TU-TESL

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Note: cars of the consumer class and below don't have an excellent choice of the handling, because this class of the cars all use front drive power system. The front driving structure is characterized by strong front wheel grip and weak rear wheel grip, because the relatively bulky core assemblies are all in the front position, such as and. The over concentration of the weight brings about the problem of "heavy head and light foot". When the vehicle passes the corner at high speed, there will be a lateral force. Once the force overcomes the grip of the rear wheel, it will cause the tail flick out of control. Refer to the following figure for the deliberate tail flick operation. The front drive car doesn't have a very ideal sense of control because its handling limit is too low. However, one of the consumer cars is quite special. This car is Qin prodm. Special features 1: the car adopts DM dual engine front drive plug-in hybrid system, which has strong performance and can overcome the shortcomings of front drive to a certain extent. Because the electric drive system needs a set of power battery pack with a weight of hundreds of kilograms, which can be used as "counterweight" or "ballast" to balance the front and rear vehicle weight; its structural feature is inverted T-shaped structure, the original intention of this layout is to let the front and rear wheels get a considerable vertical pressure (grip), so Qin prodm is a front drive vehicle with the characteristics of rear drive cars. Special features 2: Qin prodm's body size is 4765 * 1837 * 1495, wheelbase is 2718mm, the size grade is already a medium-sized vehicle according to the joint venture or vehicle standard, but it should be a "short axle" or "standard axle" vehicle after subdivision. In the car, this standard is suitable for the experience of handling, such as 3-Series and Xel. Of course, Qin prodm can only compare with these cars after becoming a rear drive. The suspension of the car is a front McPherson rear multi link four-wheel single suspension. Qin pro, adjusted by the former Mercedes Benz team, has a good sense of operation. The "control" of the control limit and the performance level Qin prodm have a quite good sense of control in the front three compartment car, but the debugging of the ESP system seems too conservative. A little faster speed during cornering will cause ESP intervention and activate the "brake priority" system; therefore, the runaway limit of the car is high enough without turning off ESP, but it will be difficult to deliberately experience runaway operation or high-speed corner cutting. If you want to get off the field, you need to remove the ESP system. Although there is no trouble, without the influence of ESP, the plain car Qin prodm can run rally. The DM dual engine front drive system includes a front-end 1.5T direct injection supercharger, a 25kW BSG integrated generator and starter, and a P3 permanent magnet synchronous motor. The comprehensive power of the system reaches 228kw (equivalent to 310 horsepower), the maximum torque is 495n · m, and the sufficient power reserve can achieve a breakthrough of 5.9 seconds. At present, the acceleration ability of the car is the strongest among the production cars under 300000, and the low fuel consumption of 6 ~ 7L / 100km can be achieved by switching three operation modes. Qin prodm's gearbox adopts six speed wet double clutch, which is a special version of the DM platform. Its function is to ignite at high speed when EV / HEV mode is switched, and to control the engine speed during low-speed creep shifting, so as to control the speed drop before and after shifting to ensure the smoothness of shifting. The comprehensive experience of this car is quite good. At least it can be evaluated in the front-end car. For performance and fuel saving below 150000, Qin prodm can be the first choice at this stage.