1997
SAE International Congress & Exposition
Feb. 24-27, Detroit, MI
COMPUTER-AIDED DESIGN OF A WATER PUMP IMPELLER FOR THE CHRYSLER 4.0 LITER 6
CYLINDER ENGINE
H. Didandeh, C. Toksoy, F. Cutler, A. Ecer, Technalysis, Inc.
H. Fromm, P. Tejero, J. Fitzsimons, W.
Robertz, Chrysler
Introduction
Design of an automotive water
pump requires selection of an impeller geometry which can be constructed of
stamped metal or molded plastic. Generally, the cost of the impeller itself
is not of major importance and its efficiency is not optimized in detail.
The major concern has been the ability to deliver the desired flow rate.
Therefore, most of the present automotive water pump impeller designs tend
to be rather inefficient yet easy to manufacture. In the present study, an
existing impeller was replaced by a new design which can deliver the same
flow rate with considerably higher efficiency. The improvement is
significant in terms of the overall efficiency of the engine. The plastic
impeller contains efficiently designed curved blades which results in
improved performance.