GB 26511-2011Front underrun protective requirements for commercial vehicle (English PDF)

FOREWORD

Clauses 4 to 7 in this Standard are compulsory, while the others are recommended.

This Standard is not equivalent to ECE Regulation No. 93 (1994, English) "UNIFORM PROVISIONS

CONCERNING THE APPROVAL OF. I. FRONT UNDERRUN PROTECTIVE DEVICES (FUPDs); II.

VEHICLES WITH REGARD TO THE INSTALLATION OF AN FUPD OF AN APPROVED TYPE; III.

VEHICLES WITH REGARD TO THEIR FRONT UNDERRUN PROTECTION (FUP)".

Compared with ECE R93, the significant differences are shown as follows.

 Cancelled the administrative provisions such as application for approval;

 Cancelled the communication on vehicle type approval;

 Cancelled the arrangements of approval marks;

 Cancelled the conformity of production and other administrative procedures.

Annex A of this Standard is normative.

This Standard was proposed by the National Development and Reform Commission.

This Standard is under the jurisdiction of National Technical Committee of Auto Standardization.

This Standard was mainly drafted by China Automotive Technology and Research Centre, China National

Heavy Duty Truck Group Co., Ltd. and China FAW Group Corporation.

The organizations participated in drafting this Standard are Dongfeng Motor Co., Ltd., National Automobile

Quality Supervision and Test Center (Xiangfan), Shanxi Automobile Group Co., Ltd., Anhui Jianghuai

Automobile Co., Ltd., Jiangling Motors Co., Ltd., Beiqi Foton Motor Co., Ltd., National Motor Vehicle Quality

Supervision and Inspection Center (Chongqing), Baotou Bei Ben Heavy-Duty Truck Co., Ltd., SAIC-IVECO

HONGYAN commercial Vehicle Co., LTD., CIMC Vehicle (Group) Co., Ltd., Beijing Office of Isuzu Motors,

Hino Motors (China), Ltd., Volvo(China) Investment Co., Ltd., and Daimler Northeast Asia Investment Co., Ltd.

Chief drafters of this standard are Geng Lei, Wang Xueping, Mie Ligang, Li Yusheng, Liu Liya, Yu Boying

and Su Yuping.

The drafters participated in drafting this Standard are Li Sanhong, Zhang Lili, Li Yugang, Yang Yujuan,

Zhang Luding, Zhaoying, Wu Yufang, Zhang Jian, Fan Mengbo, He Jiaqiang, Zhang Li and Cao Li.

The transitional period for the implementation of this Standard is, from January 1, 2013 for the newly

produced vehicles, while from January 1, 2015 for the vehicles in production.

3

Front Underrun Protective Requirements for Commercial Vehicle

1 SCOPE

This standard specifies the technical requirements and test methods of front underrun protection for

commercial vehicles.

This standard applies to Categories N2 and N3 vehicles.

This standard doesn't apply to.

- Category G vehicles specified in GB/T 15089;

- The vehicles which are designed and manufactured for special purposes and not intended to be fitted with

front underrun protection structurally.

2 NORMATIVE REFERENCES

The following Standards contain provisions which, through reference in this text, constitute provisions of

this Standard. For dated references, subsequent amendments (corrigenda excluded) to, or revisions of, any of

these publications do not apply. However, parties to agreements based on this Standard are encouraged to

investigate the possibility of applying the most recent editions of the Standards indicated below. For undated

references, the latest edition of the applicable Standards referred to apply.

GB/T 15089 Classification of power-driven vehicles and trailers

3 TERMS AND DEFINITIONS

For the purpose of this standard, the terms and definitions given in GB/T 15089 and the followings apply.

3.1

Front Underrun Protection (FUP)

"Front underrun protection" means either a special FUPD, or the body work, chassis parts or other components,

which can fulfill the function of front underrun protection by virtue of their shape and characteristics.

3.2

Front Underrun Protection Devices (FUPD)

"Front Underrun Protection Devices" means the device, usually consisting of cross members, is intended to be

installed on or linked with the chassis or other structural members.

4 TECHNICAL REQUIREMENTS FOR FUPD

4.1 The FUPD shall offer adequate resistance to forces applied parallel to the longitudinal axis of the vehicle

and also satisfy certain dimensional requirements. These shall be demonstrated in accordance with the test

conditions and procedure specified in Annex A.

