充氣輪胎內部溫度量測與分析

The Measurement and Analysis of Temperatures Inside Tire

楊立楠(Li-Nan Yang)

指導教授 ： 吳澤松

崑山科技大學/工程學院/機械工程研究所/碩士(2006年)

摘要

輪胎是車子與地面接觸重要媒介，且輪胎承受相當大的載重，攸關乘客安全，尤其輪胎的溫度升高會引起爆胎。一般而言，輪胎內部的溫度與輪胎的負荷和速度成正比，速度越高，負荷越大，溫度上升越快，同時若輪胎氣壓過低，輪胎徑向變形大，滾動阻力增大，溫度隨之升高，因此本研究採用自行設計製作輪胎試驗機，搭配溫度記錄器，進行探討研究輪胎在100、200、300rpm轉速、充氣胎壓在20、27、35psi與負荷在0、300、400kg等參數條件下之輪胎內部溫升現象。並將輪胎內部溫升結果透過電腦軟體讀取分析，以有效的分析輪胎溫升現象。
由實驗分析結果，可知：
當胎壓為35psi，負荷為400kg時，輪胎運轉速度100rpm、200rpm、300rpm溫升分別為7.7℃、10.7℃、13.1℃，因此轉速對溫升影響變化很大，當轉速增加時，溫升隨之增加，且溫升的差異性逐漸變大。轉速300rpm，負荷為400kg時，胎壓20psi、27psi、35psi溫升分別為12℃、11.7℃、10.7℃，輪胎充氣胎壓對溫升影響變化很大，胎壓下降輪胎變形，造成輪胎摩擦面積改變，胎壓20psi、27psi與35psi三個參數中，發現較低胎壓溫升較高。當轉速300rpm，充氣胎壓35psi當負荷增加0kg、300kg、400kg溫升10.9℃、12.4℃、13.1℃，輪胎的變形量也隨之增加，輪胎摩擦面積隨之改變，尤其高轉速、高負荷輪胎溫升現象更為明顯。若與文獻數值模擬結果比較：當充氣胎壓30psi、轉速30km/hr、負荷4kN文獻之溫升為11℃，本實驗在充氣胎壓35psi、轉速32km/hr、負荷400kg之溫升10.9℃，數值模擬數值與實際量測溫升數值相近。

關鍵字

輪胎試驗機 ； 溫升 ； 輪胎內部溫度

並列摘要

The tire is an important medium of car and the ground contact. Tire has relation to the passenger’s security. The temperature of the tire rising up can cause the inner part of the tire burden. While the speed is higher, carrying more heavy, the temperature is rising quickly. The tire air pressure leads low, roll over the resistance aggrandizement, the temperature immediately goes up. A tire testing rig was designed and constructed in the study by ourself. A temperature recorder was put inside the tire to measure air temperature of inner tire at 100, 200, 300rpm speed, tire pressure were at 20, 27, 35 psi and loaded at 0, 300, 400kg. The tire internal temperature rises were recorded and analysed through the computer software.
The test results showed that.
When the tire pressure was 35 psi, loaded at 400kg, the tire operation speed at 100 rpm, 200 rpm, 300 rpm, temperature rising were 7.7 ℃, 10.7 ℃, 13.1 ℃ respectively, temperature rising was influenced very greatly by tire speed. When the tire pressure were 20 psi, 27 psi, 35 psi, temperature rising were 12 ℃, 11.7 ℃, 10.7 ℃respectively. The lower pressure was down to decline the tire to transform, causing tire rub area change, and then it was found that the higher temperature was obtained under lower tire pressure. The conditions of 300 rpm, 35 psi and loaded at 0kg, 300kg, 400kg, the temperature rises of 10.9 ℃,12.4 ℃,13.1 ℃ respectively. The results were compared with other simulation study at similar operation condition. The temperature rising was very closely.

並列關鍵字

Tire Testing Rig ； Air Temperatures in the Tire ； Temperature rising

參考文獻

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