1968-02-01

CAVITATION—EROSION DAMAGE CONTROL IN ALUMINUM WATER PUMPS FOR CARS 680498

Under high speed, high temperature driving conditions aluminum water pumps can be damaged by cavitation and/or erosion. Some antifreeze formulas increase the cavitation- erosion damage over that obtained with plain water. Therefore, selection of a compatible antifreeze is an important way of minimizing aluminum pump cavitation-erosion damage. Three laboratory tests are described which attempted to predict antifreeze cavitation-erosion performance in aluminum water pumps in cars in the field. Of the three tests, a high speed, high temperature laboratory pump test gave most reliable antifreeze performance prediction. A venturi apparatus gave results that correlated well with actual pump tests and showed promise as a screening tool for antifreeze evaluation, alloy selection, etc. A vibrator test fixture did not correlate well with pump tests.
Other means of reducing aluminum pump damage such as use of different aluminum alloys and reducing pump speed are also briefly discussed.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 18% 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

Environmental Effects of Engine Coolant Additives

1999-01-0137

View Details

TECHNICAL PAPER

Corrosion of Lead-Tin and Lead-Free Solders in Engine Coolants

930586

View Details

TECHNICAL PAPER

Performance of Aluminum Automotive Radiators

790400

View Details

X