Swirl combustion system for low smoke and particle emissions

Raimo Turunen, Christer Wik, Alfred-Herman Selvaraj

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsProfessional

Abstract

In large diesel engines, mixing of fuel and air in the combustion chamber is usually generated by turbulence caused by the fuel jet. At low loads, with conventional fuel injection systems, the injection pressure is, however, low resulting in weak turbulence and large droplet sizes. This is considered a main reason for high smoke and particle emissions at low load in large diesel engines. A concept with increased horizontal swirl in the combustion chamber of a medium- speed diesel engine by modification of the intake air channel shape has been developed for solving problems mentioned above. Subsequently, proper modifications in combustion chamber shape and fuel injection spray pattern, for avoiding fuel jet - cylinder liner wall contact, has been performed utilising a CFD tool to optimise whole engine performance. A so called squish effect has been achieved with the new deep-bowl piston
Original languageEnglish
Title of host publicationCIMAC Technical Paper Database
Place of PublicationFrankfurt
Publication statusPublished - 2010
MoE publication typeD3 Professional conference proceedings
Event26th CIMAC World Congress on Combustion Engines - Bergen, Norway
Duration: 14 Jun 201017 Jun 2010

Conference

Conference26th CIMAC World Congress on Combustion Engines
CountryNorway
CityBergen
Period14/06/1017/06/10

Fingerprint

Combustion chambers
Smoke
Diesel engines
Jet fuel
Fuel injection
Turbulence
Air intakes
Engine cylinders
Pistons
Contacts (fluid mechanics)
Computational fluid dynamics
Engines
Air

Keywords

  • diesel engine
  • combustion
  • smoke
  • particle

Cite this

Turunen, R., Wik, C., & Selvaraj, A-H. (2010). Swirl combustion system for low smoke and particle emissions. In CIMAC Technical Paper Database [16] Frankfurt.
Turunen, Raimo ; Wik, Christer ; Selvaraj, Alfred-Herman. / Swirl combustion system for low smoke and particle emissions. CIMAC Technical Paper Database. Frankfurt, 2010.
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title = "Swirl combustion system for low smoke and particle emissions",
abstract = "In large diesel engines, mixing of fuel and air in the combustion chamber is usually generated by turbulence caused by the fuel jet. At low loads, with conventional fuel injection systems, the injection pressure is, however, low resulting in weak turbulence and large droplet sizes. This is considered a main reason for high smoke and particle emissions at low load in large diesel engines. A concept with increased horizontal swirl in the combustion chamber of a medium- speed diesel engine by modification of the intake air channel shape has been developed for solving problems mentioned above. Subsequently, proper modifications in combustion chamber shape and fuel injection spray pattern, for avoiding fuel jet - cylinder liner wall contact, has been performed utilising a CFD tool to optimise whole engine performance. A so called squish effect has been achieved with the new deep-bowl piston",
keywords = "diesel engine, combustion, smoke, particle",
author = "Raimo Turunen and Christer Wik and Alfred-Herman Selvaraj",
note = "Project code: 17243",
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booktitle = "CIMAC Technical Paper Database",

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Turunen, R, Wik, C & Selvaraj, A-H 2010, Swirl combustion system for low smoke and particle emissions. in CIMAC Technical Paper Database., 16, Frankfurt, 26th CIMAC World Congress on Combustion Engines, Bergen, Norway, 14/06/10.

Swirl combustion system for low smoke and particle emissions. / Turunen, Raimo; Wik, Christer; Selvaraj, Alfred-Herman.

CIMAC Technical Paper Database. Frankfurt, 2010. 16.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsProfessional

TY - GEN

T1 - Swirl combustion system for low smoke and particle emissions

AU - Turunen, Raimo

AU - Wik, Christer

AU - Selvaraj, Alfred-Herman

N1 - Project code: 17243

PY - 2010

Y1 - 2010

N2 - In large diesel engines, mixing of fuel and air in the combustion chamber is usually generated by turbulence caused by the fuel jet. At low loads, with conventional fuel injection systems, the injection pressure is, however, low resulting in weak turbulence and large droplet sizes. This is considered a main reason for high smoke and particle emissions at low load in large diesel engines. A concept with increased horizontal swirl in the combustion chamber of a medium- speed diesel engine by modification of the intake air channel shape has been developed for solving problems mentioned above. Subsequently, proper modifications in combustion chamber shape and fuel injection spray pattern, for avoiding fuel jet - cylinder liner wall contact, has been performed utilising a CFD tool to optimise whole engine performance. A so called squish effect has been achieved with the new deep-bowl piston

AB - In large diesel engines, mixing of fuel and air in the combustion chamber is usually generated by turbulence caused by the fuel jet. At low loads, with conventional fuel injection systems, the injection pressure is, however, low resulting in weak turbulence and large droplet sizes. This is considered a main reason for high smoke and particle emissions at low load in large diesel engines. A concept with increased horizontal swirl in the combustion chamber of a medium- speed diesel engine by modification of the intake air channel shape has been developed for solving problems mentioned above. Subsequently, proper modifications in combustion chamber shape and fuel injection spray pattern, for avoiding fuel jet - cylinder liner wall contact, has been performed utilising a CFD tool to optimise whole engine performance. A so called squish effect has been achieved with the new deep-bowl piston

KW - diesel engine

KW - combustion

KW - smoke

KW - particle

M3 - Conference article in proceedings

BT - CIMAC Technical Paper Database

CY - Frankfurt

ER -

Turunen R, Wik C, Selvaraj A-H. Swirl combustion system for low smoke and particle emissions. In CIMAC Technical Paper Database. Frankfurt. 2010. 16