The Accuracy of Calculating Wave Action in Engine Intake Manifolds

Winterbone, D. E.; Yoshitomi, M.

doi:10.4271/900677

Cited by 29 publications

(9 citation statements)

References 8 publications

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“…This study utilizes a 1-D engine simulation software which is a reliable means to test the varying intake and exhaust systems of an engine. Due to cost effectiveness, simplicity, and capability to adjust countless engine properties, engine simulation software has been frequently used in recent studies [19,[32][33][34]. This particular study utilizes Ricardo WAVE which is an ISO approved commercially accepted one dimensional (1-D) engine simulation software.…”

Section: Modellingmentioning

confidence: 99%

“…This particular study utilizes Ricardo WAVE which is an ISO approved commercially accepted one dimensional (1-D) engine simulation software. As mentioned by Benajes [13], Winterbone and Yoshitomi [34], Silvestri et al [33], Ohata et al [35], Deshmukh et al [19] and Claywell et al [32], one dimensional wave models like Ricardo Wave are suitable and effective means to gather data concerning engine intake and exhaust systems.…”

Section: Modellingmentioning

confidence: 99%

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Exhaust Tuning of an Internal Combustion Engine by the Combined Effects of Variable Exhaust Pipe Diameter and an Exhaust Valve Timing System

2018

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Changes to engine geometry and specifications can produce better torque, power, volumetric efficiency and more. The technique known as wave tuning can lead to better engine torque and power. This paper focuses on increasing the engine torque by improving the exhaust fluid flow through the exhaust manifold. Phasing and intensity of the pressure waves in the exhaust manifold have significant effects on scavenging, valve overlapping and pumping losses. In this research, individual and combined effects of variable exhaust runner diameter and exhaust valve timing on the fluid flow from exhaust of the engine are studied using computer simulation. An engine simulation software, Ricardo Wave, is utilized in this research. The analysis is conducted on a 1-D model of a KTM 510 cc single cylinder, four-stroke Sl engine. The data gathered shows that varying only the exhaust pipe diameter continuously with speed yields an average of 4.23% improvement in torque from the original engine model. However, due to practical constraints, the diameter is limited to vary in three steps (36 mm, 45 mm and 60 mm). This has reduced the average improvement of torque to 3.78%. Varying the valve timing alone gains an average of 1.94% improvement in torque. Varying both the exhaust pipe diameter in three steps and the exhaust valve timing yields an average of 4.69% improvement in torque. This average is conducted over the engine speed ranges from 2000 to 11,000 rpm.

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Section: Modellingmentioning

confidence: 99%

Section: Modellingmentioning

confidence: 99%

Exhaust Tuning of an Internal Combustion Engine by the Combined Effects of Variable Exhaust Pipe Diameter and an Exhaust Valve Timing System

2018

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“…suYciently high for light-oV, the wall concentration of The gas dynamic simulation consists of intake, the exhaust gas can be neglected, r w,i =0, because exhaust system and cylinder units [14,15]. Geometrical suYcient reactant has been consumed at the channel data, ow losses and heat transfer between the pipe wall surface.…”

Section: One-dimensional Gas Dynamic Calculationmentioning

confidence: 99%

“…After the calculation of the gas dynamic model had reached the periodic solution, the simulation was halted (14) and steady state CFD computation started. The velocity where u i (x, y), n and A i represent local ow velocities, imposed on the inlet down pipe of the CFD model was total number of cells on the monolith face and face area obtained from the gas dynamic simulation.…”

Section: Mass Transfer Modellingmentioning

confidence: 99%

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A three-dimensional numerical study of the effect of pulsating flow on conversion efficiency inside a catalytic converter

Jeong

Kim

2001

Proceedings of the Institution of Mechanical Engineers, Part D:

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A study is made of the ow and conversion characteristics of the pulsating ow of an automotive catalytic converter. To investigate the unsteady ow eVects of a dual monolithic catalytic converter of double-ow type, a numerical methodology coupled with wave action simulation based on gas dynamic theory is developed. The ow inside the converter is treated as three dimensional, unsteady compressible and isothermal. Conversion rates through the monolithic channels are calculated under the assumption of being diVusion controlled. The present study indicates that this integrated numerical model successfully represents the conditions of severe interaction among the exhaust ows, the extreme lling and the empty processes that aVect the ow distribution and conversion eYciency. The simulation results also show that the level of ow maldistribution in the monolith heavily depends on the curvature and angles of separation streamline of the mixing pipe that homogenizes the exhaust gas from the individual cylinders. It is also found that, on a double-ow converter system, there are severe interactions of each pulsating exhaust gas ow at the junctions, and consequently junction geometry greatly in uences the degree of ow distribution.

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Optimal Design of Air Intake System of FSCC Triumph Engine

Sun

Yang

2022

Lecture Notes in Electrical Engineering

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The Accuracy of Calculating Wave Action in Engine Intake Manifolds

Cited by 29 publications

References 8 publications

Exhaust Tuning of an Internal Combustion Engine by the Combined Effects of Variable Exhaust Pipe Diameter and an Exhaust Valve Timing System

Exhaust Tuning of an Internal Combustion Engine by the Combined Effects of Variable Exhaust Pipe Diameter and an Exhaust Valve Timing System

A three-dimensional numerical study of the effect of pulsating flow on conversion efficiency inside a catalytic converter

Optimal Design of Air Intake System of FSCC Triumph Engine

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