Editing Locomotive (section)

=== Internal combustion ===
[[File:Die Daimler Motor-Draisine erstmals im Sommer 1887 zwischen Esslingen und Kirchheim-Teck erprobt.jpg|thumb|The 1887 Daimler draisine]]
[[File:Teplovoz Eel2 (2).jpg|thumb|The first useful diesel locomotive (a diesel–electric) for long distances, the [[Russian locomotive class E el-2|SŽD Eel2]], 1924 in [[Kyiv]]]]
{{main|Internal combustion locomotive}}
Internal combustion locomotives use an [[internal combustion engine]], connected to the [[driving wheel]]s by a transmission. They typically keep the engine running at a near-constant speed whether the locomotive is stationary or moving. Internal combustion locomotives are categorised by their fuel type and sub-categorised by their transmission type.

The first internal combustion rail vehicle was a [[kerosene]]-powered [[draisine]] built by [[Gottlieb Daimler]] in 1887,<ref>{{cite web |first=Thomas |last=Winkler |url=https://www.technischesmuseum.at/objekt/daimler-waggonet |title=Daimler Motorwagen |access-date=12 April 2019 |archive-date=1 December 2020 |archive-url=https://web.archive.org/web/20201201150238/https://www.technischesmuseum.at/objekt/daimler-waggonet |url-status=live }}</ref> but this was not technically a locomotive as it carried a payload.

The earliest [[gasoline]] locomotive in the western United States was built by the [[Best Manufacturing Company]] in 1891 for [[Alum Rock Park#San Jose & Alum Rock Park Railway|San Jose and Alum Rock Railroad]]. It was only a limited success and was returned to Best in 1892.<ref>{{cite magazine |first=Dan |last=Quine |author-link=Dan Quine |title=The Railroad Equipment of the Yellow Aster Gold Mine Part 1: The Locomotives |magazine=[[Narrow Gauge and Short Line Gazette]] |date=November 2024 |volume=50 |issue=5}}</ref>

The first commercially successful [[petrol]] locomotive in the United Kingdom was a [[#Petrol–mechanical|petrol–mechanical locomotive]] built by the [[Maudslay Motor Company]] in 1902, for the Deptford Cattle Market in [[London]]. It was an 80&nbsp;hp locomotive using a three-cylinder vertical petrol engine, with a two speed mechanical gearbox.

In 1903, the Hungarian [[Weitzer railmotor]] was the world's first [[petrol-electric|petrol electric]] locomotive.

==== Diesel ====
{{main|Diesel locomotive}}
Diesel locomotives are powered by [[diesel engine]]s. In the early days of diesel propulsion development, various transmission systems were employed with varying degrees of success, with electric transmission proving to be the most popular. In 1914, [[Hermann Lemp]], a [[General Electric]] electrical engineer, developed and patented a reliable [[direct current]] electrical control system (subsequent improvements were also patented by Lemp).<ref>Lemp, Hermann. US Patent No. 1,154,785, filed 8 April 1914, and issued 28 September 1915. ''Accessed via Google Patent Search at: [http://www.google.com/patents?vid=USPAT1154785&id=UhpBAAAAEBAJ&dq=1154785 US Patent #1,154,785] {{Webarchive|url=https://web.archive.org/web/20121222010126/http://www.google.com/patents?vid=USPAT1154785&id=UhpBAAAAEBAJ&dq=1154785 |date=22 December 2012 }} on 8 February 2007.''</ref>  Lemp's design used a single lever to control both engine and generator in a coordinated fashion, and was the [[prototype]] for all [[Diesel locomotive#Diesel–electric|diesel–electric locomotive]] control. In 1917–18, GE produced three experimental diesel–electric locomotives using Lemp's control design.<ref name="SDSG">{{harvnb|Pinkepank|1973|pp=139–141}}</ref> In 1924, a diesel–electric locomotive ([[Russian locomotive class E el-2|E<sup>el</sup>2]] original number Юэ 001/Yu-e 001) started operations. It had been designed by a team led by [[Yury Lomonosov]] and built 1923–1924 by [[Maschinenfabrik Esslingen]] in Germany. It had five driving axles (1'E1'). After several test rides, it hauled trains for almost three decades from 1925 to 1954.<ref>{{Cite web|url=http://izmerov.narod.ru/first/thefirst3.html|title=The first russian diesel locos|website=izmerov.narod.ru|access-date=2 December 2017|archive-date=30 April 2021|archive-url=https://web.archive.org/web/20210430082115/http://izmerov.narod.ru/first/thefirst3.html|url-status=live}}</ref>

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