Interactive transcript · 137 lines
Welcome to TalkCast, the podcast where we unpack the biggest stories in technology, science, and
欢迎来到 TalkCast，这是一个我们剖析科技、科学以及...
everyday life, making complex concepts easy and engaging for English learners.
日常生活中的重大新闻，让英语学习者觉得复杂概念变得简单且引人入胜。
I am your host, Rachel.
我是你们的主持人蕾切尔。
Today, we are taking a deep dive into the fast -moving world of modern automobiles.
今天，我们将深入探讨瞬息万变的现代汽车世界。
If you have been following technology news recently, you might have noticed a fascinating debate
如果你最近一直在关注科技新闻，你可能会注意到一场迷人的争论
about how modern cars are developed.
关于现代汽车是如何研发的。
Historically, creating a brand -new vehicle took about four to five years.
历史上，打造一辆全新的汽车大约需要四到五年。
Engineers had to design every component from scratch, build prototype cars, and test them rigorously.
工程师必须从头设计每一个部件，制造原型车，并对其进行严格测试。
However, with the rise of electric vehicles and software -driven tech, some automakers have
然而，随着电动汽车和软件驱动技术的兴起，一些汽车制造商已经
compressed that timeline down to just 18 months.
将这一时间表压缩到了短短 18 个月。
These fast -tracked models are often called rushed cars.
这些加速推进的车型通常被称为仓促造出的车。
But recently, four government departments issued a joint guidance to curb overly hasty vehicle
但最近，四个政府部门联合发布指导意见，以遏制过度仓促的车辆
development and exaggerated safety claims, urging the industry to prioritize thorough testing.
开发和夸大的安全宣传，敦促行业优先进行彻底测试。
So, why does vehicle validation take so much time?
那么，为什么汽车验证需要这么长时间？
Can computer models really replace real -world road tests?
计算机模型真的能替代现实世界的道路测试吗？
Joining us today is Dr.
今天做客我们节目的是...
David, a senior automotive validation engineer with over 15 years of experience putting cars through
大卫，一位拥有超过 15 年经验的汽车验证高级工程师，他曾让汽车经历
the ultimate stress tests.
终极压力测试。
David, welcome to TalkCast.
大卫，欢迎来到 TalkCast。
Thank you so much, Rachel.
非常感谢你，雷切尔。
It is a real pleasure to be here with you and your listeners today.
今天能和您以及您的听众在一起，我感到非常荣幸。
David, let us start with the basics.
大卫，让我们从基础开始。
How did car development become so fast in recent years?
近年来，汽车研发是如何变得如此迅速的？
What allowed manufacturers to cut the traditional five -year timeline down to under two years?
是什么让制造商能够将传统的五年时间缩短到两年以内？
That is a great question to start with.
这是一个很好的开始的问题。
The rapid acceleration comes down to two main drivers, modular electric platforms and advanced
这种快速加速归结为两个主要驱动因素，即模块化电动平台和先进的
digital simulation.
数字模拟。
In traditional gasoline cars, designing a mechanical engine and gearbox was extremely complex,
在传统的汽油车中，设计机械发动机和变速箱极其复杂，
involving thousands of moving parts.
涉及数千个运动部件。
With electric vehicles, or EVs, the powertrain is much more modular.
对于电动汽车（EV），其动力总成模块化程度要高得多。
You can think of it like building with standardized blocks.
你可以把它想象成用标准化的积木搭建。
Automakers can reuse one battery and chassis platform for several different car models.
汽车制造商可以为几种不同的车型重复使用一个电池和底盘平台。
Furthermore, computer -aided engineering, or CAE, allows us to run virtual crash tests and
此外，计算机辅助工程（CAE）允许我们运行虚拟碰撞测试和
aerodynamic simulations thousands of times on computers before building a single physical prototype.
空气动力学模拟数千次，然后再制造单个物理原型。
That saves incredible amounts of time in early design stages.
这在早期设计阶段节省了难以置信的大量时间。
That sounds like a major technological leap forward.
