How to distinguish sedan four-wheel obd2 tool technology

With the addition of cars the listing of Zexi, equipment four-wheel obd2 tool drive system a choice. Technological development we are not allowed to say that, who knows the day sedan four-wheel drive and turbo, like sweeping the globe? After all, the winning vehicles from the 1982 World Rally Championship are full-time four-wheel drive car. So we come to discuss the technology to discuss the four-wheel drive cars.First, the center differentialIf your brother does not know the "differential" This stuff that need to go to make up classes, this article does not go into this. The role of the central differential with the differential is the same reason, the differential is in order to allow both sides of the wheels to rotate at different speeds, and the central differential is in order to allow two anteroposterior axis to operate at different speeds.The four-wheel-drive sedan is necessarily a center differential (off-road vehicles may not necessarily). The center differential is the hub of the four-wheel drive system, the role of the engine power distribution to the front and rear axles, similar to the "waist" waist good kidney good legs and feet, not to say okay, is the same reason. Waist Yi Yao water bucket waist, waistline, and so on and so  Auto Diagnostic Tool forth. Center differential are many ministries the same features, and even the center differential that his title has become less and less used. For as long as it is assigned to the core components of the front and rear axle torque, we still can not understand it as a center differential differential.1, full-time or timely. For full-time or timely, of course we can not listen to the name to determine, but this is well understood. Full-time is characterized by at any moment are allocated on four wheels, and timely are generally in some cases (usually occurs wheelspin) connected to four-wheel drive system.2, the transfer of power of the front and rear axle ratio range is large enough. Typical example Zexi front-wheel drive, the rear axle most torque distribution of 50%, the Acura rear axle can get up to 70 percent of the torque distribution, allocation of torque front and rear axle of the Audi Quattro system can be 15% - varied between 85% and Tiguan 4motion system torque distribution between 0-50%.3, the response speed. Since the structure and principle of the same, the response speed of each of the central differential is not the same. Called the response rate is very professional and that, in fact, the young man he thought of as a loss of balance, fast response can not fall immediately adjust the center of gravity, slow reaction will be to shoot directly. The car's four-wheel drive system on the reaction rate is higher than the cross-country. The sedan is the moment things got out of control at high speeds, the response speed is fast enough, you can get out of control impending four control,  lexia 3 v47  rather than waiting out of control (slip) and then attempt to control.
Audi Quattro is the famous center differential Torsen differential. Since using the principles of the purely mechanical force distribution, like differential is an innate physical properties, and therefore no reaction time can be automatically assigned the torque to the front and rear wheels. Audi is also often in the hall on the hanging cited thought proud of gecko logo reasons.