12D24-0016 Excavator Turbocharger EC20460945 Diesel Engine Spare Parts

The excavator turbocharger is an air compression unit powered by engine exhaust and mounted on the engine body. Its essential working principle applies exhaust gas thermal energy to pressurize intake air for more complete diesel combustion, which markedly enhances power output, curtails fuel consumption and lowers black smoke emissions.

Core Functions

Power Strengthening EffectEngines with equal cylinder displacement gain a 30%–50% power increase and major torque improvement via turbocharging, delivering strong heavyload and hillclimbing performance.

Fuel Efficiency & Emission Reduction EffectSufficient air intake guarantees full fuel combustion, reducing fuel use by about 5% and cutting black smoke, CO and hydrocarbon release levels.

LowEnd Torque Enhancement EffectImproved lowspeed torque supplies greater strength for excavator heavyload startup and digging tasks.

Basic Structure (Three Primary Component Modules)

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

Compressor Side (Intake Section Module)Driven by the shared central shaft, the compressor wheel compresses air filtered by the air cleaner and delivers boosted air into engine cylinder units.

Center Housing (BearingLubricationCooling Assembly)Designed with floating bearings and engineoil coolinglubrication ducts, it withstands high thermal stress and ultrafast rotation speeds. Engine oil cools bearings to stop sintering failure occurrence.

Working Principle (4Phase Working Cycle)

Exhaust Gas Energy Input PhaseHot highpressure exhaust gas flows into the turbine casing and rotates the turbine wheel at high velocity.

Synchronous Supercharging PhaseThe turbine shaft drives the compressor impeller to rotate at matching highspeed rotation.

Intake Compression PhaseThe compressor draws clean fresh air and compresses it to 0.1–0.2 MPa with air temperature rise.

Intercooling PhaseHot compressed air is cooled by the intercooler to raise air density, then enters cylinders for more fuel injection and higher power generation output.