这听起来像是技术上的一个重大飞跃。
But if computer simulations are so advanced now, why are regulators concerned about rushed cars?
但如果现在的计算机模拟如此先进，为什么监管机构会对仓促造出的汽车感到担忧？
What gets missed when physical testing is shortened?
当物理测试被缩短时，会遗漏什么？
Computer simulations are wonderful tools, Rachel.
计算机模拟是极好的工具，雷切尔。
But a virtual model is only as good as the data you give it.
但虚拟模型的好坏取决于你输入的数据。
A real car operates in an unpredictable real world.
一辆真正的汽车运行在不可预测的现实世界中。
Simulations assume ideal conditions.
模拟假设的是理想条件。
But real life presents infinite variables like sudden temperature swings, bad roads, hidden material
但现实生活中存在无限的变量，比如突然的温度波动、糟糕的路面、隐藏的材料
flaws, and long -term wear and tear.
缺陷以及长期的磨损。
When development schedules are compressed too aggressively, companies often cut down on physical
当开发进度被过于激进地压缩时，公司通常会减少物理
endurance testing.
耐久测试。
Physical endurance testing means driving real prototype cars for hundreds of thousands of kilometers
物理耐久性测试意味着驾驶真正的原型汽车行驶数十万公里
across mountain roads, city traffic, and rough terrain.
穿梭于山路、城市交通和崎岖的地形中。
If you skip those physical miles, you miss structural fatigue, which is when materials weaken over
如果你跳过了这些实际里程，你就会错过结构性疲劳，即材料随着
time due to constant vibration.
由于持续振动而随时间减弱的现象。
You also miss subtle issues in what we call NVH. NVH? NVH?
你也会错过我们所称的 NVH 中那些微妙的问题。
That sounds like one of those technical terms engineers love to use.
这听起来像是工程师们喜欢使用的那些技术术语之一。
Could you explain what NVH means in plain language?
你能用通俗的语言解释一下 NVH 是什么意思吗？
Of course.
当然可以。
NVH stands for noise, vibration, and harshness.
NVH 代表着噪声、振动和声振粗糙度。
It measures the overall physical comfort of the car cabin.
它衡量的是汽车座舱的整体身体舒适度。
Noise is what you hear, like wind whistling past the windows or tire hum on asphalt.
噪音是你听到的声音，比如风刮过窗户的呼啸声或沥青路面上轮胎的嗡嗡声。
Vibration is what you feel through the steering wheel or seat.
振动是你通过方向盘或座椅感受到的。
Harshness is how hard a bump feels when you hit a pothole.
粗糙感是指当你压过坑洼时颠簸的感觉有多强烈。
High NVH means the ride feels loud, shaky, and unrefined.
高 NVH 意味着驾乘感受嘈杂、摇晃且不够精致。
The fine -tuning NVH requires months of adjusting physical rubber bushings, soundproofing layers, and
微调 NVH 需要几个月时间来调整物理橡胶衬套、隔音层和
suspension springs in real -world driving conditions.
现实驾驶条件下的悬挂弹簧。
You simply cannot measure or perfect human comfort entirely inside a computer simulation.
你根本无法完全在计算机模拟中衡量或完善人类的舒适度。
I see.
我明白了。
So NVH is really about how smooth, quiet, and solid the car feels to a real human driver.
所以 NVH 实际上关乎对于一个真正的驾驶员来说，汽车感觉有多么平稳、安静和扎实。
Now, I know test engineers spend months driving prototypes in extreme environments.
现在我知道，测试工程师花了好几个月的时间在极端环境中驾驶原型车。
What does the industry call extreme environment testing?
行业将这种极端环境测试称为什么？
Extreme testing is where engineers put vehicles through ultimate stress tests.
极端测试是指工程师让车辆经受终极压力测试的地方。
Before any new model goes on sale, it must undergo trials in extreme heat, extreme cold, and high altitudes.
