Methanol Dissociation: The Effects of Partial Dissociation

摘要

The report documents the work done in-house with simulated partial dissociation of methanol with the NAPS-Z methanol engine. EPA found that efficiency improvements when using dissociated methanol came from two sources. (1) The initial improvement came from the ability to run at a given lean f/a ratio with less cyclic variation and presumably fewer occurances of lean misfire. (2) The second part of the efficiency improvement came from the change-of-state of the liquid fuel to a dissociated fuel.