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SAE J1321 (OCT2020)

Current Revision

Fuel Consumption Test Procedure - Type II

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This document describes a rigorous-engineering fuel-consumption test procedure that utilizes industry accepted data collection and statistical analysis methods to determine the change in fuel consumption for individual trucks and buses with GVWR of more than 10000 pounds. The test procedure may be conducted on a test track or on a public road under controlled conditions and supported by extensive data collection and data analysis constraints. The on-road test procedure is offered as a lower cost alternative to on-track testing, but the user is cautioned that on-road test may result in lower resolution (or precision) data due to a lack of control over the test environment. Test results that do not rigorously follow the method described herein are not intended for public use and dissemination and shall not be represented as an SAE J1321-Type II test result.

SDO SAE: SAE International
Document Number J1321
Publication Date Oct. 20, 2020
Language en - English
Page Count 48
Revision Level 202010
Supercedes
Committee
Publish Date Document Id Type View
Oct. 20, 2020 J1321_202010 Revision
Feb. 6, 2012 J1321_201202 Revision
Oct. 1, 1986 J1321_198610 Revision