A Study On Performance Optimization For 492 Dissociated Methanol Engine

Along with the rapid development of automobile industry, world-wide shortage of oil resources and environmental pollution become increasingly serious problem, which to challenge the traditional petroleum-based fuels of car engine. The dissociated methanol becomes an alternative fuel for its low emission and rich resource. Therefore, it is necessary for dissociated methanol engine to be researched.In this research, we have established the gasoline engine simulation computation model by AVL Boost software application, which is for the scientific and technological project in Shanxi Province of"low-temperature catalytic dissociated methanol in the automotive application". By using this model we can compare the simulated results with the experimental results to verify the reliability of the model. By using this model, working process of 492 dissociated methanol engine is stimulated and the related parameters (compression ratio, ignition advance angle, intake closing angle, exhaust lag angle) of the engine performance are determinated. To further improve the engine power, the article optimizes the valve timing on dissociated methanol engine, which is under the AVL Boost integrated software environment ISIGHT.In the process of improving the engine, it is the application of operation process simulation and multidisciplinary design optimization techniques that can obtain much more reliable optimized results as well as provide a theoretical guidance for prototype debugging and improvement. By using these, we can avoid the blindness of the test, shorten the test cycle, thus the workload is reduced relatively.