GB/T 12673-1990 (GB/T12673-1990, GBT 12673-1990, GBT12673-1990)
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Motor vehicle main dimensions measurement method
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| GB/T 12673-1990 | English | 85 |
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Motor vehicles -- Basic dimensions -- Measuring method
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Preview PDF: GB/T 12673-2019 Standards related to: GB/T 12673-1990
| Standard ID | GB/T 12673-1990 (GB/T12673-1990) | | Description (Translated English) | Motor vehicles -- Basic dimensions -- Measuring method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | T26 | | Classification of International Standard | 43.02 | | Word Count Estimation | 24,231 | | Date of Issue | 1990/12/30 | | Date of Implementation | 1991/10/1 | | Older Standard (superseded by this standard) | GB 1334-1977 | | Quoted Standard | GB/T 3730.2; GB/T 3730.3; GB/T 8170; JB 3983 | | Drafting Organization | Changchun Automobile Research Institute | | Administrative Organization | National Automotive Standardization Technical Committee | | Proposing organization | China Automotive Industry Corporation | | Issuing agency(ies) | State Bureau of Technical Supervision | | Summary | This standard specifies the method for measuring the major dimensions of the car. This standard applies to cars, buses and trucks, other vehicles may refer to. |
GB/T 12673-1990
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC 629.113/.115.071.1:531.7
T 26
GB/T 12673-90
Motor Vehicles - Basic Dimensions -
Measuring Method
ISSUED ON: DECEMBER 30, 1990
IMPLEMENTED ON: OCTOBER 01, 1991
Issued by: State Bureau of Technical Supervision
Table of Contents
1 Subject Content and Application Scope ... 3
2 Normative References ... 3
3 Terms ... 3
4 Measuring Conditions ... 4
5 Method of Rounding off of Numerical Values ... 5
6 Dimension Code ... 6
7 Determination of Base Plane and Base Point ... 6
8 External Dimension Code, Name and Measuring Position ... 9
9 Loading Dimension, Code, Name and Measuring Position ... 13
10 Glass Area ... 16
11 Internal Dimension Code, Name and Measuring Position ... 17
Appendix A Attached Figures (Additional) ... 18
Additional Explanation ... 24
Motor Vehicles - Basic Dimensions -
Measuring Method
1 Subject Content and Application Scope
This standard specifies measuring method of basic dimension of motor vehicles.
This standard is applicable to saloon cars, passenger cars and trucks, and other
vehicles may refer to.
2 Normative References
GB 3730.2 "Motor Vehicles and Towed Vehicles-Masses of Vehicles-Terms and
Definitions"
GB 3730.3 "Motor Vehicles and Towed Vehicles-Dimensions of Vehicles-Terms and
Definitions"
GB 8170 "Rules for Rounding off of Numerical Values"
JB 3983 "Method for Measuring Reference Volume for Saloon Car Luggage Carrier"
JB 4100 "Saloon Car Carriage-Internal Dimension-Measuring Method"
3 Terms
3.1 Y-base plane
Longitudinal symmetrical plane of a vehicle, in accordance with the requirements of
Chapter 2 in GB 3730.3.
3.2 X-base plane
Vertical plane vertical to Y-base plane, in accordance with the requirements of the
manufacturer.
3.3 Z-base plane
4.2 Steering wheels of motor vehicles shall be placed on the measuring site in
straight ahead condition.
4.3 The tyre pressure of motor vehicles shall meet the design requirements.
4.4 Unless otherwise specified, the length shall be measured on the straight line
parallel to the support plane and Y-base plane; the width shall be measured on the
straight line parallel to X-base plane; and the height shall be measured on the straight
line vertical to the support plane.
4.5 Motor vehicles, if equipped with movable spare parts, shall be measured
according to the following specified state.
4.5.1 The container breast board shall be in off state, except when measuring the
height QGB-H501 from container base plate to ground.
4.5.2 Car door, motor hood, luggage cabin cover and ventilation vent cover, etc.
shall be in off state.
