{"id":6278,"date":"2024-08-29T14:58:44","date_gmt":"2024-08-29T14:58:44","guid":{"rendered":"https:\/\/svestudy.com\/?page_id=6278"},"modified":"2025-05-12T19:16:47","modified_gmt":"2025-05-12T19:16:47","slug":"mde-unit-1-q1-answer","status":"publish","type":"page","link":"https:\/\/svestudy.com\/?page_id=6278","title":{"rendered":"MDE Unit 1 Q1 &#8211; Answer"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"61\" src=\"https:\/\/svestudy.com\/wp-content\/uploads\/2024\/08\/image-169-1024x61.png\" alt=\"\" class=\"wp-image-5881\" srcset=\"https:\/\/svestudy.com\/wp-content\/uploads\/2024\/08\/image-169-1024x61.png 1024w, https:\/\/svestudy.com\/wp-content\/uploads\/2024\/08\/image-169-300x18.png 300w, https:\/\/svestudy.com\/wp-content\/uploads\/2024\/08\/image-169-768x46.png 768w, https:\/\/svestudy.com\/wp-content\/uploads\/2024\/08\/image-169.png 1041w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Intake Stroke (Suction):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\">The piston moves downward from Top Dead Center (TDC) towards Bottom Dead Center (BDC).<\/li>\n\n\n\n<li class=\"\">The intake valve opens, allowing an air-fuel mixture (gasoline engines) or fresh air (diesel engines) to be drawn into the cylinder by the increasing volume created by the descending piston.<\/li>\n\n\n\n<li class=\"\">The exhaust valve remains closed throughout the intake stroke.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. Compression Stroke:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\">The piston moves upward from BDC towards TDC.<\/li>\n\n\n\n<li class=\"\">Both the intake and exhaust valves are closed.<\/li>\n\n\n\n<li class=\"\">The trapped air-fuel mixture (or air in diesel engines) is compressed by the rising piston, significantly increasing its pressure and temperature.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. Combustion Stroke (Power Stroke):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\">Shortly before TDC on the compression stroke, a spark plug ignites the compressed air-fuel mixture in gasoline engines. In diesel engines, the high pressure and temperature cause the injected fuel to spontaneously combust.<\/li>\n\n\n\n<li class=\"\">The combustion process rapidly expands the hot gases, forcing the piston down with significant force, creating the power output of the engine.<\/li>\n\n\n\n<li class=\"\">Both the intake and exhaust valves remain closed throughout the combustion stroke.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. Exhaust Stroke:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\">The piston moves upward from BDC towards TDC.<\/li>\n\n\n\n<li class=\"\">The exhaust valve opens.<\/li>\n\n\n\n<li class=\"\">The burned exhaust gases are pushed out of the cylinder by the rising piston.<\/li>\n\n\n\n<li class=\"\">The intake valve remains closed throughout the exhaust stroke.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Repeating Cycle:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\">Once the exhaust stroke is complete, the piston reaches TDC again, and the cycle repeats, continuously drawing in fresh air\/fuel mixture, compressing it, combusting it for power generation, and expelling the exhaust gases.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Key Points:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\">The crankshaft is connected to the piston by a connecting rod and converts the reciprocating motion of the piston into rotary motion for driving the wheels or other applications.<\/li>\n\n\n\n<li class=\"\">The four strokes occur in two complete revolutions of the crankshaft.<\/li>\n\n\n\n<li class=\"\">Precise timing of valve opening and closing is crucial for efficient engine operation and is controlled by a camshaft or other valve actuation mechanisms.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>1. Intake Stroke (Suction): 2. Compression Stroke: 3. Combustion Stroke (Power Stroke): 4. Exhaust Stroke: Repeating Cycle: Key Points:<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"templates\/template-full-width.php","meta":{"nf_dc_page":"","footnotes":""},"class_list":["post-6278","page","type-page","status-publish","hentry"],"featured_image_src":null,"_links":{"self":[{"href":"https:\/\/svestudy.com\/index.php?rest_route=\/wp\/v2\/pages\/6278","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/svestudy.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/svestudy.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/svestudy.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/svestudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6278"}],"version-history":[{"count":3,"href":"https:\/\/svestudy.com\/index.php?rest_route=\/wp\/v2\/pages\/6278\/revisions"}],"predecessor-version":[{"id":6294,"href":"https:\/\/svestudy.com\/index.php?rest_route=\/wp\/v2\/pages\/6278\/revisions\/6294"}],"wp:attachment":[{"href":"https:\/\/svestudy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}