INDUSTRY COMPONENT

Compressor Wheel

A compressor wheel is a rotating component in a turbocharger that compresses intake air to increase engine power and efficiency.

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Component Specifications

Definition
The compressor wheel is a precision-engineered centrifugal impeller that forms the core of a turbocharger's compressor stage. Mounted on a common shaft with the turbine wheel, it rotates at high speeds (typically 100,000-300,000 RPM) to draw in ambient air and accelerate it radially outward through centrifugal force. This kinetic energy is converted to pressure energy in the compressor housing's diffuser section, resulting in compressed air that is delivered to the engine's intake manifold. The aerodynamic design of its blades determines compression efficiency, flow capacity, and surge characteristics.
Working Principle
Operates on centrifugal compression principles. As the wheel rotates, air enters axially through the inducer section, is accelerated radially by curved blades, and exits at high velocity into the diffuser. The diffuser converts kinetic energy to static pressure, increasing air density before it enters the engine. Rotation is driven by exhaust gases spinning the turbine wheel connected via a common shaft.
Materials
Typically aluminum alloys (e.g., 2618, 4032) for gasoline applications due to lightweight and good strength at moderate temperatures. For diesel/high-performance applications, titanium alloys (e.g., Ti-6Al-4V) or advanced composites may be used for higher temperature resistance and strength. Surface treatments like anodizing or coatings (e.g., ceramic) can enhance durability.
Technical Parameters
  • Trim 40-100
  • Max RPM Up to 300,000
  • Diameter 40-150 mm
  • A/R Ratio 0.4-1.2
  • Flow Rate 10-150 lb/min
  • Blade Count 6-12 blades
  • Pressure Ratio 1.5-4.5:1
  • Exducer Diameter 35-140 mm
  • Inducer Diameter 30-120 mm
Standards
ISO 9001, ISO/TS 16949, DIN 1940, SAE J922

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Compressor Wheel.

compressor wheel turbocharger impeller centrifugal compressor turbo components automotive turbo performance turbo compressor specs turbo materials Compressor Wheel in Motor Vehicle Manufacturing

Parent Products

This component is used in the following industrial products

Turbocharger

A forced induction device that increases an engine's efficiency and power output by forcing extra compressed air into the combustion chamber.

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Center Housing Rotating Assembly (CHRA)

The core rotating assembly of a turbocharger that houses the turbine and compressor wheels on a common shaft within the center housing.

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Engineering Analysis

Risks & Mitigation
  • Foreign object damage (FOD)
  • Overspeed leading to burst
  • Fatigue failure from cyclic loading
  • Surge/stall conditions
  • Corrosion or erosion
FMEA Triads
Trigger: Ingestion of debris through intake
Failure: Blade damage, imbalance, reduced efficiency
Mitigation: Install air filters, regular inspection, use protective screens
Trigger: Excessive exhaust energy
Failure: Overspeed, material yielding, catastrophic rupture
Mitigation: Implement wastegates, boost controllers, speed sensors
Trigger: High-cycle fatigue from rotational stresses
Failure: Crack initiation at blade roots, eventual fracture
Mitigation: Design with fatigue-resistant materials, stress relief features, regular NDT
Trigger: Oil starvation in bearings
Failure: Shaft seizure, wheel contact with housing
Mitigation: Ensure proper lubrication systems, oil quality monitoring

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Balance tolerance: G2.5 per ISO 1940-1; dimensional tolerances: ±0.05 mm on critical features
Test Method
Dynamic balancing testing, flow bench testing, overspeed spin testing, material hardness and microstructure analysis

Buyer Feedback

★★★★☆ 4.7 / 5.0 (14 reviews)

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"The technical documentation for this Compressor Wheel is very thorough, especially regarding technical reliability."

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Frequently Asked Questions

What is the purpose of a compressor wheel in a turbocharger?

It compresses intake air to increase its density, allowing more oxygen into the engine for improved combustion, power output, and efficiency.

How does compressor wheel trim affect performance?

Trim (ratio of inducer to exducer diameters squared) influences flow characteristics: lower trim favors high pressure ratios, higher trim favors high flow rates.

Can compressor wheels be interchanged between turbochargers?

Only within compatible families sharing housing designs and shaft specifications; mismatches can cause imbalance, surge, or reduced efficiency.

What causes compressor wheel damage?

Foreign object ingestion (FOD), overspeed, excessive heat, material fatigue, or improper handling during maintenance.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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