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Department of Mechanical Engineering

Department of Mechanical Engineering. A Seminar Presentation On. SIX STROKE DIESEL ENGINE. CONTENTS. Introduction Types of Six stroke engines Bajulaz Six stroke Diesel engine Dual fuel Six stroke engine Comparison Specifications Features Performance and economy Conclusion.

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Department of Mechanical Engineering

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  1. Department of Mechanical Engineering A Seminar Presentation On SIX STROKE DIESEL ENGINE

  2. CONTENTS • Introduction • Types of Six stroke engines • Bajulaz Six stroke Diesel engine • Dual fuel Six stroke engine • Comparison • Specifications • Features • Performance and economy • Conclusion

  3. INTRODUCTION • The six-stroke engine is a type of internal combustion engine based on the four-stroke engine. • First developed in early 1990’s • Advancement is the Duel fuel six stroke diesel engine • More efficient & reduce emissions.

  4. Approaches for six stroke engine design • First approach There is two additional strokes by the main piston as fifth and sixth stroke • Second approach It uses a second opposed piston which moves at half the cyclical rate of the main piston

  5. TYPES:

  6. BAJULAZ SIX STROKE ENGINE Intake valve Heating chamber valve Combustion chamber valve Exhaust valve Cylinder Combustion chamber Air heating chamber Wall of combustion chamber Fuel injector Heater plug • Intake of pure air in the • cylinder STROKE 1

  7. STROKE 2 STROKE 3 • Compression of pure air in • heating chamber • Release of combustion • gases in the cylinder

  8. STROKE 4 STROKE 5 • Recompression of pure air • in the combustion chamber • Release of pure air • into cylinder

  9. STROKE 6 • Exhaust of combustion gases

  10. DUAL FUEL SIX STROKE ENGINE • This engine runs by two fuels i.e. diesel (primary fuel) and methanol (secondary fuel)

  11. PV DIAGRAMS

  12. SPECIFICATIONS

  13. COMPARISONS Comparison between four stroke & six stroke diesel engines

  14. Comparison between six stroke diesel & dual fuel six strokeengines

  15. Lower maintenance costs due to less wearing parts (cylinder head) • Longer service intervals possible due to lower operating temperatures recorded • Increase in thermal efficiency by more than 20% • Reduced fuel consumption

  16. IMPROVEMENTS IN EXHAUST

  17. ADVANTAGES • Reduction in fuel consumption by at least 40% • Two expansions(work/Power stroke) in six strokes • Dramatic reduction in pollution ( up to 65%) • Higher overall efficiency • Lower engine temperature & noise level • Due to more air intake, the cooling system is improved • Better scavenging and more extraction of work per cycle • Less inertia due to lightness of moving parts

  18. DISADVANTAGES • Brake power & indicated power per cycle per cylinder is comparatively lesser • Engine size increases due to many number of cylinders & additional components • Higher manufacturing cost of six stroke engine

  19. APPLICATIONS • Automobiles, heavy goods, construction-site and farm vehicles.  • motor-pumps, generator sets, stationary engines, etc....intended for agriculture and industry. • Motorboats

  20. CONCLUSION • Drastically reducing fuel consumption (by 40%) and pollution (by 60-90%) without radically affecting performances • For the dual fuel six-stroke engine, soot & nitrous oxide was practically eliminated by a small amount of methanol in the second combustion process. • It enables lower engine temperature and therefore increases in the overall efficiency.

  21. THANK YOU

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