Method of improving the oxidative stability of a lubricating composition
A technology of lubricating composition and oxidative stability, applied in the directions of fuel additives, liquid carbon-containing fuels, petroleum industry, etc., can solve problems such as the use of fuels that are not mentioned
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0078] The tests were carried out on three hydrocarbon base fuel gasolines. Comparative Example A is a base fuel widely used in fuel sold in the Netherlands in 2002. Comparative Example B corresponds to Comparative Example A, where heavy platinum reformate (the higher boiling fraction of refinery steam produced by reforming naphtha over a platinum catalyst) is added to increase aromatics. Example 1 corresponds to Comparative Example A, where light FCC gasoline (the lower boiling fraction of a refinery stream produced by catalytic cracking of heavier hydrocarbons) is added to increase olefins. The sulfur content of the fuel was adjusted to 50 ppmw S by adding dimethyl sulfide where necessary to eliminate possible effects caused by differences in sulfur content.
[0079] The resulting fuel has the properties given in Table 2:-
[0080] Table 2
[0081]
[0082]
[0083] Table 3 lists the test results for these fuels:-
[0084] table 3
[0085]
[0086] The poin...
Embodiment 2 and 3
[0090] Four hydrocarbon base fuel gasolines were tested. Comparative Example C was the base fuel widely used in fuels sold in the Netherlands in 2002. Comparative Example D corresponds to Comparative Example C where heavy platinum reformate was added to increase aromatics. Example 1 corresponds to Comparative Example C, wherein 15 parts by volume of diisobutene is added for every 85 parts by volume of the base fuel of Comparative Example C. Diisobutene is a mixture of 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene in proportions obtained by commercial manufacture. Example 3 corresponds to Comparative Example C, wherein the refinery stream of C5 and C6-olefins was added in a ratio of 15 parts by volume olefins per 85 parts by volume of the base fuel of Comparative Example C.
[0091] The resulting fuel has the properties given in Table 4:-
[0092] Table 4
[0093]
[0094] The test results for these fuels are shown in Table 5:-
[0095] table 5
[0096] ...
Embodiment 4
[0099] A fuel similar to Comparative Example C (Comparative Example E) was mixed with diisobutene and ethanol to obtain a gasoline composition containing 10% v / v diisobutene and 5% v / v ethanol (Example 4). The resulting gasoline contained 13.02% v olefins, had an initial boiling point of 40°C, a final boiling point of 168.5°C, and met the other parameters of the present invention. The fuel was tested in a Toyota Avensis 2.0 liter VVT-i direct injection spark ignition engine relative to Comparative Example E, and relative to the same base fuel containing 5% v / v ethanol (Comparative Example F). Comparative Example E and Comparative Example F were not within the parameters of the present invention due to their olefin content (3.51% v / v and 3.33% v / v total olefins, respectively).
[0100] Table 6 lists the fuel details:-
[0101] Table 6
[0102]
[0103] Under acceleration tests (1200-3500rpm, 5th gear, wide-open throttle (WOT), 1200-3500rpm, 4th gear, WOT, and 1200-3500rp...
PUM
| Property | Measurement | Unit |
|---|---|---|
| boiling point | aaaaa | aaaaa |
| boiling point | aaaaa | aaaaa |
| boiling point | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More