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制動(dòng)器畢業(yè)設(shè)計(jì)外文翻譯-其他專業(yè)-文庫(kù)吧資料

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【正文】 All brakes work by friction. Friction causes heat which is part of the kiic energy conversion process. How they create friction is down to the various designs. Bicycle wheel brakes I thought I39。t a problem the brakes are changed after each race or weekend. But on a road car, this can eventually lead to brake rotor failure not what you want. I only mention this because of a lot of performance suppliers will supply you with drilled rotors for street cars without mentioning this little fact. Big rotors. How does all this apply to bigger brake rotors a mon sports car upgrade? Sports cars and race bikes typically have much bigger discs or rotors than your average family car. A bigger rotor has more material in it so it can absorb more heat. More material also means a larger surface area for the pads to generate friction with, and better heat dissipation. Larger rotors also put the point of contact with the pads further away from the axle of rotation. This provides a larger mechanical advantage to resist the turning of the rotor itself. To be st illustrate how this works, imagine a spinning steel disc on an axle in front of you. If you clamped your thumbs either side of the disc close to the middle, your thumbs would heat up very quickly and you39。suck39。ve ever watched Formula 1 racing, you39。s still to do with the pads getting too hot. With newer brake pad pounds, the pads transfer heat into the calipers once the rotors are too hot, and the brake fluid starts to boil forming bubbles in it. Because air is pressible (brake fluid isn39。t absorb any more heat so the brake pads heat up instead. In every brake pad there is the friction material that is held together with some sort of resin and once this starts to get too hot, the resin starts to vapourise, forming a gas. Because the gas can39。s the First Law of Thermodynamics, sometimes known as the law of conservation of energy. This states that energy cannot be created nor destroyed, it can only be converted from one form to another. In the case of brakes, it is converted from kiic energy to thermal energy. Angular force. Because of the configuration of the brake pads and rotor in a disc brake, the location of the point of contact where the friction is generated also provides a mechanical moment to resist the turning motion of the rotor. Thermodynamics, brake fade and drilled rotors. If you ride a motorbike or drive a race car, you39。 附 件 2:外文原文 The Brake Bible Brakes what do they do? The simple answer: they slow you down. The plex answer: brakes are designed to slow down your vehicle but probably not by the means that you think. The mon misconception is that brakes squeeze against a drum or disc, and the pressure of the squeezing action is what slows you down. This in fact is only part of the equation. Brakes are essentially a mechanism to change energy types. When you39。 盤式制動(dòng)器比鼓式制動(dòng)器好了一個(gè)數(shù)量級(jí)來(lái)使車輛制動(dòng),這就是為什么你會(huì)發(fā)現(xiàn)的現(xiàn)代幾乎所以汽車和摩托車都使用的是盤式制動(dòng)器。終于在 1954 年雪鐵龍推出先進(jìn)的 DS,成就了像自流平懸浮、 半自動(dòng)變速箱、 活動(dòng)前燈和復(fù)合車身盤式制動(dòng)器的第一次現(xiàn)代化身。在美國(guó)汽車創(chuàng)始人克羅斯利發(fā)明了我們目前熟知和喜愛(ài)的快車,就是 使用了很多類似的盤動(dòng)
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