Abstract: There are no prospects for engines using hydrogen as fuel to be put to practical use due to significant small output, knocking, and backfire. An object of the present invention is to obtain a stable automobile engine at high drive that can be commercially put to practical use. A hydrogen-only 6-stroke engine realizing high output by 6-strokes for premixing two to seven atmospheric pressure or high pressure hydrogen and air at equivalent weight, spraying the pre-mixture into a cylinder cooled by filling the cylinder with cold air in advance, spraying, compressing, and exploding the mixture, discharging the mixture from a lower exhaust hole, and discharging remaining waste gas from an upper exhaust hole is proposed.

Abstract: An object is to improve low fuel efficiency due to heating that is necessary continually during operation in order to continuously produce hydrogen without generating CO2 from methane, and to reduce a heat loss. It is a method of reforming hydrocarbon by an oxyhydrogen flame, in which the oxyhydrogen flame is made from mixed gas of hydrogen and oxygen in a container sealed with an insulating material using a two-tube burner that supplies hydrogen and oxygen, methane pre-heated to 200 to 400° C. is injected into the above-described oxyhydrogen flame from a separate burner, methane is heat-decomposed into hydrogen and carbon powders by rapidly heating to 500 to 1000° C., and a two-tube burner using the oxyhydrogen flame is used so that hydrogen is continuously manufactured without generating CO2 as a byproduct by removing the carbon powders from the heat-decomposed mixed gas.