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Hand in hand, quality is the engine, and excellent quality of Yangwang U7 engine block is created together.

In the automobile manufacturing industry chain, every key component is related to the performance and quality of the whole vehicle. With the concept of in-depth cooperation and synergistic development with customers, and by virtue of exquisite craftsmanship, strict quality control and high-quality service system, Zhenhengheng Power cooperated with BYD to develop 4H20 engine block, which contributed to the birth of this advanced engine and further deepened the cooperative relationship between the two parties in the field of auto parts.

BYD BYD4H20 engine is a high-performance power heart specially crafted for Yangwang U7 model. As BYD’s high-end flagship sedan, Yangwang U7 has extremely stringent requirements on the power system, and its horizontally opposed structural design puts forward extremely high requirements on the processing precision and quality stability of the cylinder block.
This unique structure gives the engine the advantages of low center of gravity, low vibration and smooth power output, which brings excellent handling stability and ride comfort for the U7, and perfectly fits its high-end luxury market positioning.

In terms of production facilities, Cheng Heng Power has built a new independent production line for the processing of BYD4H20 engine blocks. This production line is equipped with industry-leading processing equipment, which can flexibly cope with the complex structure and shape of the cylinder block and realize all-round, high-precision processing; meanwhile, it is equipped with advanced automatic testing equipment, which runs through the whole process and carries out real-time monitoring of the processing quality of each process.

In the machining process planning, for the top surface of the cylinder block, thrust surface, crankshaft bore and other key important parts, a number of roughing, semi-finishing and finishing processes are carefully designed. According to the special design requirements of BYD4H20 engine cylinder bore, the honing process was optimized in depth. Through repeated tests and parameter adjustments, the honed cylinder bore has a mirror-like smooth surface, and the roughness and cylindricity are controlled within the extremely stringent range, which effectively reduces the friction coefficient between the piston and the cylinder wall, and not only enhances the power output efficiency of the engine, but also significantly prolongs the engine’s service life, and builds up a solid foundation for the vehicle’s excellent performance.