RHF55 8980302170 Travel Motor Gearbox Turbocharger SH240 CX210B Engine Turbocharger

Mounted to the excavator engine, the turbocharger functions as an exhaustactuated air compressor. It uses exhaust gas thermal energy to compress intake air for enhanced diesel combustion efficiency, greatly increasing power output, cutting fuel waste and reducing black smoke discharge.

Core Functions

Power ImprovementIdenticaldisplacement engines achieve a 30%–50% power rise and major torque gain via turbocharging, supporting robust heavyload and hillclimbing performance.

Fuel Conservation & Emission MitigationAdequate air intake ensures full combustion, lowering fuel consumption by about 5% and decreasing black smoke, CO and hydrocarbon emissions.

LowRPM Torque StrengtheningEnhanced lowspeed torque offers greater force for excavator heavyload startup and digging tasks.

Basic Structure (Three Fundamental Components)

Turbine Section (Exhaust Side)Connected to the exhaust manifold, hightemperature exhaust gas at 600–900 ℃ impacts the turbine impeller, spinning the main shaft at 100,000–200,000 rpm.

Compressor Section (Intake Side)Driven by the common shaft, the compressor wheel compresses air cleaned by the air cleaner and feeds pressurized air into engine cylinders.

Center Housing (BearingLubrication Assembly)Featuring floating bearings and engineoil coolinglubrication passages, it endures extreme heat and ultrafast rotation. Engine oil dissipates heat to prevent bearing sintering.

Working Principle (4Stage Operation Cycle)

Exhaust Gas Impulse DriveHighheat highpressure exhaust flows into the turbine casing and rotates the turbine wheel at high velocity.

Coaxial Supercharging SynchronizationThe turbine shaft drives the compressor impeller to spin at the same high rotational speed.

Air Pressurization StepThe compressor sucks filtered fresh air and compresses it to 0.1–0.2 MPa with rising temperature.

Intercooler Temperature ReductionHot compressed air is cooled by the intercooler to increase density, then enters cylinders for increased fuel injection and higher power output.