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

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

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

scholarly journals Combining an innovative measurement technique with accurate simulation to analyze engine friction

2018 ◽  
Author(s):  
Hannes Allmaier ◽  
Christoph Knauder ◽  
David E Sander ◽  
Franz M. Reich
Keyword(s):  
Measurement Technique ◽  
Operating Conditions ◽  
Friction Reduction ◽  
Valve Train ◽  
Power Losses ◽  
Friction Power ◽  
Low Viscosity ◽  
Full Load Operation ◽  
Engine Friction ◽  
The Individual

The entanglement of an innovative measurement technique with an accurate simulation yields in total a powerful tool to investigate the friction power losses in engines under realistic operating conditions, as will be discussed in the following. While the total engine friction power losses and the friction of the valve train are measured experimentally, the friction power losses of the crank train journal bearings are calculated using simulation. The result is in an efficient and powerful determination of the individual engine subassemblies under realistic operating conditions ranging from idle to full load operation. The presented method can be used to assess the efficiency of various friction reduction measures like cylinder deactivation, (ultra)low viscosity lubricants or coatings and won in 2014 the Innovation award of Magna Logistics Europe.

Effects of Lubricant and Piston Design on Reciprocating Engine Friction

2005 ◽  
Author(s):  
Luke Moughon ◽  
Victor W. Wong
Keyword(s):  
Surface Characteristics ◽  
Friction Reduction ◽  
Design Parameters ◽  
Contact Friction ◽  
Material Surface ◽  
Reciprocating Engine ◽  
Lubricant Formulation ◽  
Engine Friction ◽  
Boundary Contact ◽  
Individual Design

The piston and rings generate a significant fraction of the total friction in a reciprocating engine, with comparable contributions from the rings and from the piston. In order to develop strategies to reduce overall engine friction, a piston model was used to examine the effects of lubricant, piston design, and material surface characteristics on piston friction. The analysis was performed on a large-bore reciprocating natural-gas engine. First, opportunities in friction reduction via lubricant supply and lubricant formulation were evaluated. This was done by studying how oil film thickness, viscosity, and its temperature dependence affect piston hydrodynamic and boundary-contact friction. Piston design parameters investigated include piston skirt profiles that are more realistic and varied than those previously studied. The piston material was also analyzed in terms of surface waviness. The results show how individual design parameters can be combined to generate the aggregate benefit in engine friction reduction.

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