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INTERNAL COMBUSTION ENGINES-II Supercharging & Turbocharging 
University of Petroleum & Energy Studies Dehradun
I C ENGINES - II Supercharging & Turbocharging 
Introduction 
ȐPurpose : higher power , lower emissions 
•Power output of ...
I C ENGINES - II Supercharging & Turbocharging 
Introduction 
•Brake Horse Power of Engine : 
bhp = [ pbm x Vs x n x K ] /...
I C ENGINES - II Supercharging & Turbocharging 
Increase in bmep of a given engine capacity 
•Supplying air or air- fuel ...
I C ENGINES - II Supercharging & Turbocharging 
ȐSupercharging 
- increase power w/o increase in sfc 
- some power consume...
I C ENGINES - II Supercharging & Turbocharging 
Types of Superchargers 
Supercharger is a pressure - boosting device 
A ...
I C ENGINES - II Supercharging & Turbocharging 
Centrifugal Type of Supercharger 
•Supplying air or air- fuel mixture
I C ENGINES - II Supercharging & Turbocharging 
Root’s Type of Supercharger 
•Supplying air or air- fuel mixture
I C ENGINES - II Supercharging & Turbocharging 
Vane Type of Supercharger 
•Supplying air or air- fuel mixture
I C ENGINES - II Supercharging & Turbocharging 
Comparison between the three Superchargers 
- The required characteristic...
I C ENGINES - II Supercharging & Turbocharging 
Methods of Supercharging 
- Independently driven compressor or blower 
- ...
I C ENGINES - II Supercharging & Turbocharging 
Effects of Supercharging 
- Higher induction of charge & out put 
- Bette...
I C ENGINES - II Supercharging & Turbocharging 
Effects of Supercharging 
- Reduced exhaust smoke 
- Reduced specific fue...
I C ENGINES - II Supercharging & Turbocharging 
ȐTurbocharging 
- The supercharger driven by gas turbine uses 
energy in t...
I C ENGINES - II Supercharging & Turbocharging 
 Principle of Exhaust Turbocharging of a 
Single- Cylinder Engine
I C ENGINES - II Supercharging & Turbocharging 
•Charge Cooling 
- Air charge when compressed becomes hot and leaves compr...
INTERNAL COMBUSTION ENGINES-II 
Course Outlines ADEG-222 LTP-3 1 1 
I: BASIC THEORY 
II: FUEL INJECTION SYSTEM 
III: AIR M...
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Superchargers and Turbochargers

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Working and Types of Superchargers and Turbochargers

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  • DOWNLOAD FULL BOOKS, INTO AVAILABLE FORMAT ......................................................................................................................... ......................................................................................................................... 1.DOWNLOAD FULL. PDF EBOOK here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. EPUB Ebook here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. doc Ebook here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. PDF EBOOK here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. EPUB Ebook here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... 1.DOWNLOAD FULL. doc Ebook here { https://tinyurl.com/y8nn3gmc } ......................................................................................................................... ......................................................................................................................... ......................................................................................................................... .............. Browse by Genre Available eBooks ......................................................................................................................... Art, Biography, Business, Chick Lit, Children's, Christian, Classics, Comics, Contemporary, Cookbooks, Crime, Ebooks, Fantasy, Fiction, Graphic Novels, Historical Fiction, History, Horror, Humor And Comedy, Manga, Memoir, Music, Mystery, Non Fiction, Paranormal, Philosophy, Poetry, Psychology, Religion, Romance, Science, Science Fiction, Self Help, Suspense, Spirituality, Sports, Thriller, Travel, Young Adult,
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Superchargers and Turbochargers

