J902_199902 Passenger Car Windshield Defrosting Systems

02/19/1999

Scope
Content

This SAE Recommended Practice provides a test procedure and performance guideline for evaluating passenger car windshield defrosting systems. It is limited to results of tests that can be conducted on uniform test equipment in commercially available laboratory facilities.

The current engineering practice prescribes that for laboratory evaluation of defroster systems, a known quantity of water shall be sprayed on the windshield to form an ice coating and then melted by the defroster under specific vehicle operating conditions. The procedure provides uniform and repeatable laboratory test results, even though under actual conditions such a coating would be removed by scraping before driving the vehicle. The performance obtained, therefore, does not directly relate to actual driving conditions, but serves as a laboratory performance indicator for comparing test results within or between systems. This document is intended as a guide toward standard practice but may be subject to frequent change to keep pace with experience and technical advances and this should be kept in mind when considering its use

Meta TagsDetails
DOI
https://doi.org/10.4271/J902_199902
Pages
9
Citation
SAE International Recommended Practice, Passenger Car Windshield Defrosting Systems, SAE Standard J902_199902, Issued August 1964, https://doi.org/10.4271/J902_199902.
Additional Details
Publisher
Published
Feb 19, 1999
Product Code
J902_199902
Content Type
Recommended Practice
Language
English