Experimental investigation of the effect of nozzle throat diameter on the performance of a hybrid rocket motor with swirling injection of high-concentration hydrogen peroxide

Wei, S. S.; Lee, Meng-Chieh; Chien, Yu-San; Chou, T. H.; Wu, Jong-Shinn

doi:10.1016/j.actaastro.2019.07.020

Cited by 20 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where, l r is the total flux, i r is the coil current, and R r is the coil resistance. Here l r is represented by (2).…”

Section: Injector Electromechanical Modelmentioning

confidence: 99%

“…When the needle movement is controlled, only the injection timing is followed, and the amount of sprayed fuel is not fully controlled. It is possible to increase the engine efficiency by controlling the mass flow 2,3 rather than the needle movement because doing it allows the injection of an exact amount of fuel. Currently, mass flow controllers are used for purposes such as urea dosing to eliminate hazardous gases from diesel engines, 4 gas dosing into bioreactors for bacterial growth, 5 and creating different gas or liquid mixtures for different chemical reactions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mass flow rate control of solenoid-based injectors

Qureshi,

Kara,

Ertunç

et al. 2023

International Journal of Engine Research

View full text Add to dashboard Cite

This paper presents a mass flow rate control method for solenoid-based injectors in open-loop, that is, without physical sensor feedback. Measuring the mass flow rate in injectors is important because the performance of the injector determines fuel consumption and emissions. While it is possible to perform this control using different types of sensors, this would increase the cost and reduce the reliability. With this study, it was aimed to control the mass flow rate of solenoid-based injectors using continuous switching control to regulate the injector’s needle displacement without using sensors. For this purpose, a solenoid-actuated injector prototype was created. Model-based estimators were used to determine the states of the injector, while a super-twisting sliding mode controller was used to track the desired mass flow rate references. The results of the experiments showed that tracking for sinusoidal, triangular, and square trajectories yielded a mass flow rate percent error of less than 1.06. The proposed open-loop control algorithm can be used to track different mass flow rate references in internal combustion engines.

show abstract

“…where, l r is the total flux, i r is the coil current, and R r is the coil resistance. Here l r is represented by (2).…”

Section: Injector Electromechanical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mass flow rate control of solenoid-based injectors

Qureshi,

Kara,

Ertunç

et al. 2023

International Journal of Engine Research

View full text Add to dashboard Cite

show abstract

“…The mass flow rate of hydrogen injection is determined by both the nozzle diameter and the hydrogen injection pressure. Reducing the nozzle diameter and the hydrogen injection pressure alone can reduce the intake blockage caused by hydrogen expansion [16][17][18]. In order to solve the problem of intake blockage in hydrogen internal combustion engines, this article uses quantum genetic algorithm and improved quantum genetic algorithm to optimize the nozzle diameter and hydrogen injection pressure, find the optimal nozzle diameter and hydrogen injection pressure, and then solve the problem of intake blockage.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Hydrogen Injection Flow Rate for Hydrogen Internal Combustion Engines Based on IQGA

Guo

Wang

2023

jest

View full text Add to dashboard Cite

The density of hydrogen is extremely low, and during fuel supply, hydrogen gas will rapidly expand from the hydrogen injection port into the intake duct, leading to air supply blockage. To eliminate intake blockage in hydrogen fueled internal combustion engines and improve their overall performance. This article investigates the effects of different hydrogen injection rates (hydrogen injection pressure and nozzle diameter) on the performance of hydrogen internal combustion engines at low speeds, based on an improved quantum genetic algorithm (IQGA) and a combination weighting method. The results show that compared with the standard quantum genetic algorithm (QGA), IQGA has faster convergence speed and higher convergence accuracy. By using IQGA to optimize the nozzle diameter and hydrogen injection pressure, it can be concluded that when 3mm and 1.5bar are selected for hydrogen internal combustion engines, intake blockage is less likely to occur; Changing the nozzle diameter and hydrogen injection pressure separately has a significant impact on the flow state of the mixed gas in the inlet duct, and the nozzle diameter has a more significant effect on the inlet blockage than the hydrogen injection pressure. The coupling effect of the two is reflected in the impact of the hydrogen injection mass flow rate on the flow state of the mixed gas in the inlet duct. There is a strict linear relationship between the hydrogen injection mass flow rate and the maximum return flow rate. When the hydrogen injection mass flow rate is not higher than 2.29kg/h, before the inlet valve is closed, No intake back flow occurs; through the combination weighting method, it can be concluded that the comprehensive performance of hydrogen internal combustion engines is the best when the nozzle diameter is 5mm and the hydrogen injection pressure is 3bar.

show abstract

Experimental test analysis of a 300 N hybrid rocket engine

Srivastava,

Thakur,

Gupta

et al. 2024

View full text Add to dashboard Cite

Experimental investigation of the effect of nozzle throat diameter on the performance of a hybrid rocket motor with swirling injection of high-concentration hydrogen peroxide

Cited by 20 publications

References 8 publications

Mass flow rate control of solenoid-based injectors

Mass flow rate control of solenoid-based injectors

Optimization of Hydrogen Injection Flow Rate for Hydrogen Internal Combustion Engines Based on IQGA

Experimental test analysis of a 300 N hybrid rocket engine

Contact Info

Product

Resources

About