Optimization Of The YC4F115-30 Diesel Engine Performance Using The Experiments And Numerical Simulation

With the developing of the automotive industry of China, diesel engines have been widely used as the power machinery for vehicles, automobiles, and construction machineries. According to the operating conditions, much more experimental and simulation studies must be conducted for developing the turbocharged diesel engines.When we found the engine performance is not optimized in the experiments, while some engine parts may not be changed regardless of the improvement of the engine performance. This is due to the fact that we could not forecast the results accurately. Based on the above reasons and the operating principle, we could not suggest changing the engine parts if the experimental results are can be accepted in some degree. The main purpose of this paper is to investigate the numerical simulation of the engine performance using the software so as to reduce the R&D costs.A simplified model was selected as the basic model, and then modified it so as to make the calculated results are well agree with the experimental results. After that, engine parts parameters were revised and the semi-model was added, then the simulated results were compared with the experiments. It can be found that the errors are can be accepted.In this paper, the author also compared the experimental results and simulated results when a parameter was changed. The results found that both the absolute value and the percentage are agreed well with the experiments. Then, it can be concluded that this model can be used in the product R&D activities.Due to the expansibility of the simulated model, it can be used to predicate the engine performance not only 6 cylinder engines, 7 cylinder engines, but also 8 cylinder engine, and others.