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Performance Benefits with Synthetics. Improved energy efficiency Wider operating temperature range Increased design ratings Reduced maintenance costs Better reliability, safer operation Enhanced environmental performance. Performance Benefits with Synthetics.

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performance benefits with synthetics
Performance Benefits with Synthetics
  • Improved energy efficiency
  • Wider operating temperature range
  • Increased design ratings
  • Reduced maintenance costs
  • Better reliability, safer operation
  • Enhanced environmental performance
performance benefits with synthetics1
Performance Benefits with Synthetics
  • Internal Combustion Engines
    • Lower viscosity with low volatility
    • Improved oxidation stability, less viscosity increase with oil aging
    • Better short trip fuel economy due to lower viscosity at low temperatures
    • Reduced contact losses due to low traction and lower pressure-viscosity coefficient
  • Gears
    • Lower mesh losses due to reduced traction
    • Lower viscous losses at low temperature

1. Improved Energy Efficiency

lower viscosity with low volatility

30

Noack

Polydecene

Volatility

Mineral

(% Loss at

25

250C, 1 hr)

22%

20

15

13%

10

5

0

3

4

5

6

7

8

9

10

11

Kinematic Viscosity at 100C, cS

Lower Viscosity with Low Volatility
  • Polydecene base stocks have lower volatility than mineral oils
gear mesh loss reduction with low traction synthetics

Traction

Force

Mineral Oil

Polydecene

Slide-Roll

Ratio

+S

-S

Area between curves is

energy saved with low

traction synthetic lubes

Range of Slide-Roll

Ratio in Spur Gear

Gear Mesh Loss Reduction with Low Traction Synthetics

Polydecene-based synthetics can improve efficiency of spur/helical gears by 0.5%/mesh

performance benefits with synthetics2

-80

-40

0

200

400

600

Fahrenheit

Mineral Oils

Polydecenes

Alkyl Aromatics

Diesters

Polyol Esters

Polyglycols

Phosphate esters

Celsius

-60

-40

-20

100

200

300

Limited by

Starting Torque

Continuous

Service

Intermittent

Service

Performance Benefits with Synthetics

2. Wider Operating Temperature Range

  • Better oxidative stability
  • Lower pour point, no wax
  • Less volatile
  • Higher VI
synthetics have lower pour points

Pour Point°C

0

Mineral oil

-10

-20

-30

-40

-50

Polydecene

-60

-70

-80

2

4

6

8

10

20

30

40

50

KV at 100°C, cST

Synthetics have Lower Pour Points
increased protection from high vi

Viscosity

Mineral

Oil

High VI

Equivalentviscosity

ISO

VG

Increased protection

40

Temperature, °C

Increased Protection from High VI
  • High VI gives less viscosity loss as temperature increases
performance benefits with synthetics3
Performance Benefits with Synthetics
  • Higher power, same life
  • Same power, longer life
  • Smaller unit, same power, same life

3. Increased Design Ratings

Enclosed - Low traction, higher loads before

Gearboxes scuffing/scoring

Traction Drives - Synthetic high traction fluids are

an enabling technology

Engines - Higher oxidative stability, less

deposits, lower volatility

Slow speed - High shear stable viscosity, still

gears/bearings fluid at low temperature

traction and worm gear efficiency

Worm Gear

Efficiency %

100

Lower Traction

90

80

Polydecene

Mineral Oil

70

60

0

10

20

30

40

50

Reduction Ratio

Traction and Worm Gear Efficiency
  • In worm gears, polydecene-based synthetics give 2-10% energy savings and permit increased thermal ratings
traction drives and traction fluids

30

90C

Traction Fluids

25

PAG 1

Naphthenic

20

IN

OUT

Paraffinic

Maximum Shear Stress, kpsi

15

PAO

SuperSyn

10

PAG 2

5

0

0

100

200

300

400

500

Peak Contact Pressure, kpsi

Traction Drives and Traction Fluids

Traction Drives need high shear strength fluids

performance benefits with synthetics4
Performance Benefits with Synthetics
  • Longer oil life
    • Extended drain intervals
    • Lower disposal costs
  • Longer component life
    • Reduced wear
    • Reduced pitting
  • Improved cleanliness
  • No seasonal oil changes needed
  • Lower oil consumption
    • Less make-up needed

4. Reduced Maintenance Costs

performance benefits with synthetics5
Performance Benefits with Synthetics
  • Aerospace needs, extreme conditions
    • Jet engines - high temperatures
    • Hydraulic systems - low temperatures
    • Space vehicles
      • vacuum
      • temperature extremes
      • inaccessible
  • Automobile racing
    • High loads and temperatures
    • Safety margin - coolant loss, low oil level
  • Fire-resistant hydraulic fluids

5. Better Reliability, Safer Operation

performance benefits with synthetics6
Performance Benefits with Synthetics
  • Biodegradable base stocks
    • wider temperature range
    • more predictable performance
  • Lubricants for refrigeration systems which use non-ozone depleting refrigerants
  • Reduced volume of waste oil through extended drain capability
  • Potential for recovery and recycle

6. Enhanced environmental performance

conclusions
Conclusions
  • Mineral base stocks are average performers for many applications but not optimum.
  • Synthesis matches molecules plus the right additives with applications.
  • Synthetics must show an economic benefit or do what a mineral oil can not.
  • Economic benefits come from
    • Energy efficiency
    • Wider temperature range
    • Increased design ratings
    • Reduced maintenance
    • Reliability and safety.
    • Environmental performance.
  • Future developments will come from studies of structure-property relationships.