博越四驱产品外部标识"AWD" 功能解释

Explanation on the Function of External

Identifier "AWD" on Emgrand X7 Sport

1、AWD名称解释

1. Explanation on the term AWD

全轮驱动英文为All-wheelDrive简写为AWD。四轮驱动英文为FourWheelDrive,简写为4WD

The English term for 「all wheel drive mode 」 is written as All Wheel Drive, abbreviated as AWD. The English term for 「four wheel drive mode 」 is written as Four Wheel Drive, abbreviated as 4WD.

AWD包括如下3种四驱系统,分时四驱(Part-time AWD)、全时四驱(Full-time AWD)和适时四驱(ON-demand AWD)

AWD system includes the following 3 four-wheel-drive modes: Part-time AWD , Full-time AWD and On-demand AWD.

1)分时四驱(Part-time AWD)。从字面上可以这样理解:在所有路面均可以使用四轮驱动。在干燥的公路上行驶时,汽车可以使用两轮驱动,如车轮打滑,可以手动或自动接合4轮驱动,可在恶劣地形情况下使用分动箱(加力箱)的低速档,提供更大的四轮驱动力。特点是结构简单、成本低、越野性较强,四驱/两驱需要手动切换,多用于对越野性要求较高的车型

1) Part-time AWD Literally, Part-time AWD can be understood in this way: The four wheel drive mode can be used on all roads. Running on the dry road, the vehicle can be driven by two wheels; if wheel slips, 4 wheel drive mode can be manually or automatically applied. In case of harsh terrain conditions, low speed gears in transfer case (force-increasing) can be engaged to provide stronger force by means of four wheel drive. The characteristics of Part-time AWD is that it is simple in structure, low in cost, and strong in off-road performance. It is needed to switch between four-wheel drive and two wheel drive manually. Part-time AWD is more used on the models which has high requirements for off-road performance.

2)全时四驱(Full-time AWD)。是最完善的驱动系统,无论路况如何,汽车始终使用四轮驱动方式,没有两驱方式。这些系统一般具有高低档分动箱(加力箱),可应付最恶劣的路面。动力传递给全部四个车轮,在公路上或越野行驶时均可获得最高的牵引力。它是使用最方便的系统,驾驶员介入最少。当然,这类系统一般不如适时四驱系统省油。并且此系统更为复杂,生产成本也更高,所以车价也就更昂贵,多用于豪华车或高端SUV。

2) Full-time AWD Full-time AWD is the most perfect driving system. No matter what road condition is, the vehicle always runs in four wheel drive mode, and no two drive mode is provided. These systems generally have high/ low gear transfer case (force-increasing) to cope with the worst road surface condition. The power is transmitted to all four wheels, so no matter whether the vehicle is running on the road or off road, the highest traction can be delivered. It is the most convenient system, needing the least driver』s intervention. Of course, this type of system is not so fuel saving as On-demand AWD. This system is more complex, and the production cost is higher, so the price of vehicle equipped with the system is more expensive. The system is more applied on luxury car or high-end SUV.

3)适时四驱(ON-demand AWD)。全轮驱动AWD系统通常用于小客车及"轿车式"轻型SUV。其动力设计只是用来在城市使用。动力可按固定或变化的比率传递给全部四个车轮,无需驾驶员介入。动力系统低档扭力输出不够大,爬坡能力不强,无法在稍复杂的越野环境中使用。适时四驱在轿车、及多用途运动车中是十分时尚的选择,将它称之为全天候系统比全地形系统更为合适。

3) On-demand AWD All wheel drive system is usually used on small passenger cars and light SUV of "sedan type". In terms of power, it is only designed to run in city. The power can be transmitted to all four wheels at a fixed or changing ratio, and no driver intervention is required. The torque output at low gear of the power system is not large enough, so its climbing ability is not strong, and it can not be used in a slightly complex off-road environment. On-demand AWD is very favored choice in designing sedans, multi-purpose vehicles. It will be more suitable to call it 「all-weather system」

than to call it 「all terrain system」.

2、博越AWD说明

2. Explanation on AWD of Emgrand X7 Sports

博越四驱就是采用AWD(全轮驱动)中的适时四驱(ON-demand AWD),该产品的应用情况:克莱斯勒(酷威);长城(H6 H2);广汽GS5;长安CS75等车型。

Emgrand X7 Sports adopts On-demand AWD mode of AWD system. On-demand AWD mode is now applied on the products such as Dodge JCUV, Great Wall』s H6 and H2, GAC』s GS5; Changan』s CS75, etc..

