A Theoretical and Experimental Study of Resonance in a High Performance Engine Intake System: Part 1 2006-01-3653

SL Brennan, RJ Kee, RG Kenny, R Fleck, JA Gaynor, B Fleck

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The unsteady gas dynamic phenomena in engine intake systems of the type found in racecars have been examined. In particular, the resonant tuning effects, including cylinder-to-cylinder power variations, which can occur as a result of the interaction between an engine and its airbox have been considered. Frequency analysis of the output from a Virtual 4-Stroke 1D engine simulation was used to characterise the forcing function applied by an engine to an airbox. A separate computational frequency sweeping technique, which employed the CFD package FLUENT, was used to determine the natural frequencies of virtual airboxes in isolation from an engine. Using this technique, an airbox with a natural frequency at 75 Hz was designed for a Yamaha R6 4-cylinder motorcycle engine. The existence of an airbox natural frequency at 75 Hz was subsequently confirmed by an experimental frequency sweeping technique carried out on the engine test bed. A coupled 1D/3D analysis which employed the engine simulation package Virtual 4-Stroke and the CFD package FLUENT, was used to model the combined engine and airbox system. The coupled 1D/3D analysis predicted a 75 Hz resonance of the airbox at an engine speed of 9000 rpm. This frequency was the induction frequency for a single cylinder. An airbox was fabricated and tested on the engine. Static pressure was recorded at a grid of points in the airbox as the engine was swept through a speed range of 3000 to 10000 rpm. The measured engine speed corresponding to resonance in the airbox agreed well with the predicted values. There was also good correlation between the amplitude and phase of the pressure traces recorded within the airbox and the 1D/3D predictions.
LanguageEnglish
Pages1-13
JournalSAE Transactions
Volume116
Issue numberSection 3
DOIs
Publication statusPublished - 17 Dec 2006
EventMotorsports Engineering Conference and Exhibition - Dearborn, MI, United States
Duration: 5 Dec 20067 Dec 2006

Fingerprint

Intake systems
Engines
Engine cylinders
Natural frequencies
Computational fluid dynamics
Motorcycles
Gas dynamics

Cite this

Brennan, SL ; Kee, RJ ; Kenny, RG ; Fleck, R ; Gaynor, JA ; Fleck, B. / A Theoretical and Experimental Study of Resonance in a High Performance Engine Intake System: Part 1 2006-01-3653. In: SAE Transactions. 2006 ; Vol. 116, No. Section 3. pp. 1-13.
@article{fe3c101dee4a4652b02657ccb44f134a,
title = "A Theoretical and Experimental Study of Resonance in a High Performance Engine Intake System: Part 1 2006-01-3653",
abstract = "The unsteady gas dynamic phenomena in engine intake systems of the type found in racecars have been examined. In particular, the resonant tuning effects, including cylinder-to-cylinder power variations, which can occur as a result of the interaction between an engine and its airbox have been considered. Frequency analysis of the output from a Virtual 4-Stroke 1D engine simulation was used to characterise the forcing function applied by an engine to an airbox. A separate computational frequency sweeping technique, which employed the CFD package FLUENT, was used to determine the natural frequencies of virtual airboxes in isolation from an engine. Using this technique, an airbox with a natural frequency at 75 Hz was designed for a Yamaha R6 4-cylinder motorcycle engine. The existence of an airbox natural frequency at 75 Hz was subsequently confirmed by an experimental frequency sweeping technique carried out on the engine test bed. A coupled 1D/3D analysis which employed the engine simulation package Virtual 4-Stroke and the CFD package FLUENT, was used to model the combined engine and airbox system. The coupled 1D/3D analysis predicted a 75 Hz resonance of the airbox at an engine speed of 9000 rpm. This frequency was the induction frequency for a single cylinder. An airbox was fabricated and tested on the engine. Static pressure was recorded at a grid of points in the airbox as the engine was swept through a speed range of 3000 to 10000 rpm. The measured engine speed corresponding to resonance in the airbox agreed well with the predicted values. There was also good correlation between the amplitude and phase of the pressure traces recorded within the airbox and the 1D/3D predictions.",
author = "SL Brennan and RJ Kee and RG Kenny and R Fleck and JA Gaynor and B Fleck",
year = "2006",
month = "12",
day = "17",
doi = "10.4271/2006-01-3653",
language = "English",
volume = "116",
pages = "1--13",
journal = "SAE Transactions",
issn = "0096-736X",
number = "Section 3",

}

A Theoretical and Experimental Study of Resonance in a High Performance Engine Intake System: Part 1 2006-01-3653. / Brennan, SL; Kee, RJ; Kenny, RG; Fleck, R; Gaynor, JA; Fleck, B.

