Tinwood's first multi-point injection gas system technology for natural gas engines

Recently, the domestic first-in-situ natural gas engine multi-injection gas system jointly developed by Xichai and FAW Technology Center has successfully completed tests on multiple rounds of functional and mechanical durability, and was successfully carried on the Xichai natural gas engine. In the first application of natural gas engines, it not only broke the monopoly situation of its systems abroad, but also increased the performance advantages of natural gas engines while saving more than 30% of its cost.

As we all know, before the successful development of the multi-spotted injection gas system of the Xichai natural gas engine, domestic gas engines for large and medium-power natural gas engines generally use international suppliers such as WOODWARD and Eé„„CONTROLS, and their development of core technological capabilities is limited. The price is high. The multi-point injection technology of natural gas engines independently developed by Xichai has abandoned the current single-point injection technology and is a domestic initiative. It adopts the gas rail + gas nozzle technology route. Each cylinder has gas nozzles evenly distributed on the air rails and extends its ducts near the inlet valves of each cylinder to achieve multi-point controllable injection. This not only improves the natural gas engine's instantaneous Responsiveness also eliminates the phenomenon of tempering and cracking produced by natural gas engines when using foreign single point injection systems.

Compared with foreign natural gas fuel systems, Xichai natural gas engine multi-point injection gas system has the advantages of more accurate air-fuel ratio control, better vehicle acceleration and deceleration, better low-speed dynamic performance, and lower gas consumption rate. At the same time, the independently developed Xichai natural gas engine has a smaller number of components for multi-injection gas systems than foreign systems. This reduces the user's maintenance costs and enhances the adaptability of the Xichai natural gas engine to the entire vehicle. The injection system has obvious advantages.

The independently researched and developed Xichai natural gas engine multi-injection gas system has won the recognition of experts and users both in terms of technological innovation and social benefits, not only breaking the monopoly of foreign systems, but also improving the natural gas engine. At the same time, the product price is much lower than that of the international system, which fully reflects Xichai's strong R&D strength as a “Chinese power expert” and lays a solid foundation for FAW Xichai’s image of “high-end power” in the industry.

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