Browse Standards J1339_200909
Historical REVISED 2009-09-03

Test Method for Measuring Performance of Engine Cooling Fans J1339_200909

This SAE Recommended Practice is intended for use in testing and evaluating the approximate performance of engine cooling fans. This performance would include flow, pressure, and power. This flow and pressure information is used to estimate the engine cooling performance. This power consumption is used to estimate net engine power per SAE J1349. The procedure also provides a general description of equipment necessary to measure the approximate fan performance.
The test conditions in the procedure generally will not match those of the installation for which cooling and fuel consumption information is desired. The performance of a given fan depends on the geometric details of the installation, including the shroud and its clearance. These details should be duplicated in the test setup if accurate performance measurement is expected. The performance at a given air density and speed also depend on the volumetric flow rate, or the pressure rise across the fan, since these two parameters are mutually dependent. These parameters depend on the pressure drop across the radiator core and the ram pressure due to vehicle motion. For these reasons, the test procedure should be recognized as providing only an approximate measure of installed fan performance.
Although the test procedure is based on running the fan with a motoring dynamometer, the actual installation can be used as a test fixture if an accurate torque meter is available. In this case, the same qualifications discussed apply. Finally, for the effect of a fan clutch in reducing fan use and power consumption, which is not a part of this procedure, refer to SAE J1342.
J1339_202409
2024-09-18
Latest
Revised
J1339_201909
2019-09-30
Historical
Revised
J1339_201504
2015-04-09
Historical
Revised
J1339_200909
2009-09-03
Historical
Revised
J1339_200208
2002-08-05
Historical
Revised
J1339_199506
1995-06-01
Historical
Revised
J1339_198908
1989-08-01
Historical
Revised
J1339_198305
1983-05-01
Historical
Revised
J1339_198107
1981-07-01
Historical
Issued

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 10% off list price.
Login to see discount.
Special Offer: JPaks offers a customized subscription plan that is cost-effective and allows you to choose the number of downloads and Ground Vehicle documents you need. Find more information here.
We also recommend:
TECHNICAL PAPER

Comparison Testing of Bumper Isolators

1999-01-0096

View Details

TECHNICAL PAPER

Position Dependent Amplitude Response in Automotive Loudspeakers

2000-01-0076

View Details

TECHNICAL PAPER

Compression Stress Relaxation Test Comparisons and Development

2000-01-0752

View Details

Get Involved

Want to participate in updating this standard?

X