博越四驱适应于城市越野工况,其会根据发动机信号、档位信号、油门开度、当前车速及前后轮速差等信号综合分析,适时判断根据需要输出适当动力给后轮,所以称为适时四驱(ON-demand AWD),同时还具备LOCK模式,当使用该模式时则动力快速传递给后轮,可以用于前轮打滑脱困或其他极限工况使用,不建议长期使用。

Emgrand X7 Sports』On-demand AWD mode is suitable for urban off-road operating conditions. The On-demand AWD mode can make a comprehensive analysis and timely judgment according to signals such as engine signal, gear position signal, throttle opening, current speed and front/rear wheel speed differential signal and then output appropriate power to rear wheels. This is the reason why it is so called On-demand AWD. Meanwhile, On-demand AWD has LOCK mode, that is, when LOCK mode is used the power is fast transferred to rear wheels. LOCK mode can be used when front wheels slip or in other extreme conditions so as to get out of the trap, but it is not recommended to use the LOCK mode for long-term.

优点:1)适时四驱(ON-demand AWD)核心部件为Nextrac电磁控制多片离合器,车辆行驶时用户不需要进行任何操作,四驱系统不断地实时读取轮速、制动、转向、动力总成输出扭矩等信号。当检测到前轮打滑时,多片离合器压紧结合,将动力由前桥传递至后桥,以增强车辆的抓地性能;而在日常高速驾驶时,离合器片自动分离,此时车辆为前轮驱动,以提高燃油经济性,兼顾公路与越野

性能,同时具备一定越野脱困能力。

Advantages: 1) The core component of On-demand AWD mode is Nextrac electromagnetic control multi-plate clutch. When the vehicle is traveling, users do not need any operation performed on it. The drive system continuously reads real-time signals such as the wheel speed signal, braking signal, steering signal, powertrain output torque signal, etc. When the drive system detects out front wheel slip, multi-plate clutch will pressure the clutch plates and engage to transfer the power from front axle to rear axle to enhance vehicle grip performance; and during daily high speed driving, the clutch will automatically disengage when the vehicle is driven by front wheels in order to improve the fuel economy, so both road and off-road performance are acquired and at the same time, a certain off-road capability is also provided.

2)扭矩响应快。NexTrac系统为电磁控制多片离合器系统,没有液力迟滞现象,在前轮打滑时能在0.1秒内迅速把扭矩传递到后轮。

2) Fast torque output response. NexTrac system is electromagnetic control multi-plate clutch system, so there is no hydraulic hysteresis. When the front wheels slip, it can quickly transfer the torque to the rear wheels within 0 .1 seconds.

3)后轮动力强劲。NL-3四驱系统可以最大传给后轮1900Nm的扭矩,假使前轮打滑,只凭后轮驱动也能爬上30%的坡度。

3) Strong rear wheel driving force. Emgrand X7 Sports』 On-demand AWD can transfer to the rear wheels the maximum torque up to 1, 900Nm. Even if the front wheels slip, the vehicle can also climb the slope with 30% gradient only by rear wheel driving.

4)拖曳扭矩不大于25N.m,提高燃油经济性

4) The drag torque is not greater than 25N.m, which improves fuel economy

缺点:适时四驱(ON-demand AWD)是主要用于城市四驱,其扭力不足以应付太恶劣的越野路况,越野性能不如其他类型AWD系统。

Disadvantages: On-demand AWD is mainly used as urban four-wheel

drive system. As the torque of On-demand AWD is not big enough to cope with too harsh off-road conditions, its off-road performance is not so good as other modes of AWD system.

