汽车风阻系数

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理性看待风阻系数测试争议
Jing Ji Ri Bao· 2025-05-16 21:54
Core Viewpoint - The recent controversy over the wind resistance coefficient of the Avita 12 highlights the intense competition and scrutiny within the automotive industry, particularly among electric vehicle manufacturers, where such technical parameters have become critical for consumer perception and product differentiation [1][2]. Group 1: Wind Resistance Coefficient Importance - The wind resistance coefficient is a key parameter that measures the air resistance a vehicle faces while driving, directly impacting fuel economy, range, stability at high speeds, and noise levels [1]. - The significance of low wind resistance has been amplified in the electric vehicle sector, where it not only affects consumer perception but also enhances the vehicle's range [1]. - The marketing strategy of Tesla, particularly with the Model S, has set a precedent in the industry, linking low wind resistance with technological advancement and reshaping consumer expectations [1]. Group 2: Industry Competition and Marketing Dynamics - The automotive market has seen a shift from price competition to a focus on technical specifications, with companies striving to present their data as superior to competitors [2]. - The rise of self-media and digital platforms has led to a competitive environment where sensationalism is often used to attract attention, sometimes at the expense of accuracy [2]. Group 3: Testing Standards and Industry Challenges - Rigorous testing standards and methodologies are essential for accurate wind resistance measurements, with the China Automotive Engineering Research Institute's wind tunnel facility costing approximately 550 million yuan [3]. - The lack of unified national standards for aerodynamic testing in China has allowed for unregulated and potentially misleading private testing, leading to public disputes and calls for regulatory oversight [3]. - Recent controversies surrounding various vehicle tests reflect the need for improved regulation and standardization in the automotive testing industry to protect consumer rights and support industry development [3]. Group 4: Broader Implications of Wind Resistance - While the wind resistance coefficient is often viewed as a symbol of technological prowess, its impact is most pronounced in high-speed scenarios, with less significance in everyday urban driving conditions [4]. - Companies should focus on balanced development across various performance metrics rather than prioritizing wind resistance as the sole indicator of quality [4]. - The best technologies should enhance user experience rather than merely serve as marketing metrics, emphasizing the importance of practical application over theoretical superiority [4].
中国汽研首次公开直播阿维塔12风洞测试
Jing Ji Ri Bao· 2025-05-12 07:38
作为空气动力学效率的量化指标,汽车风阻系数是衡量车辆行驶时空气阻力大小的关键参数,直接影响着车辆燃油经济性、续航能力、高速稳定性和噪音水平。阻力数值越低,空气阻力越小。而 此前蔚来整车工程性能集成部空气动力学经理姜波表示,对于纯电汽车而言,降低汽车风阻可显著提升续航里程。根据研究测算,汽车风阻下降10%,NEDC综合工况节油率可达1.5%,而单车成 随着车市竞争越来越激烈,车企不仅卷价格,也开始卷各种技术参数。在技术可控性越来越强的今天,风阻系数就变成了新能源车企竞争中少有的"有感数据":不仅能影响用户认知,还能落到实 "为降低风阻、降低能耗,提升用车良好体验,阿维塔12创新使用了电子外后视镜、空悬、碟翼式前脸、隐藏式雷达、外置式主动进气格栅等配置。"阿维塔科技副总裁雍军还介绍了阿维塔12在 针对同款车型在不同风洞实测风阻系数不同的情况,雍军认为主要有三点原因,一是车辆配置或功能状态差异,二是测试方法不统一,三是某些零部件是否完整。"迄今为止我国汽车行业在风洞 "敢于公开直播,这本身就是勇气和实力的体现。"重庆理工大学车辆工程学院院长赖晨光表示,从更长远的角度来说,优化风阻系数应当成为车企自主研发的前进方向, ...
