Core Insights - The article highlights the successful development of Cautosim, China's first fully domestically developed system simulation software for the automotive industry, addressing the long-standing reliance on foreign tools and enhancing data security [1][4]. Group 1: Product Development and Features - Cautosim V2025 has been upgraded to cover various automotive scenarios, including vehicle power economy, thermal management, and fuel cell systems, achieving significant improvements in modeling accuracy and solving efficiency [1][6]. - The software features a user-friendly modeling environment with drag-and-drop capabilities and a state machine function, enhancing logical modeling efficiency [6]. - Cautosim includes a high-performance multi-disciplinary solver, achieving simulation accuracy of over 95%, comparable to international standards [6]. Group 2: Industry Adaptation and Ecosystem Collaboration - The software has expanded its model library to include 26 specialized libraries and over 500 professional models, supporting advanced scenarios like supercritical cycles and hydraulic chassis [8]. - Cautosim has achieved compatibility with the domestic operating system, enhancing the security and reliability of simulation solutions in the industrial sector [8]. Group 3: Practical Applications and Impact - Cautosim has been applied in over 120 automotive companies, universities, and research institutions, leading to significant improvements in modeling efficiency and reduced overall R&D cycles [9]. - The software's high-precision predictive capabilities help control design errors within ±5%, reducing costs and risks associated with later vehicle debugging [9]. - The development of Cautosim signifies a new level of technological maturity for domestic system simulation software, establishing a complete autonomous capability in the automotive R&D tool sector [9].

Core Insights - The automotive industry is undergoing a significant transformation driven by electrification, intelligence, and connectivity, with industrial simulation software playing a crucial role in this evolution [1] - China Automotive Technology Research Center (CATARC) is focusing on developing domestically produced simulation software, Cautosim, to reduce reliance on foreign products and enhance the competitiveness of China's automotive industry [1][8] Group 1: Cautosim Development - Cautosim is the first domestic Modelica-based multi-disciplinary simulation engine for the automotive sector, enabling efficient multi-physical domain simulations [1][3] - The software supports various deployment modes, including a development version for advanced users, an enterprise version for application scenarios, and a cloud platform for collaborative modeling [3][4] - Cautosim has achieved simulation accuracy comparable to international mainstream software, with key performance parameters having a simulation accuracy of over 95% and prediction errors controlled within ±5% [3][4] Group 2: Model Library and Ecosystem - A high-quality model library is essential for the competitiveness of simulation software, with Cautosim featuring over 2,260 models covering key systems in new energy vehicles and future intelligent connected vehicles [6][8] - The software integrates a mixed modeling system that includes mechanism models, empirical models, and data-driven models, enhancing the development environment for Modelica language [6][8] - CATARC is collaborating with leading enterprises, research institutions, and universities to create an open collaborative ecosystem, promoting modular development of core components [9][10] Group 3: Application and Verification - Cautosim has been applied in over 75 enterprises, universities, and research institutions, collecting more than 800 user feedbacks for continuous product optimization [8][10] - The software has been validated in real-world scenarios, demonstrating its leading capabilities in simulation accuracy, operational efficiency, and openness [8] - CATARC is committed to building a robust intellectual property system, having applied for and authorized 34 patents and 16 software copyrights [8] Group 4: Future Directions - The company aims to establish a "self-controllable, internationally leading" simulation software foundation, focusing on deepening technological breakthroughs and accelerating the deployment of cloud-based solutions [10] - Future developments will include expanding model libraries and upgrading key algorithms to support broader enterprise applications and cross-industry expansion [10] - The goal is to integrate technology, industry, and value chains to support the high-end, intelligent, and green development of China's automotive industry [10]