Research For Inlet Flow Characteristics Of 1P65F Gasoline Engine

Modern engine technology development is very fast, advanced computer aided engineering (CAE) technology has been very widely used and popular. Computer hardware, software, rapid development of technology, promote the development of numerical simulation of the engine. Numerical simulation technology in the early design phase for a number of different program than the right, and the best optimized solution; can provide many difficult to measure the amount of information, and short cycle and low cost.Currently, the gasoline engine industry in China is developing rapidly, quality and productivity are increased every year. Through the development of the domestic machine and mapping mainly by imitation, not their own intellectual property, product variety is homogeneous, single of serious, need to greatly enhance the ability of independent development, and CAE technology is a high output, low input, low The cost of the program, will be used more widely. This paper will CFD technology into the development process of engine, Using FIRE to simulation 1P65F engine’s inlet flow and improved performance. Identified airway unreasonable, and redesigned the 2 airway, analysis and the results were compared to select a higher flow coefficient of a kind made to conduct testing, validation of the CFD calculation results Correctness.Include the following:Drawn with a CAD geometry, including the inlet and the cylinder model and then automatically mesh with FIRE; established the appropriate physical and mathematical model for numerical calculation software with FIRE. The results of the analysis and processing were obtained under different valve lift airway flow coefficient, inlet, the cylinder flow velocity and pressure distribution and other information. By numerical calculation of flow coefficient compared with experimental results, and the flow field based on the analysis of simulation results proved that the engine instead of using CFD calculation to obtain the steady flow test the applicability of the inlet flow coefficient, demonstrate the use of CFD to improve the inlet To improve the engine performance is a low-cost solution.