[YesAuto Test Drive] When it comes to Jeep products, I believe many people will think of the word “off-road”. Recently, at the “2009 Jeep Wind and Cloud Ceremony” event, we tested and drove many Jeep models such as Grand Cherokee, Commander, Wrangler, etc. Series products, and different from the simple field experience in the past, we drove the Jeep series products on a cross-country road in this test drive: “crossed” an earthquake valley and “climbed” two mountains, let us now Take a look at their performance!
● Traveling through the earthquake valley and encountering a small accident
First of all, we have to drive the Jeep series products through an earthquake valley. This is the rift formed during the Lijiang earthquake in 1996. Although the length is only about 3 kilometers, the lines inside are relatively difficult and dangerous. Between the boulders and mounds, the narrowest place can only barely pass a car, which poses a big challenge to the driver's experience and skills.
Whether it is the Grand Cherokee, the commander, the Sahara Wrangler, Robin Hood Wrangler, they are all equipped with Jeep four-wheel drive system, and also equipped with a central transfer case, front and rear two differential locks, in the case of some wheels slipping , It can also transmit power to the rest of the wheels. If necessary, it can even transmit 100% of the engine torque to one wheel. This also reflects the self-relief ability of Jeep products in a small accident.
Shortly after driving into the Earthquake Valley, the car in front suddenly stopped. When we were wondering, a voice came from the intercom in the car: “A Jeep Wrangler Sahara has fallen into the ditch. The convoy cannot move forward. Please wait patiently.” Hearing this, we were a little worried, so we got out of the car and walked forward to find out the situation. When we arrived at the “accident” scene, we saw a Wrangler Sahara “slanted” to the left, the left rear part of the car body had completely fallen into a ditch of about 1.2 meters, and the right rear wheel had also been pulled out a little “outside the character”. “Now, several staff members stood on the pedals on the right outside the car to prevent the vehicle from continuing to slide down, while evacuating the occupants in the car.
The occupants in the car are safe, but how can we get the car out of trouble? Some media colleagues said anxiously: “Hurry up and drive the car behind and use the winch to pull the car out.” After observing the situation of the Wrangler Sahara, the staff said calmly: “Please don't worry, this This situation just made everyone see how Sahara got out of trouble.” After that, he asked four staff members to stand on the pedals on the right side of the car, enter the cab by themselves, put on the low-speed four-wheel drive 4L, adjust the steering wheel, With the brakes and throttle, Jeep Wrangler Sahara quickly got out of the predicament and embarked on the “right path”. Some people may say that this situation can also be dealt with with other off-road vehicles, but I think this is just a “show” for the Wrangler to deal with harsh environments. I believe that even more extreme situations are also trustworthy.
After the earthquake, the road becomes undulating and covered with large and small gravel. When driving a vehicle on this road condition, the wheels are very easy to slip. At this time, it is best to refuel slowly and steadily and use idle speed as much as possible. In order to maintain sufficient grip of the tire on the gravel road, reduce the idling and slip of the wheel, hold the steering wheel at the same time, and pass slowly with the feedback of the tire bump. Of course, a professional off-road tire is also essential.
Speaking of tires, in addition to contacting the ground, when the vehicle is traveling on a narrow road, the driver should always pay attention to the contact between the sidewall of the sidewall and stones and other objects. For example, in the earthquake valley, the commander with a slightly wider car body and other models The tires often rub against the boulder next to it. At this time, the driver is required to be optimistic about whether the boulder is sharp and not to force it through to avoid damage to the tires.
Driving in such a low canyon will inevitably encounter wading conditions such as puddles. Although it did not appear during the test drive, it is still necessary to provide you with a simple technique for wading vehicles: Observe the water depth After confirming that the vehicle can pass, drive the vehicle smoothly into the water from the shore to avoid splashing. Maintain a uniform throttle in the water to provide enough power for the engine. Do not shift or stop in the middle, and pass slowly and at a constant speed.
