Browse Publications Technical Papers 2007-01-3986
2007-10-29

Developing Transmission Fluids with Enhanced Durability 2007-01-3986

1

Fluids for new generations of step-automatic transmissions must provide durable service under severe conditions in a variety of environments. Fluid degradation under severe stress can lead to changes in frictional properties, potentially resulting in undesirable noise, vibration and harshness (NVH) events.
This paper describes the development of a new transmission fluid that delivers significant improvement in squawk durability. The formulation approach resulted in optimum friction characteristics that are essential to overcome stress-induced loss of friction and to reduce NVH. A factorial design of experiments was used in the development process to relate additive effects with friction characteristics of both fresh and aged fluids. Friction durability after laboratory aging was compared with friction characteristics and durability data obtained from field-aged fluids

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Development of a New Fuel-Efficient Manual Transmission Oil

2007-01-3973

View Details

TECHNICAL PAPER

TEST METHODS FOR DETERMINING ANTI-SHUDDER DURABILITY OF AUTOMATIC TRANSMISSION FLUIDS

2007-01-1974

View Details

TECHNICAL PAPER

Investigation of Pitting Mechanism in the FZG Pitting Test

2003-01-3233

View Details

X