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Compressor Wheel Component – Motor Vehicle Manufacturing

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.

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

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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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.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compressor Wheel