目前日期文章:200901 (5)

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If you are ordering a car and are not sure if you should get the SMG transmission(Sequential Manual Gearbox), the following information may be helpful in your decision:
  • A short test drive of any SMG car is not an accurate measure of how the car will feel over time. SMG's are entirely new and need to be driven in a way that is entirely different than what you are probably accustomed to. Most SMG owners learn over an extended time (30 days or longer) how to shift the car properly. It has a steep learning curve. Your brain needs time to "reprogram" the timing of everything, etc.
  • Because the SMG has an "automatic mode," many people compare this choice to the Steptronic transmission. This comparison is not an equitable one. It is more equitable to compare the SMG to a traditional manual that has a clutch pedal. If you are traditionally a buyer of automatics because you do not like to shift, you may be disappointed with the SMG. If you are traditionally a buyer of manuals, you may find that the SMG far exceeds your expectations but only after owning it past the individual learning curve.
  • In addition to upshifting, SMG's need to be downshifted by the driver (as opposed to allowing the SMG to downshift automatically because of impending strain on the drivetrain) to reach optimum performance and satisfaction. Just like driving a manual transmission, you need to keep the car in the proper gear relative to the vehicle's speed. The SMG will execute downshifts flawlessly by "blipping" the throttle to the required RPM before engaging the lower gear. In other words, it executes a perfect "heel and toe" downshift every time. This process prevents the car from becoming unbalanced and reduces the possibility of a loss-of-control situation. It's the downshifts that truly differentiate the SMG from both the traditional manual and the automatic transmission choices!

 

Additional informaton on how the Sequential Manual Gearbox works, including a short video, can be found in the BMW Technology Guide.

 

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成功,往往也是瓶無味、無色的慢性毒藥,讓你失去戒心。美國登山好手費雪(Scott Fischer),在第五次攀爬喜馬拉雅山聖母峰中喪生。最主要的原因是,他未能遵守「兩點鐘規則」,就是攻頂一定要在下午兩點前完成,不然就必須回頭,就算峰頂在望也一樣。費雪因為「不當的虛榮心」,認為「自己已有四次經驗,是可能的。」結果命喪喜馬拉雅山。曾經的榮耀,永遠的悲哀。他的故事,還成為美國華頓商學院的教材。

《成功者的地雷》作者神田昌典說過:企業不斷往前衝,持續擴展,但若積極過了頭,之前做過一個銷量很大的商品,接下來就想做更暢銷的,結果一定會碰上走過頭的正向思考。本來企業或組織並不具備這樣的能力,心態或技能等也沒有進一步提升,卻想承接更大的責任,就會分崩離析。

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1.車子自美國、日本、加拿大出口驗車須檢附的重要文件、加拿大ICBC上Plate no顯示是DEALER,無法驗車該怎麼辦,快來詢問CAR2TW吧,我們成功啦

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以下提供淺見供參:

1.再撐一下,先去車厰要個舊火星塞放在車上備用,上路行駛再遇熄火,就地嘗試發動,發動過程請猛踩油門,然後到排氣尾消,聞看看,是否有濃濃汽油味,有則大概表示油-氣-電中的"供油"沒事,若毫無油味,則自行找到汽油幫浦繼電器(引擎室中有塑膠黑盒,字樣應為FUEL....忘了),打開比對位置,找到後摸摸燙不燙,或直接拔掉彈彈搖搖,再插回試試,免工具免技術,但不保證一定有效,若還是沒效,就有三個可能:a.該繼電器老化但未全壞 b.汽油幫浦老化但未全壞要動不動 c.噴油嘴作動信號電壓異常(電腦未送信給噴油嘴)

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引擎機構的設計極為複雜,所要考量的因素很多,如何兼顧引擎效能下而能大幅降低引擎燥音量,一直是車輛製造廠商努力的目標,且在噪音法規日趨嚴格的今日,引擎噪音抑制基礎研究的重要性更是不在話下。

 

對於氣冷式二行程引擎或四行程引擎,在引擎氣缸頭及本體處皆有散熱鰭片以加速引擎的散熱,此散熱鰭片雖可有效協助引擎的散熱,卻也對引擎燃燒室內燃燒傳遞出的噪音造成明顯放大的效果,使得燃燒噪音貢獻量更大,尤其二行程引擎的動力頻率較高,又無複雜之氣門機構,使得其燃燒噪音貢獻量更為明顯。

為有效研究分析燃燒噪音的影響參數,以期適切控制引擎燃燒的噪音,正確實用的引擎燃燒噪音測試技術的建立,有其充分與迫切性。 引擎氣缸內燃燒室燃燒所造成的壓力變化為燃燒噪音之產生來源,探討氣缸頭、氣缸本體之頻率響應函數,及氣缸頭、燃燒室形狀與散熱鰭片型式對於燃燒噪音的影響,使對界研發或設計改良引擎本體時,能充分掌握噪音抑制問題的影響因素,這對業界關於引擎的基礎研發有相當大的幫助。

進口車噪音測試相關資訊分享

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92、95與98無鉛汽油之區別為何?車主應如何選擇適當的汽油?若選用錯誤會有何影響 ?
(1)主要區別在於辛烷值不同,辛烷值乃測定汽油抗震爆能力之指標,92無鉛汽油辛烷值為92,95無鉛汽油辛烷值為95;98無鉛汽油辛烷值為98。

(2)至於要如何選用適當的汽油,一般汽車駕駛人最好依據車廠之推薦採用適當辛烷值之汽油。(參考車主手冊上之說明),車齡較高的汽車因為積碳關係,引擎壓縮比會增加,對辛烷值之需求亦會提高,若覺得車子仍有爆震現象時,可改用較高辛烷之汽油。

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