Plenum
Proceedings of the
ITRN2011
31st August – 1st
September,
University College Cork
Kennedy, Woods, Forrest: Development of an air intake and exhaust system for a race car.
DEVELOPMENT OF A NEW AIR INTAKE AND EXHAUST SYSTEM FOR A
SINGLE SEAT RACE CAR
Mr. Damien Kennedy
Dublin Institute of Technology
Dr. Gerry Woods
Dublin Institute of Technology
Mr. Darragh Forrest
Dublin Institute of Technology
Abstract
This paper deals with the design, analyses and testing of a new air intake system for a single seat race car designed and manufactured by a team of DIT students for the 2011 formula student competition in Silverstone. It also deals with the design, CFD analyses and noise emission testing of a new exhaust system for the vehicle which is powered by a 600cc
Suzuki GXR engine. The new air intake system was developed to satisfy the rules of the formula student competition which required a 20mm restriction to be placed on the air intake system. It was a requirement that all engine airflow passed through this restrictor.
Implementation of the air restriction also meant that a new engine map was required for effective operation of engine. This paper looks at a number of different alternative air intake designs and compares the air flow simulations using CFD analyses. The use of rapid prototyping techniques to produce a physical model is discussed. The design and manufacture of a new throttle body is also presented. The process for engine remapping and dyno test results are also presented. The competition also required an exhaust system with noise emissions below 110db. This paper presents the design and analyses of alternative exhaust paths and noise emission testing.
1. INTRODUCTION
The basic function of an air intake system is to provide the throttle bodies with air where it is then mixed with the fuel and sent to the combustion chamber. The construction of the intake system has a major influence on how the engine performs at various RPM’s.
With reference to Fig 1 an
ITRN2011
31st August – 1st
September,
University College Cork
Kennedy, Woods, Forrest: Development of an air intake and exhaust system for a race car.
DEVELOPMENT OF A NEW AIR INTAKE AND EXHAUST SYSTEM FOR A
SINGLE SEAT RACE CAR
Mr. Damien Kennedy
Dublin Institute of Technology
Dr. Gerry Woods
Dublin Institute of Technology
Mr. Darragh Forrest
Dublin Institute of Technology
Abstract
This paper deals with the design, analyses and testing of a new air intake system for a single seat race car designed and manufactured by a team of DIT students for the 2011 formula student competition in Silverstone. It also deals with the design, CFD analyses and noise emission testing of a new exhaust system for the vehicle which is powered by a 600cc
Suzuki GXR engine. The new air intake system was developed to satisfy the rules of the formula student competition which required a 20mm restriction to be placed on the air intake system. It was a requirement that all engine airflow passed through this restrictor.
Implementation of the air restriction also meant that a new engine map was required for effective operation of engine. This paper looks at a number of different alternative air intake designs and compares the air flow simulations using CFD analyses. The use of rapid prototyping techniques to produce a physical model is discussed. The design and manufacture of a new throttle body is also presented. The process for engine remapping and dyno test results are also presented. The competition also required an exhaust system with noise emissions below 110db. This paper presents the design and analyses of alternative exhaust paths and noise emission testing.
1. INTRODUCTION
The basic function of an air intake system is to provide the throttle bodies with air where it is then mixed with the fuel and sent to the combustion chamber. The construction of the intake system has a major influence on how the engine performs at various RPM’s.
With reference to Fig 1 an
References: [1] Devlin, Barry, Investigation into Engine Mapping & Design and Manufacture of an Intake System For a Formula Sudent Car. 2010. [2] Vizard, David, Rule for Intake Manifold Runner Length. [3] Claywell, Mark, Horkheimer, Donald and Stockburger, Garrett, Investigation of Intake Concepts for a Formula SAE Four Cylinder Engine Using 1D/3D (Ricardo WAVE-VECTIS) Coupled Modelling Techniques. 2006, p. 24. [4] Hartman, Jeff, 2003. How to Tune and Modify Engine Management Systems. [5] Delaney, Michael. Intake Manifold Tech: Runner Size Calculations. www.teamintegra.net. [Online] 30 09 2002. http://www.teamintegra.net/forum/blogs/michaeldelaney/130-intake-manifold-tech-runner-sizecalculations.html.