TURBOCHARGER SYSTEM - Description TC-3
Operation of Turbocharger
Exhaust gas acts on the turbine wheel inside the
turbine housing, causing it to revolve. When the
turbine wheel revolves, the impeller wheel which
is located on the same shaft also revolves, com-
pressing the intake air which has passed through
the air cleaner. When expelled from the compres-
sor housing the compressed air is supplied to the
cylinders. When the engine speed increases, the
exhaust gas volume increases and the turbine wheel
revolutions increasa (approx. 20,000 — 11 5,000
rpm), thus the turbocharged air pressure grows
greater and engine output increases.
Waste Gate Valve
If the turbocharged air pressure exceeds the
prescribed air pressure, the flow of exhaust gas
by-passes the turbine, controlling turbine wheel
revolutions and turbocharged air pressure. This
by-pass valve which controls the quantity of ex-
haust gas flowing to the turbine is called the waste
gate valve. When the charged air pressure exceeds
the prescribed pressure, the actuator operates, the
waste gate valve opens and part of the exhaust gas
by-passes the turbine. This causes a drop in the
turbine revolution rate and controls the charged air
pressure within the prescribed limits.
Summary of Contents for 1HD-T
Page 1: ......
Page 53: ...EM 42 ENGINE MECHANICAL Timing Gears TIMING GEARS COMPONENTS ...
Page 65: ...EM 54 ENGINE MECHANICAL Cylinder Head CYLINDER HEAD COMPONENTS ...
Page 95: ...EM 84 ENGINE MECHANICAL Cylinder Block CYLINDER BLOCK COMPONENTS ...
Page 133: ...TURBOCHARGER SYSTEM Turbocharger TC 9 COMPONENTS ...
Page 145: ...FU 6 FUEL SYSTEM Fuel Heater System FUEL HEATER SYSTEM SYSTEM CIRCUIT ...
Page 166: ...FUEL SYSTEM Injection Pump FU 27 INJECTION PUMP REMOVAL OF INJECTION PUMP ...
Page 169: ...FU 30 FUEL SYSTEM Injection Pump COMPONENTS ...
Page 170: ...FUEL SYSTEM Injection Pump FU 31 COMPONENTS Cont d ...
Page 171: ...FU 32 FUEL SYSTEM Injection Pump COMPONENTS Cont d ...
Page 251: ...LU 4 LUBRICATION SYSTEM Troubleshooting TROUBLESHOOTING ...
Page 255: ...LU 8 LUBRICATION SYSTEM Oil Pump OIL PUMP COMPONENT ...
Page 272: ...ST 4 STARTING SYSTEM Pre Heating System Super Glow Type TIMER CHARACTERISTIC DIAGRAM Cont d ...
Page 282: ...ST 14 STARTING SYSTEM Starting System Circuit STARTING SYSTEM CIRCUIT Cont d ...
Page 340: ...B 1 STANDARD BOLT TORQUE SPECIFICATIONS Page STANDARD BOLT TORQUE SPECIFICATIONS B 2 ...
Page 343: ...C 1 SSTAND SSM Page SST SPECIAL SERVICE TOOLS C 2 SSM SPECIAL SERVICE MATERIALS C 6 ...