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Interested this post on BMW, but not new at all as an idea. In 89 I was finishing my engineering studies at UCL and two comrades were doing their dissertation on the injection of water vapor to improve the efficiency of a gasoline engine. If I remember correctly they were testing this with a Renault PRV engine equipped with a steam plant kettle. Like what the evolution of the research to the application is not very fast.
cordially
Angelo
Hello,
I also built this steam engine about 8 years ago on a 2,3l mountain range and I have been running it for about 5 years.
from 9,5l / 100, I fell to 6,5l / 100 and a polution about 3 times lower.
I sold this car there is about 18 months she was then 24 years.
no news since I guess it always rolls
At the age of 20 I owned a Simca 1300, its engine had a serious defect, the two cylinders located in the center of the engine block were too close to each other, which left a narrow space between these two cylinders, and in addition this space was pierced in its midst by a diamond-shaped hole for the passage of cooling water from the aluminum cylinder head. to go in the cast iron engine block.
At this place the cylinder head gasket was also drilled and this reduced to two strips of "cardboard" of two times 2.5 mm. As I get older, the cylinder head becomes deformed, so before finding the cause of the failure, I burnt my cylinder head gaskets four times in succession (I had to reinstall a new engine) but before that I was able to realize that when my Cylinder head gaskets were being burnt out, my modest Simca was becoming as powerful as a Porsche for about thirty km.
This was due to the "fire" from the two cylinders which gradually hollowed out thanks to the pressure, a fine channel through the seal to join the cooling water circulation hole located between them. So that the center pistons sucked from this hole a fine jet of vapor which mixed with the air-benzine mixture. The engine would acquire tremendous power in a temporary manner, but the burning of the gasket continued, and widened the initial passage of steam, and consequently the only central cylinders concerned, ended up sucking too much water, and that was the breakdown. This glitch made me think of creating at that time a DIY with a screwed steam pot, against the motor so that it heats the water contained in it, and once in the form of steam it would have been conducted by a pipe to the hole end, towards the carburetor, my father who was a mechanic burst out laughing, and dissuaded me from undertaking such a DIY. Except I tell myself that there are here in the use of water addition, multiple technological possibilities, in particular to produce electricity, so have the see, there are many possibilities even before resorting to the nuclear bullshit