阿维塔发律师函:要求博主立即删帖,道歉声明连续置顶三十日
21世纪经济报道· 2025-05-12 04:12
作 者丨尹华禄 编 辑丨陈思颖 5月1 2日,阿维塔科技法务部在社交平台发布关于要求博主"苏黎世贝勒爷"立即删除不实言论 并公开道歉的律师函。 律师函提出,"苏黎世贝勒爷"在收到本函当日,立即删除在2 0 2 5年5月2日—2 0 2 5年5月1 0日 期间所发布的针对阿维塔1 2汽车空气动力学的风阻系数测试不实言论的全网(包括但不限于 新浪微博、小红书、哔哩哔哩、抖音等)全部文章及视频等内容。 此外,就博主侵犯阿维塔名誉权的行为,诚挚道歉,并将道歉声明在博主全网(包括但不限 于新浪微博、小红书、哔哩哔哩、抖音等)账号上连续置顶三十日,消除给阿维塔造成的负 面影响。 律师函显示,2 0 2 5年5月2日—2 0 2 5年5月9日,"苏黎世贝勒爷"在全网各平台陆续发布了标题 为"一个敢吹,一个敢测??头铁博主风阻系数全网首测!!国产电车风阻系数屡破纪录,实 测竟和2 0年前燃油车水平一样" "车企公关骚操作第二集" "打,奉陪到底!测,别玩儿猫腻! 风阻事件当事人回溯!"等的文章和视频内容。 "苏黎世贝勒爷"前述文章发布后,阿维塔注意到较多如贵方在内的网友关注着阿维塔1 2汽车 空气动力学的风阻系数,基于此,阿 ...
汽车风阻系数被质疑造假,阿维塔发律师函:要求博主立即删帖,道歉声明连续置顶三十日
2 1 Shi Ji Jing Ji Bao Dao· 2025-05-12 03:35
Core Viewpoint - Avita Technology has taken legal action against the blogger "Zurich Beileye" for spreading false statements regarding the aerodynamic drag coefficient testing of the Avita 12 vehicle, demanding immediate removal of the content and a public apology [1][2][3]. Group 1: Legal Action and Response - Avita's legal notice requires "Zurich Beileye" to delete all posts and videos made between May 2, 2025, and May 10, 2025, that contain false claims about the Avita 12's aerodynamic testing [1][3]. - The notice also demands a public apology to be pinned on the blogger's social media accounts for 30 days to mitigate the negative impact on Avita's reputation [1][2]. Group 2: Testing and Results - Following the controversy, Avita conducted a live broadcast of the aerodynamic drag coefficient testing of the Avita 12 on May 9, 2025, at the China Automotive Engineering Research Institute [2][4]. - The testing was performed by a certified authority, with results showing a drag coefficient (Cd) of 0.217 at a test speed of 120 kph, adhering to international testing standards [2][4]. Group 3: Public Perception and Industry Context - The blogger's claims have drawn significant public attention, leading Avita to take proactive measures to clarify the situation and uphold its brand integrity [2][4]. - The drag coefficient is a critical parameter affecting vehicle performance, including fuel efficiency, range, stability at high speeds, and noise levels [6].
否认风阻系数造假,阿维塔发律师函:要求删除不实言论并公开道歉
Di Yi Cai Jing· 2025-05-12 03:18
Core Viewpoint - The company Avita Technology has requested the blogger "Zurich Beller" to delete false statements regarding the aerodynamic drag coefficient testing of the Avita 12 vehicle and to issue a public apology, which should be pinned on all social media platforms for thirty days [1][3][10]. Group 1: Legal Actions and Statements - Avita's legal department issued a lawyer's letter on May 12, demanding the immediate removal of false statements made by the blogger between May 2 and May 10 [1][3]. - The lawyer's letter claims that the blogger's posts have caused significant negative impact on Avita's brand and commercial reputation [3][10]. - If the demands are not met, Avita's legal team will pursue all possible legal actions, including civil litigation, with the blogger bearing all associated costs [10][11]. Group 2: Testing and Results - On May 9, Avita conducted a live broadcast of the aerodynamic drag coefficient testing of the Avita 12 at the China Automotive Engineering Research Institute's wind tunnel laboratory [2][8]. - The testing was performed by a recognized authority, with professional technicians operating the equipment, and the process was certified by a notary public, adhering to international wind tunnel testing standards [2][8]. - The final result of the drag coefficient at a wind speed of 120 kph was reported as Cd: 0.217 [2][8]. Group 3: Public Reaction and Misleading Information - Despite the authoritative testing and notarization, the blogger continued to publish content that Avita claims misleads the public and damages the company's reputation [3][9]. - The blogger's posts included provocative titles and insinuations that Avita manipulated the testing process, which Avita argues exceeds reasonable criticism and misleads the audience [3][9].