Advertisement

A New Design to Achieve Variable Compression Ratio in a Spark Ignition Engine

  • Aditya RoyEmail author
  • Chetan Mishra
  • Sarthak Jain
  • Naveen Solanki
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)

Abstract

Spark ignition engines are known to have low part load efficiencies which contribute in increasing fuel consumptions. Compression ratio plays a significant role in deciding the performance of an engine at different load conditions. For this reason, the variable compression ratio (VCR) engine has, since long, been considered as an effective solution to the problems encountered while operating an engine at varying load conditions. There has been a significant amount of effort by researchers as well as OEMs for developing efficient and optimum designs of the VCR engine. The design makes use of a cylinder head which is equipped with a movable ram for varying the clearance volume. Actuators have been used to actuate the movement of the ram which facilitates to vary the compression ratio. The whole system has been designed keeping the potential challenges in mind and means have been sought to negate them. VCR engines give more flexibility to the user and at the same time, improve performance characteristics such as brake power, brake thermal efficiency, and torque while decreasing emissions and lowering specific fuel consumption.

Keywords

Variable compression ratio SI engine Engine head Actuator Solidworks 

References

  1. 1.
    Rao, G.V.N.S.R., Raju, R., Rao, M.M.: Optimizing the compression ratio of diesel fueled CI engine. ARPN J. Eng. Appl. Sci. 3(2), (2008)Google Scholar
  2. 2.
    Tsuchida, H., Hiraya, K., Tanaka, D., Shigemoto, S., Aoyama, S., Tomita, M., Sugiyama, T., Hiyoshi, R.: The effect of a longer stroke on improving fuel economy of a multiple-link VCR engine. SAE Tech. Pap. (2007)Google Scholar
  3. 3.
    Kadota, M., Ishikawa, S., Yamamoto, K., Kato, M., Kawajiri, S.: Advanced control system of variable compression ratio (VCR) engine with dual piston mechanism. SAE Int. J. Engines 2(1), (2009)CrossRefGoogle Scholar
  4. 4.
    Rabhi, V., Beroff, J., Dionnet, F.: Study of a gear-based variable compression ratio engine. SAE Tech. Pap. (2004)Google Scholar
  5. 5.
    Kommana, S., Banoth, B.N., Kadavakollu, K.R.: Performance and emission of VCR-CI engine with palm kernel and eucalyptus blends. Perspect. Sci. 8, 195–197 (2016)CrossRefGoogle Scholar
  6. 6.
    Channapattana, S.V., Kantharaj, C., Shinde, V.S., Pawar, A.A., Kamble, P.G.: Emissions and performance evaluation of DI CI—VCR engine fuelled with honne oil methyl ester/diesel blends. In: Energy Procedia, The International Conference on Technologies and Materials for Renewable Energy, Environment and Sustainability, vol. 74, pp. 281–288, Elsevier (2005)Google Scholar
  7. 7.
    Komatsu, T., Nagashima, S., Tsukada, H.: An automatic adjustment system for VCR magnetic heads on cylinder units. CIRP Ann. Manufact. Technol. 38(1), 9–12 (1989)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Aditya Roy
    • 1
    Email author
  • Chetan Mishra
    • 1
  • Sarthak Jain
    • 1
  • Naveen Solanki
    • 1
  1. 1.Department of Mechanical and Automation EngineeringMaharaja Agrasen Institute of TechnologyDelhiIndia

Personalised recommendations