After more than half an hour of careful and patient driving, our Jeep fleet finally drove out of the earthquake valley. The short 3 kilometers of “earth and rock roads” allowed us to learn a lot of off-road knowledge, which can be regarded as a work for driving Jeep vehicles over two mountains. Just “warm up”.
● When driving up a mountain, you have to get out if you have no way
If the Grand Cherokee and the commander in Jeep products can easily deal with the road conditions in the earthquake valley, then “climbing” is a very big challenge for them, and even the Wrangler should take it seriously because of this “road”. “The situation is very complicated: gravel, steep slopes, dirt roads, deep trenches, forest roads… What’s more dangerous is that one side of the “road” that can only allow a car to pass is a cliff and the other is a cliff. Car crashes and deaths are dangerous, so not only must the vehicle be reliable, but off-road driving skills must also be passed.
In order to successfully complete the off-road experience activities of Jeep products, the organizer has conducted a training on off-road skills and methods before that. Let us first understand some of the content. Passing a side slope: When driving a vehicle on a slope with an inclination of about 45°, keep the body parallel to the top edge of the slope before entering. Due to inertia, you will feel that the body will tilt toward the bottom of the slope. Always stabilize the steering wheel to ensure that the wheels point to the top of the slope and pass slowly at a constant speed.
Passing through cannonball craters and cross-axis roads: As the road conditions of off-road roads are very poor, potholes are very common, and sometimes cannonball craters are formed. Crossing axles are easily generated when passing through these roads, that is, the two diagonals The wheels were simultaneously trapped in the crater. When passing this kind of road section, the first thing to do is to avoid the generation of cross axles as much as possible. If a cross axle occurs, hold the steering wheel, control the direction and speed, pass slowly, and do not step on the accelerator, otherwise it will cause damage to the vehicle on the other hand. On the one hand, it is easy to get the wheel into a pit. In addition, pay attention to the force of the tire rebounding on the steering wheel to prevent spraining your hands.
Through the hump and double peaks: Before going uphill, keep the wheels aligned with the slope, keep going uphill at a slow speed, and drive forward naturally to give full play to the high torque of the vehicle at low speeds; when approaching the hump, the speed should also be kept stable. Give a little oil to allow the vehicle to pass through the top of the slope slowly. Do not go uphill at a medium speed at this time, because it may cause speeding, and do not accelerate or decelerate suddenly; slow down before going downhill. After identifying the situation ahead, decide at which speed to pass. If the bottom of the valley is sandy, mud, etc. You can't stop because of road conditions.
After training, we drove to our destination. At the foot of the mountain, I hung the four-door version of the Robin Hood Wrangler I drove into the low-speed four-wheel drive 4L mode, and proceeded slowly along the winding mountain road. Because there are a lot of gravel on the road, and there are large and small, the road conditions pass. The tires are fed back to the steering wheel. It’s not easy to hold both hands and adjust the constantly shaking steering wheel according to the road conditions. What’s more difficult is that sometimes you have to stick your head out of the car window to observe the wheel position and the route of travel. For people driving on asphalt, it is indeed a big challenge.
After climbing up the mountain cautiously, we entered the woodland again. In the dense woods, there is only one dirt road that is rolled out. Although driving along the rut is a good choice, if the rut is rolled deep, the vehicle with a relatively small ground clearance will be lifted to the chassis by the bulge in the middle of the road. For example, the passability of the commander and Grand Cherokee in this event is worse than that of the Wrangler.
On the other hand, since the Wrangler uses a non-load-bearing body design, the Grand Cherokee and the Commander use a load-bearing body design, so the Wrangler has more obvious advantages when passing similar cross-axle roads.
After more than 4 hours of trekking, we surpassed two mountains with almost no roads, experienced various road conditions, and finally successfully completed this off-road test drive experience. The whole process was thrilling and exciting. At the same time, we I have gained a lot of off-road knowledge and skills, and I have personally experienced the Jeep products, especially the Wrangler's powerful off-road ability. If you own Jeep products, I think the four words “more fun off-road” are exactly what you are after!