Preface：Technologies and processes for establishing products from advanced technologiesVC-TURBO engineFlat ride provided by e-4ORCE5. Summarydriving operation and visibility. This experience helps evaluate drivability during driving. Owing to this technology, the evaluation accuracy of the visual field of the mirror and ease of using/viewing the switches for driving operations have improved.After the steps described above and the design of the system and parts were completed, the vehicle prototype is manufactured, and the testing and verification processes are started. This is the process of testing and verifying the assurance of functions and performance at each part, system, and vehicle level.Owing to the recent improvements in testing and simulation technologies, it is now possible to enhance the efficiency of physical testing and verification. By integrating testing and simulation technologies, it is feasible to carry out accurate product development evaluations within a shorter timeframe. This approach has become indispensable, particularly in complex systems.While performing efficient verification When Nissan decided to use the VC-TURBO engine for e-POWER, they aimed to achieve not only high power and low fuel consumption but also a high level of quietness and a comfortable acceleration sound. Compared to conventional engines, the VC-TURBO engine could change the compression ratio in a flexible manner, which required the checking of 2.8 times more constants for conformity. The conformity check was based on various factors, including the ambient environment, driving situations, battery charging status, fuel consumption, emissions, heat management, engine sound, and quietness. Since there were many combinations of driving conditions to be checked, a model-based tool was developed, and simulations, bench tests, and actual vehicle tests were used together to efficiently determine the large number of constants that needed to be conformed to. The “flat ride” concept, which is one of the values offered by e-4ORCE, was realized by fully utilizing the driving simulator. The targets for “flat ride” could not be set by comparing it with those of conventional vehicles. Therefore, Nissan fully utilized the driving simulator, and the targets were set by analyzing “how occupants feel” when a vehicle accelerates and decelerates as well as when pitching motion occurs. Before manufacturing the actual vehicle, a driving simulator was used to check whether it was possible to provide the intended feeling by the design in line with the targets.in the development phase, data are shared with the production engineering department, production plants, and suppliers. This helps ensure cooperation between the members of mass-production quality, production engineering, plant manufacturing, and suppliers to verify and confirm mass-production quality for ensuring build quality. An example of the application of advanced technology to the new X-TRAIL, which is covered in another feature of this technical review, is provided below.When launching ProPILOT as a product, it was necessary to consider various requirements, such as the environment of the roads to drive on, traffic situations, and driving conditions. In addition to performing evaluations of individual parts and systems, driving simulators, and actual vehicle tests on the test tracks, Nissan performed public road driving tests for over several tens of thousands of kilometers to ensure functionality and performance. Another important part of technological development before launching the product was the development of a fail-safe design that enables customers to safely use the product, even if a component fails or if the product becomes subject to an external environment exceeding the functional limit.When Nissan decided to apply ProPILOT to the new X-TRAIL, they undertook developments to improve its display and operability. This was done with the aim of making it more understandable, secure, and safe for customers to use. When optimizing a human-machine interface (HMI), the driving simulator is an essential technology for evaluating the operability of people with different characteristics, such as body build, age group, and driving experience.Technologies that have undergone research and advanced development undergo a development process for application to a product. After that, the technology is established as a product that will be used with pleasure and a sense of security by customers. The process flow does not end even after a product is launched in the market. To further enhance customer satisfaction, further development so that they will evolve further and be ready for the next generation.Based on the technology roadmap, an advanced technology undergoes research and development, advanced development, and development for applying to a product before it is delivered to our customers as a technologies our undergo 3
元のページ ../index.html#8