Safety Saturday – Nissan’s Vehicle Dynamic Control (VDC) explained

 

Every Nissan car at Nissan of LaGrange has Nissan’s Vehicle Dynamic Control (VDC). VDC takes traction control a step beyond the Traction Control System. It helps the driver keep the vehicle on its steered path in certain handling situations.

VDC works in conjunction with ABS, Traction Control System, and 2-Wheel or 4-Wheel Active Brake Limited Slip (if applicable). Based on input from various sensors, VDC controls the amount of engine power and/or applies brake pressure to individual wheels as needed.

How VDC Works

Seven sensors determine the vehicle’s operating characteristics at any given instant.

  • Four wheel speed sensors monitor the speed of each wheel individually, and compare wheel speed to actual vehicle speed.
  • The brake pressure sensor monitors the amount of brake pressure being applied to the wheels.
  • The steering angle sensor monitors the angle of the steering wheel to help determine the driver’s intended direction.
  • The yaw rate/lateral g-sensor is located in the center of the vehicle and monitors the vehicle’s position in relation to the road. Yaw refers to how much the vehicle rotates around its vertical center axis. Lateral g’s refer to forces exerted on the vehicle from the side. The sensors help determine if the vehicle is moving in a direction different from its steered path — for example, if it’s sliding through a curve.

Together, all seven sensors provide the VDC control unit with information about the vehicle’s behavior at any instant. Based on this information, the VDC control unit sends a signal to actuate the ABS, traction control, and throttle or individual brakes as necessary to help maintain the vehicle on its steered path.

Compensating for Oversteer and Understeer

If a vehicle oversteers when driving through a curve, the back of the vehicle will tend to slide outward. With VDC on, the system senses the beginning of the slide and reacts by braking the outside wheels and reducing engine power to generate force in the opposite direction of the spin. This helps hold the vehicle to the steered line of travel.

If a vehicle understeers on a similar curve, the front wheels lose traction and push out beyond the intended line of travel. In this situation, VDC applies brake force to the inside wheels and reduces engine power. The front wheels regain their grip, and the driver can maintain the steered line of travel.

In both cases, full power becomes available again as soon as VDC has helped stabilize the vehicle.

Benefits

VDC offers several benefits:

  • It helps compensate for oversteer and understeer by controlling brake pressure in one or more wheels and by controlling engine power output.
  • It enhances performance in emergency avoidance maneuvers and helps provide improved control on slippery road surfaces.
  • It works automatically and seamlessly — in fractions of a second..

Nissan of LaGrange, Georgia offers new Nissan cars, trucks, SUVs and crossovers to LaGrange, Newnan, Columbus, Auburn, the Valley, and Atlanta. We also offer Genuine Nissan Service and Maintenance in our Auto Repair Shop. Nissan of LaGrange should be your first stop for a new or used vehicle, oil changes using Genuine Nissan Oil Filters and factory recommended oil, brake service, car battery sales, tires, and auto glass replacement. Nissan of LaGrange where “You Come First!” Always open at http://www.nissanoflagrange.com.

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