International Journal of Automotive Technology

, Volume 20, Issue 1, pp 187–195 | Cite as

Analysis of Vibration on an Engine Block Caused by Combustion in a Diesel Engine

  • Yoonwoo Lee
  • Seunghyun Lee
  • Hoimyung Choi
  • Kyoungdoug MinEmail author


An accelerometer replaced an in-cylinder pressure sensor to detect the combustion status. The correlation between the vibration on an engine block caused by direct combustion as well as the combustion status was analyzed. The direct combustion vibration was determined. The direct combustion vibration on an engine block was blended with indirect combustion vibrations and other accessories. In addition, the combustion status was specified among several combustion status parameters, namely, RoHR, MPRR, and the peak pressure. There were two distinct vibrations in the motoring state. The frequency range of 2.5–8 kHz and 0–10°CA aTDC was assumed to be a crankshaft vibration. The other vibration, 1–3 kHz and 20–30°CA aTDC, was estimated as a slap motion of the piston. The combustion vibration frequency was 0.1–8 kHz after combustion. As an injector vibration (3–8 kHz) disrupted the search for combustion noise, a 0.1–2 kHz vibration range was appropriate for finding the correlation with the direct combustion state and the peak of the RoHR. As the peak of the RoHR was proportional to the combustion noise, the estimated peak of the RoHR can be used to control the diesel engine’s combustion noise. Estimation was possible in the transient and steady states.

Key words

Compressed ignition combustion control Combustion noise Combustion vibration Rate of heat release rate Max pressure rise rate 



after top dead center


crank angle degree


continuous wavelet transform


start of injection


end of injection


mass fraction burned


main injection timing


max pressure rise rate


pressure rise rate


rate of heat release


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Copyright information

© The Korean Society of Automotive Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Yoonwoo Lee
    • 1
  • Seunghyun Lee
    • 1
  • Hoimyung Choi
    • 2
  • Kyoungdoug Min
    • 1
    Email author
  1. 1.Department of Mechanical and Aerospace EngineeringSeoul National UniversitySeoulKorea
  2. 2.Department of Mechanical EngineeringGachon UniversityGyeonggiKorea

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