What allows the car to hold and crawl forward on steep slopes, why do drivers change their cars to increase the transmission power to the ground while gripping the wheels, what is the scanning ratio and what does it mean for an SUV?
The goal of the enthusiasts was to create a car with maximum permeability. The most popular term that Jeep manufacturers use today, out of place and out of place, is the notorious “Scan Ratio”.
Any car ad says that the new jeep has a 73: 1 percentage of terrain, which is the best SUV since the days of the army Willys MB.
But in fact, the bypass coefficient has a minimum value when overcoming obstacles or driving through mountain passes. What is more important for off-road qualities of a car is how much the tire tread presses against the ground surface.
For example, off-road “talents” of the Jeep Wrangler Rubicon are primarily allocated to the low-gear ratio in the transfer case.
Only for these jeeps, it is increased to 4.0, while for serial models this indicator is kept at the level of 2.7.
Such a transmission plus a powerful Dan 44 axle generally excludes the issue of Rubicon’s patency. The motor will crank the wheels even in cooling concrete.
Of course, high bypass rates will help increase the strength of the car, but there is also tire size and engine torque. All this allows the jeeps to climb the rocks and quietly move the swamp. So, what begins any SUV.
Engine power passes through the gearbox, transfer case and differential. That is why the differential is often called the “final drive”.
Power supply from the motor has a constant parameter. The driver cannot get more energy from the engine simply by rearranging the transmission but can provide more torque.
Roughly speaking, the reason for which the car accelerates is the “pushing” force of the ground, resulting from the force with which the tire presses on the ground. The force of resistance to the soil is always equal to the force of impact on it.
Based on this motorists emit several main indicators of the car, on which the permeability, durability and reliability depend, such as ground clearance, similarity to collapse and the tire profile itself.