TURBOCHARGERS & SUPERCHARGERS CHAPTER 7

FORCED INDUCTION 4 WAYS TO INCREASE COMPRESSION SUPERCHARGING TURBOCHARGING CHEMICAL ENGINE MODIFICATION

TURBOCHARGERS COMPRESSES AIR GOING INTO COMBUSTION CHAMBER DEPENDS ON RAPID EXPANSION OF EXHAUST GASES LEAVING COMBUSTION CHAMBER TURBO LAG IS A CHARACTERISTIC

TURBOCHARGER PARTS TURBINE SHAFT COMPRESSOR WASTEGATE ACTUATOR CENTER HOUSING CONTAINS COOLING SECTION 222C

VANE WHEELS TURN AT 100,000 RPM

TURBO CYCLE EXHAUST GAS FORCES TURBINE TO ROTATE COMPRESSOR FORCES (PACKS) CREATING A DENSE AIR-FUEL MIXTURE CREATES A POSITVE PRESSURE (BOOST)

BOOST PRESSURE CONTROL WASTEGATE DIAPHRAGM CONTROLS BOOST PRESSURE MECHANICAL OR ELECTRONICALLY CONTROLS WASTEGATE OPERATION 224C

TURBOCHARGER COOLING EXHAUST FLOW PAST TURBINE WHEEL CAUSES HIGH TEMPS WATER COOLING OIL COOLING OIL SEALS MUST LET TURBO COOL DOWN ON SHUTOFF

HEAVY DUTY APPLICATION SAME PRINCIPLE AS SMALLER ONES BOOST PRESSURE SLIGHTLY HIGHER COOLING A LOT MORE IMPORTANT DIESEL TRUCK, LOCOMOTIVE, HEAVY EQUIPMENT

POWER OUTPUT COMPARISON

ROTARY RACING ENGINE

MAINTENANCE / PROBLEMS LACK OF OIL DIRTY OIL MECHANICAL DAMAGE OF VANE WHEELS WASTEGATE CONTROL PROBLEMS OIL CAKING

DIAGNOSIS OIL LEAKS, HOSES, LINKAGES BLUE SMOKE EXCESSIVE NOISE PAGE 302 LAB OIL LEAKS, HOSES, LINKAGES BLUE SMOKE EXCESSIVE NOISE EXHAUST LEAKS TEST BOOST PRESSURE TURBO R & R REQUIRES PRE-LUBING

SUPERCHARGERS

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

BLOWN ENGINE MORE RELIABLE THAN A TURBO MUST RECEIVE PROPER LUBRICATION IMPROVED THROTTLE RESPONSE OVER A TURBO