From 23 July 1941 to date, Jeep brand has been a symbol of true four-wheel-drive performance, innovation and continuous improvement. Today, Jeep has not only a household name, it is more than a technical off-road vehicle with a synonym. For more than half a century, it has successfully across borders reach the heart of many people in the car. Precisely because of this, Jeep vehicles have been sold in nearly 100 countries, with many Jeep enthusiasts. Open Jeep family history, we find that it is on the Jeep tradition and innovation unique personality forged the blood of the Jeep brand’s glory.
Domestic Jeep in the sale of cars and four-wheel drive form
At present, in the sale of Jeep brands include Compass, free passengers, Grand Cherokee, Wrangler, including four cars vehicle models, different models of each product positioning makes the four-wheel drive system in the form they used are different, specific categories in the table below:
Jeep four-wheel drive technology and sales models to explain models four-wheel drive system name in the form of four-wheel drive classification Compass 2.4 Freedom-Drive I
timely four-wheel drive
[123 ] free off 2.4 freedom-Drive I
timely four-wheel drive
Grand Cherokee 3.6 Quadra-Trac II full-time four-wheel drive Grand Cherokee 5.7 HEMI Quadra-Drive II full-time four-wheel drive Wrangler SAHARA Command- Trac four-wheel drive Wrangler Rubicon Rock-Trac four-wheel drive
freedom-Drive I ldquo; freedom-Drive Irdquo; this four-wheel drive system in the country to be equipped with the Compass and freedom the passenger, four-wheel drive system is a set of JEEP brand developed for urban traffic, are timely four-wheel drive, electronically controlled multi-plate clutch Structurally Center differential, front and rear axles are open differential, no lock mechanism, four alsoNo electronic brake assist. When
Daily running (mainly refers to driving on paved road), the driving force is transmitted only to the front wheels, driving wheel drive traction mode vehicle, then the computer monitor at any time where adhesion four wheels, if wheel slip occurs, the computer will automatically distributing power to the front and rear wheels at the same time, the torque can be adjusted within a certain range. In order to ensure that urban wet pavement or hard acceleration state guidelines are still safe and reliable performance. When complex road, open ldquo; four-wheel drive lock rdquo; function may be constant in the driving force distribution to front and rear wheels of 50:50.
“Guide to the equipment ldquo; Freedom-Drive Irdquo; official four-wheel drive system animated schematic
(right-click to play) ” [123 ] Freedom Drive II
Freedom Drive II with a simple point that is timely four-wheel drive low gear, the maximum wheel-drive system with Freedom Drive I except that a second-generation variable transmission (CVT2) of setting, this CVT transmission having a 19: 1 ratio of the difference, that is to say it can be simulated low speed ratio, to reduce the speed of the torque amplification effect.
Note: Free guest presented below for the North American version of the model, Freedom Drive II four-wheel drive system on the North American version of freedom customer is optional, while domestic passenger version of the free equipment is Freedom Drive I.
Freedom Drive II operation method Freedom Drive substantially the same as I, pulling the center armrest following 4WD LOCK switch the torque lock 50 : 50, and the shift lever L to stop, low speed can be realized, then the ESP system automatically shut down, and converted to an auxiliary braking for the off-road sections.
In driving off-road sections, FreedomDrive II than advantages Freedom Drive I is obvious. Simply put, if the Freedom Drive I is to improve road safety and handling, then the Freedom Drive II system is on this basis, by gear ratios and brake electronic aids for CVT intensity of the off-road capability pricey.
Since the low-speed gear position having a simulation, so the difficulty is reduced climbing sections can be more accurately controlled throttle for crawling slope.
In addition, electronic brake assist intensity Freedom Drive II is also better than the Freedom Drive I, so for the average cross-axis road, the customer can deal with freedom! In addition, the gear and start hanging L 4WD LOCK function, hill descent feature is automatically turned on, do not hit the brakes when going downhill can be guaranteed a safe range, this is the gospel for junior players, cross-country, in reducing the risk factor technically retains some fun.
turnaround on video free off: