·Dongfeng Motor Group Co., Ltd. passenger car company recalled some Dongfeng Fengshen new AX7

Recently, Dongfeng Motor Group Co., Ltd. Passenger Vehicle Company (hereinafter referred to as “Dongfeng Passenger Vehicle Company”) supervised the national market in accordance with the “Regulations on the Management of Defective Automobile Product Recall” and the “Implementation Measures for the Management of Defective Automobile Product Recall Management”. The General Administration of Management has filed a recall plan. From May 18, 2018, it will recall some Dongfeng Fengshen new AX7 cars produced between October 18, 2017 and March 9, 2018, for a total of 13,128 vehicles.
Due to the manufacturer's manufacturing reasons, some of the vehicles in the scope of the recall have defects in the press-fit process of the rear shell seal of the brake vacuum booster assembly. There may be cases where the brake hydraulic shock causes deformation and disengagement of the seal ring skeleton. In extreme cases, the vehicle may have a brake drag and an acceleration weakness, which may present a safety hazard.
Dongfeng Passenger Vehicle Co., Ltd. will freely inspect vehicles within the recall range and replace defective vacuum boosters with improved vacuum booster assemblies to eliminate safety hazards.
Authorized dealers of Dongfeng Passenger Vehicle Company will notify the relevant owners through registered mail, telephone, SMS, WeChat, email, etc., and arrange free inspection and maintenance. Users can call the customer service hotline 800-880-6600 or 400-880-6600 for details.
Users can also visit the Defence Product Management Center of the State Administration of Markets () and the WeChat Public Account (AQSIQDPAC) for more information. In addition, you can also call the National Product Supervision and Administration Administration's Defective Product Management Center hotline to reflect problems during the implementation of the recall or to submit defects.

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Tractor, Head Tow Truck, Front drive capability called the front tractor, rear no traction drive capability of the car called the trailer, tractor trailer is pulled along. Tractor and trailer is connected in two ways: The first is the front half of the trailer after the tractor ride in the section above the saddle traction, tractor trailer behind the bridge to withstand the weight of the part, which is the tractor; second species is the front end of the trailer attached to the rear end of the tractor, the tractor only pull forward, dragging the trailer to go, but do not bear the weight of the trailer down, which is all linked.

Tractor, Head Tow Truck principle

Tractor, Head Tow Truck Traction Control System Traction Control System, referred to as TCS, also known as ASR or TRC. Its role is to make the car under various traveling conditions can get the best traction. Traction control system control device is a computer, the computer detects the use of four wheel speed and steering angle of the steering wheel when the car is accelerating, if it detects that the drive wheel and non-driving wheel speed difference is too large, the computer immediately determine the driving force is too large issuing a command signal to reduce the amount of oil the engine, reducing the driving force, thereby reducing the driving wheel slip rate. Computer control through the steering wheel steering angle sensor driver intent, then use the left and right wheel speed sensor detects the left and right wheel speed difference; in order to determine whether the degree of steering the car and the driver's steering intention of the same. If the car detects understeer (or oversteer), the computer immediately determine the driving force of the drive wheel is too large, it issued a directive to reduce the driving force, in order to achieve the driver's steering intention.

Tractor, Head Tow Truck Traction control system to prevent the vehicle driving on snow and other slippery surfaces the driving wheel idling, the vehicle can smoothly start and accelerate. Especially in snow or muddy road, traction control system can ensure the smooth acceleration, to prevent the vehicle wheel slip occurs due to sliding or drift.

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