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All-wheel drive Opel added intelligence

The ski resort of Austria, is much more interesting to ride in cars with non-studded tires on bare ice, and not on a snowboard. No, Opel had not planned to write off a few cars. Just thought of that so you can best demonstrate the operation of a new system of intelligent all-wheel drive, which has appeared only on models of Opel Insignia Country Tourer, Opel Insignia OPC and Opel Mokka.

Ice track near the town of Obertauern - a real Mecca for skiers and snowboarders, with an abundance of turns varying degrees steepness. Plus the sun instantly turns less in the shade. So, it will be very slippery.

Because of the morning mist and shadows of the mountains it seems that the entire route is covered with snow. The ice here is so slippery that after stopping the car park between the traces cars easily slip a few inches down, even with the door open.

"Go, please, slowly, try to stay on track and do without collision" - that's the whole briefing. Instructors Opel showed no driving techniques counteremergency not told about choosing the optimal trajectories. On the contrary, pure ice journalists had to leave without special training and additional training and assess how the system will cope intelligent all-wheel drive with such terms.

First in the queue - Mokka. Car with confidence budge, climbs climbs and turns on the slopes even goes as if under conventional and no non-studded tires, wheels polished ice. Four Opel Mokka with excitement swirling on kinked track descents and climbs almost to the "land" speeds.

But here comes the sun and its rays not only disperse the fog, but the ice is melted. Time - and already the first crossover unfolds in a sharp turn. Still, electronics, whatever clever was, to cope with the laws of physics can not.

When we sit down in the Insignia OPC, all around the sunlit, the upcoming road no ups or downs. And so the warning "It is very slippery!" No one takes seriously. Speed ​​80-100 km / h on the lines do not seem too big. Increasingly tight bends heard crunching wheel sides of the sun skukozhilas edge of the track. On an enclosed track of caution and the laws of nature is easy to forget.

And here, in the hairpin turn, one of the cars off the track in the virgin snow. There were no injuries, and a tractor, contrary to expectations, was not required. Four-wheel drive car easily pulled out of the snow.

Next in line - all-wheel drive wagon. From the side of the track for Opel Insignia Country Tourer looks serious, if the machine on it crawling. "This track is a little different from here on the right side there are columns, behind which is not fenced river" - croaked explanation transceiver.

But in fact it was much more prosaic. Twists and tangles of varying degrees of coolness on this track was, perhaps more than in the previous two combined, and the midday sun brought the ice to the point of sliding, that move on it was difficult even on your feet. Therefore, on any recklessness on the track, even the question. It seemed that all drivers tend to stay at least within the track. And any wrong to touch the accelerator pedal then threatened to drift, the drift.

Instructor Opel cars later compared with skis. Like, there are cross-country, downhill and there, and at local resorts typically ride on the second, because it's just more convenient and safer. But even skiing without proper training on the most challenging tracks Obertauern better not to meddle.

How does intelligence-wheel drive?

Electronically controlled all-wheel drive transmission 4h4 constantly adapts to changing road conditions and doses torque in the range of up to 0 100% of the axes, and distributes it between the rear wheels. The main advantage is that the proper distribution of traction occurs even before any wheel starts to slip due to lack of adhesion, such as wet or snowy roads.

All three models thrust between the axles and wheels on demand distributed electronics and sensors that transmit information to the control unit are both sensors and safety systems - ABS and ESP, which, according to experts Opel, allows the car to be preserved longer "appropriate" in the event of on the road emergency.

This means that in addition to a significant win for the connection time of the second axis (compared with all wheel drive systems, which are based on purely mechanical distribution of power if the wheels spin) and it still has a huge marketing advantage.

When driving in the city or on paved roads, these models Opel, in fact, remain front-drive, providing the appropriate fuel.

Differences between full drive Opel Mokka, Insignia Country Tourer and Insignia OPC associated with different goals and objectives that were set in relation to the concepts of each of the models.

In Mokka, with its more pronounced off-road specifics, the all-wheel drive is connected even on a stationary car - to prevent slippage of the wheels when starting. After the car is pulled off, all the traction goes to the front wheels, and the rear axle is connected only when traffic conditions require it. Like most crossovers, the Mokka four-wheel drive system supports lift-assist (HSA) and downhill (HDC) assistance functions. With the electronic traction control, in addition, the function of interaxle locking is performed due to selective braking of the front or rear wheels.

Transmission Insignia 4x4, despite similar design Mokka wheel drive, configured with the calculation primarily on the dynamic characteristics of the car. Furthermore, in addition to the rear axle set multiplate clutch slip differential (eLSD) with electronic control. This allows to distribute the torque not only to the "cross direction" (between the rear wheels), but in the "longitudinal" - between the axes. ESP system settings were also optimized taking into account the features of a full drive.

Alexey Matveev
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