一种带旋转式阀门的高膨胀比汽油机

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本文介绍的汽油机的膨胀比为14:1。在这种发动机上装有旋转式进气控制阀,以便降低有效压缩比、避免爆燃、控制功率输出。以特征数和准稳态模型为基础的计算机模拟结果表明这种旋转式阀门系统性能较好。试验结果与预期结果相吻合,在负荷大于50%负荷时油耗低于240g/kW·h。但在负荷很小时,由于传统的节气门的使用,会不可避免地影响到新的进气系统的性能。本文还估计了汽车循环运行和等速运行的升公里数。而且预测,经优化的涡轮增压会使燃油经济性得到明显改善。 This article describes the gasoline engine expansion ratio of 14: 1. In this engine is equipped with a rotary intake control valve, in order to reduce the effective compression ratio, to deflagration, control of power output. Computer simulation based on the characteristic number and quasi-steady-state model shows that this kind of rotary valve system has good performance. The test results are consistent with the expected results, with fuel consumption below 240 g / kW · h at loads greater than 50%. However, when the load is small, due to the traditional use of throttle, will inevitably affect the performance of the new intake system. This article also estimates the number of kilometers traveled in a car cycle and at constant speed. It is also predicted that the optimized turbocharging will result in a significant improvement in fuel economy.
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