Which categories are included in the Active Yaw Control Systems?

Active Yaw Control (AYC) systems are designed to enhance vehicle stability and handling by improving the transfer of torque between the wheels, especially during cornering. These systems can help to prevent oversteer and understeer, providing better grip and control.

The inclusion of both four-wheel AYC systems with and without engine control in the answer reflects the comprehensive functionality of these systems. Four-wheel AYC systems utilize input from various sensors to manage the distribution of torque to each wheel, which can significantly influence the vehicle's dynamics and response to steering. When integrated with engine control, these systems can also modulate power delivery to optimize performance and stability further.

Moreover, two-wheel AYC systems, while functional, do not provide the same level of control as their four-wheel counterparts. However, they are still categorized within AYC systems. Therefore, stating that all categories, including both forms of four-wheel AYC and two-wheel systems, are part of Active Yaw Control systems accurately captures the full spectrum of these technologies. This inclusion helps drivers understand the differences in handling dynamics and the importance of torque distribution in vehicle control across various system configurations.