Indian Journal of Science and Technology

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Experimental Investigations on CI Engine in HCCI and Conventional Diesel Mode


Affiliations
1 Dept. of Mechanical Engg., Lakireddy Bali Reddy College of Engg., Mylavaram, Krishna Dt., AP-521230, India
2 Dept. of Mechanical Engg., JNTU College of Engg., Hyderabad, AP-500085, India
 

An experimental investigation was carried out in diesel engine operated in both homogeneous charge compression ignition (HCCI) and conventional modes. The engine used in this investigation is single cylinder, 4 stroke, water cooled, constant speed, variable compression ratio diesel engine with a displacement of 553 cc. In conventional diesel mode, the fuel was injected 270 bTDC with a nozzle included angle 1400 and the compression ratio 16.5. In HCCI mode, the fuel was injected 800 bTDC during compression stroke by using modified camshaft, with a nozzle 600 included angle. In HCCI mode, to control the phasing and rate of combustion, the effective compression ratio was reduced to 14.5. From the experimental results it is inferred that, HCCI mode of operation results in reduced smoke and NOx emissions significantly with a little increase of HC and CO emissions.

Keywords

Engine, HCCI, Injection Timing, Injection Pressure, Emissions
User

  • Arjan H, Jonas G and Ingemar D (2005) Operation of a DI diesel engine with variable effective compression ratio in HCCI and conventional diesel mode. SAE. 2005-01-0177, 405-418.

  • Duret P, Gatellier B, Luis M, Marjorie M and Peter Z (2004) Progress in diesel HCCI combustion within the European space light project.SAE. 2004-01-1904, 987-999.

  • Hardy WL and Reitz RD (2006) An experimental investigation of partially premixed combustion strategies using multiple injections in a heavy duty diesel engine. SAE. 2006-01-0917, 514- 531.

  • Hasegawa R and Hiromichi Y (2003) HCCI combustion in DI diesel engine. SAE. 2003-01- 0745,1070-1076.

  • Kim DS and Lee CS (2005) Improved emission characteristics of HCCI engine by various premixed fuels and cooled EGR. Elsevier Fuel. 85,695-704.

  • Kong SC, Marriott CD and Reitz RD (2001) Modeling and experiments of HCCI engine combustion using detailed chemical kinetics with multidimensional CFD. SAE. 2001-01-1026,1007-1044.

  • Magnus S and John E (2004) An investigation of the relationship between measured intake temperature and combustion phasing for premixed and DI HCCI engines. SAE. 2004-01-1900, 1271-1286.

  • Nakagome K, Naoki S and Keiichi N (1997) Combustion and emission characteristics of premixed lean diesel combustion engine. SAE. 970898, 1528- 1536.

  • Ralf B, Maximilian B, Andre B, Ansgar S and Jorn K (2004) Adaption of injection system parameters to homogeneous diesel combustion. SAE. 2004-01- 0936, 551-562.

  • Risberg P, Kalghatgi and Erik A H (2005) Auto-ignition quality of diesel like fuels in HCCI engines.SAE. 2005- 01-2127, 883-893.

  • Rudolf HS and Charles ER (1999) Homogeneous charge compression ignition (HCCI): Benefits, compromises and future engine applications. SAE. 1999-01-3682, 2138-2145.

  • Thring RH (1989) Homogeneous charge compression ignition (HCCI) engines. SAE. Paper no. 892068.

  • Timoty JJ, Stanislav VB and Dennis N (2005) Lean and rich premixed compression ignition combustion in a light duty diesel engine. SAE. 2005-01-0166, 382- 391.

  • Yoshinori I, Kenji K, Takeshi S and Yoshinaka T (1999) Trial of new concept diesel combustion system– premixed compression ignited combustion. SAE. 1999-01-0185, 142-151.


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  • Experimental Investigations on CI Engine in HCCI and Conventional Diesel Mode

Abstract Views: 435  |  PDF Views: 112

Authors

K. Appa Rao
Dept. of Mechanical Engg., Lakireddy Bali Reddy College of Engg., Mylavaram, Krishna Dt., AP-521230, India
K. Rajagopal
Dept. of Mechanical Engg., JNTU College of Engg., Hyderabad, AP-500085, India

Abstract


An experimental investigation was carried out in diesel engine operated in both homogeneous charge compression ignition (HCCI) and conventional modes. The engine used in this investigation is single cylinder, 4 stroke, water cooled, constant speed, variable compression ratio diesel engine with a displacement of 553 cc. In conventional diesel mode, the fuel was injected 270 bTDC with a nozzle included angle 1400 and the compression ratio 16.5. In HCCI mode, the fuel was injected 800 bTDC during compression stroke by using modified camshaft, with a nozzle 600 included angle. In HCCI mode, to control the phasing and rate of combustion, the effective compression ratio was reduced to 14.5. From the experimental results it is inferred that, HCCI mode of operation results in reduced smoke and NOx emissions significantly with a little increase of HC and CO emissions.

Keywords


Engine, HCCI, Injection Timing, Injection Pressure, Emissions

References





DOI: https://doi.org/10.17485/ijst%2F2010%2Fv3i12%2F29856