On April 21st, the second World Internal Combustion Engine Conference with the theme of "Green, Efficient, Intelligent, and Reliable" kicked off in Jinan, Shandong. At the same time as this conference, a grand exhibition was held, and Yuchai exhibited multiple products, showcasing its image as the only power expert in the domestic industry to launch a full range of new National VI products and master the research and development capabilities of new energy power systems such as integrated power generation engine powertrain systems, fuel cells, hybrid powertrains, etc.
Highlight 1: Two National VI diesel engines with a thermal efficiency of 50% are unveiled
At this exhibition, Yuchai showcased for the first time two National VI engines, YCK08 and YCK13, with a thermal efficiency of 50%.
Lin Tiejian, Assistant to the President of Yuchai Corporation and President of Yuchai Engineering Research Institute, introduced in a media interview that as the only enterprise in China that relies on high-efficiency, energy-saving and environmental protection laboratories, Yuchai has always taken the development of high-efficiency, energy-saving, environmentally friendly and intelligent engines as the main line of research and development. According to Yuchai's technical plan, the research and development of 50% thermal efficiency engine technology will be achieved by 2020, and the research and development of 55% thermal efficiency engine technology will be achieved by 2025. At present, Yuchai has successfully achieved its 2020 target and is steadily advancing the research and development of the next generation of engine products.
Lin Tiejian stated that Yuchai's National VI products are the only complete and brand new platform in the industry, laying a solid foundation for improving engine thermal efficiency. The improvement of engine thermal efficiency requires efficient combustion and high explosive pressure. Both YCK13 and YCK08 designs adopt high explosive pressure technology, with YCK08 achieving a 250-300bar high explosive pressure combustion system during design, while the explosive pressure bearing capacity of the National VI products sold in the market is basically 200bar. YCK08 has left a lot of room for further improvement in thermal efficiency in its design for the future. At the same time, after launching the National VI product in 2018, Yuchai increased its core technology research and development around the topic of improving thermal efficiency, and developed new combustion technologies and other core technologies, laying a solid foundation for the development and launch of the next generation of products.
Highlight 2: Showcasing fuel cell systems and two hybrid products
At this exhibition, Yuchai showcased three products from the new energy power family: fuel cell systems, eCVT power split hybrid powertrains, and integrated power generation engine powertrains.
The models of Yuchai fuel cell system are YCFC-A10 and YCFC-A20, with rated output power covering 40-120kW, mainly suitable for 4.5-18 ton trucks and 8-12 meter buses. At present, Yuchai's fuel cell products have been successfully matched with 6-8 meter buses.
The maximum output torque of Yuchai eCVT power split hybrid powertrain is up to 7000 Nm, mainly suitable for 12-20 ton trucks and 10-12 meter buses, with a fuel saving rate of up to 65%. It is reported that starting from the second half of this year, the Yuchai eCVT hybrid powertrain system will be launched in bulk on the market, and it is expected to be launched in large quantities next year.
The rated output power of Yuchai integrated power generation engine powertrain is 300kW, with a peak power of 375kW, mainly suitable for passenger cars, heavy-duty trucks, mining vehicles and other models. At present, this product is widely matched with buses from well-known enterprises such as Yutong, Jinlong, and Jinlu, as well as fully matched with mining vehicles, stackers, and other products from mainstream manufacturers such as Sany and Heli. It has also started small-scale production and deployment. The full lifecycle cost of this product is significantly lower than that of pure electric and other products, with a fuel saving rate of up to 50%, which has been unanimously recognized by customers.
Highlight 3: Tianjin University showcases achievements jointly developed with Yuchai
At this exhibition, there is also a dazzling product, which is the YCK11N natural gas engine exhibited at the Tianjin University Exhibition Hall. It is a joint development between Tianjin University and Yuchai, based on the natural gas engine dilution rapid combustion technology jointly developed by Tianjin University and Yuchai, which solves the three key problems of low thermal efficiency, high heat load, and high nitrogen oxide emissions of natural gas engines.
This product is an excellent result of joint innovation between Yuchai and universities, and won the first prize of the 2020 China Machinery Industry Federation Technology Invention Award. Its performance indicators have reached the international advanced level, and its economic and other performance have been recognized by customers.
During the conference, the Chinese Internal Combustion Engine Society, together with 20 core units in the upstream and downstream engine industry chain, including Yuchai, jointly initiated the establishment of the "China Engine Carbon Neutrality Innovation Alliance".