Spanish engineering company Bocanegra Motor has advanced the concept of the internal combustion engine with no connecting rods. Rigidly connected opposed pistons and shuttling “block” that turns crankshaft. The Spanish design overcomes the short-stroke weakness of a comparable, recent Swiss-designed conrod-less engine. A new twist to piston-to-crankshaft connection refines the linear action of the new Spanish design – and rotary valves instead of the usual poppets is another ...

Premium Content (PAID Subscription Required)

"Prototype Engine: No Connecting Rods, Rotary Valves" is part of the paid WardsAuto Premium content. You must log in with Premium credentials in order to access this article. Premium paid subscribers also gain access to:

  All of WardsAuto's reliable, in-depth industry reporting and analysis
  Hundreds of downloadable data tables including:
  •   Global sales and production data by country
  •   U.S. model-line inventory data
  •   Engine and equipment installation rates
  •   WardsAuto's North America Plant by Platform forecast
  •   Product Cycle chart
  •   Interrelationships among major OEMs
  •   Medium- and heavy-duty truck volumes
   •  Historical data and much more!

For pricing and subscription information please contact
Lisa Williamson by email: or phone: (248) 799-2642

Current subscribers, please login or CLICK for support information.

Already registered? here.