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Introducing the latest two-cycle design innovation from Maruyama Manufacturing Co.

Introducing the latest two-cycle design innovation from Maruyama Manufacturing Co. H igh E fficiency R ecirculator E ngine. The Future is H.E.R.E. . General Specifications. Three engine displacements Standard Walbro Rotary Valve Carburetor

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Introducing the latest two-cycle design innovation from Maruyama Manufacturing Co.

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  1. Introducing the latest two-cycle design innovation from Maruyama Manufacturing Co. High Efficiency Recirculator Engine

  2. The Future isH.E.R.E.  Photo's of prototype engine

  3. General Specifications • Three engine displacements • Standard Walbro Rotary Valve Carburetor • Variable ignition timing through CDI Ignition System • Enclosed, high efficiency transfer ports Data based on prototype engine test results

  4. Emission Reduction, Fuel Economy and Performance BenefitsAs Compared to Existing Tier 1 Two-cycle Engine

  5. Emission Reduction Percentage Parts Per Million • CO 53% Down • THC 50% Down • NOx 16% Up (value remains under Tier II regulations) Data based on prototype engine test results

  6. NOx Reduction Grams per Horsepower Hour Data based on prototype engine test results

  7. CO Reduction Grams per Horsepower Hour Data based on prototype engine test results

  8. THC ReductionGrams per Horsepower Hour Data based on prototype engine test results

  9. Fuel EconomyandHorsepower • Fuel consumption 40% Down • Horsepower 23% Up Data based on prototype engine test results

  10. Operational Cycles of a Conventional Two-Cycle • Intake • Transfer • Compression • Ignition • Exhaust Data based on prototype engine test results

  11. Operational Cycles of a Recirculator Two-Cycle • Intake • Recirculator Event • Transfer • Compression • Ignition • Exhaust Data based on prototype engine test results

  12. Intake • Fuel/ air mixture is drawn into crankcase as the piston travels upwards in the cylinder Data based on prototype engine test results

  13. Recirculator Event • Recirculator Port opens at Top Dead Center • Pressurized Exhaust gasses are introduced to incoming fuel/ air charge at the transfer port Data based on prototype engine test results

  14. Transfer • Small amount of exhaust gas creates a barrier between intake and exhaust charges • Incoming fuel/ air mixture is drawn into the combustion chamber as the piston travels down Data based on prototype engine test results

  15. Compression • Fuel mixture is compressed Data based on prototype engine test results

  16. Ignition • Fuel mixture is ignited and power stroke begins Data based on prototype engine test results

  17. Exhaust • Burned fuel mixture exits combustion chamber through exhaust port Data based on prototype engine test results

  18. Key Benefits of the Recirculator Two-Cycle • Retains proven and durable engine design • No additional expensive or complicated components • Maintains benefits of conventional two-cycle engine • Reduces harmful emissions in excess of 50% when compared to conventional two-cycle Data based on prototype engine test results

  19. Thank You!

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