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Definition Of Remanufacturing

DEFINITION OF REMANUFACTURING

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  • Maintenance: Like medical treatment — repair only where broken.
  • Refurbishment: Like makeup — only improve outward appearance (e.g., “cosmetically refreshed vehicles” in some regions).
  • Remanufacturing: Like rebirth or full reconstruction. The whole product is completely disassembled and remanufactured in accordance with specifications for new products.

Remanufacturing vs. Maintenance

Objective

- Remanufacturing: Restore to new-product condition with unified standards.
- Maintenance: Restore operability to resolve specific faults.
- Refurbishment: Improve appearance and basic functions to achieve saleable condition.

Standards

- Remanufacturing: Must meet the quality standards of original new products.
- Maintenance: Conduct strict inspection and warranty to satisfy current operation requirements.
- Refurbishment: Inconsistent and relatively low standards; generally no performance guarantee.

Process

- Remanufacturing: Complete industrial workflow: Disassembly → Cleaning → Inspection → Repair/Replacement → Assembly → Testing.
- Maintenance: Targeted troubleshooting of fault points.
- Refurbishment: Mainly cleaning, polishing and replacement of wearing parts.

Outcome

- Remanufacturing: Equal to new products in performance, service life and warranty.
- Maintenance: Function restored, yet overall service life may be shorter than new products.
- Refurbishment: Improved appearance; uncertain performance and quality.

Property Rights

- Remanufacturing: Product identity (serial number) may be changed; sold as a “remanufactured product” while still based on the original unit.
- Maintenance: Remains the original product.
- Refurbishment: Subject to relevant strict national administrative regulations.

Features of Engine Remanufacturing

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Basic Characteristics of Remanufactured Engines:

 

  1. The performance of remanufactured engines is close to that of new engines, with some indicators exceeding new engines.
  2. All components required for remanufacturing are sourced from industrialized social supply chains.
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Vehicle Matching Principles

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Power Basic Formula

Power = Torque × Angular velocity ω = 2π × Torque × Rotational speed (2π is a constant)

A: Engine Rotational Speed & Vehicle Speed

  1. Formula for vehicle economic speed \(v_{economic}=0.377×n_{economic}\div i_{gearbox\ top\ gear(Direct\ gear)}\div i_{rear\ axle}×r_{tire}\)
  2. Tire parameter description The tire radius only has a step difference of 0.01. Four tire models including 11.00 and 12.00 nylon tires & radial tires are weighted-averaged, then the coefficients in the formula are integrated.
  3. Simplified formula for rear axle ratio \(i_{rear\ axle}=0.202×(Engine\ economic\ speed \div Vehicle\ economic\ speed)\) Note: For non-overdrive gear; multiply by the corresponding first gear ratio if it is overdrive.

B: Maximum Driving Force (Traction Force) of Vehicle

\(P = Max.\ Engine\ Torque × Gearbox\ first\ gear\ ratio × Rear\ axle\ ratio\)

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