2192 peak pressure shifts<\/p>\n<\/li>\n<li data-start=\"1462\" data-end=\"1533\">\n<p data-start=\"1464\" data-end=\"1533\">Too short \u2192 combustion starts too early \u2192 pressure spike before TDC<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1535\" data-end=\"1569\">Both situations reduce efficiency.<\/p>\n<p data-start=\"1571\" data-end=\"1728\">European diesel under <strong data-start=\"1593\" data-end=\"1634\"><span class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"><span class=\"whitespace-normal\">EN 590<\/span><\/span><\/strong> (minimum cetane 51) helps stabilize ignition delay, supporting consistent combustion phasing.<\/p>\n<hr data-start=\"1730\" data-end=\"1733\" \/>\n<h2 data-start=\"1735\" data-end=\"1776\">Injection Timing vs Combustion Phasing<\/h2>\n<p data-start=\"1778\" data-end=\"1820\">Injection <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/%e2%9a%99%ef%b8%8f-timing-belt-or-chain-interval-the-real-maintenance-guide\/\">timing<\/a> is controlled by the ECU.<\/p>\n<p data-start=\"1822\" data-end=\"1830\">However:<\/p>\n<p data-start=\"1832\" data-end=\"1869\">Injection <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/%e2%9a%99%ef%b8%8f-timing-belt-or-chain-interval-the-real-maintenance-guide\/\">timing<\/a> \u2260 combustion <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/%e2%9a%99%ef%b8%8f-timing-belt-or-chain-interval-the-real-maintenance-guide\/\">timing<\/a>.<\/p>\n<p data-start=\"1871\" data-end=\"1903\">There is always a delay between:<\/p>\n<ul data-start=\"1905\" data-end=\"1971\">\n<li data-start=\"1905\" data-end=\"1924\">\n<p data-start=\"1907\" data-end=\"1924\">Injection event<\/p>\n<\/li>\n<li data-start=\"1925\" data-end=\"1946\">\n<p data-start=\"1927\" data-end=\"1946\">Chemical ignition<\/p>\n<\/li>\n<li data-start=\"1947\" data-end=\"1971\">\n<p data-start=\"1949\" data-end=\"1971\">Pressure development<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1973\" data-end=\"2033\">That delay must be predicted and compensated electronically.<\/p>\n<p data-start=\"2035\" data-end=\"2080\">Modern common rail systems constantly adjust:<\/p>\n<ul data-start=\"2082\" data-end=\"2157\">\n<li data-start=\"2082\" data-end=\"2110\">\n<p data-start=\"2084\" data-end=\"2110\">Start of injection (SOI)<\/p>\n<\/li>\n<li data-start=\"2111\" data-end=\"2128\">\n<p data-start=\"2113\" data-end=\"2128\">Rail pressure<\/p>\n<\/li>\n<li data-start=\"2129\" data-end=\"2157\">\n<p data-start=\"2131\" data-end=\"2157\">Pilot injection quantity<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2159\" data-end=\"2217\">To keep peak pressure within the ideal crank angle window.<\/p>\n<hr data-start=\"2219\" data-end=\"2222\" \/>\n<h2 data-start=\"2224\" data-end=\"2265\">Ideal Pressure Curve in Diesel Engines<\/h2>\n<p data-start=\"2267\" data-end=\"2306\">An optimal diesel pressure curve shows:<\/p>\n<p data-start=\"2308\" data-end=\"2408\">1\ufe0f\u20e3 Smooth pressure increase<br data-start=\"2336\" data-end=\"2339\" \/>2\ufe0f\u20e3 Peak pressure shortly after TDC<br data-start=\"2374\" data-end=\"2377\" \/>3\ufe0f\u20e3 Controlled pressure decay<\/p>\n<p data-start=\"2410\" data-end=\"2434\">If peak pressure occurs:<\/p>\n<ul data-start=\"2436\" data-end=\"2533\">\n<li data-start=\"2436\" data-end=\"2489\">\n<p data-start=\"2438\" data-end=\"2489\">Before TDC \u2192 harsh combustion + mechanical stress<\/p>\n<\/li>\n<li data-start=\"2490\" data-end=\"2533\">\n<p data-start=\"2492\" data-end=\"2533\">Too late \u2192 incomplete energy conversion<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2535\" data-end=\"2608\">Combustion phasing directly affects brake mean effective pressure (BMEP).<\/p>\n<hr data-start=\"2610\" data-end=\"2613\" \/>\n<h2 data-start=\"2615\" data-end=\"2650\">Combustion Phasing and Emissions<\/h2>\n<p data-start=\"2652\" data-end=\"2690\">Phasing strongly influences <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/wet-vs-dry-timing-belt-what-drivers-must-know\/\">emissions<\/a>:<\/p>\n<h3 data-start=\"2692\" data-end=\"2731\">Early Combustion (advanced phasing)<\/h3>\n<ul data-start=\"2732\" data-end=\"2777\">\n<li data-start=\"2732\" data-end=\"2759\">\n<p data-start=\"2734\" data-end=\"2759\">Higher peak temperature<\/p>\n<\/li>\n<li data-start=\"2760\" data-end=\"2777\">\n<p data-start=\"2762\" data-end=\"2777\">Increased <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/car-egr-cooler-role-how-it-works\/\">NOx<\/a><\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"2779\" data-end=\"2817\">Late Combustion (retarded phasing)<\/h3>\n<ul data-start=\"2818\" data-end=\"2874\">\n<li data-start=\"2818\" data-end=\"2844\">\n<p data-start=\"2820\" data-end=\"2844\">Lower peak temperature<\/p>\n<\/li>\n<li data-start=\"2845\" data-end=\"2874\">\n<p data-start=\"2847\" data-end=\"2874\">Higher particulate matter<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2876\" data-end=\"2943\">Engine calibration balances <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/car-egr-cooler-role-how-it-works\/\">NOx<\/a> and soot through injection control.