摘要
依据样车声品质运动感主观评价、消声器声场和流场数值计算,对消声器进行了基于动力性提高的结构改进。对比改进前后压力损失,进行发动机功率损失和车外加速噪声试验及动感主观评价。结果表明,改进后压力损失降低较多,变化的一致性较好,而发动机功率损失也有较大幅度降低,最多1.97%,最小0.56%。此外,实车满足车外加速噪声国标的前提下,运动感评价大幅度提高,尤其四档和五档,提高幅度更大。
According to results of sport sense subjective evaluation on sound quality and sound and fluid numerical calculation of original muffler of prototype car, muffler structure development is performed to improve power performance, results show that on the operating conditions, pressure loss of developed muffler structure decreases more, and its consistence is better with engine speed promoting. And power loss of engine bench test has a more decrease, on the condition of satisfying GB of car exterior acceleration noise experiment, subjective evaluation of dynamic feeling has more improvement above normal, especially development extent is more on the fourth and fifth gear.
出处
《现代制造技术与装备》
2017年第12期28-31,共4页
Modern Manufacturing Technology and Equipment
基金
国家自然科学基金项目(U1604141)
河南省高等学校重点科研项目(17A535001
17A430024)
关键词
声品质
主观评价
运动感
汽车消声器
动力性
sound quality, subjective evaluation, sport sense, automobile muffler, power performance
