SAE J2572-2014

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J2572_201410

SURFACE VEHICLE

RECOMMENDED PRACTICE

J2572

OCT2014

Issued 2006-08

Revised

2014-10

Superseding J2572 OCT2008

Recommended Practice for Measuring Fuel Consumption and Range of Fuel Cell

and Hybrid Fuel Cell Vehicles Fueled by Compressed Gaseous Hydrogen

RATIONALE

This document is being revised to reflect advances in measurement techniques along with information gained through

research and development testing of hydrogen systems since the initial publication.

TABLE OF CONTENTS

1. SCOPE ................................................................................................................................................................... 1

2. REFERENCES ....................................................................................................................................................... 2

3. DEFINITIONS ......................................................................................................................................................... 2

4. TEST CONDITIONS AND INSTRUMENTATION ................................................................................................... 4

5. REQUIRED DATA .................................................................................................................................................. 7

6. DRIVING SCHEDULES .......................................................................................................................................... 8

7. VEHICLE FUEL CONSUMPTION DETERMINATION ........................................................................................... 9

8. VEHICLE RANGE DETERMINATION .................................................................................................................. 16

1. SCOPE

This SAE Recommended Practice establishes uniform procedures for testing fuel cell and hybrid fuel cell electric vehicles,

excluding low speed vehicles, designed primarily for operation on the public streets, roads and highways. The procedure

addresses those vehicles under test using compressed hydrogen gas supplied by an off-board source or stored and

supplied as a compressed gas onboard.

This practice provides standard tests that will allow for determination of fuel consumption and range based on the US

Federal Emission Test Procedures, using the Urban Dynamometer Driving Schedule (UDDS) and the Highway Fuel

Economy Driving Schedule (HFEDS).

Chassis dynamometer test procedures are specified in this document to eliminate the test-to-test variations inherent with

track testing, and to adhere to standard industry practice for fuel consumption and range testing.

Communication between vehicle manufacturer and the governing authority is essential when starting official manufacturer

in-house and official government confirmatory testing that incorporates this practice.

DRAFT

SAE INTERNATIONAL J2572 Revised OCT2014 Page 2 of 16

2. REFERENCES

2.1 Applicable Documents

The following publications form a part of this specification to the extent specified herein. Unless otherwise specified, the

latest issue of SAE publications shall apply.

2.1.1 SAE Publications

Available from SAE International, 400 Commonwealth Drive, Warrendale, PA15096-0001, Tel: 877-606-7323 (inside USA

and Canada) or 724-776-4970 (outside USA), www.sae.org.

SAE J2263 Road Load Measurement Using Onboard Anemometry and Coastdown Techniques

SAE J2264 Chassis Dynamometer Simulation of Road Load Using Coastdown Techniques

SAE J2574 Fuel Cell Vehicle Technology

2.1.2 CFR Publications

Available from the Superintendent of Documents, U.S. Government Printing Office, Mail Stop: SSOP, Washington,

DC20402-9320.

40 CFR Part 86 EPA; Control of Air Pollution from New and In-Use Motor Vehicles and New and In-Use Motor Vehicle

Engines; Certification and Test Procedures

40 CFR Part 600 EPA; Fuel Economy of Motor Vehicles

2.1.3 United States Department of Commerce, National Institute of Standards and Technology Publication

Available from NIST, 100 Bureau Drive, Stop 1070, Gaithersburg, MD20899-1070, Tel: 301-975-

6478,http://physics.nist.gov/cuu/Uncertainty/bibliography.html.

NIST Technical Note 1297, 1994 Edition, “Guidelines for Evaluating and Expressing the Uncertainty of NIST

Measurement Results”

3. DEFINITIONS

3.1 CURB WEIGHT

The total weight of the vehicle with all standard equipment and including batteries/capacitors, lubricants at nominal

capacity, and the weight of optional equipment that is expected to be installed on more than 33% of the vehicle line, but

excluding the driver, passengers, and other payloads. Incomplete light-duty trucks shall have the curb weight specified by

the manufacturer.

3.2 BATTERY

A device that stores chemical energy and releases (or receives) electrical energy (only chemical batteries are considered

in this Recommended Practice).

3.3 PROPULSION BATTERY

A device that provides electrical power that is used to propel the vehicle.

DRAFT

SAE INTERNATIONAL J2572 Revised OCT2014 Page 3 of 16

3.4 AUXILIARY BATTERY

A battery provided separately from the primary energy source for operating an instrument such as a vehicle control device

(peripheral devices).

3.5 RATED AMPERE-HOUR CAPACITY

The manufacturer-rated capacity of a battery in ampere-hours, obtained from a battery discharged at the manufacturer's

recommended discharge rate such that a specified minimum cut-off terminal voltage is reached.

3.6 CAPACITOR

A device that stores energy electrostatically and releases (or receives) electrical energy. High power capacitors used in

hybrid vehicles are frequently called “ultracapacitors.”

3.7 CAPACITOR RATED CAPACITY

The measured capacity of a capacitor, expressed in farads (F).

3.8 FUEL CELL

An electrochemical energy conversion device in which fuel and an oxidant react to generate electricity without any

consumption, physically or chemically, of its electrodes or electrolyte.

3.9 FUEL CELL VEHICLE (FCV)

A vehicle that receives propulsion energy from an onboard fuel cell power system.

3.10 HYBRID FUEL CELL VEHICLE (HFCV)

A vehicle that receives propulsion energy from both an onboard fuel cell power system and another energy source (only

batteries and capacitors are covered in this Recommended Practice).

3.11 RECHARGEABLE ENERGY STORAGE SYSTEM (RESS)

A component or system of components that stores energy, for the purpose of propelling the vehicle, and for which its

supply of energy is rechargeable by an on-vehicle electric motor-generator system, an off-vehicle electric energy source,

or both. Examples of RESS's for HEV's include batteries, capacitors, and electro-mechanical flywheels.

3.12 REGENERATIVE BRAKING

Deceleration of the vehicle caused by operating an electric motor-generator system, thereby providing charge to the

battery or capacitor.

3.13 START-OF-TEST

The point during a test at which the vehicle key switch is first placed in the “on” position.

3.14 END-OF-TEST

The point (in time and distance) at which the vehicle has been decelerated to a rest (zero velocity) condition after the

appropriate test termination criteria have been met, the key switch is placed in the “off” position, and the fuel cell and

propulsion battery or capacitor (if equipped) are stabilized (manufacturer automatic shutdown procedure: Hydrogen fuel

flow stops and the electrical energy storage device reaches a stable condition).

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摘要：

SAE J2572-2014是由国际自动机工程师学会（SAE International）发布的关于燃料电池汽车（FCEV）性能测试与安全评估的行业标准规范。该标准主要规定了燃料电池车辆在燃料消耗量、续驶里程以及氢系统安全等方面的试验方法与技术要求，适用于轻型及中型燃料电池乘用车与商用车。通过统一测试流程与数据记录准则，SAE J2572-2014帮助制造商、检测机构及监管部门准确评估车辆的氢耗水平与运行安全，为燃料电池汽车的市场准入与合规认证提供了重要技术依据。该标准还涵盖了环境条件、压力测量

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