<\/p>\n<p data-start=\"2945\" data-end=\"2998\">This balancing act is critical for Euro 6 compliance.<\/p>\n<hr data-start=\"3000\" data-end=\"3003\" \/>\n<h2 data-start=\"3005\" data-end=\"3042\">How Modern Engines Control Phasing<\/h2>\n<p data-start=\"3044\" data-end=\"3070\">Modern diesel engines use:<\/p>\n<ul data-start=\"3072\" data-end=\"3194\">\n<li data-start=\"3072\" data-end=\"3101\">\n<p data-start=\"3074\" data-end=\"3101\">Multiple injection events<\/p>\n<\/li>\n<li data-start=\"3102\" data-end=\"3137\">\n<p data-start=\"3104\" data-end=\"3137\">Variable geometry turbochargers<\/p>\n<\/li>\n<li data-start=\"3138\" data-end=\"3153\">\n<p data-start=\"3140\" data-end=\"3153\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/car-egr-cooler-role-how-it-works\/\">EGR<\/a> control<\/p>\n<\/li>\n<li data-start=\"3154\" data-end=\"3194\">\n<p data-start=\"3156\" data-end=\"3194\">Real-time cylinder pressure modeling<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3196\" data-end=\"3227\">Some advanced engines even use:<\/p>\n<ul data-start=\"3229\" data-end=\"3314\">\n<li data-start=\"3229\" data-end=\"3263\">\n<p data-start=\"3231\" data-end=\"3263\">Closed-loop combustion control<\/p>\n<\/li>\n<li data-start=\"3264\" data-end=\"3279\">\n<p data-start=\"3266\" data-end=\"3279\">Ion sensing<\/p>\n<\/li>\n<li data-start=\"3280\" data-end=\"3314\">\n<p data-start=\"3282\" data-end=\"3314\">Pressure sensors in glow plugs<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3316\" data-end=\"3403\">This allows adaptive phasing correction based on fuel quality and operating conditions.<\/p>\n<hr data-start=\"3405\" data-end=\"3408\" \/>\n<h2 data-start=\"3410\" data-end=\"3447\">Fuel Quality and Phasing Stability<\/h2>\n<p data-start=\"3449\" data-end=\"3493\">Fuel with inconsistent <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/cetane-number-explained-why-51-is-critical\/\">cetane number<\/a> causes:<\/p>\n<ul data-start=\"3495\" data-end=\"3594\">\n<li data-start=\"3495\" data-end=\"3522\">\n<p data-start=\"3497\" data-end=\"3522\">Variable ignition delay<\/p>\n<\/li>\n<li data-start=\"3523\" data-end=\"3543\">\n<p data-start=\"3525\" data-end=\"3543\">Unstable phasing<\/p>\n<\/li>\n<li data-start=\"3544\" data-end=\"3567\">\n<p data-start=\"3546\" data-end=\"3567\">Increased <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/wet-vs-dry-timing-belt-what-drivers-must-know\/\">emissions<\/a><\/p>\n<\/li>\n<li data-start=\"3568\" data-end=\"3594\">\n<p data-start=\"3570\" data-end=\"3594\">Rough engine operation<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3596\" data-end=\"3657\">Stable combustion phasing requires consistent fuel chemistry.<\/p>\n<p data-start=\"3659\" data-end=\"3707\">That is why standardized diesel quality matters.<\/p>\n<hr data-start=\"3709\" data-end=\"3712\" \/>\n<h2 data-start=\"3714\" data-end=\"3754\">What Happens If Phasing Is Incorrect?<\/h2>\n<p data-start=\"3756\" data-end=\"3807\">Long-term incorrect combustion phasing can lead to:<\/p>\n<ul data-start=\"3809\" data-end=\"3941\">\n<li data-start=\"3809\" data-end=\"3845\">\n<p data-start=\"3811\" data-end=\"3845\">Higher piston crown temperatures<\/p>\n<\/li>\n<li data-start=\"3846\" data-end=\"3872\">\n<p data-start=\"3848\" data-end=\"3872\">Increased bearing load<\/p>\n<\/li>\n<li data-start=\"3873\" data-end=\"3896\">\n<p data-start=\"3875\" data-end=\"3896\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/car-consumes-too-much-fuel-10-real-causes\/\">Turbocharger<\/a> stress<\/p>\n<\/li>\n<li data-start=\"3897\" data-end=\"3913\">\n<p data-start=\"3899\" data-end=\"3913\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/%e2%9a%99%ef%b8%8f-dpf-removal-the-whole-truth-and-real-risks\/\">DPF<\/a> overload<\/p>\n<\/li>\n<li data-start=\"3914\" data-end=\"3941\">\n<p data-start=\"3916\" data-end=\"3941\">Reduced engine lifespan<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"3943\" data-end=\"4000\">Modern ECU strategies continuously adapt to prevent this.