通过速度控制优化现代踏板车的废气排放
Exhaust Gas Optimization of Modern Scooters by Velocity Control
AI总结：
本研究通过速度控制线控节气门系统优化欧5标准50cc踏板车，避免了点火正时限制，在平地上实现17%的燃油经济性提升和废气流量减少，同时CO、CO2和HC排放显著降低，NOx有所增加。
摘要：
本文研究了通过在现代50cc踏板车（欧5标准）上应用速度控制的线控节气门系统来优化废气成分。目前，燃烧动力踏板车仍受到低效的限制，导致不合理的燃油消耗和不利的废气排放。速度控制通过负向调整点火正时来避免限制，并转而调节节气门开度。为了测量发动机参数，采集了喷射量、发动机转速、点火正时、气缸壁温度、废气温度、氧传感器数据、曲轴位置和缸内压力。同时，记录了CAN总线上的车辆数据，如节气门开度、骑手的加速指令和车辆速度。为了确定废气成分，除了温度和流量外，还使用了五个探头分别感应CO、CO2、NOx、O2和HC。测试车辆为标致Kisbee 50 4T（欧5标准）。在滚筒测功机上，对原始和优化的限制进行了各种坡度下的最高速度测试。因此，可以对所有限制工作点做出陈述。所需的阻力参数先前在滑行测试中确定。在平地上行驶时，节气门开度50%的差异导致燃油经济性提高17%。通过测量发动机参数，证明了随着内部气缸压力的增加，点火正时达到最优。此外，废气流量减少了17%。CO排放降低了8.4倍，CO2降低了1.17倍，HC降低了2.1倍，而NOx增加了3倍。
英文摘要：
This paper investigates the optimization of the exhaust gas composition by applying a velocity-controlled Throttle-by-Wire-System on modern 50 cc scooters (Euro 5). Nowadays combustion-powered scooters are still inefficiently restricted, resulting in an unreasonably high fuel consumption and unfavorable exhaust emissions. The velocity control prevents restriction by negatively shifting the ignition timing and regulates the throttle valve opening instead. Injection quantity, engine speed, ignition timing, cylinder wall temperature, exhaust gas temperature, oxygen sensor data, crankshaft position and in-cylinder pressure were acquired to measure engine parameters. At the same time, vehicle data on the CAN bus, such as throttle opening angle, the rider's acceleration command and vehicle velocity were recorded. For determination of the exhaust gas composition, five probes were sensing CO, CO2, NOx, O2 and HC in addition to the temperature and mass flow. A Peugeot Kisbee 50 4T (Euro 5) serves as test vehicle. The original and the optimized restriction were subjected to various gradients on a roller dynamometer at top speed. Thus, a statement can be made about all operating points of restriction. The resistance parameters required, were previously determined in a coast down test. When driving on level ground, a difference of 50% in the throttle opening leads to a 17% improvement in fuel economy. By measuring the engine parameters, optimum ignition timing could be proven with increasing internal cylinder pressure. Further, 17% reduction in exhaust gas flow was demonstrated. CO emissions decreased by a factor of 8.4, CO2 by 1.17 and HC by 2.1 while NOx increased by a factor of 3.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
