This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Development of Friction Prediction Procedure and Friction Reduction Technologies for New Nissan HR and MR Engines
Technical Paper
2006-01-0618
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
In developing the new Nissan HR (1.5L Inline-4) and MR (2.0L Inline-4) engines, reducing mechanical friction loss was one of the key elements considered throughout all development phases. In order to achieve the highest target for reducing mechanical friction loss, an improved, more accurate friction prediction procedure was developed. This relative-based friction prediction procedure with approximately 250 points of detailed component analysis was adopted from the beginning of development in order to cope with any specification changes and select the most effective friction reduction measures for the new engines. A description is given of such friction reduction measures adopted in the valvetrain and cranktrain of the new engines. Accuracy of the improved prediction procedure was verified by comparing the predicted results with measurements, which indicated that the procedures provide a reasonable prediction of mechanical friction. As a result of applying various friction reduction measures, the new HR and MR engines achieved friction reduction targets and have the lowest levels of mechanical friction in their class.
Recommended Content
Authors
Citation
Shimada, Y., Abou, S., Okita, K., and Chuubachi, M., "Development of Friction Prediction Procedure and Friction Reduction Technologies for New Nissan HR and MR Engines," SAE Technical Paper 2006-01-0618, 2006, https://doi.org/10.4271/2006-01-0618.Also In
References
- Masuda T. et al. “Prediction of Engine Friction Analysis Simulation” JSAE Technical Paper, No.20045508 2004
- Sato K. et al. “Reduction Technology of Piston Skirt Friction in Consideration of Bore Distortion of Cylinder Block” JSAE Technical Paper, No.20055766 2005
- Sandoval Daniel et al. “An Improved Friction Model for Spark-Ignition Engines” SAE Paper No. 2003-01-0725 2003
- Patton et al. Development and Evaluation of a Friction Model for Spark-Ignition Engines” SAE Paper No. 890836 1989
- Kato A. et al. “An Analysis of Friction Techniques for Direct-Acting Valvetrain System of a New-Generation Lightweight 3-Liter V6 Nissan Engine” SAE Paper No. 940992 1994
- Mabuchi Y. et al. “Surface Conditions to Reduce Cam-Follower Friction” Nissan Technical Review 36 1995
- Yamagichi M. et al. “Development of Fracture Splitting Connecting Rod” JSAE Technical Paper, No.20045532 2004
- Takiguchi M. et al. “Influence of Crank Standard Specification to Piston Friction Loss” The 17th Internal combustion engine symposium Japan 2002
- Shin K. et al. “Some Aspects of Piston-Ring Lubrication and Friction” JSAE. Lubrication 29 11 2001
- Kobayashi H. et al. “Development of Narrow Width Oil and Extremely Low-tension Oil Ring for Gasoline Engine” JSAE. Technical Paper, No.20015048 2001
- Satou N. et al. “Achievement of Decreased Friction in the Piston System by the Use of Circularity Bore Machining for Cylinder Block” JSAE Technical Paper, No.20045537 2004