Could a Steam Engine Under your Hood Increase Efficiency?

Inventor David Sakrisson claims that the engines in our cars today could readily be made more fuel efficient, more powerful, and release fewer emissions. All it takes, says Sakrisson, is a conversion method consisting of some "relatively simple bolt-on devices."

Instead of gasoline, Sakrisson's system uses a mixture of water and syngas for fuel. Both are commonly used today, he explains: water injection in race cars and syngas in combustion turbines in power plants.

In order for the engine in your car to burn this fuel, the second part of the system is an engine conversion unit. The unit converts conventional engines into combustion-driven, combined-cycle steam engines. Basically, once syngas enters the engine and the cylinder is heated, water is injected, which instantly flashes into steam. This steam is then the main driving force of the engine.

On his Web site , Sakrisson explains that the average vehicle wastes about 1/3 of its fuel's heat energy out the exhaust pipe and into the environment. In addition, the average vehicle wastes another 1/3 of its fuel's heat energy out the engine's cooling system, adding more heat to the environment. Thus, it's the cooling system of the car that his work is primarily aimed at improving.

"Our present engines are in need of a major retrofit in the area of internal cooling and detonation control," Sakrisson says. "Water or steam is a much better anti-detonate than is gasoline or other fuel."

Sakrisson says that his system is an affordable, realistic and permanent way to improve the efficiency of today's vehicles. While his Web site is quite loquacious and vague, the conversion of his ideas into a working product will ultimately be all that matters.

And the product could potentially have far-reaching consequences. Sakrisson claims that the technology could be adapted to agricultural and marine engines, as well as 4-stroke internal combustion engines of all types and sizes, from lawn mowers and generators, to autos and trucks, farm machinery, pumps, motor boats, construction equipment and nearly any other application that uses an internal combustion engine.

Lisa Zyga
Science Blogger

Sep 7, 2007
by makeworldbetter
makeworldbetter's picture

Huh, I thought about this after I saw..

I thought about this after I saw Bruce Crower's 6 strokes design. I thought we shouldn't need to change engine design fundermentally, we can just inject suitable amount of water into cyinder at combust cycle. And that suitable amount is decided by how hot the engine is.

I wanted to file a patent but immediate think people will have same thinking as I do, especially those who close to engine design.... (too many of them)

So I decided not to. Now from this article, I know my assessment is correct. Sakrisson thought about this early than I do. Well, good for him, not good for me, but terrible for Bruce Crower. Now who needs to rebuid a 6 stroke engine? 

Sep 7, 2007
by bottleslingguy
bottleslingguy's picture

What are the 6

What are the 6 strokes?  

"The real difficulty in changing any enterprise lies not in developing new ideas but in escaping from the old ones." Maynard Keynes

Oh yeah! Please check out my  Bottle Sling - Invention Gallery .

Sep 13, 2007
by Lisa Zyga


David Sakrisson has let me know that my sentence: "Thus, it's the cooling system of the car that his work is primarily aimed at improving."  is not exactly correct. Rather, he explains that:  "Actually, my work is primarily aimed at improving the thermal efficiency of engines, to make better use of available heat energy for power production. It is also aimed at eliminating harmful exhaust emissions, while greatly increasing fuel mileage in vehicles; thus eliminating the need for foreign oil." Thanks, David! 

Sep 27, 2007
by Kasevad

Anonymous, look again closely

Anonymous, the system of Mr. Sakrisson is far different than the 6-cycle system of Mr. Crower. Mr. Crower's system wastes all the intense exhaust heat. Mr. Sakrisson's system will put it to use producing much more power. Therefore, Mr. Sakrisson's system should be much more efficient than the Crower system.

Nov 10, 2008
by Anonymous


Isn't carbonic acid produced when water is mixed with combustion byproducts?