Multi-objective cooperation optimization research on dynamic response and energy loss of high-speed solenoid valve for diesel engine injector.

This article focuses on the multi-objective cooperative optimization of the dynamic response and energy loss of high-speed solenoid valves (HSV) used in diesel engine injectors. A finite element simulation model of HSV was developed and validated experimentally to analyze internal energy distribution, revealing that eddy current energy and Joule energy constitute the primary sources of heat loss affecting HSV reliability. Response surface models (RSMs) for opening and closing response times, as well as eddy current and Joule energy losses, were constructed using key parameters—electroconductibility, spring stiffness, damping coefficient, and coil resistance—and optimized via the non-dominated sorting genetic algorithm II (NSGA-II). The optimization achieved reductions of approximately 15% in response times and up to nearly 50% in Joule energy loss, demonstrating a trade-off between dynamic performance and energy efficiency. These findings provide a theoretical basis for improving HSV design by balancing fast dynamic response with minimized energy loss to enhance operational reliability.