Fluid Engineering Services Test
Technical Bulletin
Effect of Power Up NNL-690 Oil Fortifier on Lube-Oil
Prepared for
POWER UP INC.
6155-Sth Street S.E.
Calgary, Alberta
By
FES, Inc.
5111 North Perkins Road
Stillwater, OK 74075
September 1990
TESTING PROGRAM, FLUID ENGINEERING SERVICES, INC., STILLWATER, OKLAHOMA
In September of 1990 Power Up commissioned Fluid Engineering Services, Inc. (FES) to conduct a series of tests using New Power Up and a common name brand oil. FES used the personnel and facilities of the Fluid Power Research Center (FPRC) at the Oklahoma State University in Stillwater, Oklahoma.
The objective of the program was to investigate the effect of Power Up on lubrication oil anti-wear characteristics under boundary and hydrodynamic lubrication. In addition,the fluid film affinity retention characteristics of lubrication oil with and without Power Up were studied.
FES, after conducting an initial series of 14 tests, concluded that "test results reveal that the Power Up substantially improves fluid anti-wear characteristics under the surface contact (boundary) lubrication, thick film (hydrdynamic) lubrication and film retention conditions".
The test were conducted using the •Gamma System•. Included in the bulletin is a schematic of the Gamma System, and also an exploded view of the bearing and journal which are used. The system operation is similar to the actual operation of bearings and the lubrication of bearings.
As was mentioned above, the testing was conducted in three specific areas. The following is a brief description of the test and results in each area.
I. CONTACT GAMMA WEAR (boundary lubrication)
A series of six tests were conducted using oil with and without Power Up at 50, 100, and 150 lb loads. The oil selected was Pennzoil 10W-40.
In the 3 test pairs, after the addition of Power Up, the amount of wear was reduced between 39 and 87 percent.
SUMMERY OF SURFACE CONTACT GAMMA TEST
For instance, in Test 117,220 teeth are advanced; therefore OGS is equal to 7.33 (i.e., 220 teeth/ (30 min)). In other words, the wear rate of the journal/bearing assembly used under Test 1 is equal to 7.33 gear teeth advanced per minute In practice, the number of gear teeth advanced is proportional to the amount of wear (dimension decrease) of the journal/bearing assembly of the Gamma Wear Test System. Theoretically, one unit of gear tooth advanced is equal to 0.39 micrometer change of the journal/bearing assembly.
For example,in Test 117, the Pennzoil 10W-40 without Power Up NNL-690 has a OGS of 7.33 teeth/ min; while, in Test 118, the Pennzoil 1OW-40 with Power Up has a OGS of 2.13 teeth/min. Thus, the WRR is 71 percent. In other words, the use of the Power Up Oil Fortifier in Pennzoil 1OW-40 reduced wear to 71 percent of the wear without Power Up.
SLI is the Service Life Improvement Index, which indicates the factor of tribological element service life that can be improved using Power Up. SLI if derived based on the assumption of the service life of tribological element, which is inversely proportional to the wear rate: namely, a wear rate of 1 tooth/min has two times the service life of a wear rate of 2 teeth/min. Obviously, SLI is the ratio of OGS of fluid without and with Power Up, or
SU = GS (without Power Up) GS (with Power Up) (2)
In other words, a tribological element has a service life of 1000 hours with fluid without Power Up thus, a SLI of 2.5 means the tribological element has a service life of 2500 hours with fluid with Power Up.
In the tree test pairs,the SLI was between 1.64 and7.66. We are including with this bulletin the graph showing the test results of one pair of these tests at 150 lbs, (Test #1).
II. THICK FILM GAMMA WEAR (hydrodynamic lubrication)
This test is similar to the contact Gamma, however, the journal turns at a much higher speed (2400 rpm) and the load applied to the bearings is light (0.5 to 1.0lb). This combination of conditions creates a constant film of oil between the journal and bearings (hydrodynamic lubrication).
Since the metal surfaces are not touching in this test,only contaminant wear occurs, and one would expect that the addition of Power Up to an oil would have little or no effect.
Test results showed an average of 18.9% wear reduction after the addition of Power Up. The average SLI under hydrodynamic conditions, was calculated at 1.23.
III. FILM AFFINITY RETENTION
The film affinity retention is used to investigate the degree of wear protection that the fluid film on the surface of tribological elements can provide when the lubrication system loses its lubricating oil.
In the affinity retention section, the FES report states that a significant difference is seen at 50 pounds with Power Up,failure does not occur within the first thirty minutes,whereas without Power up, failure occurs within 8 minutes, (Test #3).
From the test results obtained in this study, it is concluded that the Power Up NNL-690 substantially reduced the wear rate under these test conditions specified in this report with Pennzoil 10W-40.
REFERENCES
- Moyer, C.A., "The Influence of Debris on Rolling Element Performance: Identifying the Relevant Factors." SAE Technical Paper #871687.
- Kauffman, R.E., "Particle Size and Composition Analysis of Wear Debris Using Atomic Emission Spectrometry." STLE 1988 Annual Meeting Preprint #88- AM-8B-1.
- Leugner, L.O., "Use of Sediment Tests and Wear Metal Analysis to Monitor Hydraulic System Condition." STLE 1986 Annual Meeting Preprint #86-AM-5B-2.
- Singer, I.L., Pollock, H.M., Fundamentals of Friction: Macroscopic and Microscopic Processes. NATO SAl Series. Kluwer Academic Publishers, Netherlands, (1992), pp. 131, 190, 191, 302, 303, 571-581.
- Klaman, D., Lubricants and Related Products. Verlag Chemie, Germany (1984), pp. 38-43
- Oliver, C., Marshall, H. and Dancy, J., "Determining Frictional Characteristics of Engine Oils by Engine Friction and Viscosity Measurements". Texaco Inc., 1980.
- McGeehan, J., "A Literature Review of the Effects of Piston and Ring Friction and Lubricating Oil Viscosity on Fuel Economy". Chevron Research Co., 1978.
Kleenoil USA Inc.