Why did trains go from steam to diesel?

The diesel engine drives an alternator, which produces electricity to run electric motors mounted on the locomotive's axles. The internal combustion engine was a dramatic improvement in efficiency over the steam locomotive, making substantial savings possible in maintenance and the elimination of widespread facilities.



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In rail transport, dieselisation refers to the replacement of the steam locomotive or electric locomotive with the diesel locomotive (usually the diesel-electric locomotive), a process which began in the 1930s and is now substantially complete around the world.

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The last Victory ships had already been equipped with marine diesels, and diesel engines superseded both steamers and windjammers soon after World War Two. Most steamers were used up to their maximum economical life span, and no commercial ocean-going steamers with reciprocating engines have been built since the 1960s.

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Diesel locomotives were generally more powerful than the steam locomotives that came before them. They were also less polluting, and they did not have to stop to pick up water. Diesel-powered trains are used worldwide, especially on less busy routes where it would be too expensive to electrify the lines.

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In Britain the Great Western Railway introduced diesel railcars in the 1930s and the first British mainline diesel locomotive was built by the London, Midland and Scottish Railway in 1947 but, unlike elsewhere in the developed world, the transition away from steam was delayed during the early postwar years.

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The last steam locomotive built for mainline British Railways was 92220 Evening Star, which was completed in March 1960. The last steam-hauled service trains on the British Railways network ran on 11 August 1968, but the use of steam locomotives in British industry continued into the 1980s.

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Steam engines CAN be more powerful than diesels. Steam engine have been built with 7000–8000 hp. They tend to be very heavy and very complicated with multiple driving axle articulated trucks.

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A train engine requires about a hundred litres of fuel to get it started. So it wouldn't be economical if the engine is stopped and started frequently. This apart, if the engine is stopped, the moving parts' lubrication will also come to a halt.

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ton for ton a steam locomotive can and does pull more tons at higher speeds than a diesel locomotive can. The H.P. of a diesel is less effective at faster speeds because more electricity is needed to keep the traction motors spinning at the higher speeds.

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Goodbye diesel: what does the phase-out mean for UK rail innovation? The UK Government has announced that diesel-only trains will be phased out by 2040. Currently, 29% of the UK's fleet is diesel and the move has been received positively by campaigners. But what does the phase-out involve?

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The life expectancy of diesel-electric and electric locomotives is expected to be similar—about 25 years. Both types of motive power are subject to technological obsolescence.

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Steam locomotives are no longer used to transport passengers or products because electric and diesel locomotives are faster, more efficient, and easier to maintain. The locomotives that are still running are a piece of history dating back to the 1800's that really put into perspective just how far we've come!

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Diesel engines are much more efficient than steam engines, but the combustion in the steam engine's firebox can be more carefully controlled and, so, possibly produce less of the types of pollution caused by imperfect combustion.

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There are currently over 400 former BR steam locomotives preserved in Britain (not including many additional former industrial examples). Most have been captured in action by Geograph contributors and I have attempted to illustrate this great heritage using their input.

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The last meter-gauge and narrow-gauge steam locomotives in regular service were retired in 2000. After being withdrawn from service, most steam locomotives were scrapped, though some have been preserved in various railway museums. The only steam locomotives remaining in regular service are on India's heritage lines.

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The Flying Scotsman is 100 years old It was only when put on show at the British Empire Exhibition in London in 1924 that she was given the number 4427 and named after the route running between London and Edinburgh - The Flying Scotsman. Though she's known for her iconic green colour, that hasn't always been the case.

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But when the price of oil started to fall in the 1960s, and so-called 'dieselisation' began, it marked the beginning of the end for steam. Diesel engines were faster, easier to maintain, and cleaner.

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The world's first diesel-powered locomotive was operated in the summer of 1912 on the same line from Winterthur, but was not a commercial success.

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There are five lines in the UK which allow for high-speed rail travel. On four out of five lines, the maximum speed is 125mph, while the purpose-built HS1 line allows for speeds of 186mph.

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