Engine Friction Reduction for Improved Fuel Economy

1982 ◽  
Author(s):  
J. T. Kovach ◽  
E. A. Tsakiris ◽  
L. T. Wong
Keyword(s):  
Fuel Economy ◽  
Friction Reduction ◽  
Engine Friction

Gear oil influences on efficiency of gear and fuel economy of cars

2000 ◽  
Vol 214 (2) ◽  
pp. 189-196 ◽  
Author(s):  
W. J. Bartz
Keyword(s):  
Fuel Consumption ◽  
Fuel Economy ◽  
High Efficiency ◽  
Friction Reduction ◽  
Friction Modifiers ◽  
Oil Viscosity ◽  
Fuel Economy Improvement ◽  
Viscosity Grade ◽  
Gear Oil ◽  
Gear Oils

1. First of all, it should be considered that the fuel consumption of a car depends on a set of parameters only partly related to tribology. Their influence is much more pronounced than that of the lubricant. 2. Only the mechanical losses can be decreased by lubricant-related measures. Therefore, the fuel economy improvement that possibly might be realized is rather limited, especially when taking into account the rather high efficiency of gears. 3. When evaluating the influence of viscosity on fuel consumption, the so-called effective viscosity must be taken into account. This is most important for non-Newtonian oils. 4. Reducing the gear oil viscosity by one SAE viscosity grade will result in fuel consumption reductions of 0.2-1.5 per cent at high temperatures and 0.4-2.5 per cent at low temperatures. 5. Using friction modifiers in gear oils, fuel consumption reductions of between 1.0 and 6.0 per cent are realistic. 6. On the basis of a 50 per cent friction reduction maximum fuel consumption reductions between 1.0 and 5.1 per cent by other gear oils are possible, considering different driving programmes. 7. Tests with a real automobile gear resulted in fuel economy improvements of the order of magnitudes of 1 per cent by other gear oils. 8. The results of measurements confirm in principle the calculated estimations.

Examination of the Axial Shape of the Automotive Valvetrain Cam for Engine Friction Reduction

2016 ◽  
Vol 60 (6) ◽  
pp. 1088-1098 ◽  
Author(s):  
Y. Mabuchi ◽  
T. Yamashita ◽  
H. Izumi ◽  
T. Sekikawa ◽  
K. Nishimura ◽  
...  
Keyword(s):  
Friction Reduction ◽  
Engine Friction

Development Tools for Base Engine Friction Reduction

MTZ worldwide ◽  
2014 ◽  
Vol 75 (3) ◽  
pp. 32-37 ◽  
Author(s):  
Jens Hadler ◽  
Marcus Gohl ◽  
Gunter Knoll ◽  
Katja Backhaus
Keyword(s):  
Friction Reduction ◽  
Development Tools ◽  
Base Engine ◽  
Engine Friction

Engine friction reduction

MTZ worldwide ◽  
2005 ◽  
Vol 66 (7-8) ◽  
pp. 30-33 ◽  
Author(s):  
Franz J. Maassen ◽  
Jürgen Dohmen ◽  
Stefan Pischinger ◽  
Markus Schwaderlapp
Keyword(s):  
Friction Reduction ◽  
Engine Friction
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