KTR-110 6505-67-5030 Excavator Turbocharger S6D170 PC750-6 Diesel Engine Turbocharger

The turbocharger of an excavator is an air compression unit driven by engine exhaust and mounted on the engine casing. Its core working principle is utilizing exhaust gas thermal energy to compress intake air for more thorough diesel combustion, which significantly boosts power output, curtails fuel burn rates and reduces black smoke emission volumes.

Core Functions

Power Improvement PerformanceEngines with identical displacement achieve a 30%–50% power increase and major torque improvement through turbocharging, providing powerful heavyload working and hillclimbing capability.

Fuel Conservation & Emission Reduction PerformanceAdequate air intake ensures full fuel combustion, reducing fuel consumption by roughly 5% and lowering black smoke, CO and hydrocarbon discharge concentrations.

LowSpeed Torque Upgrade PerformanceEnhanced lowrpm torque offers greater working strength for excavator heavyload startup and digging operational processes.

Basic Structure (Three Critical Component Modules)

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

Compressor Section (Intake Side Component Module)Coaxially driven by the turbine shaft, the compressor wheel compresses air purified by the air filter unit and sends boostedpressure air into engine cylinder components.

Center Bearing Housing Assembly (LubricationCooling Component Module)Featuring floating bearings and engineoil lubricationcooling flow ducts, it endures high thermal loads and ultrafast rotational speeds. Engine oil removes heat energy to avoid bearing seizure damage failures.

Working Principle (4Step Functional Operation Cycle)

Exhaust Gas ImpulseDriven Rotation StepHighheat highpressure exhaust gas flows into the turbine casing housing and rotates the turbine impeller wheel rapidly at high velocity.

Coaxial Synchronous Supercharging StepThe turbine shaft drives the compressor impeller wheel to spin synchronously at matching high rotational velocity levels.

Intake Air Compression Pressurization StepThe compressor draws in filtered fresh ambient air and compresses it to 0.1–0.2 MPa while raising air temperature values.

Intercooler Heat Reduction StepHot compressed air is cooled by the intercooler device to increase air density, then enters engine cylinders for increased fuel injection and higher power output efficiency levels.