在任何新车型上市之前，它必须经历极热、极寒和高海拔的试验。
For hot weather testing, we take prototypes to desert regions where temperatures exceed 45 degrees Celsius.
对于炎热天气测试，我们把原型车带到气温超过 45 摄氏度的沙漠地区。
We drive the car up steep hills with the air conditioning on full blast to check thermal management,
我们开着全开的空调把车开上陡坡，以检查热管理，
making sure the electric battery and motors do not overheat, and that interior plastics do not warp
确保电池和电机不会过热，并且内饰塑料不会变形
under intense sun.
在强烈的阳光下。
And what happens during winter testing in freezing conditions?
在严寒条件下的 冬季测试中会发生什么？
For cold weather testing, we head to places like northern China or northern Europe, where
对于寒冷天气测试，我们前往中国北方或北欧等地，那里的
temperatures drop below minus 30 degrees Celsius.
气温降至零下 30 摄氏度。
Extreme cold is tough on vehicles.
极寒对车辆来说很艰难。
Rubber seals get brittle, door handles can freeze, and battery chemistry slows down dramatically,
橡胶密封件变得脆弱，车门把手会冻住，电池化学反应显著减慢，
which reduces driving range and charging speed.
这会减少续航里程和充电速度。
We also test electronic stability controls on ice tracks to ensure the anti -lock brakes and traction
我们还在冰道上测试电子稳定控制系统，以确保防抱死刹车和牵引力
systems can prevent a slide.
系统可以防止侧滑。
Each of these seasonal tests takes several months because you have to wait for actual winter and
每一项季节性测试都需要几个月的时间，因为你必须等待实际的冬季和
summer conditions.
夏季条件。
A factory cold chamber cannot fully replicate driving on real icy highways for weeks at a time.
工厂的冷库无法完全复制连续几周在真正的冰雪高速公路上驾驶的情况。
That brings up an important point about software versus hardware.
这提出了一个关于软件与硬件对比的重要观点。
Modern smart cars are often marketed like smartphones on wheels.
现代智能汽车的营销方式通常就像带轮子的智能手机。
Companies promise that if there is a bug, they can just fix it later with an over -the -air software update.
公司承诺，如果出现漏洞，他们稍后可以通过空中软件更新来修复它。
Is it safe to treat a car like a smartphone app?
把汽 车当作智能手机应用来对待安全吗？
In my opinion, treating a car like a smartphone is a dangerous mindset.
在我看来，把汽车当作智能手机是一种危险的心态。
When a phone app glitches, your screen might freeze for a few seconds.
当手机应用程序出现故障时，您的屏幕可能会冻结几秒钟。
It is annoying, but safe.
这很烦人，但很安全。
When a two -ton vehicle traveling at high speed experiences a system failure, the risks are critical.
当一辆高速行驶的两吨重汽车发生系统故障时，风险是危急的。
Software updates are great for fixing navigation bugs or improving screen graphics, but you cannot
软件更新对于修复导航漏洞或改善屏幕图形非常有用，但你不能
fix physical hardware over the air.
无法通过空中修复物理硬件。
You cannot patch a weak suspension component, a faulty brake pedal, or poor airbag timing with a
你无法通过……来修补薄弱的悬挂部件、有缺陷的制动踏板或糟糕的安全气囊正时
software download after selling the car.
在销售汽车之后进行软件下载。
Mechanical safety must be completely proven before the first customer drives home.
在第一位客户把车开回家之前，必须完全证明机械安全性。
That is such an essential point for consumers to keep in mind.
对消费者来说，这真是个至关重要的要点。
Hardware safety cannot be patched remotely.
硬件安全无法通过远程打补丁来解决。
How do you think the new regulatory guidance will impact the automotive market?
你认为新的监管指导方针将如何影响汽车市场？
I believe these new policies bring balance back to the industry.
我相信这些新政策为行业带回了平衡。
Over the past few years, there was intense pressure to launch new models faster and faster.
在过去几年里，推出新车型的压力非常巨大。
That speed competition forced engineering teams to compress validation periods.
