Russian diesel engines

"As we see, not a single one of the [claimed in the patent] 'fundamental conditions for perfect combustion' is fulfilled in the actual Diesel engine; but precisely for this reason, it achieved not only its practical suitability in general, but also its economic superiority. The fact that, since 1897, parallel to the change in the diagram, there has been a constant decrease in kerosene from 240 to 185 g gives us the right to quite seriously assert that the thermal effect will be more perfect the further the 'rational heat engine' deviates from its prototype..."
Hugo Güldner, engineer, director of the Güldner Motor Society in Munich.
Since ancient times, the rulers of our kingdom-state have had a glorious tradition of criticizing or ignoring all the successes achieved before them, while loudly praising their own, sometimes quite modest, accomplishments. Even during the Soviet era (which is now so vigorously criticized), every book wrote that before 1917, Tsarist Russia's industry was in a semi-artisanal state, and nothing particularly remarkable occurred in its numerous factories and plants except the exploitation of the proletariat. Therefore, many modern citizens sincerely believe that in Tsarist Russia, people traveled the streets exclusively in carts and sleighs, the most typical Russian mechanic was the village blacksmith, and the crowning achievement of Russian engineering was a blazing, beautiful steam locomotive.
But sometimes, for the sake of exception, Soviet journalism suddenly and unexpectedly came out of historical stupor and revealed some amazing facts from the pre-revolutionary past.
For example, in 1949, when Soviet industry had caught its breath a little after the difficult war years, and the USSR was under an economic blockade, organized by the large capitalist countries that had conspired with each other, it was decided to remind the bourgeois world of some glorious technical achievements that had been made in Russia even before the revolution.
It was then that they remembered that even at the beginning of the last century, Russian factories were producing magnificent engines that they were not ashamed to boast about to the whole world.
And so, in November 1949, a scientific conference was opened, at which gray-bearded scientists and engineers recalled the glorious deeds of bygone days, and ultimately drew up a curious resolution:
…The modern compression ignition engine is completely different from the “rational” engine proposed by R. Diesel, but never realized and unfeasible…
I have a feeling that the reader is now smiling slyly and shaking his head in disbelief, as if to say, here again our country is being declared the “homeland of elephants”... And completely in vain.
It's worth remembering that Russian industrial production was founded back in the 16th century, when Peter the Great began luring large numbers of foreign specialists in various fields of science and technology to Russia. Among the arriving foreigners were remarkable, natural-born mechanics, many of whom subsequently married beautiful Russian women and, as a result, found themselves forever stranded in the snowy expanses of our vast Motherland. And the technical genes of the old masters, like sparks flaring brightly in distant descendants, periodically poured into the Russian engineering community astonishingly talented Russians with non-Russian, German and Swedish surnames reminiscent of medieval Germans and Swedish. Even after Peter, some intelligent rulers continued this glorious tradition.
The harbinger of the era of compression ignition engine design in our country was the chairman of the Russian Technical Society, the "Russian German" Professor Georgy (Georg) Filippovich von Depp, who came to Kassel in June 1897 and attended the historic congress of the Union of German Engineers, where his classmate from the Munich School, Rudolf Diesel, gave a report on his new engine.

G.F. Depp
Depp immediately appreciated the undoubted benefits of such an engine for Russian industry and, after the meeting, met with the inventor and proposed considering the possibility of transferring the right (patent) to manufacture engines of his design in Russia.
The arrogant inventor, at the height of his fame at the time, was highly skeptical of this undertaking. He told his old friend that, in his opinion, Russian mechanical engineering was still in its infancy, and that low-skilled, sloppy Russian workers were unable to ensure the necessary precision in manufacturing engine parts, making its trouble-free operation impossible. This would only undermine the designer's reputation and tarnish the honor of his "rational heat engine." Depp gently explained to the inventor that Russia (besides bears) also had an industry that had achieved a good technical level. Ultimately, Diesel agreed to consider the matter (a little extra money never hurt anyone) and soon hastened to protect the rights to his engine with a Russian patent (privilege), which was issued on August 9, 1897, under No. 261.
A very important remark needs to be made here.
The description attached to the Russian Privilege No. 261 stated that in the invented engine the air is first compressed so strongly that the resulting temperature exceeds the ignition temperature of the fuel used; then a “combustible material” is gradually introduced into the cylinder, the combustion of which “not accompanied by a noticeable increase in temperature and pressure" Moreover, Diesel wrote that "cooling is the result of the work of the gases themselves, without requiring artificial cooling of the cylinder walls, which, on the contrary, are supplied with an insulating cover».
Simply put, in a Russian patented diesel engine, fuel combustion occurs at a constant temperature and pressure; the engine does not require a cooling system (water jacket), and it even requires additional cylinder insulation to ensure that precious heat is not lost to the atmosphere, but is used for useful work.
From the analysis of the description, one can draw an objective conclusion: Rudolf Diesel protected with the Russian privilege not the actual engine that was built at the Augsburg plant (sample No. 3), but the engine that was the fruit of his theoretical research - the very same “rational heat engine” that was never embodied in metal and existed only in the inventor’s dreams.
It is this science fiction engine imagined by Rudolf Diesel that can and should be called a “diesel motor”.
This was reported by one of the speakers during the above-mentioned scientific conference held in 1949.
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