Are Amtrak engines diesel?

Amtrak operates a fleet of passenger train rolling stock consisting of predominantly custom-built equipment. The active fleet includes some 240 diesel locomotives, 66 electric locomotives, 1,408 passenger cars and 20 Acela Express high-speed trainsets.



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Amtrak operates diesel, electric, and dual-mode (diesel or electric) locomotives.

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No modern train uses a diesel engine to power their wheels directly. They're used as generators to power electric motors. So the only difference boils down to where the electricity comes from. And even in the most train-friendly countries like France and Japan, huge sections of the network are not electrified.

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Engines may be left idling to maintain important safety related functions such as maintaining engine temperature, air pressure for the brake system, the integrity of the starting systems, the electrical system and providing heating or cooling to a train's crew and/or passengers.

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Yes, diesel engines are always running in case you didn't know! We don't see any other type of train doing this, but only diesel locomotives leave their engine running always. In case you haven't noticed, diesel trains are never turned off. They are always left running.

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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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It all comes down to efficiency; electric motors are far more efficient than internal combustion engines when it comes to creating mechanical energy, and this is particularly relevant with trains.

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In 1925, General Electric, in partnership with Ingersoll-Rand and the American Locomotive Company (ALCO), created the first commercially successful diesel-electric locomotive, identified as the No. 1000.

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Outside the Northeast Corridor and a route in Pennsylvania from Philadelphia to Harrisburg, all Amtrak trains are powered by diesel locomotives, which emit greenhouse gases and fine particulate matter that can cause health problems.

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There are many reasons for this. There is limited service between cities (Amtrak says it runs 300 trains with about 87,000 passengers per day), freight is often prioritized over passenger service in the U.S., and trains and facilities are often outdated.

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If the train is heading in the direction in which the locomotive end of the train is facing, this is considered 'pulling'. If the train is heading in the opposite direction, this is considered 'pushing' and the motorman or engine driver is located in the alternative cab.

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A sandbox is a container on most locomotives, multiple units and trams that holds sand, which is dropped on the rail in front of the driving wheels in wet and slippery conditions and on steep grades to improve traction.

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And the main reason for that is safety. Locomotive engineers are required to honk every now and then, which is written down in the regulations called the Final Rule on the Use of Locomotive Horns.

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And the main reason for that is safety. Locomotive engineers are required to honk every now and then, which is written down in the regulations called the Final Rule on the Use of Locomotive Horns.

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Reduced traffic: During the nighttime, there is generally less road traffic and fewer other trains on the tracks. This allows trains to move more efficiently and with fewer delays, as they encounter fewer obstacles and can maintain a consistent speed.

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Diesel engines, which are commonly used in trains and buses, release a combination of gases and particulates into the air. These emissions include nitrogen oxides (NOx), sulfur dioxide (SO2), and particulate matter (PM), which can produce a strong, acrid smell.

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Compared to flying, using the train emits on average six times less GHG emissions.

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However, as an energy researcher, my decision was motivated by the fact that trains, whether for cargo or passengers, pollute much less than airplanes, sometimes by as much as 73%, and they are more easily electrified than planes.

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