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What is S-AWC system?

Super All Wheel Control System (Super All Wheel Control), referred to as S-AWC. S-AWC integrated vehicle dynamic control system for controlling the AYC, ACD, ASC and Sport ABS components, but also can be used to increase the braking control system of the AYC. Thus, S-AWC not only enhance the effect of the curve and the power output, and steering stability under various road conditions has been effectively improved.

1. System Composition

the ACD (active center differential lock)

Active central differential lock uses an electronically controlled hydraulic multi-plate differentials. The system is optimized to maximize the ability of different overload traveled road surface, so that the differential control operation in the case of open or locked, to optimize torque distribution front and rear wheels. In this way, the balance of traction and steering feedback can achieve optimal effects.

AYC (Active Yaw Control System)

AYC uses a torque transmitted to the rear differentialDelivery mechanism to control rear wheel torque differential in response to different driving road. Thus, the problem of the vehicle yaw get suppressed effectively, it is possible to effect a corresponding cornering is improved. AYC also used to control the sliding limited slip differential of the rear wheels, thereby increasing the output effect traction. As the system was first used in vehicle technology, which listed in 1996 on April fourth generation EVO models first appeared. And later evolved, with the official and the market in January 2003, the eighth generation EVO models.

and the system then known as Super the AYC, since it is applied on the first bevel gear of the differential planetary gear, so that it can transmit the torque doubled. Compared with the application in a system EVO ninth, tenth advantage of the new generation of AYC EVO to be used in that case is controlled by using a yaw yaw sensor, but also to apply a braking force to the wheel. Because of its ability to precisely control the dynamic effect of the car in the corners, so it can not only effectively control the vehicle cornering performance in the corners, but also capable of precise reaction driver’s driving intention.

ASC (active stability control)

ASC by the system to the power output of the engine and controls the braking force of each wheel, thereby optimizing the output of the vehicle traction, attempt to keep the vehicle stable results. This new system than the previous generation EVO more advanced system, because it gives each wheel equipped with a brake pressure sensor, it is possible to more accurately sense and control the output of the braking force. During acceleration, it is controlled by a wheel on a wet road surface to ensure the vehicle has enough grip. In addition, when the vehicle encounters an emergency situation or a sudden steering wheel being disturbed by external forces when it can inhibit the slide, to stabilize the vehicle.

Sport ABS system (Antilock Braking System sports)

Anti-lock control system can ensure the steering of the driver, and to ensure the braking condition of the vehicle since when does the next emergency braking or braking on slippery surfaces, the occurrence of tire locking. Additional and rely on sensors and yaw brake force sensors, motion type ABS system can also improve the tenth generation EVO new braking effect when cornering.

S-AWC control systemSystem

in the ACD and AYC components engine torque and braking force information of the application to ensure that the S-AWC system when the vehicle acceleration or deceleration, the faster the reaction. Yaw feedback system used on the system is unprecedented. The system can help the vehicle traveling along the driver’s wishes. After transmitting the data in the yaw sensor, the system can be compared with the difference between the dynamic response of the vehicle with the driver’s intention, so as to determine the magnitude of the steering force, the effect of correcting the output power. AYC braking force exerted to achieve torque transmission between the left and right wheels, thereby ensuring the effect of the vehicle in the limit, the AWC is possible to better control the vehicle attitude.

In understeer when the AYC the fresh power control system capable of applying a certain braking force to the inner wheels; in oversteer when increased braking force of the outer wheel, so that the torque obtained optimal output, to ensure efficient vehicle cornering, stability out of the corners. Integration Management System ASC and ABS by controlling S-AWC to ensure with acceleration or deceleration, when the snow-covered road, the car can dynamically control the percentage obtained 100 communicated. The system can implement three control modes: SNOW GRAVEL Mode Mode Mode TARMAC dry road surface, wet or bumpy road and the snowy road. After the driver selects the mode best suited to the road environment, S-AWC will be able to better control the vehicle attitude, and can limit the performance of the vehicle played out.

2. History Technology

S-AWC competition from many years of experience in the Mitsubishi World Rally Championship, after many years of accumulation of technology developed by the electronic power distribution system. S-AWC is AYC, ACD, ASC, ABS four system common form. AYC and ACD which are S-AWC most important technical configuration.

In 1996, AYC technique originally applied above LANCER Evolution IV, instead of a mechanical rear axle differential previous generations employed.

In 1998, AYC technology has been improved in the new release LANCER Evolution V.

In 2001, the ACD center differential active electronic techniques are applied based LANCER Cedia chassis LANCER Evolution VII above, to achieve electronic control of the rear wheel power distribution.

In 2003, ACD systems on LANCER Evolution VIII to give improved. AYC system promoted Super AYC system which changes the transmission mode, the power distribution between the two rear wheels wider range, so that the performance curve of the vehicle is greatly improved.

In 2005, LANCER Evolution VIIII above the electronic system has been improved by adding the Sport ABS. Binding ACD and Super AYC, forming a prototype of contemporary S-AWC.

the latest LANCER Evolution X mounted S-AWC increased active brake control, active steering, swinging suspension control technology, to achieve a dynamic control system is integrated.

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