JB/T 5089.1-2020Internal combustion engines - Paper element oil filters - Part 1: Assemblies - Technical requirements (English PDF)

4.1 Original resistance

At rated volume flow, the original resistance of the assembly shall not be greater than 25 kPa OR the original resistance value as agreed upon by the supplier and purchaser.

The rated volume flow rate is calculated according to formula (l).

Where: Q - Rated volume flow, in liters per minute (L/min);

A - Flow rate coefficient, which takes 0.009, in liter per square centimeter [L (/min·cm2)];

F - The effective filtration area of the filter element, in square centimeters (cm2).

4.2 Original filtration efficiency

The original filtration efficiency of the assembly shall not be less than 60%. The test impurities shall be the ISO 12103-M3 test ash, in GB/T 28957.2-2012.

4.3 Lifespan and cumulative efficiency

The assembly life and cumulative efficiency are as specified in the product drawings or technical documents.

4.4 Cleanliness

The inside of the assembly shall be clean; its cleanliness limit is as follows:

a) When the rated volume flow rate is less than 14 L/min, it shall not be greater than 3.2 mg/(L/min);

4.14 Appearance quality

4.14.1 The outer surface of the product shall be flat and smooth, without defects such as bumps, scratches, wrinkles, rough edges, sharp corners, burrs.

4.14.2 All parts of the product made of metal materials shall be subjected to anti-rust treatment. The outer surface shall be even and smooth after surface treatment; there shall be no sagging, dirt, cracks, bottom exposure or falling off.

4.14.3 All parts of the product made of non-metallic materials shall be strong and reliable; they shall have no defects such as cracking and deformation, under normal working conditions.

4.15 Others

4.15.1 When the assembly is equipped with a pressure regulating valve, its opening pressure and hydraulic characteristics shall be as specified in the product drawing.

4.15.2 The connection dimensions and geometric tolerances between the assembly and the host machine shall be as specified in the product drawings.

6.1 General

Each product must pass the inspection by the technical inspection department of the manufacturer AND be accompanied by a product exit-factory inspection certificate, before it can leave the factory.

6.2 Inspection categories

Inspections are divided into exit-factory inspection and type inspection.

6.3 Exit-factory inspection

The product exit-factory inspection items are 4.5 and 4.14.

6.4 Type inspection

Type inspection items are all items specified in Chapter 4. If any of the following situations occur, type inspection shall be carried out:

a) Type finalization and identification of new products;

b) After normal production, when the product structure, materials, processes have undergone major changes, which may affect product performance;

c) When regular performance inspections are required, according to the requirements of the product audit quality control plan,;

d) When the national quality supervision agency proposes requirements for type inspection;

e) When users have requirements.

6.5 Spot checks

When users randomly inspect product quality, they shall conduct random inspections, in accordance with the provisions of GB/T 2828.1. The inspection items, group-batch principles, sampling plans, judgment and re-inspection rules shall be implemented, in accordance with the technical documents, which are agreed between the manufacturer and the user.

7.1 Marking

7.1.1 The outer surface of each product shall be marked with the following information:

a) Manufacturer's name or trademark;

b) Product name and model;

c) Use and maintenance instructions.

7.1.2 The exit-factory inspection certificate shall indicate the following information: […]