4.5.3 Radio antenna shall be in take-back state.
4.5.4 License plate is excluded, but license plate frame is included.
4.6 Measuring instrument and equipment
a. Height gauge: measuring range 0~1000mm and minimum scale 0.5mm;
b. Ground clearance meter: measuring range 0~500mm and minimum scale 0.5mm;
c. Angle ruler: measuring range 0°~180° and minimum scale 1°;
d. Steel tape: measuring range 0~20m and minimum scale 1mm;
e. Level gauge;
f. Three-dimensional H-point device.
Note: Three-dimensional coordinate-instrument may be available.
5 Method of Rounding off of Numerical Values
Comply with GB 8170.
6 Dimension Code
Each dimension in this standard has one designated code which consists of word
initial, code number and digit.
6.1 Word initial
ISO: expresses the word initial of measuring items of this standard same as ISO
4131-1979.
QGB: expresses the word initial adopted in this standard.
6.2 The following capitals express the classification code of measured dimension
L -- Length
H -- Height
W -- Width
V -- Volume
Note: L, H and W, if express the angle, shall be marked relative to X, Z and Y-base plane.
6.3 Digit section
1~99 internal dimension
100~199 external dimension
200~299 goods or luggage dimension
400~499 truck external dimension
500~599 truck goods dimension
7 Determination of Base Plane and Base Point
7.1 Determination of base plane (see Table 1)
doors open at the most
ISO-W122 Inclination angle in car door glass
Measure the included angle between the
plumb-line and the straight line of
window lower edge leading to the upper
edge (or a point with a height of 457mm
from window lower edge when variable
camber glass is used) in X plane
passing through the front seat R, and
both ends of the straight line shall
simultaneously be located on the glass
external surface
No load A5
QGB-W106 Vehicle width at front wheel mudguard
Measure the distance between two Y
planes tangential to the outer edge of
front wheel mudguard in X plane
passing through the front wheel center
No load A4
QGB-W107 Vehicle width at rear wheel mudguard
Measure the distance between two Y
planes tangential to the outer edge of
rear wheel mudguard in X plane passing
through the rear wheel center
No load A4
QGB-W409 Vehicle width at tail door opening
Measure the distance between two Y
planes tangential to the widest point of
two tail car doors when the tail car doors
open at the most
No load A4
QGB-W410 Vehicle width at outside rearview mirror
Measure the distance between two Y
planes tangential to the outermost point
of the outside rearview mirror3)
No load A7
Notes:
1) The center plane is the equidistant one with the inner edge of outside wheel rim and the
outer edge of inside wheel rim.
2) Protruding position excludes deformation of rearview mirror, lateral mark lamp, flexible
mudguard, antiskid chain, tyre and surface contact part, etc.
3) The outside rearview mirror shall be set at the operating position; if only one rearview mirror
is available, the distance from Y plane tangential to outer point of rearview mirror to Y-base
plane of motor vehicle shall be measured.
