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首页> 外文会议>EAEC European automotive congress >OPTIMIZATION OF SCAVENGING AND COMBUSTION WITHIN ADVANCED INTERNAL COMBUSTION ENGINES WITH CONCENTRIC CAM SYSTEMS USING COMBINED 1D/3D SIMULATION
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OPTIMIZATION OF SCAVENGING AND COMBUSTION WITHIN ADVANCED INTERNAL COMBUSTION ENGINES WITH CONCENTRIC CAM SYSTEMS USING COMBINED 1D/3D SIMULATION

机译：使用组合1D / 3D仿真在同心CAM系统中优化高级内燃机内的燃烧和燃烧

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The internal combustion engines for future automotive propulsion, with a high specific torque in a wide speed range, have to accomplish drastic norms regarding CO2 emissions – thus fuel consumption – and pollutant emission. A compact basic direct injection engine with joinable super- and turbocharging is for both SI and CI engines families the most promising solution. The effectiveness of such configuration is mainly determined by the management of scavenging – with the target of the optimum ratio between fresh air and burned gas within the cylinder in the whole load and speed range. The paper presents the potential of a new concept of valve control by concentric cams, in base on 1D/3D simulation of the scavenging, internal mixture formation by direct injection, combustion and formation of exhaust gas components. The models are calibrated by experimental analysis on engine test benches. The influence of the intake and exhaust valve control in terms of phasing, valve lift and opening duration on engine performance is illustrated for different load/speed combinations.
机译：用于未来汽车推进的内燃机，在宽速度范围内具有高特定扭矩，必须实现关于二氧化碳排放的急性规范 - 因此燃料消耗 - 和污染物排放。具有可加入超级和涡轮增压的紧凑型基本直喷发动机是Si和CI引擎家庭最有前途的解决方案。这种配置的有效性主要由扫除的管理决定 - 在整个负载和速度范围内的圆柱内的新鲜空气和燃烧气体之间的最佳比率的目标。本文介绍了同心凸轮的新阀门控制概念的潜力，在扫除的扫描，内部混合物形成的1D / 3D模拟中，通过直接喷射，燃烧和排气组分形成。通过对发动机测试台的实验分析来校准模型。在不同的负载/速度组合中示出了在分阶段，阀升程和开启持续时间方面的影响，用于不同的负载/速度组合。

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