Patent ID: 6896794

Claim:
A fuel for internal combustion-powered tools, comprising one of liquefied, combustible gas or gas mixture with a vapor pressure of 2 to 15 bar absolute at 20° C.; and an agent for improving combustion behavior of the fuel and containing at least one combustible compound soluble in the one of gas or gas mixture and is a liquid at 20° C. and atmospheric pressure; wherein the one of liquefied, combustible gas and gas mixture comprises propane, propene, propadiene, n-butane, isobutane, butene, dimethyl ether, methylacetylene, nitrous oxide, nitromethane, and their mixtures and wherein the one of combustible gas mixture and gas is a combustible gas mixture comprising a mixture of 20 to 80% by weight of dimethyl ether, 1 to 15% by weight of propene and 5 to 79% by weight of isobutane.