{"id":46788,"date":"2025-12-23T23:17:57","date_gmt":"2025-12-23T23:17:57","guid":{"rendered":"https:\/\/maritimehub.co.uk\/?p=46788"},"modified":"2026-01-13T21:03:36","modified_gmt":"2026-01-13T21:03:36","slug":"two-stroke-marine-engines","status":"publish","type":"post","link":"https:\/\/maritimehub.co.uk\/two-stroke-marine-engines\/","title":{"rendered":"Two-Stroke Marine Engines"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\"><strong>Principles, Operation, Design &amp; Marine Application<\/strong><\/h1>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Introduction<\/h2>\n\n\n\n<p>Two-stroke engines form the <strong>backbone of deep-sea propulsion<\/strong>.<\/p>\n\n\n\n<p>From large container vessels and tankers to bulk carriers and LNG ships, slow-speed two-stroke diesel engines are trusted because they deliver:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High efficiency<\/li>\n\n\n\n<li>Massive torque at low speed<\/li>\n\n\n\n<li>Continuous, reliable operation<\/li>\n\n\n\n<li>Excellent fuel economy for long voyages<\/li>\n<\/ul>\n\n\n\n<p>This page explains <strong>how two-stroke marine engines work<\/strong>, <em>why they are designed the way they are<\/em>, and <em>how engineers should think about them in operation<\/em>.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\ud83d\udccc <strong>Scope note<\/strong><br>This page explains <strong>principles, design logic, and operation<\/strong>.<br>Component overhauls, faults, tuning, emissions, and calculations are covered in their <strong>dedicated system pages<\/strong>.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Contents<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li id=\"what-defines-two-stroke\"><a href=\"#what-defines-two-stroke\" data-type=\"post\" data-id=\"46788\">What Defines a Two-Stroke Marine Engine?<\/a><\/li>\n\n\n\n<li><a>Why Two-Stroke Engines Dominate Main Propulsion<\/a><\/li>\n\n\n\n<li><a>The Two-Stroke Operating Cycle (Step by Step)<\/a><\/li>\n\n\n\n<li><a>Scavenging: The Heart of the Two-Stroke Engine<\/a><\/li>\n\n\n\n<li><a>Air Supply &amp; Turbocharging<\/a><\/li>\n\n\n\n<li><a>Fuel Injection &amp; Combustion<\/a><\/li>\n\n\n\n<li><a>Lubrication Philosophy in Two-Stroke Engines<\/a><\/li>\n\n\n\n<li><a>Cooling &amp; Thermal Control<\/a><\/li>\n\n\n\n<li><a>Mechanical Design Features<\/a><\/li>\n\n\n\n<li><a>Control, Monitoring &amp; Protection<\/a><\/li>\n\n\n\n<li><a>Operational Characteristics at Sea<\/a><\/li>\n\n\n\n<li><a>Common Misconceptions About Two-Stroke Engines<\/a><\/li>\n\n\n\n<li><a>How This Page Connects to the Rest of the Engine Room<\/a><\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. What Defines a Two-Stroke Marine Engine?<\/h2>\n\n\n\n<p>A two-stroke marine engine completes a <strong>full operating cycle in one crankshaft revolution<\/strong>.<\/p>\n\n\n\n<p>This means:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>One power stroke <strong>every revolution<\/strong><\/li>\n\n\n\n<li>No separate intake or exhaust strokes<\/li>\n\n\n\n<li>Gas exchange happens <strong>through ports in the cylinder liner<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Key defining characteristics:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Slow rotational speed (typically 60\u2013120 RPM)<\/li>\n\n\n\n<li>Large bore, long stroke<\/li>\n\n\n\n<li>Direct coupling to the propeller<\/li>\n\n\n\n<li>Uniflow scavenging<\/li>\n\n\n\n<li>Continuous-duty operation<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u2699\ufe0f <em>\u201cTwo-stroke\u201d refers to the cycle \u2014 not simplicity.<\/em><\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. Why Two-Stroke Engines Dominate Main Propulsion<\/h2>\n\n\n\n<p>Two-stroke engines are chosen not because they are old \u2014 but because they are <strong>optimal for marine propulsion<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Key advantages<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>High thermal efficiency<\/strong><\/li>\n\n\n\n<li><strong>Excellent fuel economy<\/strong><\/li>\n\n\n\n<li><strong>High torque at low RPM<\/strong><\/li>\n\n\n\n<li><strong>No reduction gearbox required<\/strong><\/li>\n\n\n\n<li><strong>Simpler power transmission<\/strong><\/li>\n\n\n\n<li><strong>Better propeller efficiency<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Marine reality<\/h3>\n\n\n\n<p>Ships require:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Continuous thrust<\/li>\n\n\n\n<li>Predictable response<\/li>\n\n\n\n<li>Long maintenance intervals<\/li>\n\n\n\n<li>Operation far from shore support<\/li>\n<\/ul>\n\n\n\n<p>Two-stroke engines are built around these realities.