turbochargers & superchargers chapter 7. forced induction 4 ways to increase compression...

Download TURBOCHARGERS & SUPERCHARGERS CHAPTER 7. FORCED INDUCTION 4 WAYS TO INCREASE COMPRESSION –SUPERCHARGING –TURBOCHARGING –CHEMICAL –ENGINE MODIFICATION

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  • Slide 1
  • TURBOCHARGERS & SUPERCHARGERS CHAPTER 7
  • Slide 2
  • FORCED INDUCTION 4 WAYS TO INCREASE COMPRESSION SUPERCHARGING TURBOCHARGING CHEMICAL ENGINE MODIFICATION
  • Slide 3
  • TURBOCHARGERS COMPRESSES AIR GOING INTO COMBUSTION CHAMBER DEPENDS ON RAPID EXPANSION OF EXHAUST GASES LEAVING COMBUSTION CHAMBER TURBO LAG IS A CHARACTERISTIC
  • Slide 4
  • TURBOCHARGER PARTS TURBINE SHAFT COMPRESSOR WASTEGATE ACTUATOR CENTER HOUSING CONTAINS COOLING SECTION 222C
  • Slide 5
  • VANE WHEELS TURN AT 100,000 RPM
  • Slide 6
  • TURBO CYCLE EXHAUST GAS FORCES TURBINE TO ROTATE COMPRESSOR FORCES (PACKS) CREATING A DENSE AIR-FUEL MIXTURE CREATES A POSITVE PRESSURE (BOOST) 223C
  • Slide 7
  • BOOST PRESSURE CONTROL WASTEGATE DIAPHRAGM CONTROLS BOOST PRESSURE MECHANICAL OR ELECTRONICALLY CONTROLS WASTEGATE OPERATION 224C
  • Slide 8
  • TURBOCHARGER COOLING EXHAUST FLOW PAST TURBINE WHEEL CAUSES HIGH TEMPS WATER COOLING OIL COOLING OIL SEALS MUST LET TURBO COOL DOWN ON SHUTOFF
  • Slide 9
  • HEAVY DUTY APPLICATION SAME PRINCIPLE AS SMALLER ONES BOOST PRESSURE SLIGHTLY HIGHER COOLING A LOT MORE IMPORTANT DIESEL TRUCK, LOCOMOTIVE, HEAVY EQUIPMENT
  • Slide 10
  • POWER OUTPUT COMPARISON
  • Slide 11
  • ROTARY RACING ENGINE
  • Slide 12
  • MAINTENANCE / PROBLEMS LACK OF OIL DIRTY OIL MECHANICAL DAMAGE OF VANE WHEELS WASTEGATE CONTROL PROBLEMS OIL CAKING
  • Slide 13
  • DIAGNOSIS OIL LEAKS, HOSES, LINKAGES BLUE SMOKE EXCESSIVE NOISE EXHAUST LEAKS TEST BOOST PRESSURE TURBO R & R REQUIRES PRE-LUBING PAGE 302 LAB
  • Slide 14
  • SUPERCHARGERS
  • Slide 15
  • SUPERCHARGER OPERATION BELT OR GEAR DRIVEN ROTORS ACT LIKE A PUMP AND COMPRESS AIR (PAGE 310 LAB) SUPERCHARGER SPEED IS LIMITED BY ENGINE SPEED -TURNS A LOT SLOWER SOMETIMES USED WITH INTERCOOLER TO COOL AIR BYPASS BUTTERFLY VALVE 230 LAB
  • Slide 16
  • BLOWN ENGINE MORE RELIABLE THAN A TURBO MUST RECEIVE PROPER LUBRICATION IMPROVED THROTTLE RESPONSE OVER A TURBO
  • Slide 17