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A study on the characteristics of combustion variations of compression ignition engine

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Abstract

This paper describes the results of a study of the variation of combustion characteristics in a precombusion chamber type water-cooled diesel engine. Statiscal analysis on cycle-by-cycle variation of combustion characteristics such as rate of pressure rise, heat release rate, and mass burning rate from combustion pressure-crank angle data of one thousand cycles were made under several operating conditions.

The influence of engine speed and coolant temperature upon maximum frequency of combustion characteristics are discussed also.

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Abbreviations

BDC:

Bottom dead center

BR:

Mass burning rate

CA:

Crank angle

F.D.:

Frequency distribution

H o :

Stagnation enthalpy

HR:

Rate of heat release(=dQ/dϕ)

(HR)max :

Maximum rate of heat release

k:

Total number of sample

n :

Engine speed

(P)max :

Maximum pressure

(P max)m :

Mean value of peak pressure

PR:

Rate of pressure rise(=dP/dϕ)

(PR)max :

Maximum rate of pressure rise

S :

Standard deviation

T c :

Cooling water temperature

TDC:

Top dead center

U :

Internal energy

W :

Work

V :

Cylinder volume

Q :

Heat

Δ:

Time interval of measurement

ϕ(HR)max :

Crank angle at maximum rate of heat release

ϕ(PR)max :

Crank angle at maximum rate of pressure rise

ξ :

Specific heat ratio

τ :

Time

References

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  2. Nohira, H., Konomi, T. and Ishiyama, S., 1977, “Statistical Analysis of Pressure Indicator Data of an I.C.Engine (Report No.2,” Toyoda Engineering, Vol. 27, No.2, pp.137–148.

  3. Peters, B.D. and Borman, G.L., 1964, “Cyclic Variation and Average Burning Rates in a S.I.Engines”, SAE Paper 700064.

  4. Sanda, S., Inoue, T., Oishi, K. and Yamada, T., 1984. “Combustion Characteristic of Divided Chamber Homogeneous Combustion System,” Toyoda Engineering, Vol. 28, No.2, pp.171–178.

  5. Sanda, S., Toda, T. and Konomi, T., 1982, “Statistical Analysis of Pressure Indicator Data of an Internal Combustion Engine”, SAE Paper 770882.

  6. Sawa, N., Hori, S. and Ebisawa, S., 1975, “An Experimental Study on a Methanol Fueled Engine,” Research Report of Faculty of Engineering, Ibaraki University, Vol. 23, pp.23–27.

  7. Sowa, N., Hori, S. and Uchida, S., 1981, “Cyclic Variation Character of Combustion Pressure in Pre-Combustion Chamber Disel Engine,” Internal Combustion Engine, Vol. 21, No.256, p.12.

  8. Toda, T., Nohira, H. and Konomi, T., 1976, “Measurement and Analysis of Engine Pressure Indicator Diagram,” The Toyota Engineering, Vol. 25, No.4, pp.8–14.

  9. Toda, T., Nohira, H., Konomi, T. and Ishiyama, S., 1977, “Indicator Analysis of Toyota Lean Burn Engine,” Toyota Engineering, Vol. 26, No.2, pp.167–175.

  10. Yamada, T., Mitomi, T., Chikahisa, T., Miyamoto, N. and Murajama, T., 1985, “A Trans. of JSME(B), Vol. 51, No. 463, p.12.

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Author information

Correspondence to Chang Sik Lee.

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Lee, C.S. A study on the characteristics of combustion variations of compression ignition engine. KSME Journal 1, 18–23 (1987). https://doi.org/10.1007/BF02953372

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Key Words

  • Diesel Engine Combustion
  • Heat Release Rate
  • Pressure Rise Rate
  • Engine Combustion Variations