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. The Two-Stroke Operating Cycle (Step by Step)<\/h2>\n\n\n\n<p>Unlike four-stroke engines, all major events occur within <strong>one piston movement up and down<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Upward Stroke (Compression)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Exhaust valve closes<\/li>\n\n\n\n<li>Fresh air is trapped in the cylinder<\/li>\n\n\n\n<li>Air is compressed to high pressure and temperature<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Fuel Injection &amp; Combustion<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fuel is injected near TDC<\/li>\n\n\n\n<li>Self-ignition occurs<\/li>\n\n\n\n<li>Combustion pushes piston downward<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Downward Stroke (Power + Gas Exchange)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Exhaust valve opens<\/li>\n\n\n\n<li>Exhaust gases begin to leave<\/li>\n\n\n\n<li>Scavenge ports open<\/li>\n\n\n\n<li>Fresh air enters, pushing exhaust out<\/li>\n\n\n\n<li>Cycle repeats<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/3a7137fa-31fd-436f-8e61-0c517abcef19-1024x683.png\" alt=\"\" class=\"wp-image-46789\" style=\"width:738px;height:auto\" srcset=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/3a7137fa-31fd-436f-8e61-0c517abcef19-1024x683.png 1024w, https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/3a7137fa-31fd-436f-8e61-0c517abcef19-300x200.png 300w, https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/3a7137fa-31fd-436f-8e61-0c517abcef19-768x512.png 768w, https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/3a7137fa-31fd-436f-8e61-0c517abcef19.png 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. Scavenging: The Heart of the Two-Stroke Engine<\/h2>\n\n\n\n<p>Scavenging is the process of:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Removing exhaust gases<\/li>\n\n\n\n<li>Replacing them with fresh air<\/li>\n\n\n\n<li>Without mixing excessively<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Uniflow scavenging (marine standard)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Air enters through liner ports<\/li>\n\n\n\n<li>Exhaust exits via cylinder head valve<\/li>\n\n\n\n<li>Gas flow is one-directional<\/li>\n<\/ul>\n\n\n\n<p>Benefits:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Efficient gas exchange<\/li>\n\n\n\n<li>Better combustion<\/li>\n\n\n\n<li>Reduced thermal stress<\/li>\n\n\n\n<li>Improved emissions performance<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\ud83d\udccc Scavenging faults affect <strong>power, temperatures, fuel consumption, and emissions<\/strong>.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. Air Supply &amp; Turbocharging<\/h2>\n\n\n\n<p>Two-stroke engines <strong>cannot draw in air naturally<\/strong>.<\/p>\n\n\n\n<p>They rely entirely on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Turbochargers<\/li>\n\n\n\n<li>Scavenge air receivers<\/li>\n\n\n\n<li>Auxiliary blowers (low load)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Why turbocharging is essential<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Provides scavenge air pressure<\/li>\n\n\n\n<li>Ensures cylinder filling<\/li>\n\n\n\n<li>Maintains combustion stability<\/li>\n<\/ul>\n\n\n\n<p>At low loads:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Auxiliary blowers support airflow<\/li>\n\n\n\n<li>Turbocharger efficiency is reduced<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"590\" height=\"443\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/490968728_1232256038901289_6987388519543474492_n.jpg\" alt=\"\" class=\"wp-image-46791\" style=\"width:475px;height:auto\" srcset=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/490968728_1232256038901289_6987388519543474492_n.jpg 590w, https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/490968728_1232256038901289_6987388519543474492_n-300x225.jpg 300w\" sizes=\"auto, (max-width: 590px) 100vw, 590px\" \/><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"547\" height=\"257\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/38313_2011_105_Fig5_HTML.png\" alt=\"\" class=\"wp-image-46790\" srcset=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/38313_2011_105_Fig5_HTML.png 547w, https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/38313_2011_105_Fig5_HTML-300x141.png 300w\" sizes=\"auto, (max-width: 547px) 100vw, 547px\" \/><\/figure>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6. Fuel Injection &amp; Combustion<\/h2>\n\n\n\n<p>Two-stroke engines use <strong>high-pressure, timed fuel injection<\/strong>.