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Importance of cylinder liner phosphating process

7 month ago
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Engine Part Cylinder Liner 15B


1D Auto Parts Co; Ltd is professional at high quality engine parts, we focus on Piston,Piston Ring,Cylinder Liner,Spark Plug,Glow Plug,Ignition Coil,Engine Valve,Sealant .

We have over 20 years of experience in OEMproduction,lmport-Export, management, qualitycontrol and market orientated R&D.We are able tomeet customer requirement of high quality.sufficiency stock, variety of 5000 models anddifferent size,as well as product packing & branddesign, with the aim of establish a very competitiveadvantage for businesses.

Cylinder liner replacement Cycle: How to determine when an overhaul is needed
 
First, wear limit: data replacement standard
1. Key parameters:
Cylinder diameter ellipticity:
Gasoline engine: ≤0.03mm (more than 0.05mm need boring cylinder);
Diesel engine: ≤0.05mm (more than 0.08mm need boring cylinder).
2. Depth of cylinder wall scratches:
Visible scratches (depth > 0.1mm) must be replaced;
The missing area of honing mesh is > 30%. Cylinder boring is required.
3. Piston ring end clearance:
The end gap of the first air ring is > 0.60mm (standard 0.20-0.40mm).
Typical case:
A Toyota Corolla 1.6L: after driving 180,000 kilometers, the cylinder diameter ellipticity reaches 0.06mm, the power decreases by 15%, and the performance is restored after replacing the four supporting devices.
 
Second, the judgment process of overhaul timing
1. Annual inspection:
Cylinder diameter measurement (usage cylinder gauge) once a year;
Perform oil spectral analysis once every 2 years (detect iron content > 50ppm as an anomaly).
2. Abnormal signal response:
Power drop > 10% immediately detected;
Check if the oil consumption rate is greater than 0.5L/1000km.
3. Recommended tools:
Portable cylinder gauge (such as Mitutoyo MDC-152, Japan);
Engine endoscope (e.g. German Wolf VITOM 3).
 
Summary: The cylinder liner replacement cycle should be combined with the use of strength, detection data and economic comprehensive judgment to avoid excessive maintenance or delay leading to greater losses.
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Main Product: Engine piston, cylinder liner, spark plug , Ignition coils, head gasket, Engine Valve