SINOTRUK's HOWO A7 is positioned in the high-end domestic heavy truck market and the international market. It keeps up with the development trend of international heavy truck technology in terms of technology. It insists on the combination of independent innovation and joint development in the research and development stage. The excellent power and good fuel economy of A7 series products.
0.57 small wind resistance. In the modeling design, SINOTRUK R&D personnel made full use of the principle of computational fluid dynamics to analyze and optimize, so that the wind resistance of the A7 is as low as 0.57. Competition in the commercial vehicle market requires manufacturers to continuously reduce fuel consumption, and it is an important way to improve their transportation capacity and reduce their aerodynamic drag coefficient. China National Heavy Duty Truck Technology Center has carried out a series of studies on the aerodynamic optimization of the cab shape, and the drag coefficient has been greatly reduced by properly installing the air deflector, deflector and other measures.
Low speed high torque engine. For the A7 platform, Sinotruk has tailored two high-quality heavy-duty diesel engines of the D12 series and the D10 series. In view of the current situation of domestic oil products, Sinotruk adopts a new generation of electronically controlled common rail fuel system from DENSO company: by applying quartz coating to the surface of the oil nozzle, its hardness and wear resistance are strengthened, thereby improving the ability to withstand harsh fuel. Extended service life.
Small ratio drive axle. The A7 standard tractor is equipped with the HW16 series single-stage reduction axle independently developed by Sinotruk, and the heavy-duty tractor is equipped with the HC16 series double-stage reduction axle independently developed by Sinotruk. HC16 is a high-reliability cast axle housing wheel-side reduction double drive axle with independent intellectual property rights of Sinotruk, with a standard speed ratio of 4.42 and an optional 4.8. Due to the development of heavy-duty tractors and the extension of highways, various manufacturers have introduced rear axles with small speed ratios to meet the needs of high-speed driving of heavy trucks. Whether it is a single bridge or a double bridge, the performance indicators of Sinotruk's products are at the leading domestic level.
Reduce your own weight. The application of finite element method for topology optimization design of mechanical load-bearing structure is an effective optimization method, which can provide an important conceptual design reference for the lightweight design of mechanical structure and parts. And the optimization analysis of the dead weight of each component, the dead weight of the whole vehicle is effectively reduced by about 100kg.
Using topology simulation optimization technology, two new front axles, HF7 and HF9, are newly developed for standard and heavy-duty tractors respectively. The inclination angle of the front axle kingpin of this series has been adjusted from 3 degrees to 6 degrees, and all are equipped with disc brakes as standard. The load is increased, but the dead weight is reduced by about 20kg.