<\/p>\n<hr data-start=\"4002\" data-end=\"4005\" \/>\n<h2 data-start=\"4007\" data-end=\"4023\">Key Takeaways<\/h2>\n<ul data-start=\"4025\" data-end=\"4309\">\n<li data-start=\"4025\" data-end=\"4080\">\n<p data-start=\"4027\" data-end=\"4080\">Combustion phasing defines when peak pressure occurs.<\/p>\n<\/li>\n<li data-start=\"4081\" data-end=\"4125\">\n<p data-start=\"4083\" data-end=\"4125\">Ideal peak pressure is slightly after TDC.<\/p>\n<\/li>\n<li data-start=\"4126\" data-end=\"4171\">\n<p data-start=\"4128\" data-end=\"4171\">Ignition delay directly influences phasing.<\/p>\n<\/li>\n<li data-start=\"4172\" data-end=\"4226\">\n<p data-start=\"4174\" data-end=\"4226\">Injection <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/%e2%9a%99%ef%b8%8f-timing-belt-or-chain-interval-the-real-maintenance-guide\/\">timing<\/a> must compensate for fuel chemistry.<\/p>\n<\/li>\n<li data-start=\"4227\" data-end=\"4309\">\n<p data-start=\"4229\" data-end=\"4309\"><a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/wet-vs-dry-timing-belt-what-drivers-must-know\/\">Modern engines<\/a> actively control combustion phasing for efficiency and <a href=\"https:\/\/diagnozabam.ro\/sfaturi\/blog\/wet-vs-dry-timing-belt-what-drivers-must-know\/\">emissions<\/a>.<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>What Is Combustion Phasing? Combustion phasing refers to the exact crankshaft angle at which peak cylinder pressure occurs during combustion. In simple terms: It defines when the maximum pressure happens relative to Top Dead Center (TDC). For optimal efficiency in diesel engines, peak pressure should occur slightly after TDC, not before. Why? Because maximum mechanical [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":39326,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[18606],"tags":[45373,45377,45375,45379,45381,45355],"class_list":["post-39329","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-combustion-phasing-diesel","tag-common-rail-control","tag-diesel-injection-timing","tag-diesel-pressure-curve","tag-euro-6-emissions","tag-ignition-delay-diesel"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Combustion Phasing in Diesel Engines - Diagnoza BAM<\/title>\n<meta name=\"description\" content=\"What is combustion phasing in diesel engines? 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In diesel combustion, reducing one emission often increases the other. NOx (Nitrogen Oxides) form at high combustion temperatures. Soot (particulate matter) forms in fuel-rich, low-oxygen zones. This creates a fundamental engineering compromise: Higher temperature \u2192 less soot, more NOx Lower temperature \u2192 less\u2026","rel":"","context":"\u00cen \u201eNews\u201d","block_context":{"text":"News","link":"https:\/\/diagnozabam.ro\/sfaturi\/category\/news\/"},"img":{"alt_text":"featured image 10224","src":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/03\/featured-image-10224.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/03\/featured-image-10224.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/03\/featured-image-10224.webp?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":39325,"url":"https:\/\/diagnozabam.ro\/sfaturi\/blog\/ignition-delay-in-diesel-engines-explained\/","url_meta":{"origin":39329,"position":1},"title":"Ignition Delay in Diesel Engines Explained","author":"Bejenaru Alexandru Ionut","date":"20 martie 2026","format":false,"excerpt":"What Is Ignition Delay in Diesel Engines? Ignition delay is the time interval between: The start of fuel injectionand The actual beginning of combustion. In compression-ignition engines, fuel is injected into highly compressed hot air. However, combustion does not start instantly. 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Diesel knock is the sharp metallic sound produced during abnormal combustion in a compression-ignition engine. Unlike gasoline knock (detonation), diesel knock is mainly caused by excessive ignition delay. It occurs when: Fuel is injected. Ignition is delayed. Too much fuel accumulates. Sudden combustion causes a rapid\u2026","rel":"","context":"\u00cen \u201eNews\u201d","block_context":{"text":"News","link":"https:\/\/diagnozabam.ro\/sfaturi\/category\/news\/"},"img":{"alt_text":"Damage due to abnormal combustion","src":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/03\/damage-due-to-abnormal-combustion.