ysc_kyy wrote:
高速公路時的油耗表現也有類似的道理，高速時開啟引擎的時間比較多所以油耗也
不甚漂亮，可是高速時若動力許可還可以對電池充電，所以下高速公路之後市區道路
就可利用電池多走些路程，這些電力的來源就是剛剛在高速公路充電來的，所以測量
油耗也要將高速、低速算在一起才客觀，就如同上下坡一樣。
連續高速的情況下，PRIUS 表現依然比較好，這個應該不是因為你講的，跑高速下來以後，可以用剛剛跑高速的時候所充的電。
之所以會比較好的原因，有人說因為 Prius 的引擎有特殊設計過，在高速行駛運轉的時候，會和電動引擎一起運作，這樣子會讓汽油引擎保持在最高效率的運轉狀態，因此可以比較省油。如果是這樣子，只能說這已經有點未來車的味道，因為軟體、電腦在 PRIUS 車上扮演的功能已經遠遠的超越傳統汽車。
hycsve wrote:
I want to ...(恕刪)
Hi hycsve,
You posted a seris of good articles here, and I dont know if you can introduce more about hybrid engine.
The most question in my head is why hybrid in the Europe is not as popular as it is in the US. The green cars are dominated by Diesel or Hybrid technologies in the modern days. And, we will have more and more choices of those green cars in Taiwan, too.
Will you give some opinions about the comparsion between Diesel and hybrid, and tell us why most American choose hybrid as green car solution, but not Diesel.
Thank in advance.
acer wrote:
Hi hycsve,...(恕刪)
I am still a rookie driver of Prius (only 3000KM). The more detail information you can find is from John's Prius and Prius Chat
The engine in Prius is 1.5L Atkinson cycle engine, but most cars use Otto cycle engines (larger power output in the same volume). The advantage of Atkisn cycle engine is the fuel economy, but the power output is lower (only 76HP for 1.5L in Prius which is compensated by the extra power from electric motors, MG1 and MG2). The engine in Prius can always run in the optimum RPM to provide the power and charge the main battery at the same time. Most people think the main battery is not working in the highway driving. But in fact, the main battery works from you started the car.
Yes. the computers (>13 control units) in Prius are responsible for the all taks including everything you can image.
In addition, the lower Cd (coefficient of drag) in Prius 0.26 ( the lowest Cd in the market) also help the gas consumption in highway driving.
The emmisions in Prius passed AT-PZEV (Advanced Technology - Partial Zero Emission Vehicle) standard. 90% less NOx (Nitrogen Oxide) than average
50% less CO2 (Carbon Dioxide) than average.
But diesel can not pass the the emmision law in California and New York states, so diesel cars were not allowed to sell in those states.
一個最簡單的道理，市區行駛時，常常遇到紅綠燈，一般柴油車，踩煞車，但引擎仍持續運轉，hybrid 油引擎可以利用這時候對電池做charge，以便綠燈時可已有足夠的動力行駛。
高速公路（定速行駛） 85 KM/HR ，一公升跑20KM，對汽油車並不是難事（如果車子不重，...等條件配合），hybir這方面是討不到便宜，但如果像台灣的高速高路，常常假日時也是走走停停，那就討了便宜了。當然複雜的說，要做到這點必須要有複雜的軟體，控制特殊的引擎，及馬達，還有充電儲電設備。
When you stop at red light, the engine in Prius will showdown.
Prius (~1350Kg) is a midsize car which is heavier than Corolla (Altis in Taiwan). The design in engine, battery, ECVT, lower Cd, and control units all contributed to the good performance of gas consumption even in the highway driving.
I can get more than 45MPG (>19KM/L) in 65MPH (miles per hour , >100KM/hour) in highway driving. Some people in Germany (no speed limit highway) drove at the maximum speed 107~108MPH (>170KM/hour) and got around 20MPG.
The most effecient speed for Prius is betwwen 30~40 MPH (48~64 KM/hour), five men had done an interested test and achieved 1397 miles on a single 12.78 gallon tank of gas. That is a whopping 110 miles per gallon! (> 46KM/L)
Prius 110MPG
kuoch wrote:
一個最簡單的道理，市區行駛時，常常遇到紅綠燈，一般柴油車，踩煞車，但引擎仍持續運轉，hybrid 油引擎可以利用這時候對電池做charge，以便綠燈時可已有足夠的動力行駛。
高速公路（定速行駛） 85 KM/HR ，一公升跑20KM，對汽油車並不是難事（如果車子不重，...等條件配合），hybir這方面是討不到便宜，但如果像台灣的高速高路，常常假日時也是走走停停，那就討了便宜了。當然複雜的說，要做到這點必須要有複雜的軟體，控制特殊的引擎，及馬達，還有充電儲電設備。
不好意思，不是故意要兔朝.. But
1. 除非電力過低，否則 hybrid 在等紅燈的時候，汽油引擎是不會運作的。她是利用煞車來充電，而不是靠待轉來充電。
2. 至於你講的，一公升跑 20KM，對95%以上的汽油車來講絕對是很困難的事情，隨便一台國產車，都*無法*開出這種數字，不管狀況多麼理想都不可能，除非是被拖吊。
3. hybrid 就是要走走停停，才可以佔到便宜。就算不走走停停，hybrid 還是可以佔到便宜。你可以去查資料，查使用者經驗，Prius 的油耗表現硬是比 Vios 還要好，就是實證。
ps. 建議：如果不清楚的話，用問的，會比較妥當。因為離事實和實證狀況太多了一些。
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