6222-81-8180 6D108 Diesel Turbos Wa320-3 Wa350-3 Excavator Turbo

Mounted on the excavator engine, the turbocharger is an exhaustdriven air compression device. Its core mechanism harnesses exhaust gas energy to pressurize intake air, promoting more thorough diesel combustion, which substantially enhances power, reduces fuel burn and lessens black smoke release.

Core Functions

Power ImprovementOn samedisplacement engines, turbocharging delivers a 30%–50% power rise and significant torque gain, offering stronger capability for heavyload work and uphill travel.

FuelSaving & Emission ReductionSufficient air intake ensures complete fuel combustion, lowering fuel consumption by approximately 5% while cutting black smoke, CO and HC pollutants.

LowSpeed Torque EnhancementIncreased lowend torque supplies greater force for heavyload startup and digging tasks of excavators.

Basic Structure (Three Main Parts)

Turbine Side (Exhaust Section)Connected to the exhaust manifold, it is impacted by 600–900 ℃ highheat exhaust gas, rotating the main shaft at 100,000–200,000 revolutions per minute via the turbine impeller.

Compressor Side (Intake Section)Driven coaxially, the compressor wheel compresses air filtered by the air filter and sends pressurized air into engine cylinders.

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

Working Principle (4Step Process)

Exhaust Gas ActuationHightemperature, highpressure exhaust flows into the turbine casing and spins the turbine wheel rapidly.

Synchronous Coaxial RotationThe turbine shaft drives the compressor impeller to rotate at matching high speeds.

Air CompressionThe compressor inhales filtered ambient air and compresses it to 0.1–0.2 MPa, raising air temperature simultaneously.

Intercooler Heat ReductionHeated compressed air passes through the intercooler to increase density, then enters cylinders for increased fuel injection and greater power production.