3、博越车轮全部位于地面的工作状态说明

3. Explanation on working state when all the four wheels of Emgrand X7 Sports touch the ground

博越采用适时四驱系统(ON-demand AWD),其根据四轮轮速信号、转向角信号等,判断给后轴输出扭矩大小,再通过控制扭矩管理器内电磁离合器结合程度来输出扭矩给后轮。有如下两种工作模式:

Emgrand X7 Sports adopts On-demand AWD. It will determine the size of an output torque to the rear axle according to the four wheel speed signal, steering angle signal, and then transfer the torque to the rear wheels by controlling engagement degree of electromagnetic clutch inside the torque transfer device. There are two modes of operation for it:

AUTO 模式:挂入D档后,即使前轮有打滑,如果此时油门开度为0,逻辑判断不给扭矩到后桥,只有踏下油门才会有扭矩输出到后桥,才能实现脱困。

AUTO mode: After you shift to gear D, even if the front wheels slip, if the throttle opening is 0, the system judges logically that no torque is transferred to the rear axle. Only after the acceleration pedal is pressed down, will the torque be transferred to the rear axle in order to get out the trap.

LOCK模式:四驱锁定模式,四轮驱动,当用户遇到冰雪等特殊路面,希望直接手动加强控制后轮的扭矩时,可以直接按下四驱系统的Lock按钮,把车辆锁定在四驱模式。后轮扭矩从100Nm(最小扭矩)到750Nm(最大限扭值)分配;直线行驶传递750Nm,在转弯时减小扭矩传递。Lock模式下,车辆会产生转向制动,为提高主动安全,以及避免用户忘记解锁,NL-3四驱系统能够根据转向角信号或车速信号(车速大于40km/h)自动解除Lock模式。此时可能为两驱,但仪表与模式开关同步,显示的还是LOCK模式,实际上功能已变化。LOCK mode: This is the mode that all four wheels are to drive and the mode is locked. When users encounter ice and snow road and other special road conditions, hoping to manually control and strengthen rear wheel torque, they

can directly press down the LOCK button to set the vehicle in locked four-wheel-drive mode. The rear wheel torque will be distributed from 100Nm (minimum torque) to 750Nm (maximum torque limit); 750Nm of torque will be transferred when vehicle is running in straight line, and when vehicle is turning, the torque will be reduced. In LOCK mode, the vehicle will brake when making a turn. In order to improve the active safety and avoid the user forgetting unlocking, Emgrand X7 Sports』four-wheel-drive system will automatically remove LOCK mode according to steering angle signal or speed signal (the speed is higher than 40km/h). At this time, although the vehicle may be driven be two wheels, the display shows it is still in LOCK mode as the instrument panel display and the mode switch are synchronized; however, the function has been changed in fact.

4、博越位于举升机上时工作状态说明

4. Explanation on working state when Emgrand X7 Sports is lifted

当车辆位于举升机上时,此时四轮全部悬空,若为AUTO模式,此时若挂入D档、踩下油门则发动机动力将通过传动轴传递到扭矩管理器前端,此时因为前后轮速差过大会导致ESP报警,随之扭矩管理器将接收到ESP请求信号,从而断开扭矩管理器,最终后轮没有动力输出,所以在此时观察后轮不会旋转。

When the vehicle is lifted, the four wheels are suspended in the air. If the vehicle is in AUTO mode, when you shift to gear D, depress the acceleration pedal, the engine power will be transmitted through propshaft to the front end of torque transfer device. At this time, if the speed difference between the front wheel and rear wheel is too big, ESP alarm will be triggered, and the torque transfer device will receive a ESP』s request signal and disconnect the torque transfer device. As a result, no power is output from rear wheels, so at this time you can see that rear wheels do not rotate.

当车辆位于举升机上时,此时四轮全部悬空,若为LOCK模式,此时若挂入D档、踩下油门则发动机动力直接传递给后轮,可以看到后轮立即旋转。

When the vehicle is lifted, the four wheels are suspended in the air. If the vehicle is in LOCK mode, when you shift to gear D, depress the acceleration

pedal, the engine power will be transmitted directly to the rear wheels, and you can see that the rear wheels rotate the immediately.

5、总结

5. Conclusion

博越四驱产品外部标识"AWD" 没有问题,因为其属于AWD系统中一种,即为适时四驱系统(ON-demand AWD)。这有别于沙特当地消费者认为的全时四驱(Full-time AWD)。

There is no any problem with the external identifier "AWD" on Emgrand X7 Sports four-wheel drive vehicles, because Emgrand X7 Sports』four-wheel drive mode is one of AWD system, i.e. On-demand AWD, which is different from Full-time AWD so called by local consumers in Saudi Arabia.

推荐阅读：
相关文章