WITH MEANS FOR DETECTING WHEEL SLIP DURING VEHICLEACCELERATION AND CONTROLLING IT BY REDUCING APPLICATION OFPOWER TO WHEEL:
(under the class definition) Apparatus wherein the vehicle is provided with means for determining if a driven wheel is rotating more rapidly than is proportional to the speed of the vehicle (i.e., the wheel is spinning relative to the surface with which it is in engagement) during a period when the speed of the vehicle is being increased, and for taking action to reduce or eliminate the unproportionality of the rotational velocity of the wheel to the speed of the vehicle by decreasing the amount or the effect of the power being applied to drive the wheel.
(1) Note. The means of this subclass is sometimes used also for detecting wheel slip during braking (i.e., the wheel is rotating more slowly than is proportional to the speed of the vehicle and therefore is sliding relative to the surface it engages), and may include a capability for reducing or eliminating the unproportionality by decreasing the braking effort being applied to the wheel.
(2) Note. In detecting wheel slip of the spinning kind (i.e., as is associated with acceleration), it is common practice to use the rotational velocity of a nondriven wheel as the reference against which the velocity of the driven wheel is compared.
SEE OR SEARCH CLASS
477, Interrelated Power Delivery Controls, Including Engine Control,
35, for interrelated differential and engine control.