{"id":173,"date":"2026-07-15T09:32:43","date_gmt":"2026-07-15T01:32:43","guid":{"rendered":"https:\/\/themebb.com\/en\/archives\/173"},"modified":"2026-07-15T09:32:43","modified_gmt":"2026-07-15T01:32:43","slug":"screw-type-air-compressor-main-engine-speed-ratio-analysis-of-transmission-relationship-between-yin-and-yang-rotor","status":"publish","type":"post","link":"https:\/\/themebb.com\/en\/archives\/173","title":{"rendered":"Screw Type Air Compressor Main Engine Speed Ratio: Analysis of Transmission Relationship between Yin and Yang Rotor"},"content":{"rendered":"<h2>What is Screw Air Compressor main engine speed ratio?<\/h2>\n<p>The speed ratio of the main engine, also known as the transmission ratio, refers to the speed ratio of the positive rotor and the negative rotor in the Screw Air Compressor, and is one of the core parameters in the compressor design. It directly determines the meshing characteristics, volumetric efficiency, noise level and overall life.<\/p>\n<h2>Relationship between speed ratio and Yin-Yang rotor structure<\/h2>\n<p>typical dry Screw Air Compressor main engine adopts asymmetric tooth profile, and the common speed ratio is 4:3 (male rotor 4 teeth correspond to female rotor 3 teeth) or 3:2; Fuel injection screw is mostly 5:6 or 4:6. The ratio is determined by rotor tooth number, length of line of action and leakage Triangle Optimization.<\/p>\n<h2>Impact of speed ratio on performance<\/h2>\n<ul>\n<li><strong>volume flow stability<\/strong>: reasonable speed ratio can reduce airflow fluctuation and improve output stability;<\/li>\n<li><strong>energy efficiency performance<\/strong>: affect the balance between adiabatic efficiency and mechanical loss;<\/li>\n<li><strong>vibration and noise<\/strong>: improper speed ratio is easy to stimulate resonance frequency and aggravate host vibration.<\/li>\n<\/ul>\n<p>Therefore, in the selection and customization of Screw Air Compressor main engine, the speed ratio needs to be determined comprehensively in combination with working conditions, lubrication methods and material processes, and common values cannot be simply applied.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The speed ratio of the main engine is a key parameter in the design of Screw Air Compressor. It refers to the speed ratio between the positive rotor and the negative rotor, which directly affects the volume efficiency, noise, vibration and service life. This paper analyzes its definition, typical values and its influence on the meshing performance of Yin and Yang rotor, helping to understand the core design logic of compressor main engine.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","zob_sync_key":"zsync_2bb67d77fe98858eaefb7565","zob_sync_source_post_type":"post","zob_sync_lang":"en-US","zob_sync_source_url":"https:\/\/themebb.com\/blog\/archives\/285.html","zob_sync_key_version":"v1","zob_sync_source_blog_id":"1","zob_sync_source_post_id":"285"},"categories":[23],"tags":[],"class_list":["post-173","post","type-post","status-publish","format-standard","hentry","category-haha"],"_links":{"self":[{"href":"https:\/\/themebb.com\/en\/wp-json\/wp\/v2\/posts\/173","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/themebb.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/themebb.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/themebb.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/themebb.com\/en\/wp-json\/wp\/v2\/comments?post=173"}],"version-history":[{"count":0,"href":"https:\/\/themebb.com\/en\/wp-json\/wp\/v2\/posts\/173\/revisions"}],"wp:attachment":[{"href":"https:\/\/themebb.com\/en\/wp-json\/wp\/v2\/media?parent=173"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/themebb.com\/en\/wp-json\/wp\/v2\/categories?post=173"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/themebb.com\/en\/wp-json\/wp\/v2\/tags?post=173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}