On September 29, the first 4F overhead camshaft of the electronically controlled Guotai 4 high-speed diesel engine developed on the basis of the 4F platform was successfully ignited in the laboratory of the Yuchai Engineering Research Institute, signifying Yuchai’s new realization in the light vehicle diesel engine sector. Breakthroughs have established the industry's technological leadership.

YC4F overhead camshaft diesel engine application DCR high pressure common rail system development, the design of the use of overhead camshaft technology, so that the engine's calibration speed of 3800r/min or more, the power can be increased to 90kW or more. In addition, a set of cooling EGR system with ejector function has been carefully designed to improve the EGR rate and uniformity, and particle capture technology has been used in the post-processing to ensure that the engine meets the national 4 emission standard. These advanced technologies have been developed and applied. At present, it is at the leading level among similar light diesel engines in China.

The development of the YC4F camshaft high-speed diesel engine is mainly aimed at adapting the SUV. During the design, the external dimensions, especially the height dimensions, have been strictly controlled. At the same time, the front-end wheel train has been specifically designed to meet the requirements of the package. . In the process of designing and developing major components, the project team collaborates with professional suppliers to perform simultaneous design, modeling, and CAE calculation and analysis to make the trial production of components more professional and more reasonable. In the design of basic components, the original 4F platform has been inherited from the basic design, with few changes to the original machine, and the overhead camshaft can be subtly implemented. The generalization of components is extremely high, reducing manufacturing and management costs; in addition, gear transmission and chain The clever combination of transmissions takes into account both durability and noise.

The successful research and development of the 4F overhead camshaft light high-speed diesel engine is another fruitful achievement of Yuchai's independent innovation. Currently Yuchai Engineering Research is accelerating the development of machinery and putting products into the market as soon as possible.

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