渦輪車為什麼是趨勢 - 保養
By Bennie
at 2017-07-14T22:44
at 2017-07-14T22:44
Table of Contents
卡諾循環聽過沒
熱力學第二定律指出
所有熱機的熱效率
均有一個基本的上限值
即使是一個
沒有摩擦力的理想熱機
也無法將輸入的熱
完全轉換為機械功
熱效率的上限
和熱機輸入熱的溫度(熱源溫度)
及熱機的環境溫度(冷源溫度)
有關
其中熱源溫度越高效率越好
所以一個理想熱機
燃燒溫度越高
效率越好
而渦輪引擎在進氣增壓下
就等同類似提高縮比的效果
燃燒溫度越高
效率越好
渦輪引擎在提高轉速時剛好
可以提供這個特性
低轉速時進氣壓力雖降低
但排氣量比大排NA引擎小
所以省油
除了省油外
另外其他的優勢是
同馬力之下的引擎體積和重量
比大排氣量NA引擎小很多
所以引擎室可以做小
車內空間變大
稅金優勢當然也是其中之一
至於保養花更多錢
好像也還好
目前渦輪引擎也蠻久了
沒很少聽過掛引擎的災情
自動變速箱壞的比例還比較高
照你這樣講
大家還是回去開手排
最便宜
※ 引述《ape0621 (傑)》之銘言:
: 在日本 油電車才是趨勢
: 在歐洲之前是柴油車是趨勢
: 渦輪是近來才變趨勢的
: 但是你們知道車廠為什麼要推嘛
: 因為消費者喜歡動力強 又省稅金
: 但是隱藏在後面的是甚麼
: 是 保養必須花更多的錢 東西更不耐用
: 車子更換的時間縮短 保養廠可以賺更多的維修費
: 所以說這是雙贏阿
: 只有政府虧錢沒有賺到稅金
: 哈哈
--
熱力學第二定律指出
所有熱機的熱效率
均有一個基本的上限值
即使是一個
沒有摩擦力的理想熱機
也無法將輸入的熱
完全轉換為機械功
熱效率的上限
和熱機輸入熱的溫度(熱源溫度)
及熱機的環境溫度(冷源溫度)
有關
其中熱源溫度越高效率越好
所以一個理想熱機
燃燒溫度越高
效率越好
而渦輪引擎在進氣增壓下
就等同類似提高縮比的效果
燃燒溫度越高
效率越好
渦輪引擎在提高轉速時剛好
可以提供這個特性
低轉速時進氣壓力雖降低
但排氣量比大排NA引擎小
所以省油
除了省油外
另外其他的優勢是
同馬力之下的引擎體積和重量
比大排氣量NA引擎小很多
所以引擎室可以做小
車內空間變大
稅金優勢當然也是其中之一
至於保養花更多錢
好像也還好
目前渦輪引擎也蠻久了
沒很少聽過掛引擎的災情
自動變速箱壞的比例還比較高
照你這樣講
大家還是回去開手排
最便宜
※ 引述《ape0621 (傑)》之銘言:
: 在日本 油電車才是趨勢
: 在歐洲之前是柴油車是趨勢
: 渦輪是近來才變趨勢的
: 但是你們知道車廠為什麼要推嘛
: 因為消費者喜歡動力強 又省稅金
: 但是隱藏在後面的是甚麼
: 是 保養必須花更多的錢 東西更不耐用
: 車子更換的時間縮短 保養廠可以賺更多的維修費
: 所以說這是雙贏阿
: 只有政府虧錢沒有賺到稅金
: 哈哈
--
Tags:
保養
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