<\/p>\n\n\n\n<p>Key principles:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Injection occurs over a short crank angle<\/li>\n\n\n\n<li>Fuel atomisation is critical<\/li>\n\n\n\n<li>Combustion must be controlled, not explosive<\/li>\n<\/ul>\n\n\n\n<p>Combustion quality depends on:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Injection timing<\/li>\n\n\n\n<li>Fuel quality<\/li>\n\n\n\n<li>Scavenge air temperature<\/li>\n\n\n\n<li>Compression pressure<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u26a0\ufe0f Poor combustion leads to:<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>High exhaust temperatures<\/li>\n\n\n\n<li>Piston crown damage<\/li>\n\n\n\n<li>Liner wear<\/li>\n\n\n\n<li>Emissions issues<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7. Lubrication Philosophy in Two-Stroke Engines<\/h2>\n\n\n\n<p>Unlike four-stroke engines, lubrication is <strong>divided by function<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Main lubrication systems<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>System oil (bearings, crankcase)<\/li>\n\n\n\n<li>Cylinder oil (liner &amp; rings)<\/li>\n<\/ul>\n\n\n\n<p>Cylinder oil:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Is injected directly<\/li>\n\n\n\n<li>Is partially consumed<\/li>\n\n\n\n<li>Neutralises sulphur acids<\/li>\n\n\n\n<li>Protects liner surfaces<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\ud83d\udccc Cylinder lubrication strategy is critical and fuel-dependent.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8. Cooling &amp; Thermal Control<\/h2>\n\n\n\n<p>Two-stroke engines operate under <strong>extreme thermal loads<\/strong>.<\/p>\n\n\n\n<p>Cooling is applied to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cylinder liners<\/li>\n\n\n\n<li>Cylinder covers<\/li>\n\n\n\n<li>Exhaust valves<\/li>\n\n\n\n<li>Pistons<\/li>\n<\/ul>\n\n\n\n<p>Design priorities:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Prevent thermal cracking<\/li>\n\n\n\n<li>Control metal temperatures<\/li>\n\n\n\n<li>Maintain material strength<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"873\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/cylinder-liner-1-1.webp\" alt=\"\" class=\"wp-image-46792\" style=\"width:487px;height:auto\" srcset=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/cylinder-liner-1-1.webp 1024w, https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/cylinder-liner-1-1-300x256.webp 300w, https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/cylinder-liner-1-1-768x655.webp 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">9. Mechanical Design Features<\/h2>\n\n\n\n<p>Two-stroke engines are <strong>built for strength and longevity<\/strong>.<\/p>\n\n\n\n<p>Typical features:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Crosshead design<\/li>\n\n\n\n<li>Long connecting rods<\/li>\n\n\n\n<li>Separate crankcase and cylinder spaces<\/li>\n\n\n\n<li>Heavy bedplate and frame box<\/li>\n<\/ul>\n\n\n\n<p>Benefits:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reduced side thrust<\/li>\n\n\n\n<li>Improved liner life<\/li>\n\n\n\n<li>Easier maintenance access<\/li>\n\n\n\n<li>Better oil control<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">10. Control, Monitoring &amp; Protection<\/h2>\n\n\n\n<p>Modern two-stroke engines use:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Electronic governors<\/li>\n\n\n\n<li>Cylinder pressure monitoring<\/li>\n\n\n\n<li>Exhaust temperature monitoring<\/li>\n\n\n\n<li>Safety shutdowns<\/li>\n<\/ul>\n\n\n\n<p>Critical monitored parameters:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Exhaust temperatures<\/li>\n\n\n\n<li>Scavenge air pressure<\/li>\n\n\n\n<li>Lubrication flow<\/li>\n\n\n\n<li>Bearing temperatures<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u26a0\ufe0f Alarms indicate <strong>deviation from normal<\/strong>, not failure itself.