8.2 External height (see Table 7)
Table 7
Code Name Measuring position Load condition Figure number
ISO-H100
Vehicle height According to GB 3730.3
No load
A6, A8 ISO-H101 Full load
ISO-H113 Maximum total weight
ISO-H114 Motor hood height
Measure the distance between
motor hood C point and support
plane in Y-base plane
Full load A6, A8
ISO-H110 Vehicle height at luggage cabin cover opening
Measure the distance between
support plane and Z plane touching
the upper edge of luggage cabin
No load A6
QGB-L129 Rear end length
Measure the distance between X
plane passing through back deck D
point and X plane tangential to
vehicle body rearmost end
No load A9
QGB-L403 Distance from bumper front end to cab back
Measure the distance between two
X planes respectively tangential to
bumper front end and cab back
external surface in Y-base plane
No load A10
QGB-L404 Distance from cab back to rear axle
Measure the distance between X
plane tangential to cab back
external surface and X plane
passing through rear axle center
line4)
No load A10
QGB-L408
Distance from front
bumper to cab during cab
turning
Measure the distance between two
X planes respectively tangential to
front bumper forefront and cab
forefront when the cab is located at
the maximum turning position
No load A11
QGB-L409 Cab turning angle
Measure the included angle of cab
at the initial position of some
plumb-line in Y plane and at the
maximum turning position
No load A11
QGB-L410 Cab length
Measure the distance between two
X planes respectively tangential to
instrument board front end and cab
back internal surface in Y-base
plane
No load A10
QGB-L411 Distance between double rear axles
Measure the distance between two
X planes respectively passing
through front rear axle center and
back rear axle center in Y-base
plane
No load A10
QGB-L30
X coordinate of
instrument board front
end
Distance from instrument board
front end to X-base plane (minus
dimension expresses the actual
front end of instrument board is
located at the back of X-base
plane)
No load A10
Notes:
1) If right and left axle spacing is unequal, list simultaneously, divide by "/"; the front value
expresses left side; for the vehicle with more than three axles, the axle spacing between
two adjacent wheels from top to rearmost shall be indicated, and the total axle spacing is
the sum of each axle spacing.
2) For double front axle condition, it shall be X plane of connecting line midpoint of two front
axle centers.
3) For double rear axle condition, it shall be X plane of connecting line midpoint of two rear
axle centers.
4) For double rear axle condition, the rear axle center line shall be the center line of double
rear axle spacing.
rearmost end of opening tail board on goods
carriage base plate in Y-base plane
QGB-L201 Loading length
Measure the distance from the second row
backrest back to rearmost end of opened tail
board on goods carriage base plate in Y-base
plane
No load A13
QGB-L202 Loading length
Measure the distance from front backrest back to
internal surface of closed tail board (or door) on
goods carriage base plate in Y-base plane
No load A13, A14
QGB-L203 Loading length
Measure the distance from the second row
backrest back to internal surface of closed tail
board (or door) on goods carriage base plate in
Y-base plane
No load A13, A14
QGB-L204
Loading length at
shoulder height
of front seat
Horizontally measure the minimum distance from
front backrest top back to internal surface of
closed tail board (or door) at shoulder height
position in Y-base plane
No load A13, A14
QGB-L208 Loading length
Measure the horizontal distance from X plane
passing through cab seat backrest back to rear
bin gate inside on the intersecting line of Y-base
plane and Z plane passing through cab seat
backrest end face
No load A12
QGB-L209 Loading length
Measure the distance from cab seat backrest
back to internal surface of rear bin gate on goods
carriage base plate in Y-base plane
No load A12
QGB-L504 Distance from cab to cargo box
Measure the minimum distance from external
surface of cab backwall to external surface of
cargo box front board in Y-base plane
No load A15
QGB-L505 Length of cargo box base plate
Measure the distance from internal surface of
cargo box front board to internal surface of tail
board on cargo box base plate in Y-base plane
No load A15
QGB-L506 Length of cargo box top
Measure the minimum distance from crest line in
cargo box front board top to crest line in tail board
top in Y-base plane
No load A15
QGB-L507 Total length of cargo box
Measure the maximum distance from external
surface of cargo box front board to external
surface of tail board in Y-base plane
No load A15
QGB-L508
Length of side
door loading
channel
Measure longitudinal minimum distance between
side door channels when side loading door opens
at the most
No load A14
QGB-L509 Loading length
Measure the distance from the third row backrest
back to internal surface of closed tail board (or
door) on goods carriage base plate in Y-base
plane
No load A14
QGB-L510 Loading length
Measure the distance from upper rear surface of
the third row backrest to internal surface of closed
tail board (or door) in Y-base plane
No load A14
QGB-L511
Position of front
seat loading
surface
Measure the distance from upper rear surface of
front backrest to X-base plane No load A14, A15
QGB-L512 Loading length
Measure the distance from engine bump back to
internal surface of closed tail board (or door) on
goods carriage base plate in Y-base plane
No load A14
9.4 Loading volume
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