In: SAE Transactions, Vol. 116, No. Section 3, 17.12.2006, p. 1-13.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A Theoretical and Experimental Study of Resonance in a High Performance Engine Intake System: Part 1 2006-01-3653

AU - Brennan, SL

AU - Kee, RJ

AU - Kenny, RG

AU - Fleck, R

AU - Gaynor, JA

AU - Fleck, B

PY - 2006/12/17

Y1 - 2006/12/17

N2 - The unsteady gas dynamic phenomena in engine intake systems of the type found in racecars have been examined. In particular, the resonant tuning effects, including cylinder-to-cylinder power variations, which can occur as a result of the interaction between an engine and its airbox have been considered. Frequency analysis of the output from a Virtual 4-Stroke 1D engine simulation was used to characterise the forcing function applied by an engine to an airbox. A separate computational frequency sweeping technique, which employed the CFD package FLUENT, was used to determine the natural frequencies of virtual airboxes in isolation from an engine. Using this technique, an airbox with a natural frequency at 75 Hz was designed for a Yamaha R6 4-cylinder motorcycle engine. The existence of an airbox natural frequency at 75 Hz was subsequently confirmed by an experimental frequency sweeping technique carried out on the engine test bed. A coupled 1D/3D analysis which employed the engine simulation package Virtual 4-Stroke and the CFD package FLUENT, was used to model the combined engine and airbox system. The coupled 1D/3D analysis predicted a 75 Hz resonance of the airbox at an engine speed of 9000 rpm. This frequency was the induction frequency for a single cylinder. An airbox was fabricated and tested on the engine. Static pressure was recorded at a grid of points in the airbox as the engine was swept through a speed range of 3000 to 10000 rpm. The measured engine speed corresponding to resonance in the airbox agreed well with the predicted values. There was also good correlation between the amplitude and phase of the pressure traces recorded within the airbox and the 1D/3D predictions.

AB - The unsteady gas dynamic phenomena in engine intake systems of the type found in racecars have been examined. In particular, the resonant tuning effects, including cylinder-to-cylinder power variations, which can occur as a result of the interaction between an engine and its airbox have been considered. Frequency analysis of the output from a Virtual 4-Stroke 1D engine simulation was used to characterise the forcing function applied by an engine to an airbox. A separate computational frequency sweeping technique, which employed the CFD package FLUENT, was used to determine the natural frequencies of virtual airboxes in isolation from an engine. Using this technique, an airbox with a natural frequency at 75 Hz was designed for a Yamaha R6 4-cylinder motorcycle engine. The existence of an airbox natural frequency at 75 Hz was subsequently confirmed by an experimental frequency sweeping technique carried out on the engine test bed. A coupled 1D/3D analysis which employed the engine simulation package Virtual 4-Stroke and the CFD package FLUENT, was used to model the combined engine and airbox system. The coupled 1D/3D analysis predicted a 75 Hz resonance of the airbox at an engine speed of 9000 rpm. This frequency was the induction frequency for a single cylinder. An airbox was fabricated and tested on the engine. Static pressure was recorded at a grid of points in the airbox as the engine was swept through a speed range of 3000 to 10000 rpm. The measured engine speed corresponding to resonance in the airbox agreed well with the predicted values. There was also good correlation between the amplitude and phase of the pressure traces recorded within the airbox and the 1D/3D predictions.

UR - http://store.sae.org/transactions/2007/engines.pdf

UR - http://www.sae.org/technical/papers/2006-01-3653

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85072419532&origin=resultslist&sort=plf-f&src=s&st1=A+Theoretical+and+Experimental+Study+of+Resonance+in+a+High+Performance+Engine+Intake+System%3a+Part+1&st2=&sid=723b9f0e06f46428f7ce43f2ea50531f&sot=b&sdt=b&sl=115&s=TITLE-ABS-KEY%28A+Theoretical+and+Experimental+Study+of+Resonance+in+a+High+Performance+Engine+Intake+System%3a+Part+1%29&relpos=0&citeCnt=0&searchTerm=

U2 - 10.4271/2006-01-3653

DO - 10.4271/2006-01-3653

M3 - Article

VL - 116

SP - 1

EP - 13

JO - SAE Transactions

T2 - SAE Transactions

JF - SAE Transactions

SN - 0096-736X

IS - Section 3

ER -