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Two-stroke/four-stroke multicylinder gasoline engine for downsizing applications


Following the great public interest aroused by the „2/4-sight“ concept and the successful completion of the fundamental investigations on the testbed, Ricardo is now starting work on the „2/4-car“ project. This project aims to prove the combinability of two- and four-stroke operation in a single internal combustion engine within a demonstrator vehicle. The additional degree of freedom of the engine operating mode opens the potential for down sizing beyond conventional technical limits, enabling a competitive CO2/cost trade-off compared to future diesel powertrains.

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Correspondence to Martin Rebhan.

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Rebhan, M., Stokes, J. Two-stroke/four-stroke multicylinder gasoline engine for downsizing applications. MTZ Worldw 70, 40–45 (2009).

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  • Torque
  • Engine Speed
  • Valve Timing
  • Experimental Engine
  • Poppet Valve