HE200WG 5329349 Excavator Turbo Replacement For QSB3.9 Diesel Engine

An excavatorenginemounted turbocharger is an air compressor driven by engine exhaust gas. Its core working concept applies exhaust energy to compress intake air, enabling more complete diesel combustion, thus significantly raising power, decreasing fuel burn and lessening black smoke emissions.

Core Functions

Power UpliftTurbocharging boosts power by 30%–50% and torque remarkably on engines of equal displacement, delivering superior performance during heavyload work and climbing.

Fuel Efficiency & Emission CutbackSufficient intake air promotes full fuel combustion, reducing fuel consumption by roughly 5% and cutting black smoke, carbon monoxide and HC pollutants.

LowSpeed Torque OptimizationGreater lowrpm torque provides higher power for excavator heavyload startup and digging activities.

Basic Structure (Three Critical Structural Parts)

Turbine End (Exhaust Side)Joined with the exhaust manifold, it is struck by 600–900 ℃ hot exhaust gas, rotating the central shaft at 100,000–200,000 rpm through the turbine impeller.

Compressor End (Intake Side)Coaxially driven, the compressor wheel compresses air filtered by the air filter and sends pressurized air into engine cylinders.

Central Bearing Housing (Cooling & Lubrication Module)Incorporating floating bearings and engineoil lubricationcooling ducts, it tolerates high temperatures and ultrahigh rotation rates. Engine oil removes heat to avoid bearing seizure damage.

Working Principle (4Phase Working Cycle)

Exhaust Gas Power SupplyHightemperature highpressure exhaust enters the turbine housing and spins the turbine wheel at high speed.

Synchronous Shaft RotationThe turbine shaft turns the compressor impeller in sync at ultrahigh velocity.

Intake Air CompressionThe compressor draws purified filtered air and compresses it to 0.1–0.2 MPa with temperature increase.

Intercooling ProcedureHot compressed air is cooled by the intercooler to boost air density, then enters cylinders for more fuel injection and greater power production.