{"id":5727,"date":"2025-07-26T13:42:17","date_gmt":"2025-07-26T08:12:17","guid":{"rendered":"https:\/\/study.madeeasy.in\/?p=5727"},"modified":"2025-07-27T21:53:40","modified_gmt":"2025-07-27T16:23:40","slug":"ackermann-steering-mechanism","status":"publish","type":"post","link":"https:\/\/www.madeeasy.in\/study\/me\/theory-of-machines\/ackermann-steering-mechanism","title":{"rendered":"Ackermann Steering Mechanism"},"content":{"rendered":"

The Ackermann steering gear has only turning pairs. Fig. (a) shows the steering gear for straight drive. The turning pairs are : AK, KL, LB and AB. The two short arms AK and BL are of equal length and are connected by pin joints with front wheel axle AB at A and B respectively. AC and BD are the stub axles so that CAK and DBL form bell crank levers. ABLK form a four-bar linkage. KL is the track rod.<\/p>\n

\"<\/p>\n

Determination of angle \u03b1<\/h2>\n

Consider the Ackermann steering gear, as shown in figure (b) taking a right turn. The instantaneous centre I lies on a line parallel to the rear axis at a distance of approximately 0.3 l above the rear axis. It may be seen that the whole mechanism of the Ackermann steering gear is on the back of the front wheels. From figure (c), we have,<\/p>\n

Projection of arc K\u2032K on AB = Projection of arc L\u2032L on AB<\/p>\n

or K1K1\u2032 =L1L1\u2032<\/p>\n

or AK[sin \u03b1 \u2013 sin (\u03b1 \u2013 \u03c6)] =BL[sin(\u03b1 + \u03b8) \u2013 sin \u03b1]<\/p>\n

Now AK=BL<\/p>\n

so, sin \u03b1 \u2013 sin(\u03b1 \u2013 \u03c6) =sin (\u03b1 + \u03b8) \u2013 sin \u03b1<\/p>\n

or, sin \u03b1 \u2013 sin \u03b1 cos \u03c6 + cos \u03b1 sin \u03c6=sin \u03b1 cos \u03b8 + cos \u03b1 sin \u03b8 \u2013 sin \u03b1<\/p>\n

or, sin \u03b1(2 \u2013 cos \u03c6 \u2013 cos \u03b8) =cos \u03b1(sin \u03b8 \u2013 sin \u03c6)<\/p>\n

or tan \u03b1= sin sin \u03c6 \/2 cos cos\u03b8 \u00a0…(3.15)<\/p>\n

The value of \u03b8 and \u03c6 are known for correct steering. Hence the value of \u03b1 can be determined from Equation\u00a03.15.<\/p>\n","protected":false},"excerpt":{"rendered":"

The Ackermann steering gear has only turning pairs. Fig. (a) shows the steering gear for straight drive. The turning pairs<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[287,10],"tags":[1687],"class_list":["post-5727","post","type-post","status-publish","format-standard","hentry","category-theory-of-machines","category-me","tag-ackermann-steering"],"_links":{"self":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/5727","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/comments?post=5727"}],"version-history":[{"count":0,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/5727\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/media?parent=5727"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/categories?post=5727"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/tags?post=5727"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}