Performance optimization design of direct injection turbocharged hydrogen internal combustion engine

Abstract

The best energy source for the twenty-first century has been praised as hydrogen energy. The hydrogen internal combustion engine (H2ICE) has captured the interest of several researchers as the primary use of hydrogen energy. The performance computation model of the direct-injection (DI) turbocharged H2ICE was developed using a mix of one-dimensional (1D) performance modeling tools and the H2ICE bench test. The testing results were used to verify and examine the model. The performance ceiling was established after taking backfire and knock into account for H2ICE. The performance boundary was investigated through simulated supercharging, and the optimized turbocharger was selected. Then, in order to achieve the best overall performance of the H2ICE, optimization of the valve phase, hydrogen injection duration angle, compression ratio, and turbocharging matching were performed. Finally, a peak power of 133 kW @ 4500 rpm and a maximum torque of 339 N·m @ 2000 rpm could be reached, and the highest effective thermal efficiency 43.06% was achieved. The performance development tests of various kinds of H2ICEs could be guided by the design methodology.

Keywords

• Direct-injection hydrogen internal combustion engine
• Numerical simulation
• Abnormal combustion
• Performance optimization
• Turbocharging matching