4.2 The section height of the FUPD cross-member shall not be less than 100 mm for category N2 vehicles and

120 mm for vehicles of category N3.

4.3 The lateral extremities of the cross-member shall not bend to the front or have a sharp outer edge; the lateral

extremities of the cross-member shall be rounded on the outside and have a radius of curvature of not less than

5 TECHNICAL REQUIREMENTS FOR THE VEHICLES EQUIPPED WITH THE FUPD

SATISFIED WITH THE REQUIREMENTS OF CLAUSE 4

5.1 The maximum ground clearance with respect to the underside of the FUPD shall be no more than 400 mm,

under the conditions specified in A.2, between the two points P1.

5.2 Outboard of two P1 points this height may be greater than 400 mm, but the underside shall be below the

Plane M, which is a plane passing through the underside of the FUPD directly below the point P1 and forming a

slope at 15 degrees above the horizontal (see figure 3).

5.3 The maximum width of the FUPD shall not exceed the outer width of the fenders covering the front wheels.

The transverse horizontal distance measured from the outermost edge at any point of FUPD to the outermost end

plane of the front wheel tyres of the same side, excluding the deflection of the tyres, shall not be more than 100

mm, or to the outermost point of access steps to the driver's cabin shall not be more than 200 mm (see figure l).

5.4 Test shall be carried out under the conditions set out in Annex A, during the test process and after the test

completes, the horizontal distance measured from the foremost part of the vehicle to each testing point on front

end plane of the FUPD shall not exceed 400 mm (see figure 2).

5.5 Test shall be carried out under the conditions set out in Annex A, during the test process and after the test

completes, the maximum ground clearance with respect to the underside of the FUPD between the two points P1

shall be no more than 450 mm (see figure 2).

5.6 In measuring the distances as specified in 5.4, any part of the vehicle which is more than 2 m above the

ground shall be excluded.

6 TECHNICAL REQUIREMENTS FOR THE VEHICLES EQUIPPED WITH FRONT UNDERRUN

PROTECTION FUNCTION

6.1 The FUP shall offer adequate resistance to forces applied parallel to the longitudinal axis of the vehicle and

also satisfy certain dimensional requirements. These shall be demonstrated in accordance with the test conditions

and procedure specified in Annex A.

6.2 The section height of the cross-member with FUP function shall not be less than 100 mm for category N2

vehicles and 120 mm for vehicles of category N3.

6.3 The FUP may be so designed that its position at the front of the vehicle can be varied. In this event, there

shall be a guaranteed method of securing it in the service position so that any unintentional change of position is

precluded. The force to be applied to vary the position of the device shall not exceed 400N.

6.4 The maximum ground clearance with respect to the underside of the FUP shall be no more than 400 mm,

under the conditions specified in A.2, between the two points P1.

6.5 Outboard of two P1 points this height may be greater than 400 mm, but the underside shall be below the

Plane M, which is a plane passing through the underside of the FUP directly below the point P1 and forming a

slope at 15 degrees above the horizontal (see figure 3).

6.6 The maximum width of the FUP shall not exceed the outer width of the fenders covering the front wheels.

The transverse horizontal distance measured from the outermost edge at any point of FUP to the outermost end

plane of the front wheel tyres of the same side, excluding the deflection of the tyres, shall not be more than 100

mm, or to the outermost point of access steps to the driver's cabin shall not be more than 200 mm (see figure l).

6.7 Test shall be carried out under the conditions set out in Annex A, during the test process and after the test

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Annex A

(Normative)

Test Conditions and Procedures

A.1 TEST CONDITIONS FOR FUPDs

A.1.1 The test may be conducted either.

a) On a vehicle;

b) On a part of the chassis of the vehicle; or

c) On a rigid test bench.

A.1.2 When testing in accordance with paragraphs A.1.1b) or c), the parts used to connect the FUPD to part of

the vehicle chassis or to the rigid test bench shall be equivalent to those which are used to secure the FUPD

when it is installed on the vehicle.

A.1.3 At the request of the m...

END: Draft Version (GB 26511-2011)