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On January 11th, the "GJT112 Wheel Dozer Heat Balance Improvement Appraisal Meeting" held at Zhengzhou Fuyang Hotel made headlines. Yutong Heavy Industry Co., Ltd.'s "GJT112 Wheel Type Bulldozer Heat Balance System Improvement" project was recognized for its innovative design, advanced technology, and stable performance. The system has proven to be reliable, with key performance metrics reaching the domestic leading level in similar products. It brings significant military and economic benefits, and has great potential for future application. The project successfully passed the expert review conducted by multiple authoritative institutions, including the General Assembly Department of Land and Equipment, the General Armament Department, the Engineering and Military Bureau, the Institute of Engineering and Technology from the Polytechnic University, the General Assembly Engineering Research Institute II, the Beijing Military Region Command Engineering Research and Design Institute, the Jinan Military Region Command Engineering Research and Design Institute, Tsinghua University, and Guangdong Dahua Rensheng Technology Co., Ltd.
The GJT112 wheel-type bulldozer is a new model developed by Yutong in 2003 and deployed into military service. To enhance the equipment’s maneuverability and improve its adaptability to high-altitude environments, the product development team initiated an improvement project on the heat balance system starting in October 2003. After two years of research and development, the traditional engine-driven fan system was upgraded to an independent closed-loop electronically controlled hydraulic motor-driven system. This improved system can automatically adjust the fan speed based on the temperature of the torque converter oil, working device hydraulic oil, engine coolant, and air volume changes. As a result, the overall machine achieves an optimal operating temperature range, offering excellent heat dissipation performance and energy efficiency. This innovation effectively addresses the issue of plateau adaptability. During field use, the GJT112 has received high praise from engineering troops for its strong mobility, light weight, flexibility, and reliability.