Test method for evaluating gasoline detergent in use Part 3: Test method for evaluating gasoline detergent produced effect for electronic port fuel injector(PFI) fouling
1 Scope
This part specifies the test method for evaluating gasoline detergent produced effect for electronic port fuel injector (PFI) fouling.
This part is applicable to the evaluation of gasoline detergent, vehicle gasoline and its component oil on the detergency of electronic port fuel injector (PFI).
Note: This test method is only applicable to evaluate the deposit control performance of gasoline detergent in the top area of the electronic port fuel injector.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document applies.
GB/T 380 Determination of sulfur content in petroleum products (lamp method)
GB/T 503 Determination of the gasoline octane number—Test method for motor octane number
GB/T 5487 Determination of the gasoline octane number—Test method for research octane number
GB/T 6536 Standard test method for distillation of petroleum products at atmospheric pressure
GB/T 8017 Standard test method for vapor pressure of petroleum products—Reid method
GB/T 8018 Determination of oxidation stability of gasoline—Induction period method
GB/T 8019 Standard test method for gum content in fuels by jet evaporation
GB/T 11132 Standard test method for hydrocarbon types in liquid petroleum products by fluorescent indicator adsorption
SH/T 0174 Qualitative test method for thiols of aromatic hydrocarbons and light petroleum products—Doctor test
SH/T 0663 Standard test method for determination of certain alcohols and ethers in gasoline by gas chromatography
SH/T 0693 Standard test method for determination of benzene, toluene, ethylbenzene, p/m-xylene, o-xylene, C9 and heavier aromatics, and total aromatics in finished gasoline by gas chromatography
ASTM D6421 Standard test method for evaluating automotive spark-ignition engine fuel for electronic port fuel injector fouling by bench procedure
3 Terms and definitions
For the purposes of this part, the following term and definition apply.
3.1
cycle
15s pulsing period, followed by a 50 min heating period at 160°C, followed by a 10 min cool-down period
3.2
electronic port fuel injector (PFI)
injection device used to control fuel flow into the combustion chamber
3.3
fouling
formation of carbonaceous deposits on the pintle or metering surfaces of an electronic port fuel injector, which reduces fuel flow
3.4
pintle
needle-like metering device extending beyond the electronic port fuel injector body that is part of an electronic port, which controls flow rate and spray pattern
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Summary of test method
5 Test apparatus and equipment
6 Reagents and materials
7 Test preparation
8 Test procedures
9 Calculation
10 Report
11 Precision
Annex A (Normative) Electronic port fuel injector (PFI) test apparatus and related operation methods
Annex B (Normative) Base gasoline
