Abstract: A diesel engine fuel composition including methanol, at least 5% by weight water, one or more additives selected from the group consisting of: ignition improvers, fuel extenders, combustion enhancers, oxygen absorbing oil, lubricity additives, product colouration additives, flame colour additives, anti corrosion additives, biocides, freeze point depressants, deposit reductants, denaturants, pH controlling agents, and mixtures thereof, and 0% to 20% by weight dimethyl ether. Also provided is a process of powering a compression ignition engine using such a diesel engine fuel.

Abstract: A diesel engine fuel composition comprising methanol at a level of at least 20% by weight of the fuel; water at a level at least 20% by weight of the fuel; a ratio of water to methanol of between 20:80 to 80:20; a total amount of water and methanol of at least 60% by weight of the fuel composition, and one or more additives, in a total amount of at least 0.1% by weight of the fuel, wherein the level of sodium chloride, if present as an additive, is between 0 to 0.5% by weight of the fuel, and the level of flavorant, if present as an additive, is between 0 to 1.5% of the composition is provided. Also provided is a process for powering a compression ignition engine using a fuel comprising methanol and water, including inlet air pre-heating, and associated systems and uses of the fuel composition.

Abstract: A process for generating a main fuel composition comprising methanol and water and not more than 20% by weight dimethyl ether, and a fumigant comprising dimethyl ether, the process comprising: providing a pre-fuel composition comprising methanol and dimethyl ether, adding water to the pre-fuel composition to cause or aid evaporation of at least a portion of the dimethyl ether from the pre-fuel composition, collecting the portion of dimethyl ether evaporated from the pre-fuel composition for use as a fumigant, and using the remainder of the pre-fuel composition comprising methanol and water as a main fuel composition. The water may be at a temperature above ambient.

Abstract: A process of powering a compression ignition engine using a main fuel comprising methanol and water, including: fumigating an intake air stream with a fumigant comprising an ignition enhancer; introducing the fumigated intake air into a combustion chamber in the engine and compressing the intake air; introducing the main fuel into the combustion chamber; and igniting the main fuel/air mixture to thereby drive the engine. Also provided a fuel for use in the process, a two-part fuel for use in the process, and associated power generation systems.

Abstract: A process for generating a main fuel composition comprising methanol and water and not more than 20% by weight dimethyl ether, and a fumigant comprising dimethyl ether, the process comprising: providing a pre-fuel composition comprising methanol and dimethyl ether, adding water to the pre-fuel composition to cause or aid evaporation of at least a portion of the dimethyl ether from the pre-fuel composition, collecting the portion of dimethyl ether evaporated from the pre-fuel composition for use as a fumigant, and using the remainder of the pre-fuel composition comprising methanol and water as a main fuel composition. The water may be at a temperature above ambient.

Abstract: A process of powering a compression ignition engine using a main fuel comprising methanol and water, including: fumigating an intake air stream with a fumigant comprising an ignition enhancer; introducing the fumigated intake air into a combustion chamber in the engine and compressing the intake air; introducing the main fuel into the combustion chamber; and igniting the main fuel/air mixture to thereby drive the engine. Also provided a fuel for use in the process, a two-part fuel for use in the process, and associated power generation systems.

Abstract: A diesel engine fuel composition comprising methanol at a level of at least 20% by weight of the fuel; water at a level at least 20% by weight of the fuel; a ratio of water to methanol of between 20:80 to 80:20; a total amount of water and methanol of at least 60% by weight of the fuel composition, and one or more additives, in a total amount of at least 0.1% by weight of the fuel, wherein the level of sodium chloride, if present as an additive, is between 0 to 0.5% by weight of the fuel, and the level of flavourant, if present as an additive, is between 0 to 1.5% of the composition is provided. Also provided is a process for powering a compression ignition engine using a fuel comprising methanol and water, including inlet air pre-heating, and associated systems and uses of the fuel composition.