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/03\/damage-due-to-abnormal-combustion.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/03\/damage-due-to-abnormal-combustion.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/03\/damage-due-to-abnormal-combustion.webp?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":39367,"url":"https:\/\/diagnozabam.ro\/sfaturi\/blog\/us-vs-european-diesel-fuel-the-real-difference\/","url_meta":{"origin":39329,"position":4},"title":"US vs European Diesel Fuel: The Real Difference","author":"Bejenaru Alexandru Ionut","date":"4 martie 2026","format":false,"excerpt":"Most drivers assume diesel fuel is the same worldwide. It is not. One of the biggest chemical differences between US vs European diesel fuel is the cetane number, and that single parameter changes how the engine behaves during combustion. For modern diesel engines \u2014 especially high-pressure common rail systems \u2014\u2026","rel":"","context":"\u00cen \u201eNews\u201d","block_context":{"text":"News","link":"https:\/\/diagnozabam.ro\/sfaturi\/category\/news\/"},"img":{"alt_text":"ce sa faci daca ai alimentat cu benzina in loc de motorina","src":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2024\/05\/ce-sa-faci-daca-ai-alimentat-cu-benzina-in-loc-de-motorina.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2024\/05\/ce-sa-faci-daca-ai-alimentat-cu-benzina-in-loc-de-motorina.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2024\/05\/ce-sa-faci-daca-ai-alimentat-cu-benzina-in-loc-de-motorina.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2024\/05\/ce-sa-faci-daca-ai-alimentat-cu-benzina-in-loc-de-motorina.webp?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2024\/05\/ce-sa-faci-daca-ai-alimentat-cu-benzina-in-loc-de-motorina.webp?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":39310,"url":"https:\/\/diagnozabam.ro\/sfaturi\/blog\/cetane-number-explained-why-51-is-critical\/","url_meta":{"origin":39329,"position":5},"title":"Cetane Number Explained: Why 51 Is Critical","author":"Bejenaru Alexandru Ionut","date":"19 martie 2026","format":false,"excerpt":"The cetane number (CN) measures the auto-ignition quality of diesel fuel used in compression-ignition engines. It indicates how quickly the fuel ignites after being injected into the combustion chamber. In simple terms: Higher cetane number \u2192 shorter ignition delay Lower cetane number \u2192 longer ignition delay Ignition delay is the\u2026","rel":"","context":"\u00cen \u201eNews\u201d","block_context":{"text":"News","link":"https:\/\/diagnozabam.ro\/sfaturi\/category\/news\/"},"img":{"alt_text":"Close up of fuel injectors and common rail in a diesel engine","src":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/02\/close-up-of-fuel-injectors-and-common-rail-in-a-diesel-engine.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/02\/close-up-of-fuel-injectors-and-common-rail-in-a-diesel-engine.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/02\/close-up-of-fuel-injectors-and-common-rail-in-a-diesel-engine.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/02\/close-up-of-fuel-injectors-and-common-rail-in-a-diesel-engine.webp?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/02\/close-up-of-fuel-injectors-and-common-rail-in-a-diesel-engine.webp?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/diagnozabam.ro\/sfaturi\/wp-content\/uploads\/2026\/02\/close-up-of-fuel-injectors-and-common-rail-in-a-diesel-engine.webp?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"jetpack_likes_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pf97go-ael","jetpack_sharing_enabled":true,"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts\/39329","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/comments?post=39329"}],"version-history":[{"count":1,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts\/39329\/revisions"}],"predecessor-version":[{"id":39330,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/posts\/39329\/revisions\/39330"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/media\/39326"}],"wp:attachment":[{"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/media?parent=39329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/categories?post=39329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/diagnozabam.ro\/sfaturi\/wp-json\/wp\/v2\/tags?post=39329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}