Research On Control Strategy Of H16 Internal Combustion Engine Based On MotoHawk Platform

Energy shortage,air pollution and other problems are seriously puzzling people’s lives.Governments and auto makers are paying attention to new energy vehicles.Among them,electric vehicles and hydrogen fuel vehicles have become a key development direction with their unique advantages.The quality of the electronic control system directly determines the performance of the engine.in recent years,electronic control units have become more and more powerful,and systems have become more and more complex.The development of electronic control system control strategy has become the key and difficult point in the electronic control design.This article proposes a system of electronic control system design.The engine simulation model was established using the engine simulation software WAVE,and the accuracy of the control model was within 5%.Using WAVE and Simulink co-simulation,the H16 hydrogen engine is explored with changes in throttle opening,air-fuel ratio,compression ratio,and ignition advance angle,and changes in its performance,to complete the performance prediction of the hydrogen engine.This article designs the H16 engine electronic control system.In order to shorten the development cycle and reduce costs,this article adopts the rapid prototyping mode.In the initial stage of development,functional simulation and system simulation were performed.Under the MotoHawk and Simulink platforms,signal flow diagrams were used to design control models,including engine sensor processing models,throttle models,hydrogen injection models,ignition models,and engine state transition models.Then perform offline simulation to verify the correctness of the control model.Among them,the throttle module uses incremental PID closed-loop control model.The hydrogen injection strategy under operating conditions is based on an air-fuel ratio strategy.The ignition control model adopts the main ignition advance angle as the main method and the auxiliary ignition advance angle correction method.This paper builds a hydrogen fuel engine experimental platform and burns themodel C code into the MotoHawk platform to complete signal testing of the engine electronic control system.Including speed signal test,engine status signal test,throttle opening signal test and hydrogen injection signal test.The joint simulation of WAVE and Simulink can understand the performance of hydrogen-fueled internal combustion engines at the beginning of design and speed up the development of electronic control systems.The joint simulation of MotoHawk and Simulink can efficiently and quickly design the engine electronic control system.Through the joint simulation of the two,laying the foundation for the joint simulation of WAVE,Simulink and MotoHawk,in the future can be used to jointly simulate the development of an engine electronic control system.