A review of the design and control using computational fluid dynamics of gasoline direct injection engines

Mohamad, Barhm; Ali, Mohammed K.

doi:10.29354/diag/153373

Cited by 3 publications

(4 citation statements)

References 20 publications

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“…Navier-Stokes equations (NSE) outline every aspect of everything that is flowing across the cosmos; they describe the Newtonian fluid movement [13,20,21]. However, finding exact solutions to the NSE poses insurmountable mathematical challenges because there are non-linear partial differential equations (PDE).…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…CFD plays a significant role in engineering predictions that it is now regarded as a new 3D dimension in fluid dynamics, alongside pure experiment and pure theory as the 2D other dimensions [13][14][15]. Moreover, the fluid flow prediction using modern CFD software can unveil many features of dynamic flow, heat and mass transfer, chemical reactions, and many other related physico-chemical phenomena by solving a set of complicated mathematical equations [16,17].…”

Section: Introductionmentioning

confidence: 99%

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CFD Simulation of Laminar Rotating Flow Inside a Membrane Filter Vessel

Ladeg

Moulai‐Mostefa²,

Ding³

2023

ARFMTS

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In this study, computational fluid dynamics (CFD) was used to simulate a steady-state rotating flow inside a filtration system. The shape of a 3-D vessel was designed and then meshed using ANSYS design modular (DM) and workbench mesh. The laminar viscous regime was employed; it was identified using the Reynolds number formula. As a boundary layer, the zero inlet velocity and atmospheric pressure were imposed on the inlet boundary. The obtained results showed that for a rotating velocity of 50 rpm, the shear stress distribution on the membrane surface is extremely low, except for four narrow regions situated between the extremities of the impeller and the vessel wall. The pressure variation versus z axes, below the impeller, was almost constant, and it was unevenly distributed on the membrane surface, with two areas of negative pressure. The velocity values below the impeller were higher than those above. This study provides good insights that suggest designing the impeller shape under the most extreme conditions (rotating velocity, flow regime, and pressure inlet) of the membrane. The filtration process will be performed in a future study.

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Section: Theoretical Backgroundmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CFD Simulation of Laminar Rotating Flow Inside a Membrane Filter Vessel

Ladeg

Moulai‐Mostefa²,

Ding³

2023

ARFMTS

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“…The heat exchanger performance evaluation coefficient (PEC) was calculated from the following equation (Ali et al, 2023;Ali & Mohamad, 2022;Berkache et al, 2022;Quader et al, 2023;Shrirao et al, 2013):…”

Section: Ch= 𝑚ḣ×Cph (11)mentioning

confidence: 99%

Enhancing the Efficiency of the Double-Tube Heat Exchanger by Using a Twisted Inner Tube

Ali,

Tahir

2023

AMME

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This study utilized two double tube-type heat exchangers. The first exchanger employed a smooth inner tube, while the second one utilized a twisted inner tube. The shell was constructed of plastic (PVC), while the tube was made of copper with a length of 1000 mm, an outer diameter of 62.24 mm, a smooth tube inner diameter of 14.2 mm, and an equivalent diameter of 11.8 mm for the twisted tube. To minimize heat loss, the shell was insulated externally with a thermal insulator. A flow rate of 3 liters per minute of hot water was passed through a ring-shaped tunnel, with an inlet temperature of 63 °C, to enhance the heat exchanger's performance. The experimental results of the two heat exchangers (smooth and twisted inner tubes) were compared, and the use of water as the primary fluid led to improved performance. The twisted inner tube-type heat exchanger achieved a maximum efficiency of 0.33 at a volumetric flow rate of 5 liters per minute, while the maximum improvement in effectiveness was 65.71% at a volume flow rate of 3 liters per minute in the twisted inner tube-type heat exchanger.

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“…In gasoline engines that use a multi-point injection (MPI) fuel system, the fuel injection pressure has an optimum pressure value for both low fuel consumption and exhaust emissions (Sriyanto et al, 2019). The main challenge in optimizing the combustion system in direct injection gasoline engines is to improve volumetric performance and homogeneity of the fuel-air mixture by reducing wetting of the fuel surface thereby increasing power output (Ali and Mohamad, 2022). The wettability of the fuel can be reduced by increasing the pressure of the fuel system resulting in an increase in the homogeneity of the mixture due to increased spray atomization and mixture preparation (Piock et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Fuel Pump Pressure Variations on the Performance of 2-Stroke Gasoline Direct Injection Engines

Darwin Rio Budi Syaka,

I Wayan Sugita,

Nugroho Gama Yoga

et al. 2024

ASIIMETRIK

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The direction of technological development in 2-stroke gasoline direct injection engines is to improve engine performance and reduce exhaust gas pollution, where the solution to achieve this is to use a high-pressure electric fuel pump that produces stable fuel pressure and is practical in its application. This research aims to determine the influence of variations in fuel pressure on the performance, especially torque and power, of a 2-stroke gasoline direct injection engine. Tests were carried out on a 110 cc 2-stroke gasoline direct injection motorcycle engine using Research Octane Number (RON) 90 fuel at varying fuel pressures of 7.5 Bar, 8 Bar, and 8.5 Bar on a chassis dynamometer to obtain engine performance data in the form of torque and power. The results of this research show that increasing fuel pressure will increase the atomization of fuel particles so that it will influence increasing the performance of this engine, where maximum torque and power of 6.20 Nm and 2.00 kW are achieved at 3250 rpm, at a pressure of 8.5 Bar.

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A review of the design and control using computational fluid dynamics of gasoline direct injection engines

Cited by 3 publications

References 20 publications

CFD Simulation of Laminar Rotating Flow Inside a Membrane Filter Vessel

CFD Simulation of Laminar Rotating Flow Inside a Membrane Filter Vessel

Enhancing the Efficiency of the Double-Tube Heat Exchanger by Using a Twisted Inner Tube

The Influence of Fuel Pump Pressure Variations on the Performance of 2-Stroke Gasoline Direct Injection Engines

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