In October 2025, with the rapid expansion of the new energy vehicle market, the technology of automotive tailpipe mufflers will undergo a key upgrade. The patented technology of "Inner Component Press-in fixture" developed by Shandong Keyuan Automotive Exhaust Purification System Co., Ltd. has significantly enhanced the connection tightness between the inner component and the outer shell by optimizing the internal structure of the muffler, solving the problem of gas leakage caused by insufficient air tightness in traditional mufflers.

This technology adopts a high-precision pressure block and touch pressure sensor linkage design, which can monitor the installation status of the internal components in real time and ensure that the fit between the partition board and the inner wall of the shell reaches the millimeter level of accuracy. Experimental data shows that the muffler applying this technology has an 18% increase in the attenuation rate of high-frequency noise (2000-4000Hz), while reducing the exhaust back pressure by 12%, effectively enhancing the power output efficiency of the engine.

"New energy vehicles have much higher requirements for noise reduction than traditional fuel vehicles." " Experts from the Society of Automotive Engineers of China pointed out, "Keyuan's technological breakthrough not only meets the strict noise decibel requirements of the National VII emission standards, but also provides the industry with a low-cost and highly reliable noise reduction solution." At present, this technology has passed the real vehicle tests of automakers such as BYD and NIO, and it is expected to cover 80% of new energy vehicle models by 2026.