單套58.5有比原廠省油的可能嗎? - 機車

By Carolina Franco
at 2021-12-22T13:47
at 2021-12-22T13:47
Table of Contents
如題,最近有整理老KDU引擎的打算
一般人若要換缸,只能換副廠鐵缸
不少都直上58.5,不上原廠缸徑
好奇請問:
1.單上58.5,頂多混合比或油針調濃一點,其它全原廠
2.騎車方式溫和,跟原廠缸正常騎法一樣(不因為升級了就手抽筋)
3.傳動已是省油的中尾設定(低轉巡航超好用)
若以1+2+3條件之下~「新58.5會比新52.4」還省油嗎?
聽過2種說法,恕在下物理沒學好,總覺得好像都有道理?
A說:52.4比較省油
58.5活塞變重、變大了,除了要多一點燃燒能量才推的動
就算相同油門開度,58.5吸氣量變大,油註定也噴比較多
B說:58.5比較省油
A說的沒錯,可是結果論來說~因為誠如A所說~
兩缸徑相同時速下,58.5可以較低轉速達到,相同里程之下會比較省油
轉速低了自然較省油,甚至還較低溫耐用
(一口氣吃很多次 VS 大口吃很少次...前者較操勞)
不知有沒有專業於引擎工程方面背景的版友可專業解惑一下?
謝謝
PS:很多版友改58.5,但大多有改供油/傳動/缸頭等..油耗心得可能不太準
本篇以1+2+3條件討論,謝謝分享經驗
--
一般人若要換缸,只能換副廠鐵缸
不少都直上58.5,不上原廠缸徑
好奇請問:
1.單上58.5,頂多混合比或油針調濃一點,其它全原廠
2.騎車方式溫和,跟原廠缸正常騎法一樣(不因為升級了就手抽筋)
3.傳動已是省油的中尾設定(低轉巡航超好用)
若以1+2+3條件之下~「新58.5會比新52.4」還省油嗎?
聽過2種說法,恕在下物理沒學好,總覺得好像都有道理?
A說:52.4比較省油
58.5活塞變重、變大了,除了要多一點燃燒能量才推的動
就算相同油門開度,58.5吸氣量變大,油註定也噴比較多
B說:58.5比較省油
A說的沒錯,可是結果論來說~因為誠如A所說~
兩缸徑相同時速下,58.5可以較低轉速達到,相同里程之下會比較省油
轉速低了自然較省油,甚至還較低溫耐用
(一口氣吃很多次 VS 大口吃很少次...前者較操勞)
不知有沒有專業於引擎工程方面背景的版友可專業解惑一下?
謝謝
PS:很多版友改58.5,但大多有改供油/傳動/缸頭等..油耗心得可能不太準
本篇以1+2+3條件討論,謝謝分享經驗
--
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