GB 34659-2017 PDF English
US$150.00 · In stock · Download in 9 secondsGB 34659-2017: Requirements and test methods relating to the spray suppression systems of motor vehicles and their trailers Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 34659-2017 | English | 150 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Requirements and test methods relating to the spray suppression systems of motor vehicles and their trailers
| Valid |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB 34659-2017
GB 34659-2017: Requirements and test methods relating to the spray suppression systems of motor vehicles and their trailers
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB34659-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.040.60
T 26
Requirements and test methods relating to the spray-
suppression systems of motor vehicles and their trailers
Issued on. NOVEMBER 1, 2017
Implemented on. JANUARY 1, 2018
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 5
3 Terms and Definitions... 5
4 Technical requirements for spray-suppression devices... 8
5 Requirements for vehicles... 9
6 Particular requirements for spray-suppression systems... 10
7 Measuring Methods... 15
Annex A (Normative) Measuring method of the energy absorbing type of
spray-suppression devices... 16
Annex B (Normative) Measuring method of the air/water separation type of
spray-suppression devices... 19
Annex C (Normative) Diagram of the dimensions and positions of spray-
suppression systems and test equipment... 21
Foreword
All technical content of this Standard is compulsory.
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Attention is drawn to the possibility that some of the elements of this document may
be the subject of patent rights. The issuer of this document shall not be held
responsible for identifying any or all such patent rights.
This Standard was proposed by and shall be under the jurisdiction of the Ministry of
Industry and Information Technology of the People’s Republic of China
The drafting organizations of this Standard. Dongfeng Motor Corporation, National
Passenger Car Quality Supervision and Inspection Center, China FAW Group
Corporation R&D Center, China Quality Certification Center, Hubei Qixing Autobody
Co., Ltd.
The main drafters of this Standard. Hou Cuihua, Zhang Shangjiao, Ma Wei, Yu Boying,
Liu Liya, Sun Lei, Qu Yanping, Wang Sheng, Peng Liying, Zhang Ming, Guo Maolin,
Zhou Yanling.
Requirements and test methods relating to the spray-
suppression systems of motor vehicles and their trailers
1 Scope
This Standard specifies the performance requirements and test methods of the spray-
suppression systems of motor vehicles and their trailers.
This Standard applies to.
a) the spray-suppression systems which are installed on the vehicles of categories
N and O;
b) the complete vehicles of categories N and O on which the spray-suppression
systems defined in 3.1 are installed;
c) the wheels which is covered by driver's cab for the vehicle chassis having a
driver’s cab;
d) the vehicles of category N1, and the vehicles of category N2 whose designed
permissible maximum laden mass is not greater than 7 500 kg. The requirements
of this Standard may be deemed to have been met if they are installed with the
wheel guards specified in GB 7063.
This Standard does not apply to the vehicles of category G which are defined in GB/T
15089.
The installation of the spray-suppression devices defined in 3.2 of this Standard is
voluntary for the following vehicles; and if these vehicles are installed with the spray-
suppression devices, then the requirements of this Standard shall be met.
a) the categories N1, O1, O2 vehicles of which the permissible maximum laden mass
is not greater than 7 500 kg;
b) for the vehicle chassis having a driver’s cab, the wheels which are not covered
by driver’s cab;
c) the chassis having no driver’s cab;
d) the vehicles on which it is impossible to install the spray-suppression devices
under normal service conditions.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition dated applies to this document. For
undated references, the latest edition of the referenced documents (including all
amendments) applies to This Standard.
GB/T 3730.1, Motor vehicles and trailers - Types - Terms and definitions
GB 7063, The wheel guards of motor vehicles
3 Terms and Definitions
For the purposes of this document, the following terms and definitions and those
defined in GB/T 3730.1 and GB/T 15089 apply.
3.1
spray-suppression system
A system which is used to reduce water sprayed from tires during vehicle operation. A
spray-suppression system usually comprises mud guard, outer valance and rain flap.
3.2
spray-suppression device
It is a part of spray-suppression system which includes the following two parts.
3.3
mud guard
A rigid or semi-rigid component which is used to collect water thrown up by operating
tires and guide to the ground. Mud guard can be integrated to vehicle body or other
parts of vehicles in whole or in part, e.g. the lower part of goods platform.
3.4
outer valance
A component constituting mud guard or vehicle body, which is located in the vertical
plane parallel to the vertical plane of vehicles.
3.5
rain flaps
A flexible component which is installed vertically in the rear part of wheels, the lower
part of chassis or goods platform, or on mud guard.
3.6
steered wheels
Wheels which are driven by the steering system of vehicles.
4 Technical requirements for spray-suppression devices
4.1 Technical requirements for the energy absorbing type of spray-
suppression devices
4.1.1 Conduct test as specified in A.4.2 and A.4.3; and calculate the average
percentage of water collection using the method specified in A.4.4, which shall not be
less than 70%.
4.1.3 If the vertical position of sample influences the test result, the process
described in A.4.1 ~ A.4.4 shall be repeated at the position of the maximum and
minimum percentages of water collection. The test results shall still be as specified in
4.1.1 and 4.1.2.
4.2 Technical requirements for the air/water separation type of spray-
suppression devices
4.2.1 The average percentage of water collection shall not be less than 85%, which
is calculated as specified in B.4.3 of Annex B.
