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Cadence braking or stutter braking is a driving technique that involves pumping the brake pedal and is used to allow a car to both steer and brake on a slippery surface. It is used to effect an emergency stop where traction is limited to reduce the effect of skidding from road wheels locking up under braking. This can be a particular problem ...
Pumping the brakes" is strongly discouraged during an unintended acceleration event, as this can lead to a loss of braking power. [74] It is also strongly recommended not to shut off the engine, which disables all control including the steering wheel.
Opposite lock, also commonly known as countersteer, [1] is a colloquial term used to mean the steering associated with the deliberate use of oversteer to turn a vehicle rapidly without losing momentum. It is typified by the classic rallying style of rear-wheel drive cars, where a car travels around a bend with a large drift angle. The terms ...
The desired vehicle state is determined based upon the steering wheel angle, its gradient, and the wheel speed. Simultaneously, the yaw sensor measures the vehicle's actual yaw rate. The controller computes the needed brake or acceleration force for each wheel and directs the valves of the hydraulic modulator.
The advantage of a small scrub radius is that the steering becomes less sensitive to braking inputs. More scrub radius adds to road feel by pushing the inside wheel into the ground. An advantage of a negative scrub radius is that the geometry naturally compensates for split μ (mu) braking, or failure in one of the brake circuits. It also ...
At lower speeds, the DSR system will increase the steering ratio by having the electric motor provide more assistance to the hydraulic steering system. [2] Thus, less torque is needed to be applied to the steering wheel when making sharp turns. This makes the action of steering feel lighter and more controlled. [5]
The spinning wheel is slowed with short applications of brakes, diverting more torque to the non-spinning wheel; this is the system adopted by Range Rover in 1993, for example. ABS brake-traction control has several advantages over limited-slip and locking differentials, such as steering control of a vehicle is easier, so the system can be ...
When describing the feature, BMW stated, "When braking during curves or when braking during a lane change, driving stability and steering response are improved further." [ 8 ] While BMW was the first automobile manufacturer to create this technology, federal mandates from the EU in 2009 [ 9 ] and the US in 2011 [ 10 ] required the inclusion of ...