Title:Multi-objective Optimization of High-speed Solenoid Valve for Biodiesel
Electronic Unit Pump
Volume: 2
Issue: 1
Author(s): Yuanqi Gu, Liyun Fan*, Jianyu Zhang and Yun Bai
Affiliation:
- College of Power and Energy Engineering, Harbin Engineering University, Harbin, China
Keywords:
Biodiesel, electronic unit pump, solenoid valve, response delay, multi-objective optimization, modeFRONTIER.
Abstract:
Background: A larger response delay of a high-speed solenoid valve will cause inaccurate
fuel injection timing and imprecise cycle injection quantity, resulting in diesel engine emission
and increased fuel consumption.
Objective: Biodiesel as an ideal alternative fuel has exceptional advantages in energy conservation,
emission reduction, and low-carbon environmental protection; however, matching with Electronic
Unit Pump (EUP) and its impacts on solenoid valve operation need to be further studied.
Methods: In the present work, a numerical model of EUP fueled with biodiesel was established in
an AMESim environment, which was validated by the experiment. Then, combined with the Design
of Experiments (DOE) method, key parameters influencing the solenoid valve response delay
were predicted: armature residual air gap, spring preload, poppet valve half-angle, valve needle
diameter, and poppet valve diameter.
Results: taking the response delay time of solenoid valve as targets, multi-objective optimization
model for high-speed solenoid valve was established using NSGA-II (non-dominated sorting genetic
algorithm-II) genetic algorithm in modeFRONTIER platform.
Conclusion: The optimized results showed that the delay time of the solenoid valve closing is
reduced by 6%, the opening delay time is reduced by 20.8%, the injection pressure peak is increased
by 1.8MPa, which is beneficial to accurate injection quantity and the application of biodiesel
in diesel engines.
