Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by and is under the jurisdiction of SAC/TC 280 National Technical Committee on Petroleum Products and Lubricants of Standardization Administration of China.
Introduction
This method is developed to judge the tendency of gasoline deposits on engine intake valves by the amount of the deposits generated by simulating the process of generating deposits on the intake valve of an intake injection engine; it is applied for the evaluation of gasoline cleanliness and the development of gasoline detergents. Compared with the engine test, this method has the advantages such as short test time, small amount of samples, and low investment in instruments and equipment.
Test method for evaluating gasoline cleanliness - Simulation test of intake valve deposit (IVD) of gasoline engine
Warning —— This standard involves some dangerous materials, operations and equipment, but it does not purport to address of the safety concerns, if any, associated with its use. Therefore, it is the responsibility of the user of this standard to establish appropriate safety and protection measures and determine the applicability of regulatory limitations prior to use.
1 Scope
This standard specifies the simulation test for intake valve deposits (IVD) in intake injection gasoline engine, which is used to evaluate the tendency of deposits on gasoline engine intake valves.
This standard is applicable to vehicle gasoline and vehicle gasoline detergents.
Note: The applicability of this standard to the test conditions of vehicle ethanol gasoline has not yet been identified, and needs be verified in the relevance to the engines.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 4756 Method for manual sampling of petroleum liquids
GB 17930 Gasoline for motor vehicles
GB/T 19230.6 Test method for evaluating gasoline detergent in use - Part 6: Engine dynamometer test method for influence of intake valve and combustion chamber deposit tendencies of gasoline detergent (M111 method)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
intake valve deposit, IVD
substances, generated by fuels, lubricants and additives or drawn externally, which are deposited on the surface of the intake valve
3.2
calibration reference fuel
stable fuel, with gasoline characteristics, used to calibrate the gasoline engine IVD simulation tester
3.3
calibration reference detergent
gasoline detergent, used to calibrate the gasoline engine IVD simulation tester, which is added with a specified amount of calibration reference fuel and generates a certain mass of deposits
3.4
deposit accelerant
substance which accelerate the generation of the deposits, similar to IVDs generated in a long run, on a metal surface in a high-temperature, oxygenic environment
4 Summary of test method
In the specified test conditions, a specific amount of the sample is mixed with air through a nozzle and injected onto a deposit collector that has been weighed and heated to the test temperature; after such simulation of gasoline engine IVD generation, the deposit collector is weighed and photographed.
5 Apparatus and equipment
5.1 Test equipment
Gasoline engine IVD simulation tester: its technical requirements are detailed in Annex A.
5.2 Apparatus
5.2.1 Analytical balance: with an accuracy of 0.1mg.
5.2.2 Desiccator: with desiccant inside.
5.2.3 Electric oven: its temperature may be controlled between 100℃±2℃.
5.2.4 Microliter syringe: 1,000μL, 250μL.
5.2.5 Volumetric flask: 300mL.
5.2.6 Tweezers.
5.2.7 Balance gloves.
5.2.8 Digital camera: with a resolution of not lower than 8m pixels.
Foreword i
Introduction ii
1 Scope
2 Normative references
3 Terms and definitions
4 Summary of test method
5 Apparatus and equipment
6 Reagents and materials
7 Sampling
8 Preparation
9 Test steps
10 Calculation
11 Test report
12 Precision and deviation
Annex A (Normative) Technical requirements for gasoline engine IVD simulation tester
Annex B (Normative) Equipment calibration
Bibliography
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by and is under the jurisdiction of SAC/TC 280 National Technical Committee on Petroleum Products and Lubricants of Standardization Administration of China.
Introduction
This method is developed to judge the tendency of gasoline deposits on engine intake valves by the amount of the deposits generated by simulating the process of generating deposits on the intake valve of an intake injection engine; it is applied for the evaluation of gasoline cleanliness and the development of gasoline detergents. Compared with the engine test, this method has the advantages such as short test time, small amount of samples, and low investment in instruments and equipment.
Test method for evaluating gasoline cleanliness - Simulation test of intake valve deposit (IVD) of gasoline engine
Warning —— This standard involves some dangerous materials, operations and equipment, but it does not purport to address of the safety concerns, if any, associated with its use. Therefore, it is the responsibility of the user of this standard to establish appropriate safety and protection measures and determine the applicability of regulatory limitations prior to use.
1 Scope
This standard specifies the simulation test for intake valve deposits (IVD) in intake injection gasoline engine, which is used to evaluate the tendency of deposits on gasoline engine intake valves.
This standard is applicable to vehicle gasoline and vehicle gasoline detergents.
Note: The applicability of this standard to the test conditions of vehicle ethanol gasoline has not yet been identified, and needs be verified in the relevance to the engines.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 4756 Method for manual sampling of petroleum liquids
GB 17930 Gasoline for motor vehicles
GB/T 19230.6 Test method for evaluating gasoline detergent in use - Part 6: Engine dynamometer test method for influence of intake valve and combustion chamber deposit tendencies of gasoline detergent (M111 method)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
intake valve deposit, IVD
substances, generated by fuels, lubricants and additives or drawn externally, which are deposited on the surface of the intake valve
3.2
calibration reference fuel
stable fuel, with gasoline characteristics, used to calibrate the gasoline engine IVD simulation tester
3.3
calibration reference detergent
gasoline detergent, used to calibrate the gasoline engine IVD simulation tester, which is added with a specified amount of calibration reference fuel and generates a certain mass of deposits
3.4
deposit accelerant
substance which accelerate the generation of the deposits, similar to IVDs generated in a long run, on a metal surface in a high-temperature, oxygenic environment
4 Summary of test method
In the specified test conditions, a specific amount of the sample is mixed with air through a nozzle and injected onto a deposit collector that has been weighed and heated to the test temperature; after such simulation of gasoline engine IVD generation, the deposit collector is weighed and photographed.
5 Apparatus and equipment
5.1 Test equipment
Gasoline engine IVD simulation tester: its technical requirements are detailed in Annex A.
5.2 Apparatus
5.2.1 Analytical balance: with an accuracy of 0.1mg.
5.2.2 Desiccator: with desiccant inside.
5.2.3 Electric oven: its temperature may be controlled between 100℃±2℃.
5.2.4 Microliter syringe: 1,000μL, 250μL.
5.2.5 Volumetric flask: 300mL.
5.2.6 Tweezers.
5.2.7 Balance gloves.
5.2.8 Digital camera: with a resolution of not lower than 8m pixels.
Contents of GB/T 37322-2019
Foreword i
Introduction ii
1 Scope
2 Normative references
3 Terms and definitions
4 Summary of test method
5 Apparatus and equipment
6 Reagents and materials
7 Sampling
8 Preparation
9 Test steps
10 Calculation
11 Test report
12 Precision and deviation
Annex A (Normative) Technical requirements for gasoline engine IVD simulation tester
Annex B (Normative) Equipment calibration
Bibliography
