GPIO‐based rail pressure control for diesel high pressure common rail injection system

Wang, Jiapeng; Sun, Hao; Dai, Chao; Li, Shihua

doi:10.1049/joe.2019.1063

Cited by 6 publications

(4 citation statements)

References 14 publications

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“…v is the angular velocity of the highpressure oil pump, and t v is the lag time of fuel supply control of the high-pressure oil pump. 21 The two-sided integration of equation ( 12) yields:…”

Section: Control Strategy Modelmentioning

confidence: 99%

Simulation study on pressure fluctuation characteristics of a high-pressure common rail system

Gao

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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Pressure fluctuations in the high-pressure common rail systems have a significant impact on the fuel injection and engine performance. In this study, the pressure fluctuation in a high-pressure common rail system was investigated using simulations. The fluctuation can be caused by hydraulic structures and control factors. The degree of influence of those two causes was evaluated and discussed in this work. First, the hydraulic and control factors that dominate the models of injection systems were established. Then, the mechanism of pressure fluctuation on high-pressure common rail systems was highlighted. A dimensionless parameter was defined to quantitatively describe the effects of control factors and hydraulic structures on pressure fluctuation. Finally, the developed model was used to study the effects of injection conditions and structural parameters on pressure fluctuation. The results show that the injection frequency has a limited effect on the system pressure fluctuation. In addition, the increase in the injection energizing time and the injection pressure will increase the hydraulic pressure fluctuations of the system, thus increasing the total pressure fluctuations of the system. Moreover, the increase in the volume by increasing the diameter was found to decrease the pressure fluctuations more effectively compared to the impact of the length, but there is a marginal diminishing effect. The results demonstrated that the effect of a 20 bar signal error and a 160 mm common rail length is almost the same on decreasing pressure fluctuations. It can be concluded that the improvements in the electronic part of the high-pressure common rail system have more potential than the mechanical part.

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Section: Control Strategy Modelmentioning

confidence: 99%

Simulation study on pressure fluctuation characteristics of a high-pressure common rail system

Gao

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Moreover, the fuel injection of injectors, as the main factor, is time-varying and unmatched (Yang et al, 2013). This may bring about undesired impact on both control performance and stability of the HPCR system (Wang et al, 2019). In addition, the effect of the time-varying unmatched disturbance is hard to eliminate from the output (Rauf et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Lately, better control performance has been achieved by researching more advanced control methods for the HPCR systems, including the quantitative feedback theory (Chatlatanagulchai et al, 2009), the model predictive control (MPC) (Wahlström and Eriksson, 2013; Wu et al, 2019), the active disturbance rejection control (ADRC) (Ling et al, 2020; Liu et al, 2013; Xie et al, 2019), and the sliding mode control (SMC) (Cai et al, 2018; Wang et al, 2019; Yang et al, 2016; Yuan et al, 2018) . Among them, the SMC has been considered as a class of effective control methods in the HPCR systems for the strong robustness and disturbance rejection ability (Utkin, 1977).…”

Section: Introductionmentioning

confidence: 99%

GPIO-based nonsingular terminal sliding mode control for high-pressure common rail systems

Dai

Yuan

Sun

et al. 2023

Transactions of the Institute of Measurement and Control

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The ideal fuel rail pressure is a significant component to keep the high-pressure common rail (HPCR) system work stably. The influence of time-varying fuel injection disturbance of the HPCR system is neither fully considered nor well dealt with in traditional rail pressure control approaches. To this end, the rail pressure tracking problem of an HPCR system is investigated in this paper using a generalized proportional integral observer (GPIO)-based composite control algorithm. A nonlinear model of the HPCR system is first established based on fluid dynamics and mechanics laws. Then, a GPIO is utilized to observe the time-varying fuel injection disturbance. Based on the design of a nonlinear sliding surface using the disturbance estimation, a GPIO-based nonsingular terminal sliding mode control (NTSMC) method is proposed to achieve a better rail pressure tracking control performance and a stronger robustness. Finally, a group of simulations in the MATLAB/Simulink environment and experiments in a more realistic Advanced Modeling Environment for performing Simulation of engineering systems (AMESim) environment are conducted, the results of which demonstrate the advantage and effectiveness of the proposed method.

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“…It should be noted that, along with the development of diesel engine power supply systems, direct fuel injection systems were produced, which are characterized by several injections of fuel for one engine cycle and the combustion of an air-fuel mixture; laminated (excess air) in the range of low loads and homogeneous in the range of full loads. Precise control of the fuel injection process is carried out in order to obtain the desired operating parameters, i.e., average usable pressure, rotational speed, and general efficiency, and to reduce the toxicity of exhaust gases and engine noise, which depends mainly on the proper production of a combustible mixture [1][2][3]. This mixture must be characterized by a certain homogeneity and the fragmentation of the fuel into drops of the smallest possible diameter [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Modification of Canola Oil Physicochemical Properties by Hexane and Ethanol with Regards of Its Application in Diesel Engine

et al. 2021

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A mixture of canola oil (Co), n-hexane (Hex), and ethyl alcohol (Et) was proposed as a new energy material for powering diesel engines. For this purpose, surface tension, density, and viscosity measurements, as well as engine tests, were performed for 88%Co10%Hex2%Et and 83%Co15%Hex2%Et mixtures at 20 °C. The adsorption and volumetric properties of these mixtures were compared to those of individual mixture components, as well as diesel fuel (Df) and oleic, linoleic, α-linolenic, palmitic, and stearic acids. It was revealed that the values of surface tension, viscosity, and density of Co were higher than those of the Co components. The addition of 10% Hex and 2% Et to Co caused a more than twofold decrease in its viscosity, while the addition of 15% Hex and 2% Et caused a more than fourfold reduction of Co viscosity. In addition, a mixture of Co with 2% Et and 10% Hex had a density similar to that of Df. In turn, theoretical calculations showed that the addition of n-hexane and ethanol to canola oil only slightly changed its heat of combustion. Engine tests were carried out at fixed engine rotational speeds, with a direct gearbox ratio (4th gear). The quick-changing parameters of the combustion process were registered using an AVL Indimicro system. In these tests it was found that the addition of Et to the mixture of Co and Hex did not significantly shorten the auto-ignition delay, but the kinetic phase during combustion disappeared, which had an impact on the combustion start angle.

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GPIO‐based rail pressure control for diesel high pressure common rail injection system

Cited by 6 publications

References 14 publications

Simulation study on pressure fluctuation characteristics of a high-pressure common rail system

Simulation study on pressure fluctuation characteristics of a high-pressure common rail system

GPIO-based nonsingular terminal sliding mode control for high-pressure common rail systems

Modification of Canola Oil Physicochemical Properties by Hexane and Ethanol with Regards of Its Application in Diesel Engine

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