Dynamic Optimal Control Strategy of Membrane Oxygen Enrichment for Engine Performance in the Plateau Environment

The exhaust temperature of the engine increases, the fuel utilization and the power decreases in the plateau environment. To solve the above problems, this paper proposes an onboard control strategy of membrane oxygen enrichment, which is applied in variable working conditions. First, the dynamics model of the engine is established, and the dynamic optimal control strategy of the membrane oxygen-enriched engine is developed by using the dynamic optimized inverse sequence control algorithm. Second, the test platform of vehicle-mounted membrane oxygenen-riched engine is constructed, and the test platform is used to perform comparison tests of different working conditions. Third, the engine indoor test and the engineering vehicle real vehicle test are performed respectively. The results show that the dynamic optimized control strategy of the membrane oxygenen-riched engine improves the thermal efficiency and dynamic response performance. Moreover, the control strategy reduces the exhaust temperature and fuel consumption rate of the engine. Therefore, this method enables the engine to have better energy-saving characteristics in the plateau environment, enhances the adaptability of the engine in various working conditions. This method can be extended to the field of plateau environment operations of construction vehicles.