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
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.
대표청구항▼
1. 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 a
1. 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 comprising methanol, 12% to 40% by weight water, and 0-20% by weight dimethyl ether into the combustion chamber; andigniting the main fuel/air mixture to thereby drive the engine. 2. The process of claim 1, including fumigating the intake air with the fumigant to an amount of 0.5%-70% wt of main fuel. 3. The process of claim 1, including fumigating with a fumigant comprising an ether as the ignition enhancer. 4. The process of claim 3, including fumigating with a fumigant comprising dimethyl ether. 5. The process of claim 1, including introducing a main fuel comprising water and methanol in a ratio of between 12:88 to 40:60 into the combustion chamber. 6. The process of claim 1, including introducing a main fuel comprising between 12% and 23% by weight water, and 0-20% by weight of additives. 7. The process of claim 1, including introducing a main fuel comprising between 20% and 40% by weight water, and 0-20% by weight of additives. 8. The process of claim 1, wherein the main fuel comprises 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. 9. The process of claim 1, wherein the main fuel comprises a crude methanol and up to 60% by weight non-water additives, or the main fuel comprises a refined methanol and up to 25% by weight non-water additives. 10. The process of claim 1, including preheating the intake air in the combustion chamber before feeding the main fuel into the combustion chamber. 11. The process of claim 10, including pre-heating the intake air to at least 130° C. 12. The process of claim 1, including producing the ignition enhancer by catalytic conversion of methanol in a stream of the main fuel composition. 13. The process of claim 1, including providing a pre-fuel comprising methanol and ether as ignition enhancer, separating the ignition enhancer from the pre-fuel, fumigating the intake air stream with the ignition enhancer separated from the pre-fuel, and introducing the balance of the pre-fuel following separation of the ignition enhancer into the combustion chamber as the main fuel. 14. The process of claim 1, wherein the main fuel composition comprises from 12% to 35% by weight water, and not more than 0-20% by weight dimethyl ether.
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