一般汽車機油不好用嗎? - 機車

By Tom
at 2023-05-22T20:14
at 2023-05-22T20:14
Table of Contents
今天去車行保養 自備機油 付工資
拿上個月買的嘉實多GTX Pro 5W-40 API SN半合成機油 1L瓶裝
車行的人在要加機油的時候看了瓶子說這不是機車機油吧
然後說這個不好 下次不要用
機車引擎轉速高9000轉 汽車轉速低幾千轉
都是四行程引擎機油呀
大廠半合成機油不會比礦物油15W-40或20W-40 一瓶零售價格$90~100的好嗎?
摩托車引擎和汽車引擎的機油溫度應該不會差很多吧?
摩托車引擎體積緊湊缸徑大衝程短 汽車引擎體積大衝程長 缸徑比例相對小
兩種設計上特性不同 缸徑大容易高轉速 衝程長扭力大轉速較低
活塞移動速度計算上接近不見得差很多
Jet SL 9000rpm 活塞運動均速應該是16.95m/s
2.0L 家用汽車引擎 6000rpm 活塞運動均速18.24m/s
汽車引擎衝程長轉速到6000rpm活塞運動均速反而還比較高
關於轉速我還想到 有的人會說曲軸轉速和凸輪軸轉速
摩托車引擎體積小排氣量小馬力小
曲軸和凸輪軸的尺寸直徑和周長會比較小
汽車引擎體積大排氣量大馬力大
曲軸和凸輪軸的尺寸直徑和周長也會比較大
引擎轉速*曲軸或凸輪軸周長計算獲得圓周運動的速度
汽車引擎很可能曲軸和凸輪軸圓周運動速度比摩托車引擎高
後來回家看到保養紀錄表寫"10W-30" 亂紀錄標號不對
在店裡看到另一個人的車 迪爵125
前輪碟煞剎車片磨光剩下鐵片
車主他說還是有煞車力 只是有怪怪的聲音
--
拿上個月買的嘉實多GTX Pro 5W-40 API SN半合成機油 1L瓶裝
車行的人在要加機油的時候看了瓶子說這不是機車機油吧
然後說這個不好 下次不要用
機車引擎轉速高9000轉 汽車轉速低幾千轉
都是四行程引擎機油呀
大廠半合成機油不會比礦物油15W-40或20W-40 一瓶零售價格$90~100的好嗎?
摩托車引擎和汽車引擎的機油溫度應該不會差很多吧?
摩托車引擎體積緊湊缸徑大衝程短 汽車引擎體積大衝程長 缸徑比例相對小
兩種設計上特性不同 缸徑大容易高轉速 衝程長扭力大轉速較低
活塞移動速度計算上接近不見得差很多
Jet SL 9000rpm 活塞運動均速應該是16.95m/s
2.0L 家用汽車引擎 6000rpm 活塞運動均速18.24m/s
汽車引擎衝程長轉速到6000rpm活塞運動均速反而還比較高
關於轉速我還想到 有的人會說曲軸轉速和凸輪軸轉速
摩托車引擎體積小排氣量小馬力小
曲軸和凸輪軸的尺寸直徑和周長會比較小
汽車引擎體積大排氣量大馬力大
曲軸和凸輪軸的尺寸直徑和周長也會比較大
引擎轉速*曲軸或凸輪軸周長計算獲得圓周運動的速度
汽車引擎很可能曲軸和凸輪軸圓周運動速度比摩托車引擎高
後來回家看到保養紀錄表寫"10W-30" 亂紀錄標號不對
在店裡看到另一個人的車 迪爵125
前輪碟煞剎車片磨光剩下鐵片
車主他說還是有煞車力 只是有怪怪的聲音
--
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