swallowman wrote:
充氣睡墊....看來...(恕刪)
大大的這個比喻感覺還滿像的
拖鞋與運動鞋的差別
我用lock只有那麼一小段路，感覺沒有那麼明確
雖然覺得有比較"機靈"一點，但是不知道是不是心理作用
畢竟只有開一小段路!
下回再來開長距離點感受看看~
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swallowman wrote: 有那種sensor能做到這種判斷呢?^^",另一個說法是lock為前後50%鎖定,當時速高於40還是60時會自動跳到auto,這種講法可性度較高且合理
...(恕刪)
官方網站看到的， 請看第三段， 在4wd lock模式下, 的確是自動判斷前後輪扭力輸出， 甚至可以比 4wd auto 送出更多的扭力至後輪。
Mitsubishi’s AWC philosophy for the second generation Outlander introduced in 2005 combines an electronically controlled four-wheel drive with an Active Skid and Traction Control (ASTC) system. Mitsubishi used an aluminum roof to lower the center of gravity for better handling response. The Outlander is also available with standard front-wheel drive layout that also included the ASTC system. The previous Outlander employed a 50:50 full-time four-wheel drive system using a viscous coupling center differential. Mitsubishi decided to use the AWC system on the new Outlander that offers three vehicle drive modes and proactively reduces the likelihood of wheel slippage.[21]
The driver can use a drive-mode dial on the center console to select “FWD” for best fuel economy; with “4WD Auto” mode selected, the system uses a rear-mounted electronically controlled transfer clutch to automatically and seamlessly route more power to the rear wheels, depending on driving and road surface conditions. The driver can freely change the drive mode at any time. When “4WD Auto” mode is selected, the Outlander's 4WD system always sends some power to the rear wheels, automatically increasing the amount under full throttle acceleration. The coupling transfers up to forty percent of available torque to the rear wheels under full-throttle acceleration, and this is reduced to twenty five percent over 40 miles per hour. At steady cruising speeds, up to fifteen percent of available torque is sent to the rear wheels. At low speeds through tight corners, coupling torque is reduced, providing a smoother feel through the corner.[21]
For driving in particularly challenging conditions, such as snow, the driver can select “4WD Lock” mode. In Lock mode, the system still apportions front and rear torque automatically, but enables greater power transfer to the rear wheels. In dry conditions, 4WD Lock mode places priority on performance. More torque is directed to the rear wheels than in 4WD Auto mode to provide greater power off the line, better control when accelerating on snowy or loose surfaces, and enhanced stability at high speeds. Rear wheel torque transfer is increased by 50 percent over the amounts in 4WD Auto mode – meaning up to 60 percent of available torque is sent to the rear wheels under full-throttle acceleration on dry pavement. When in 4WD Lock mode, torque at the rear wheels is reduced by a smaller degree through corners than with 4WD Auto mode.[21]
The new Outlander features standard ASTC system on all models, unlike the previous-generation. ASTC helps to prevent side slipping (spin and side drift) as a result of sudden steering wheel operation or on slippery roads. Overall vehicle stability is enhanced in all driving conditions. In front-wheel drive Outlander models – and under all driving modes in four-wheel drive models – ASTC helps keep the vehicle traveling in the driver’s intended direction. The ASTC system takes data input from a number of sensors, including steering angle, individual wheel speed and yaw, as well as from the powertrain electronic control unit (ECU). When it detects side-slipping or wheel spin, ASTC provides integrated control of brakes, engine torque (via the electronic throttle control), transmission and electronically controlled four-wheel drive to improve vehicle stability.[21]
Hi, I am Joco!
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justmotor wrote:
原來lock還是...(恕刪)
新款的 outlander (尚未引進國內) 甚至在 2WD mode 下, 會自動偵測行駛狀況, 依據需求, 自動切入 4WD mode, 加強循跡能力. 其實 outlander 的 2WD/4WD auto/4WD lock 均為電子式切換, 行車電腦要主動介入行駛模式, 的確是做得到的!
這種方式似乎有一點點像是 Honda CRV 的適時4輪傳動, 平時是 2WD 行駛, 減少油耗, 需要時, 再主動介入啟動 4WD, 只不過 CRV 的 realtime 4WD 介入時機的判斷似乎不佳, 才會讓人認為 CRV 的 real time 4wd 形同虛設,
此外 outlander 還可以手動切換行駛模式(這好像是 CRV 所不能的)
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