下大禹嶺 沒用低速檔 應該很快就會燒焦味
下霧社 一路D檔 的確是還好~ 跟坡度還是有關係！
不是下坡開久就一定有問題~
giobling wrote:
一路D檔下坡很正常吧...(恕刪)
我是TDCI 6MTkhc7293 wrote:
請問各位前輩
小弟最近要添購油電車
心中有些疑惑
油電車並沒有低速檔
下坡要如何降低速度呢？
尋求大大解惑
Toyota的Hybrid，D檔B檔都可以，但B檔本身就是設計成增加煞車力道使用 — 即使電池已經充飽了，因此非常適合山路下山使用。
Using "B" Shift Position
The Prius uses an electronic transmission mode selector, similar to a gear shift on a conventional car. Unlike a conventional vehicle with modes P R N D 2 1 (park, reverse, neutral, drive, 2nd gear, 1st gear) the Prius has a power button, a park button, and a selector for modes R N D and B (reverse, neutral, drive, and engine-Braking).
In the course of normal driving, the driver NEVER needs to use 'B' mode (engine Brake mode). The techniques below are optional. 'B' mode is appropriate when descending long grades (i.e. descending down a mountain road), where if the driver uses the brake pedal to control the vehicle's speed, the vehicle's brake pads will overheat and fail.
In a normal vehicle, the driver handles that condition by slowing to an appropriate speed and shifting to a lower gear (2nd or 1st). This forces the vehicle to spin the engine faster than needed, "wasting" energy through vacuum losses but helping maintain a safe vehicle speed without overheating the brake pads.
In a Prius, the driver handles that condition by selecting "B" mode. This tells the Prius to attempt to emulate "engine braking" in a conventional vehicle. Depending on the vehicle's speed and the battery SOC (state of charge), the Prius will do this using regenerative braking and/or high-RPM zero-fuel-flow engine braking.
Engine braking is inefficient because it uses the engine as an air pump, converting kinetic energy into heat. Unnecessary regenerative braking is also inefficient because of energy conversion losses. (Regenerative braking is good when it replaces friction braking, but it's not as efficient as coasting at a constant speed.) Because of this, "B" mode will not recharge your batteries more efficiently than just braking and is not recommended for general driving. Just as you might downshift into 2nd gear when going down a long, steep hill to prevent brake damage, you can "downshift" into "B" mode on a Prius. "Shifting" is all electronic, so the system won't let you shift in a harmful way. (Even if you try to shift into reverse when moving quickly forward, you'll just end up in neutral.)
資料來源
另外，也請參考這篇完整的技術性討論。（需登入該論壇）
長下坡路段, 如何避免 prius 電池過充電
那時的情形是這樣的:
從武嶺到大禹嶺是很陡的下坡,就將檔位打入1檔,用引擎煞車將車子拖住慢慢滑
這時,在一個左轉彎處碰到一台大遊覽車要上山,只好選擇讓他先過.
於是將車子打入R檔將車子退到較寬廣處的路邊,在車子就定位時
將右腳從油門換到煞車踏板時,因為坡度太陡,向下的力量太大
車子向下滑了一下(也就是往前滑動),其實這時候車子已經熄火了
(我判斷在R檔,車子往前移動,電腦認為不合理,所以熄火)
而我不知道車子 已經熄火了,等遊覽車過去後,我就打入1檔讓車子慢慢的往下滑
當時,立刻不對,車子的速度太快了,要轉向,方向盤很重.不對,車子熄火了.
立刻,用力踩煞車,拉手煞車,排N檔,轉電門發動,還好反應快,
車子一發動後,煞車力道就正常.馬上停路邊,先抽根菸,壓壓驚!!
Tortoise25 wrote:
另外, "應"使用 而不是 "因"使用
你國文老師常請假嗎？ 這可不是選錯字喔~ 連注音都是錯的...(恕刪)
這已經提醒到不想再提醒了~
注音沒學好的鄉民很多
freeshadow wrote:
好幾年前在武嶺要下到大禹嶺的路上也發生一次熄火,還好有意識到熄火間處理得當.
那時的情形是這樣的:
從武嶺到大禹嶺是很陡的下坡,就將檔位打入1檔,用引擎煞車將車子拖住慢慢滑
這時,在一個左轉彎處碰到一台大遊覽車要上山,只好選擇讓他先過.
於是將車子打入R檔將車子退到較寬廣處的路邊,在車子就定位時
將右腳從油門換到煞車踏板時,因為坡度太陡,向下的力量太大
車子向下滑了一下(也就是往前滑動),其實這時候車子已經熄火了
(我判斷在R檔,車子往前移動,電腦認為不合理,所以熄火)
而我不知道車子 已經熄火了,等遊覽車過去後,我就打入1檔讓車子慢慢的往下滑
當時,立刻不對,車子的速度太快了,要轉向,方向盤很重.不對,車子熄火了.
立刻,用力踩煞車,拉手煞車,排N檔,轉電門發動,還好反應快,
車子一發動後,煞車力道就正常.馬上停路邊,先抽根菸,壓壓驚!!...(恕刪)
結論還是開純手排的車安全.
你跟我說自排車在坡道上熄火，我可能還反應不過來~
手排車就煞車踩住，離合器踩住，關電門>重新發動就OK
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