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">11. Operational Characteristics at Sea<\/h2>\n\n\n\n<p>Two-stroke engines:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Respond slowly to load changes<\/li>\n\n\n\n<li>Prefer steady operation<\/li>\n\n\n\n<li>Require careful manoeuvring control<\/li>\n\n\n\n<li>Are sensitive to fuel quality<\/li>\n<\/ul>\n\n\n\n<p>Engineers must understand:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Load limits<\/li>\n\n\n\n<li>Thermal stabilisation time<\/li>\n\n\n\n<li>Slow steaming effects<\/li>\n\n\n\n<li>Minimum load constraints<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">12. Common Misconceptions About Two-Stroke Engines<\/h2>\n\n\n\n<p>\u274c \u201cTwo-stroke engines are simpler\u201d<br>\u2714 They are <em>conceptually simpler but mechanically massive<\/em><\/p>\n\n\n\n<p>\u274c \u201cThey are outdated technology\u201d<br>\u2714 They are <strong>continuously evolving<\/strong><\/p>\n\n\n\n<p>\u274c \u201cThey are inefficient\u201d<br>\u2714 They are among the <strong>most efficient heat engines ever built<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">13. How This Page Connects to the Rest of the Engine Room<\/h2>\n\n\n\n<p>This page is the <strong>conceptual anchor<\/strong> for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Fuel systems<\/li>\n\n\n\n<li>Lubrication systems<\/li>\n\n\n\n<li>Starting &amp; reversing<\/li>\n\n\n\n<li>Performance &amp; tuning<\/li>\n\n\n\n<li>Emissions control<\/li>\n\n\n\n<li>Fault diagnosis<\/li>\n<\/ul>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\ud83d\udccc If a problem exists on a two-stroke engine, it <strong>always traces back to principles explained here<\/strong>.<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Tags<\/h3>\n\n\n\n<p><code>two-stroke marine engine<\/code> \u00b7 <code>slow speed diesel<\/code> \u00b7 <code>main engine propulsion<\/code> \u00b7 <code>marine engineering training<\/code> \u00b7 <code>engine room fundamentals<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Next logical steps (recommended)<\/h3>\n\n\n\n<p>From here, users should move to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Fuel Injection Systems<\/strong><\/li>\n\n\n\n<li><strong>Scavenging &amp; Air Systems<\/strong><\/li>\n\n\n\n<li><strong>Starting &amp; Reversing<\/strong><\/li>\n\n\n\n<li><strong>Performance &amp; Tuning<\/strong><\/li>\n\n\n\n<li><strong>Common Two-Stroke Faults<\/strong><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Principles, Operation, Design &amp; Marine Application Introduction Two-stroke engines form the backbone of deep-sea propulsion. From large container vessels and tankers to bulk carriers and LNG ships, slow-speed two-stroke diesel engines are trusted because they deliver: This page explains how two-stroke marine engines work, why they are designed the way they are, and how engineers [&hellip;]<\/p>\n","protected":false},"author":199,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"fifu_image_url":"","fifu_image_alt":"","c2c-post-author-ip":"","footnotes":""},"categories":[43,10,7,1,8],"tags":[],"class_list":["post-46788","post","type-post","status-publish","format-standard","hentry","category-aux-machinery","category-bridge","category-engine-room","category-latest","category-mechanical"],"acf":[],"_links":{"self":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/posts\/46788","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/users\/199"}],"replies":[{"embeddable":true,"href":"https:\/\/maritimehub.co.uk\/?rest_route=%2Fwp%2Fv2%2Fcomments&post=46788"}],"version-history":[{"count":5,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/posts\/46788\/revisions"}],"predecessor-version":[{"id":46797,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/posts\/46788\/revisions\/46797"}],"wp:attachment":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=%2Fwp%2Fv2%2Fmedia&parent=46788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/maritimehub.co.uk\/?rest_route=%2Fwp%2Fv2%2Fcategories&post=46788"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/maritimehub.co.uk\/?rest_route=%2Fwp%2Fv2%2Ftags&post=46788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}