Abstract

The engine control process is usually carried out based on array control algorithms with a fixed mesh size. Modification of control algorithms based on experimental test data requires the use of programs that make it possible to determine the control algorithm param-eters. The article presents the methodology of determining the compression-ignition engine control algorithms. A custom computer pro-gram was presented, which was used to determine the control algorithm parameters. These control algorithms values were determined based on the results of experimental engine tests, and using the presented program. The parameters were introduced into the laboratory compression-ignition engine controller. The experimental tests performed on the engine, whose operation was managed by the pro-grammed laboratory controller, confirmed the usefulness of the proposed methodology for determining input data of control algorithms.

Highlights

  • Standard fuel supply systems, used in modern compression-ignition engines, include common rail injection systems that allow for multi-phase injection

  • The control algorithms are written in the form of one- or two-dimensional arrays [1, 10] depending on the parameter for which they are responsible

  • The specific laboratory programmable controller of diesel engine with the Common Rail system was developed in cooperation with the MiSter company and is characterized by the following parameters: − MCU controller (MiSter Control Unit) is built-in in a compact housing, input-output signals transferred through the standard engine bundle socket 1.3 SDE, no control buttons and displays on the housing, − connection between the electronic system and the bundle socket enables modifying the output of individual signals from the controller as well as the input of parameters to individual pins in the socket

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Summary

Introduction

Standard fuel supply systems, used in modern compression-ignition engines, include common rail injection systems that allow for multi-phase injection. The specific laboratory programmable controller of diesel engine with the Common Rail system was developed in cooperation with the MiSter company and is characterized by the following parameters: − MCU controller (MiSter Control Unit) is built-in in a compact housing, input-output signals transferred through the standard engine bundle socket 1.3 SDE, no control buttons and displays on the housing, − connection between the electronic system and the bundle socket enables modifying the output of individual signals from the controller as well as the input of parameters to individual pins in the socket This is to ensure the possibility of using the controller for various factory engine bundles, − the process of setting and monitoring the engine operating parameters is carried out by a PC controller management program (the controller is connected directly to the engine bundle on the test bench, − MCU software enables monitoring, controlling and archiving defined parameters, − the controller allows to divide the dose into 5 parts, − input parameters (sensors and test bench system), − output parameters (engine control)

Program for determining the parameters of control algorithms
Base experimental tests
Determining the control algorithm parameters
Conclusion

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