4.2.2 If the difference between the maximum-minimum percentage of water
collection in a single test in a round of tests, and the average percentage, exceeds 5%,
the test shall be repeated as required in Annex B.
4.2.3 When the vertical position of the devices influences the teste result, the steps
described in B.4.1 and B.4.4 shall be repeated at the positions of the maximum and
minimum percentages;
5 Requirements for vehicles
5.1 Vehicle status
In order to test whether vehicles conform to this Standard, they shall be in the following
status.
5.2 Axles / Axles
5.2.1 Retractable axle / axle
If vehicles are installed with one or several retractable axles, the spray-suppression
systems shall cover all wheels when the axles descend or rise AND the wheels are in
contact with the ground.
5.3 Position of outer valance
Except the projection of tires which is in contact with the ground, the distance “c”
between the vertical plane tangent to the outer tire wall and the inner edge of outer
valance shall not exceed 100 mm (see Figure C.1).
5.4 Spray-suppression system
6 Particular requirements for spray-suppression systems
6.1 Requirements for the energy-absorbing type of spray-suppression systems
which are installed on the axles of steered or self-steered or non-steered wheels
6.1.1 Mud guard
6.1.1.1 Mud guards shall cover the areas closely adjacent to the upper, front and rear
side of tires in the following ways.
6.1.1.2 The front surface of the rear of mud guards shall be installed with a spray-
suppression device which conforms to 4.1.The device shall cover the inner side of
mud guards; its height is determined by a straight line through wheel center; and the
included angle between the straight line and the horizontal line is not less than 30°
(see Figure C.4).
6.1.2 Outer valance
6.1.2.1 For single axles, start measurement from wheel center, the lower edge of
outer valances not exceeding the distances and radii specified as follows, except the
cases in which the lowest end can be chamfered (see Figure C.3).
6.1.2.2 For multiple axles, the requirements of 6.1.2.1 do not apply to the area
between two laterally perpendicular planes through the first axle and the backmost
axle center; within the area, outer valances can be of the straight-line style to ensure
the structural continuity of spray-suppression devices (see Figure C.5).
6.1.2.6 For semitrailer towing vehicles whose chassis is low, i.e. the height of saddle
is not greater than 1 100 mm, the compliance with the requirements of 6.1.1.1a),
6.1.1.3 and 6.1.2.4 is not necessary.
When a towing vehicle is connected with a trailer, it is not necessary for mud guards
and outer valances to cover the top of rear axle tires to prevent damages of the spray-
suppression devices.
6.1.3 Rain flap
6.1.3.1 The width of rain flaps shall meet the requirements of 6.1.1.1c) for “q”; except
that rain flaps are located within mud guards, the width of rain flaps then is not smaller
than the width of the tread of tires. The width of rain flaps beneath mud guards shall
meet the requirements of this clause, with the deviation of each side not greater than
10 mm.
6.1.3.2 The orientations of rain flaps shall be basically vertical.
6.2.2 Outer valance
6.2.2.1 For single axles or multiple axles that the distance “d” between adjacent axle
tires is not less than 250 mm, the coverage of outer valances shall extend from the
lower part of mud guards to the upper part surface, to the straight line tangent to the
upper edge of tires, and to the place between the vertical plane tangent to the front
edge of tires and the mud guards or rain flaps behind wheels (see Figure C.6).
For multiple axles, outer valances shall be located above each wheel.
6.2.3 Rain flap
Rain flaps shall extend to the lower part of mud guards and meet the requirements of
6.1.3.1 to 6.1.3.9.
6.3 Requirements for the air/water separation type of spray-suppression
systems on axles where steered or non-steered wheels are installed
6.3.1 Mud guard
6.3.1.1 Mud guards shall meet the requirements of 6.1.1.1c).
6.3.2 Outer valance
6.3.2.1 The lower edge of outer valances shall be installed with an air/water
separation spray-suppression device which meets the requirements of 4.2.
6.3.2.3 For multiple axles that the distance between adjacent axle tires not greater
than 300 mm, the outer valances located in the areas between axles shall extend
downwards in accordance with the trajectory specified in 6.3.1.3, not exceeding the
horizontal straight line 100 mm of wheel center (see Figure C.8).
6.3.3 Rain flap
6.3.3.1 Rain flaps shall meet one of the following requirements.
6.3.3.2 The spray-suppression devices conforming to 4.2 shall be installed to rain
flaps in accordance with the requirements of 6.3.3.1b), at least along the whole edge,
and meet the following requirements.
6.4 Others
For multiple axles, when there is any possible interference between the spray-
suppression systems and the axles or suspensions or chassis, the coverage of the
tread of tires by the spray-suppression system of one axle (other than the last axles)
is not necessary.
7 Measuring Methods
For the measuring method of the energy absorbing type of spray-suppression devices
see Annex A.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB 34659-2017 be delivered?Answer: The full copy PDF of English version of GB 34659-2017 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB 34659-2017_English with my colleagues?Answer: Yes. The purchased PDF of GB 34659-2017_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB 34659-2017 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. How to buy and download a true PDF of English version of GB 34659-2017?A step-by-step guide to download PDF of GB 34659-2017_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB 34659-2017".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9
|