Editing Diesel engine (section)

===The first diesel engine===
Diesel sought out firms and factories that would build his engine. With the help of [[Moritz Schröter]] and {{interlanguage link|Max Friedrich Gutermuth{{!}}Max Gutermuth|de|Max Gutermuth}},<ref name="Sass_1962_395" /> he succeeded in convincing both [[Krupp]] in Essen and the [[MAN SE|Maschinenfabrik Augsburg]].<ref name="Sittauer_1990_74" /> Contracts were signed in April 1893,<ref name="Sass_1962_559" /> and in early summer 1893, Diesel's first prototype engine was built in [[Augsburg]]. On 10 August 1893, the first ignition took place, the fuel used was petrol. In winter 1893/1894, Diesel redesigned the existing engine, and by 18 January 1894, his mechanics had converted it into the second prototype.<ref name="Diesel_1913_17" /> During January that year, an [[air-blast injection]] system was added to the engine's cylinder head and tested.<ref name="Sass_1962_444" /> [[Friedrich Sass]] argues that, it can be presumed that Diesel copied the concept of air-blast injection from [[George B. Brayton]],<ref name="Sass_1962_414" /> albeit that Diesel substantially improved the system.<ref name="Sass_1962_415" /> On 17 February 1894, the redesigned engine ran for 88 revolutions – one minute;<ref name="Diesel_1913_22" /> with this news, Maschinenfabrik Augsburg's stock rose by 30%, indicative of the tremendous anticipated demands for a more efficient engine.<ref name="Moon_1974" /> On 26 June 1895, the engine achieved an effective efficiency of 16.6% and had a fuel consumption of 519&nbsp;g·kW<sup>−1</sup>·h<sup>−1</sup>.
<ref name="Tschöke_2018_6" /> However, despite proving the concept, the engine caused problems,<ref name="Sass_1962_462" /> and Diesel could not achieve any substantial progress.<ref name="Sass_1962_463" /> Therefore, Krupp considered rescinding the contract they had made with Diesel.<ref name="Sass_1962_464" /> Diesel was forced to improve the design of his engine and rushed to construct a third prototype engine. Between 8 November and 20 December 1895, the second prototype had successfully covered over 111 hours on the test bench. In the January 1896 report, this was considered a success.<ref name="Sass_1962_466" />

In February 1896, Diesel considered supercharging the third prototype.<ref name="Sass_1962_467" /> [[Imanuel Lauster]], who was ordered to draw the third prototype "[[Motor 250/400]]", had finished the drawings by 30 April 1896. During summer that year the engine was built, it was completed on 6 October 1896.<ref name="Sass_1962_474" /> Tests were conducted until early 1897.<ref name="Sass_1962_475" /> First public tests began on 1 February 1897.<ref name="Sass_1962_479" /> [[Moritz Schröter]]'s test on 17 February 1897 was the main test of Diesel's engine. The engine was rated 13.1&nbsp;kW with a specific fuel consumption of 324&nbsp;g·kW<sup>−1</sup>·h<sup>−1</sup>,<ref name="Sass_1962_480" /> resulting in an effective efficiency of 26.2%.<ref name="Tschöke_2018_7" /><ref name="Mau_1984_7" /> By 1898, Diesel had become a millionaire.<ref name="Sass_1962_484" />