Investigation of Control Method for Starting of Linear Internal Combustion Engine-Linear Generator Integrated System

Paper #:
  • 2015-01-1729

Published:
  • 2015-04-14
DOI:
  • 10.4271/2015-01-1729
Citation:
Sun, C., Wang, Z., Yin, Z., and Zhang, T., "Investigation of Control Method for Starting of Linear Internal Combustion Engine-Linear Generator Integrated System," SAE Technical Paper 2015-01-1729, 2015, doi:10.4271/2015-01-1729.
Pages:
7
Abstract:
The linear internal combustion engine-linear generator integrated system (LICELGIS) is a generating unit with high power density, high efficiency and low emission for the range-extended electric vehicle. The LICELGIS starts with the linear generator, which shows the advantages of speed, efficiency and emission reduction, as well as the prerequisite to guarantee the steady operation of the system.This paper focuses on the reversing control method and the energy utilization efficiency in the starting process of the LICELGIS.Pursuant to the starting requirements of the linear internal combustion engine, the fewest driving cycle and the evaluation index are obtained. Meanwhile, the velocity tracking mode and the position tracking mode is proposed for the control of the starting force reversing. The motions of the starting process under two control method are comparatively analyzed, indicating that the former has a high efficiency, while the latter is more likely to achieve.The starting process of the LICELGIS is simulated on the validated mathematical model with the position tracking mode to analyze the impact of the different starting parameters including the initial position, the magnitude of starting force, and the reversing position of the starting force.An improved position tracking mode with variable reversing positions is proposed, synthesized both the features of the velocity tracking mode and the position tracking mode. The reversing positions of the starting force each cycle are determined by what under the velocity tracking mode. This optimized method can be the scheme for the starting experiment of the system prototype.
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