In the first four months of this year, China's NG medium and heavy truck sales exceeded 71,000 units, gas medium and heavy trucks in the terminal market penetration rate of close to 48%, which means that every 2 trucks sold out of 1 is a gas car, especially "high-horsepower" gas trucks are the market's "favorite! The gas truck is the "favorite" in the market.

　　 Strong power performance, comfortable driving experience, stable return ...... these are the core concerns of the transportation people. Users in the selection of NG car, in addition to focusing on the engine, transmission, there is often a more entangled issue is - the speed ratio of the rear axle. Today, we will take the three NG hot-selling vehicles, J7, J6V and J6P, as an example, to share some know-how and help the transportation people to select the gas vehicle with ideal speed ratio.

　　Accurately match the speed ratio with the operating conditions

　　 Selecting the speed ratio of a gas vehicle requires comprehensive consideration of the vehicle's usage, road conditions, load capacity, power demand, operation mode and cost-effectiveness in order to achieve the best balance of performance and efficiency.

　　 First of all, we should consider the main operating conditions of the vehicle, if you run a lot of highway, the speed ratio is small; if you run a lot of bottom road, the speed ratio is large. Secondly, combined with the engine horsepower, high-horsepower engine + small speed ratio rear axle, suitable for long-distance high-speed logistics; low horsepower is more suitable for large speed ratio to balance the power output. Also take into account the demand for transportation efficiency, frequent start-stop urban distribution needs to be higher speed ratio, while long-distance high-speed is more economical to choose a small speed ratio.

　　There is more than one choice of ratios for J7 600 HP gas trucks.

　　 Specifically subdivided into different models to see, if the liberation J7 models. The car is matched with CA6SX1 engine, maximum torque of 2800 Nm, ZF 12-speed transmission, and hydraulic retarder, whether in the plains or plateaus, starting, overtaking are very easy. Speed ratio, if users often run on the highway, the speed ratio is recommended to choose 2.688, absolutely "save gas". If you face complex road conditions, traveling mountains and bottom road mostly, speed ratio is recommended to choose 2.867, to increase torque, more suitable for climbing, gas consumption is also stable. Those who think that J7 600 hp gas tractor is only equipped with a single speed ratio, in fact, you worry too much. J7, known as the "truck ceiling", has its own intelligent factory and exclusive production line, the best quality, to live up to the trust of truckers.

　　J6V Gas Heavy Duty Truck Automatically Matches the Optimum Speed Ratio

　　 If your car is a Jiefang J6V gas truck, it can still be matched with CA6SX1 engine with maximum 600 hp, and the transmission can be selected from the smooth version of AMT transmission with hydrodynamic retarder. The engine has a wide torque range, high low-speed torque and excellent gas saving performance, which is suitable for the typical trunk line scenarios across the country. The choice of speed ratio also follows the user's road conditions: if traveling highway mostly, it is recommended to choose 3.545; if taking the bottom road or complex road conditions mostly, it is recommended to choose 3.727, which can ensure the operation time of everyone, but also can climb the slope when the power does not decline. And the chassis bridge joint calibration model, according to the user's working conditions and the vehicle DOWNSPEED technology, to recommend the best speed ratio, to enhance the gas-saving ability of the vehicle.

　　J6P Gas Heavy Duty Truck "Golden Speed Ratio" with Closed Eyes

　　 J6P 486 hp gas tractor, which is definitely the king of "cost-effective" gas trucks, is mostly used in general cargo and coal transportation scenarios. Due to such transportation on the timeliness of the requirements are often not high, most of the time to choose to go to the national highway or provincial highway, in this case, there is no need to choose more than 500 horsepower high-power gas trucks, otherwise it will lead to waste. Liberation J6P gas truck equipped with CA6SM6 engine, FAW manual 12-speed transmission, liquid retardation can be selected according to your needs to add. Speed ratio, it is recommended to choose the "golden speed ratio" 3.727, whether it is high speed or bottom road, full control.

　　 In short, different transportation scenarios, there are not the same wise choice. In the "more goods, low freight prices, pay attention to the time" freight market, high-horsepower gas trucks, the competitive advantage of the increasingly prominent, the card should be based on their own specific transport conditions to select different power, different speed ratio of the gas truck models, in order to maximize the profit of the transport. I believe that these key issues selected, all types of models can be in different areas of "show off their skills".