Development of a High-Performance Electric Pressure Regulator Applied for Compressed-Natural-Gas-Fueled Vehicles

Hung, Nguyen Ba

doi:10.3390/su12197938

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…5 A solenoid pressure regulator, also known as an electric pressure regulator (EPR), equipped on the gaseous fuel injection systems can be considered as an alternative solution, which can be flexibly controlled to regulate the injection pressure based on engine operating conditions. [6][7][8] The EPR operates as a solenoid valve, which is also known as an energy conversion device. [9][10][11] The main components of an EPR consists of a plunger, a spring, a plugnut, a yoke, and a coil.…”

Section: Introductionmentioning

confidence: 99%

Influences of key design parameters to operating performance of a compressed natural gas injection system using solenoid pressure regulator

Hung

2023

International Journal of Engine Research

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A study is carried out to examine the effects of design parameters on operating performance of a compressed natural gas (CNG) injection system. This system consists of a solenoid-type injector, a solenoid pressure regulator, and a rail tube. To depict the operation of the injection system, mathematical models are built, including electrical and mechanical models of a solenoid pressure regulator and a solenoid injector. To control rail tube gas pressure, a control model is built using proportional integral derivative (PID) algorithm. The simulated gas pressure is compared with experimental result for validating the mathematical models. The influences of design parameters, including rail tube volume, stiffness of spring, and number of coil turns in the solenoid pressure regulator, on the operating performance of the CNG system are examined. The simulation results indicate that the stability of controlled gas pressure is increased when increasing the volume of the rail tube and spring stiffness. Besides, by decreasing the number of coil turns in the solenoid pressure regulator, the stability of controlled gas pressure and flow rate of the injection is increased.

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Section: Introductionmentioning

confidence: 99%

Influences of key design parameters to operating performance of a compressed natural gas injection system using solenoid pressure regulator

Hung

2023

International Journal of Engine Research

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“…An EPR is considered a potential solution, which can allow controlling flexibly the output pressure with a wide range of engine operating conditions. 12–14 In other words, the utilization of the EPR can independently control the output pressure for the fuel injection system as well as optimize the engine performance.…”

Section: Introductionmentioning

confidence: 99%

Effects of working conditions on the operating characteristics of an injection system applied on CNG fueled vehicles

Hung

2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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A model-based study is conducted to examine the operating characteristics of an injection system applied on CNG fueled vehicles. This injection system is a combination of an electric pressure regulator, a rail tube, and a solenoid injector. The electric pressure regulator has a great potential to be widely used in injection systems of natural gas-fueled engines due to its flexible operation, which can help to improve the engine performance and reduce emission. This paper presents a simulation study using mathematical models to describe and analyze the operating characteristics of the gaseous fuel injection system, in which models of electric pressure regulator, solenoid fuel injector, and control model for electric pressure regulator are presented. The simulation results are compared with experimental data to validate the simulation models. Effects of working conditions, including coil resistance of the electric pressure regulator, inlet gas pressure, and set pressure in the rail tube, on the operating characteristics of the gaseous fuel injection system are investigated. Simulation results show that when the coil resistance of the electric pressure regulator is increased from 3.1 Ω to 4.1 Ω, the maximum fluctuation of the controlled gas pressure in the rail tube is reduced from 0.017 to 0.012 MPa, respectively. By decreasing the inlet gas pressure of the electric pressure regulator from 2.5 to 2.3 MPa, the controlled gas pressure in the rail tube is more stable with the maximum fluctuation significantly reduced from 0.012 to 0.002 MPa, respectively, which leads to stability in injection flow rate. The increase of set pressure in the rail tube from 0.5 to 0.7 MPa can help to improve the stability of the controlled gas pressure in the rail tube with the maximum fluctuation respectively reduced from 0.002 to 0.001 MPa.

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Development of a High-Performance Electric Pressure Regulator Applied for Compressed-Natural-Gas-Fueled Vehicles

Cited by 2 publications

References 21 publications

Influences of key design parameters to operating performance of a compressed natural gas injection system using solenoid pressure regulator

Influences of key design parameters to operating performance of a compressed natural gas injection system using solenoid pressure regulator

Effects of working conditions on the operating characteristics of an injection system applied on CNG fueled vehicles

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