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At the just-concluded Beijing International Auto Show, heavy-duty trucks with a capacity of more than 300PS are everywhere, and even more, they reach 460PS. This seems to indicate that the highest power of our heavy truck products will continue to increase. Compared with exhibits, what is the current mainstream engine power segment in the market? This time, Lemon Tea House invited three heavy truck dealers to ask them to talk about the current development of heavy truck engines.
Lemon Tea Guest
Zhu Shengjun: Business Manager, Tongxin Fu Transportation Co., Ltd., Bayannaoer, Inner Mongolia
Jiang Haiping: General Manager of Longchi Group Lianyungang Automobile Sales & Service Co., Ltd.
Li Zheng: General Manager of Henan New Century Auto Sales Service Co., Ltd.
Moderator: One of our most concerned questions is: What are the power segments of the engines that are currently used in different models?
Zhu Shengjun: Users generally look at the engine power to buy a car, but they do not understand the concept of torque and displacement. They need to be introduced by sales personnel. For tractors, we recommend vehicles with high power and low torque. This vehicle has a high speed and low fuel consumption. Dump Trucks We recommend products with appropriate engine power and high torque. We also recommend selecting rear axles and transmissions with more gears with relatively slower speeds.
In the past, users generally chose the 260PS~270PS engine. With the increase of the load, the engine power was also rising. Specifically, in terms of tractors, our users here like to use high-powered engines, generally choose 380PS. Many tractors transport coal from Inner Mongolia to the south. High-power engines have relatively low fuel consumption and travel at high speeds. Since the dump truck is limited by the cargo box, the weight of the pulled cargo is lighter than that of the tractor. The power of 290PS~320PS is sufficient. Dump truck users choose high-power engines to save fuel. Today's users are more inclined to "big horse-drawn cars," so that the engine wear is small, less failure, do not need regular maintenance, high attendance. Many users prefer to pay more for high-power engines. Although they spend more money, they still save money in terms of overall operations. In addition, the choice of engine is also related to road conditions. For example, the car sold in Shanxi, where the poor road conditions, slope, you need to use large horsepower, mainly in the 380PS ~ 420PS, which choose the most 380PS users.
Jiang Haiping: The heavy truck we sell here is almost this power section. For tractors, the practical power section of the engine in Lianyungang area is 290PS~390PS, and the dump truck is 280PS~310PS. Although somewhat different from the situation in Inner Mongolia, 380PS and 390PS belong to the same power segment and are all 11-liter engines. From the brand point of view, Weichai engines are mainly based on 375PS, 380PS, and 420PS, while Xican is mainly based on 375PS and 390PS, and they are all 11-liter engines.
As we all know, different users and different sources of supply require different power engines. Dump trucks equipped with 390PS engines are mostly used for activities that require rollover cargo, such as sand and stone, and coal, and mainly run short-distance transportation of about 200 kilometers. However, some of these vehicles are overloaded. If it is a standard load, heavy trucks with 330PS~350PS may account for 80% of the tractors.
Moderator: The maximum power of the engine mounted on the joint heavy truck displayed at the Beijing International Auto Show reached 460PS. From the perspective of industry development, high-power engines are indeed a trend, but how much promotion space is there for such large power?
Zhu Shengjun: In the heavy-duty truck market in Inner Mongolia, the maximum power of the engine I know is 420PS. This kind of vehicle is mostly used to pull coal from Mongolia and use special trailers. Mongolia’s load capacity requirements for vehicles are not strict and can reach more than 120 tons. . I think that the choice of engine power depends on factors such as road conditions and transportation needs. At present, there is no need to use the 460PS engine in Inner Mongolia.
Jiang Haiping: As far as the current domestic usage is concerned, there is no need for such a high-powered engine in the market. Most of the 460PS engines are used in special or specialized areas, such as large-scale transportation.
Moderator: With the increase of engine power, it also puts forward different requirements for the axles and transmissions it matches. Please introduce the situation in this regard.
Zhu Shengjun: Transmission matching is related to the power of the engine, and the transmission ratio of the transmission matched by different power is different. In general, vehicles that match high-power engines have higher payloads and matched transmissions require larger transmission ratios, and vice versa. The same is true for the axles, and the larger rear axle reduction ratio is required in the case of heavy loads. In fact, speed ratios refer to the combined effects of transmissions and axles.
Jiang Haiping: At present, the reduction ratio of the axle is decreasing. In the past, the reduction ratio of the axle was mainly 4.8. Now it is generally 3.8 to 4.11, and the minimum can reach 3.1. The high speed ratio of the axle consumes high fuel consumption and low output power. The reason why it was used much earlier is because the previous large speed ratio axle adapts to the overload demand. Under the current standard load conditions, there is no need to use a large speed ratio vehicle. bridge. Assembling axles with a speed ratio of 3.8~4.11, the speed is fast and fuel-efficient.
The gear ratio of the transmission is also changing. Compared with before, there are more and more gearboxes equipped with overdrive gears, and the transmission gear shifts from the past 9th gear to the 12th gear gradually. This is still related to overloading. Under overload conditions, the vehicle travels at a slow speed, the relative economic speed is relatively low, and the 9-speed transmission is sufficient. In the case of standard loading, the economic speed is increased to 95 to 110 km, which requires more gears. To achieve faster speeds.
Li Zheng: In actual sales, dealers should recommend configurations to users based on the user's road conditions, pulled goods, climate, and other factors. For example, some logistics vehicles are not overweight and do not require much power. The required efficiency and speed require high speed, fuel economy and speed. This requires an overdrive transmission and a low speed rear axle. However, some users of Jiaozuo and Anyang went to Shanxi and Inner Mongolia to pull coal to turn over Taihang Mountain. When users purchase cars, we cannot listen to the users' choices. Although they are old drivers, they do not understand these configurations. When I went to Inner Mongolia, I gave the user a bridge with a high speed ratio, a low gear, and a high-torque transmission. Although the speed was reduced, the power and torque were improved. They were suitable for mountain roads and overloaded vehicles. They ran slower but pulled far more. This is summed up from the sales, the original we do not understand these, some customers have questions, 380PS car how no one home 340PS car strong? How can a car without a small horse run faster? We summarized this and found that it was not an engine problem but a problem with the overall configuration of transmissions and axles.
Moderator: The vehicle is an organic whole. The increase in engine power alone certainly cannot give full play to the best results. Only reasonable vehicle matching can achieve the best results. In fact, no matter how the engine's power section or other parts match the engine, it can only be recognized if it meets the market demand and satisfies the user's conditions of use.
As the heart of the vehicle and an important profit point, the engine is an area that every heavy truck company wants to involve. Combined with the current strong sales of heavy truck market, many dealers said that this is mainly because the engine is not on supply. “Now many manufacturers are engaged in joint ventures and cooperation with foreign companies. Their common goal is to create their own engines. However, it is still unknown whether the new engines will be able to pass the test of the market and win the trust of users. For example, a joint venture brand engine Many domestic companies have matching facilities, but the market is very general." 