  1. 1. INTERNAL COMBUSTION ENGINES-II Supercharging & Turbocharging University of Petroleum & Energy Studies Dehradun
  2. 2. I C ENGINES - II Supercharging & Turbocharging Introduction ȐPurpose : higher power , lower emissions •Power output of naturally aspirated engine depend : - Amount of Air - Air utilization - Engine speed - Amount of fuel admitted - Combustion characteristics - Engine thermal efficiency
  3. 3. I C ENGINES - II Supercharging & Turbocharging Introduction •Brake Horse Power of Engine : bhp = [ pbm x Vs x n x K ] / 60000 where; pbm : brake mean effective pressure, N / m2 Vs : swept vol. of engine, m3 n : no. of power strokes or cycles K : no. of cylinders Power out put can be increased by means of increasing mean effective pressure
  4. 4. I C ENGINES - II Supercharging & Turbocharging Increase in bmep of a given engine capacity •Supplying air or air- fuel mixture at higher than ambient pressure - this will increase density - thereby mass of charge; air or air- fuel mixture - resulting in increase in power out put The method of supplying air or air- fuel mixture at a pressure higher than the pressure at which the engine naturally aspirate,by means of device is called supercharging
  5. 5. I C ENGINES - II Supercharging & Turbocharging ȐSupercharging - increase power w/o increase in sfc - some power consumed but net power increases - engine to withstand higher forces of supercharging - higher pressure & temperature may result in knocking and require better anti - knock fuel - applications; marine, automotive, genset, racing cars, engines working at high altitudes, etc.
  6. 6. I C ENGINES - II Supercharging & Turbocharging Types of Superchargers Supercharger is a pressure - boosting device A centrifugal, axial or displacement type compressor is normally used Superchargers driven by engine crankshaft are called mechanically driven superchargers Superchargers driven by a gas turbine using exhaust gases are called Turbochargers There are three types of superchargers; - Centrifugal type - Roots type - Vane type
  7. 7. I C ENGINES - II Supercharging & Turbocharging Centrifugal Type of Supercharger •Supplying air or air- fuel mixture
  8. 8. I C ENGINES - II Supercharging & Turbocharging Root’s Type of Supercharger •Supplying air or air- fuel mixture
  9. 9. I C ENGINES - II Supercharging & Turbocharging Vane Type of Supercharger •Supplying air or air- fuel mixture
  10. 10. I C ENGINES - II Supercharging & Turbocharging Comparison between the three Superchargers - The required characteristics of centrifugal type has limitations & are suitable for only low speeds - The root’s type is simple in construction, minimum maintenance and longer life - The vane type has problem of wear of the tips of vanes over a period of time - Depending upon the application, the type of supercharger should be decided
  11. 11. I C ENGINES - II Supercharging & Turbocharging Methods of Supercharging - Independently driven compressor or blower - Ram effect - Under piston compression - Engine driven compressor or blower
  12. 12. I C ENGINES - II Supercharging & Turbocharging Effects of Supercharging - Higher induction of charge & out put - Better atomization of fuel and its mixing with air - Better scavenging of combustion products - Better torque characteristics over speed range - Quicker acceleration of vehicle - More smoother & complete combustion with reduction in knock tendency - Usage of poor ignition quality fuel - improved cold starting
  13. 13. I C ENGINES - II Supercharging & Turbocharging Effects of Supercharging - Reduced exhaust smoke - Reduced specific fuel consumption in turbocharging - Increased mechanical efficiency - Increased thermal stresses, heat losses, gas loading, valve overlap - Increased cooling requirements of pistons and valves
  14. 14. I C ENGINES - II Supercharging & Turbocharging ȐTurbocharging - The supercharger driven by gas turbine uses energy in the exhaust gases - No mechanical linkage between the engine and the supercharger - The major parts of a turbocharger ; turbine wheel, turbine housing, turbo shaft, compressor wheel, compressor housing, bearing housing.
  15. 15. I C ENGINES - II Supercharging & Turbocharging  Principle of Exhaust Turbocharging of a Single- Cylinder Engine
  16. 16. I C ENGINES - II Supercharging & Turbocharging •Charge Cooling - Air charge when compressed becomes hot and leaves compressor at much higher temperature (60 to 90 C) than ambient air temperature - When air gets heated it expands and density reduces therefore mass of air entering cylinder becomes lesser. This reduces oxygen for combustion. Hot air also increases operating temp. - Charge is cooled by intercooling, and/or after cooling to overcome complexity of hot air
  17. 17. INTERNAL COMBUSTION ENGINES-II Course Outlines ADEG-222 LTP-3 1 1 I: BASIC THEORY II: FUEL INJECTION SYSTEM III: AIR MOTION, COBUSTION & COMBUSTION CHAMBERS IV: SUPERCHARGING and TUBOCHARGING V: DIESEL ENGINE TESTING & PERFORMAMCE

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