{"id":5878,"date":"2017-02-08T13:03:41","date_gmt":"2017-02-08T13:03:41","guid":{"rendered":"http:\/\/nchasia.com\/vn-vn\/?p=5878"},"modified":"2025-07-02T16:42:06","modified_gmt":"2025-07-02T08:42:06","slug":"difference-between-gasoline-and-diesel-engines","status":"publish","type":"post","link":"https:\/\/www.nchasia.com\/vn-vn\/difference-between-gasoline-and-diesel-engines\/","title":{"rendered":"Difference between gasoline and diesel engines"},"content":{"rendered":"

The diesel engine was invented by Rudolf Diesel while attending engineering school in Germany. Rudolf was surprised how inefficient gasoline and steam engines were. The design of the diesel engine was patented in 1892.<\/strong><\/p>\n

Both diesel and gasoline engines convert chemical energy from\u00a0fuel\u00a0into mechanical energy through a series of explosions. The way these explosions happen is the major difference between these two engines.<\/p>\n

In a gasoline engine, the explosion process is:<\/strong><\/p>\n

    \n
  1. Intake stroke \u2013 fuel is mixed with air<\/li>\n
  2. Compression stroke \u2013 piston goes up, mixture of fuel and air is compressed<\/li>\n
  3. Ignition stroke \u2013 fuel\/air is ignited through the use of a spark plug<\/li>\n
  4. Exhaust stroke \u2013 piston goes up, pushes exhaust through the exhaust valve<\/li>\n<\/ol>\n

    In a diesel engine, the explosion process is:<\/strong><\/p>\n

      \n
    1. Intake stroke \u2013 intake valve opens, air in, piston goes down<\/li>\n
    2. Compression stroke \u2013 piston goes up, air compressed (heated in excess of 540\u00b0C)<\/li>\n
    3. Combustion stroke \u2013 fuel is injected (right time), ignition, piston goes down<\/li>\n
    4. Exhaust \u2013 piston goes up, pushes exhaust through the exhaust valve<\/li>\n<\/ol>\n

      \"\"<\/p>\n

      Diesel engines have no spark plug. They need high compression ratios to generate the high temperatures required for fuel auto ignition (the higher the cetane number, the better the ignition).<\/p>\n

      Compression is much higher with a diesel engine (14:1 to 25:1) than a gasoline engine (8:1 to 12:1). Gasoline engines use lower compression ratios to avoid fuel auto ignition (engine knock). Higher compression ratios lead to higher thermal efficiencies and better fuel economies.<\/p>\n

      What else?<\/strong><\/p>\n

      Read about\u00a0Common Problems with diesel fuel<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

      The diesel engine was invented by Rudolf Diesel while attending engineering school in Germany. Rudolf was surprised how inefficient gasoline […]<\/p>\n","protected":false},"author":1,"featured_media":5554,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[17,1],"tags":[703,738,714],"class_list":["post-5878","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lubricants","category-all","tag-articles","tag-fuel-additives","tag-lubricants","article_type-articles"],"acf":[],"yoast_head":"\nDifference between gasoline and diesel engines - NCH Vietnam<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.nchasia.com\/vn-vn\/difference-between-gasoline-and-diesel-engines\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Difference between gasoline and diesel engines - NCH Vietnam\" \/>\n<meta property=\"og:description\" content=\"The diesel engine was invented by Rudolf Diesel while attending engineering school in Germany. 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