Maximum grade, is the maximum slope with the first gear when the car loaded against the road surface in the well, which characterizes climbing ability of the car, the evaluation index is one of the vehicle’s mobility. The expression of this measurement method is the ability of the vehicle uphill slope percentage, ratio of the height and horizontal slope with distance represented i.e., percent slope percentage = tgθ × 100, where θ is the angle of the slope to the horizontal plane.
1. Maximum grade noun interpretation
Maximum grade, refers car loaded with the maximum slope when a first stop against the road surface in the well, which characterizes the climbing ability of the car, It is a key factor to evaluate the vehicle’s mobility. The expression of this measurement method is the ability of the vehicle uphill slope percentage, ratio of the height and horizontal slope with distance represented i.e., percent slope percentage = tgθ × 100, where θ is the angle of the slope to the horizontal plane.
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Equation 2 calculates the climbing
30 example, a maximum percentage of climbing, prepared according to the above formula: tanθ × 100 = percentage of 30 percent = 0.3, check the trigonometric function table obtained θ≈16 ° 42quot; can know this vehicle can climb the most steep gradient is 16 ° 42quot;.
3. Effect of Maximum grade two factors
● torque, as not ensure that the flame in climbing, with engine power and load related overloaded.
● friction, uphill on the way to ensure that does not slip. New tires better tires, off-road tire tread optimal wheel, the wheel, followed by a cross pattern, a vertical pattern worst round, flat dry rough roads than the wet road surface. After driving in this area is far superior to the front drive, four-wheel drive is much better than two-wheel drive.