Test Medium for the Rapid Analysis of Motor Oils in Internal Combustion Engines

• US 20100206056A1
• Filed: 12/08/2005
• Published: 08/19/2010
• Est. Priority Date: 12/08/2004
• Status: Active Grant

• Current Assignee: Gert Horstmeyer
• Original Assignee: Gert Horstmeyer
• Inventors: Horstmeyer, Gert
• Granted Patent: US 8,748,185 B2
• Time in Patent Office: Days
• US Class Current: 73/53.70
• CPC Class Codes: B01D 39/18 the material being cellulose or derivatives thereof cork or peat B01D39/1646 ; making filter paper D21F11/14
• CPC Class Codes: G01N 33/2888 Lubricating oil characteristics, e.g. deterioration lubricating properties G01N33/30

Abstract

The present invention relates to a test medium for the rapid analysis of engine oils in internal combustion engines,

• • having a weight per unit area of 50.0 to 200.0 g/m²,
  • comprising, based on the total weight of the test medium,
  • 20.0% by weight to 98.0% by weight of cotton pulp,
  • 0.0% by weight to 50.0% by weight of cellulose and
  • 0.1% by weight to 50.0% by weight of silicic acid and/or at least one silicate salt.

The present invention also relates to a method for the rapid analysis of engine oils in internal combustion engines, in which a drop of an engine oil to be analysed is applied to the test medium according to the invention and is allowed to penetrate into the test medium, and the test result is then preferably compared with at least one reference image in order to determine the condition of the engine.

Claims

1. A test medium for the rapid analysis of engine oils in internal combustion engines, having a weight per unit area of 50.0 to 200.0 g/m² comprising, based on the total weight of the test medium, 45.0% by weight to 98.0% by weight of cotton pulp, 0.0% by weight to 50.0% by weight of cellulose and 0.5% by weight to 30.0% by weight of silicic acid and/or at least one silicate.

2. The test medium according to claim 1, wherein the test medium contains, based on 0.031 m² of test medium, 0.1 g to 2.0 g of silicic acid.

3. The test medium according to claim 1, wherein the test medium contains, based on 0.031 m² of test medium, 0.1 g to 1.5 g of at least one silicate.

4. The test medium according to claim 1, wherein the test medium contains aluminium silicate and/or calcium silicate.

5. The test medium according to claim 1, wherein the test medium contains, based on the total weight of the test medium, 45.0% by weight to 98.0% by weight of cotton pulp and 0.0% by weight to 25.0% by weight of cellulose.

6. The test medium according to claim 5, wherein the test medium contains, based on the total weight of the test medium, 60.0% by weight to 98.0% by weight of cotton pulp and 0.0% by weight to 10.0% by weight of cellulose.

7. The test medium according to claim 1, wherein the test medium contains, based on 0.031 m² of test medium, 0.01 to 0.1 g of binder and/or retention agent.

8. The test medium according to claim 1, wherein the test medium contains, based on 0.031 m² of test medium, 0.001 g to 0.1 g of at least one defoamer.

9. A method for the rapid analysis of engine oils in internal combustion engines, in which a drop of an engine oil to be analysed is applied to a test medium according to at least one of the preceding claims and is allowed to penetrate into the test medium.

10. The method according to claim 9, wherein the engine oil is applied to the test medium in spot form.

11. The method according to claim 9, wherein the penetration time taken for the engine oil to penetrate into the test medium is measured.

12. The method according to claim 9, wherein the resulting separation of the oil components is evaluated.

13. The method according to claim 12, wherein the resulting separation of the oil components is compared with at least one reference image.

14. The method according to claim 12, wherein the resulting separation of the oil components is evaluated 1 second to 60 minutes after the application of the engine oil.

15. The method according to claim 9, wherein the viscosity of the engine oil is determined at least qualitatively.

16. The method according to claim 9, wherein the degree of oxidation of the engine oil is determined at least qualitatively.

17. The method according to claim 9, wherein the carbon black content in the engine oil is determined at least qualitatively.

18. The method according to claim 9, wherein the water content in the engine oil is determined at least qualitatively.

19. The method according to claim 9, wherein the glycol content in the engine oil is determined at least qualitatively.

20. The method according to claim 9, characterized in that wherein any dilution of the engine oil with fuel is determined at least qualitatively.

21. The method according to claim 9, wherein the dust content in the engine oil is determined at least qualitatively.