这种速度竞争迫使工程团队压缩验证周期。
The new guidelines send a clear message.
新的指导方针传递了一个清晰的信息。
Safety and quality validation cannot be sacrificed for speed.
不能为了速度而牺牲安全和质量验证。
Regulators are also cracking down on exaggerated marketing, making sure features like driver
监管机构也在严厉打击夸大宣传，确保诸如驾驶...
assistance are not falsely advertised as fully autonomous driving.
辅助功能不会被虚假宣传为完全自动驾驶。
In the long run, this protects consumers and improves vehicle reliability.
从长远来看，这保护了消费者并提高了车辆的可靠性。
For our listeners who might be shopping for a new car soon, what practical advice would you give
对于可能很快就要买新车的听众朋友们，你会给出什么实用的建议...
them to evaluate vehicle reliability?
来评估车辆的可靠性？
My top advice is to look beyond flashy screens and ambient lighting.
我的首要建议是不要只看浮华的屏幕和环境氛围灯。
Look into the vehicle's underlying platform history.
深入了解车辆底层的平台历史。
Is it built on an established architecture or an unproven new design?
它是建立在成熟的架构上还是未经证实的新设计上？
Second, check if the manufacturer shares details about real -world winter and summer testing.
第二，检查制造商是否分享了关于真实世界冬夏测试的细节。
Reliable automakers are proud to show proof of rigorous testing.
可靠的汽车制造商为能展示严苛测试的证据而自豪。
Finally, be cautious about buying the very first batch of a totally new vehicle model.
最后，谨慎购买全新车型的第一批次。
Giving a new car six months on the market allows early software or assembly quirks to be resolved.
给新车在市场上六个月的时间，可以让早期的软件或装配小毛病得到解决。
That is wonderful practical advice.
真是极好的实用建议。
Don't just get dazzled by big touchscreens.
不要被大触控屏所迷惑。
Ask about the real engineering underneath.
去了解背后的真实工程技术。
Today, we learned that while digital simulations speed up early car design, real, physical stress
今天我们了解到，虽然数字模拟加快了早期汽车设计，但真实、物理的压力...
testing in extreme environments is irreplaceable.
在极端环境下的测试是无可替代的。
Thorough validation ensures that innovative tech never comes at the expense of driver safety.
彻底的验证确保了创新技术绝不会以牺牲驾驶员安全为代价。
David, thank you so much for joining us today on TalkCast and sharing your engineering insights.
大卫，非常感谢你今天做客 TalkCast 并分享你的工程见解。
It was my absolute pleasure, Rachel.
这是我的绝对荣幸，蕾切尔。
Thank you for having me.
谢谢你们邀请我。
And now, it is time for our TalkCast listener question of the day.
现在，到了我们今天的 TalkCast 听众问答时间。
Based on our interview with David today, what does the technical acronym NVH stand for in automotive engineering?
根据我们今天对大卫的采访，在汽车工程中，技术缩写 NVH 代表什么？
And why is it important for vehicle comfort?
为什么它对车辆舒适性很重要？
Make sure to write down your answer in the comments section below, or take a look at the comments to
请务必将您的答案写在下方的评论区，或者看看评论区...
see what other listeners have shared.
看看其他听众分享了什么。
If you love listening to TalkCast and want to support our podcast, please consider becoming a
如果你喜欢听 TalkCast 并且想要支持我们的播客，请考虑成为...
TalkCast member.
TalkCast 会员。
Members get access to complete transcripts, vocabulary study guides, and bonus listening content
会员可以获得完整的文稿、词汇学习指南以及专为英语学习者设计的额外听力内容。
designed for English learners.
专为英语学习者设计的内容。
Don't forget to subscribe, share TalkCast with your friends, and leave us your feedback.
别忘了订阅，把 TalkCast 分享给你的朋友，并给我们留下你的反馈。
Thank you for listening, and we will see you in the next episode.
谢谢收听，我们下期节目再见。
