Показания спидометра почти всегда отличаются от истинных значений скорости. И сделано это сознательно.

Сразу скажем, что если автомобиль исправен и он не подвергался никаким переделкам, то показания его спидометра не такие-то уж и неточные. Они всегда соответствуют требованиям ГОСТ и ЕЭК ООН. Однако здесь же содержится и ответ на вопрос: средняя погрешность спидометра, как и одометра, может быть только положительной! И никогда отрицательной. Иными словами, спидометр категорически не имеет права занижать вашу скорость! А вот завышать — пожалуйста: процентов на 5–10. Есть точная формула: кому интересно, обращайтесь, например, к ГОСТ Р 41.39–99 (пункт 5.3).

Зачем это нужно? Современные спидометры, как и любые измерительные приборы, теоретически не могут быть абсолютно точными (GPS оставим в покое — в тоннелях спутников вообще не видать). А поскольку занижать скорость запрещено, инженеру-разработчику остается одно: заложить погрешность в «плюс». Именно это и сделано во всех серийных автомобилях. Почему же спидометр не имеет права занижать скорость? Дело в безопасности: неопытный водитель может решить, что едет «слишком медленно». А это добром не кончится.

Остальные причины «вранья» спидометров тоже лежат на поверхности. Низкое или завышенное давление в колесах тут же отразится на их показаниях. К примеру, спущенным колесам для достижения нужной скорости придется вращаться быстрее, а потому прибор будет показывать больше, чем при нормальном давлении. При установке докатки меньшего диаметра спидометр тоже начнет показывать чуть больше. А если, к примеру, установить на жигули короткую главную пару вместо длинной, то фактическая скорость машины при той же частоте вращение коленвала уменьшится, хотя спидометр, связанный с выходным валом коробки передач, станет показывать то же, что и при длинной паре. Реальная скорость при этом будет им завышаться.

23 Thoughts to “Ваш спидометр врет!”

  1. I am really loving the theme/design of your weblog.
    Do you ever run into any web browser compatibility issues?
    A handful of my blog audience have complained about my website not operating correctly in Explorer but looks
    great in Opera. Do you have any suggestions to help
    fix this issue?

  2. constantly i used to read smaller articles or reviews which also clear
    their motive, and that is also happening with this post which I am reading at this time.

  3. Incredible! This blog looks just like my old one! It’s on a completely different subject but
    it has pretty much the same page layout and design. Superb choice of colors!

  4. Good day very nice site!! Man .. Excellent .. Wonderful
    .. I’ll bookmark your web site and take the feeds also? I am glad to find so many useful information right here within the put up, we’d like work out
    extra techniques in this regard, thank you for sharing.
    . . . . .

  5. That is really fascinating, You are an overly professional blogger.
    I’ve joined your rss feed and sit up for in the hunt for extra of your magnificent post.

    Also, I have shared your website in my social networks

  6. I visited several websites except the audio quality for audio songs existing at
    this web page is actually superb.

  7. Hi there, I would like to subscribe for this weblog to take
    most up-to-date updates, so where can i do it please
    assist.

  8. I am curious to find out what blog system
    you are utilizing? I’m experiencing some minor security issues with my latest blog and I’d like to find something more safe.
    Do you have any suggestions?

  9. After I initially left a comment I appear to have clicked the
    -Notify me when new comments are added- checkbox and from now on whenever a comment is added I recieve 4 emails with the exact same comment.
    Is there a means you are able to remove me from that service?
    Cheers!

  10. Greetings from Idaho! I’m bored to tears at work so I decided to browse your website on my iphone during
    lunch break. I enjoy the knowledge you present here and can’t wait to take a look when I get home.
    I’m amazed at how fast your blog loaded on my phone .. I’m not
    even using WIFI, just 3G .. Anyways, wonderful blog!

  11. I visited many websites however the audio feature for audio songs existing at this site is really excellent.

  12. Hi there! I know this is somewhat off topic but I was wondering which blog platform are you using for this site?
    I’m getting tired of WordPress because I’ve had issues with hackers and I’m
    looking at alternatives for another platform. I would be awesome if you could point me in the direction of
    a good platform.

  13. This blog was… how do I say it? Relevant!! Finally I’ve found something which helped
    me. Thanks!

  14. Woah! I’m really enjoying the template/theme of this site.
    It’s simple, yet effective. A lot of times it’s very
    difficult to get that «perfect balance» between user friendliness
    and visual appearance. I must say you have done
    a superb job with this. Additionally, the blog
    loads very fast for me on Firefox. Exceptional Blog!

  15. Fine way of explaining, and nice paragraph to take facts about my presentation focus,
    which i am going to present in institution of higher
    education.

  16. Just want to say your article is as surprising.
    The clarity in your post is simply spectacular and i can assume you’re an expert
    on this subject. Fine with your permission let me to grab your RSS feed to keep
    up to date with forthcoming post. Thanks a million and please carry on the gratifying work.

  17. Can I simply say what a relief to uncover somebody that genuinely understands what they are talking about
    on the internet. You certainly know how to bring an issue to
    light and make it important. More and more people must read
    this and understand this side of your story. I was
    surprised that you aren’t more popular given that you
    most certainly have the gift.

  18. I go to see each day some blogs and blogs to read posts, however this weblog offers feature based articles.

  19. I am actually thankful to the owner of this website who has shared this impressive post at at this time.

  20. What’s up, just wanted to mention, I loved this
    post. It was helpful. Keep on posting!

  21. I’m curious to find out what blog system you happen to be using?

    I’m experiencing some small security issues with my latest website and I’d like to find something more
    safe. Do you have any solutions?

  22. It is really a great and helpful piece of information. I am satisfied that you just shared this helpful info with us.
    Please keep us informed like this. Thanks for sharing.

  23. Can you tell us more about this? I’d love
    to find out more details.

Leave a Comment