Backfire control and power enhancement of a hydrogen internal combustion engine

摘要: Abstract Frequent backfire can occur in inlet port fuel injection hydrogen internal combustion engines (HICEs) when the equivalence fuel–air ratio is larger than 0.56, thus limiting further enhancement of engine power. Thus, to control backfire, an HICE test system and a computational fluid dynamics model are established explore factors that cause under high loads. The temperature concentration gas mixture near intake valves among essential result backfire. Optimizing timing pressure reduces distribution high-concentration through valve, allowing Controlling enables work normally at (even beyond 1.0). A with optimized demonstrates significant power output.