4038597 Excavator Turbo OEM 6738 - 81 - 8190 Diesel Engine Parts

4038597 Excavator Turbocharger OEM 6738 - 81 - 8190 Diesel Engine Parts

Specifiion

Description

Part Number: 4038597

OE Number: 4955156, 6754-81-8190, 6754818190

Description: Truck, Industrial, Komatsu Grader, Komatsu PC220-8 Excavator

Manufacturer Part Number: 4042667, 4038209, 4044890

CHRA: 4030868

Turbo Model: HX35W-A77J70GM/A70Q86FE14PB-W, HX35W

Engine: QSB, QSB Tier-3, Cummins TIER 3

Displacement: 3.9L, 3900 ccm

Engine Manufacturer: Cummins

Fuel: Diesel

Angle α (compressor housing): 160/185/277°

Angle β (turbine housing): 20/360°

Bearing Housing: 4027882

Turbine Wheel: 3519336 (Ind. 70.0 mm, Exd. 59.9 mm, 12 Blades)(1152301435)

Comp. Wheel: 3599649

Back plate: 3530923 (1154351300)

Heat shield Number: 3519302 (1152301340)

Repair Kit: 3575169 (1153035750)

Gasket Kit: 4032496

Gasket (turbine outlet): 3535001 (3922789)(Inox Steel)

Characteristic

The boost threshold of a turbocharger system is the lower bound of the region within which the compressor operates. Below a certain rate of flow, a compressor produces insignificant boost. This limits boost at a particular rpm, regardless of exhaust gas pressure. Newer turbocharger and engine developments have steadily reduced boost thresholds.

Electrical boosting ("E-boosting") is a new technology under development. It uses an electric motor to bring the turbocharger up to operating speed quicker than possible using available exhaust gases.An alternative to e-boosting is to completely separate the turbine and compressor into a turbine-generator and electric-compressor as in the hybrid turbocharger. This makes compressor speed independent of turbine speed.

Part Number