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1、BRITISH STANDARD AUTOMOBILE SERIES BS AU 179:1981 Specification for Dimensional codes for passenger cars UDC 629.114.6.071:003.6 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:49:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 179:1981 This British Stand
2、ard, having been prepared under the direction of the Automobile Standards Committee, was published under the authority of the Executive Board and comes into effect on 31 July 1981 BSI 02-2000 The following BSI references relate to the work on this standard: Committee reference AUE/- Draft for commen
3、t 78/71554 DC ISBN 0 580 12188 7 Foreword This British Standard has been prepared, under the direction of the Automobile Standards Committee, to implement ISO 4131:1979 “Road vehicles Dimensional codes for passenger cars” prepared by Technical Committee ISO/TC 23, Road vehicles, of the International
4、 Organization for Standardization (ISO). All the dimensions in ISO 4131 are included in this British Standard, with the same or essentially similar definitions and, except where otherwise indicated, with the same codes less the prefix “ISO”, and are given in prominent bold type. Some other dimension
5、s are also included with codes which are already in use in some major car-manufacturing countries. Each code consists of a capital letter denoting the type of dimension (L for length; H for height; W for width; D for diameter; V for volume; L, H or W for an angle, according to whether it is dimensio
6、ned with respect to the zero X, Z or Y plane) and a number. To enable the code for a particular dimension and the dimension to which a particular code applies to be traced, an alphabetical index of dimensions and an index of codes are provided. A British Standard does not purport to include all the
7、necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, p
8、ages 1 to 20 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: London South Bank Uni
9、versity, London South Bank University, Sat Dec 09 01:49:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 179:1981 BSI 02-2000i Contents Page ForewordInside front cover 1Scope1 2References1 3Definitions1 4Dimensional codes2 5Three-dimensional reference system, fiducial marks and R-points2 6Externa
10、l dimensions4 7Internal dimensions8 Alphabetical index19 Index of codes20 Figure 1 X and Z coordinates of wheel centrelines and fiducial marks13 Figure 2 Y coordinates of fiducial marks13 Figure 3 Dimensioning of R-points14 Figure 4 External dimensions15 Figure 5 Internal dimensions measured paralle
11、l to the zero Y plane16 Figure 6 Internal dimensions measured parallel to the zero Z plane17 Figure 7 Internal dimensions measured parallel to the zero X plane18 Figure 8 Minimum turning circle18 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:49:48 GMT+00:00
12、 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:49:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 179:1981 BSI 02-20001 1 Scope This British Standard specifies the codes to be used for dimensional data relating
13、to passenger cars (see 3.1) and their derivatives. 2 References The following standards publications are referred to in this standard. BS AU 173, Definitions for a three-dimensional reference system and fiducial marks. ISO 1176, Road vehicles Weights Vocabulary. ISO 3832, Road vehicles Luggage compa
14、rtments of passenger cars Method of measuring the reference volume. ISO 4131, Road vehicles Dimensional codes for passenger cars. 3 Definitions NOTEThroughout this British Standard, unless otherwise stated, the supporting surface is assumed to be horizontal, lengths and widths are measured in a hori
15、zontal plane, and heights are measured in a vertical plane. For the purposes of this British Standard, the following general definitions and the particular definitions in clauses 5, 6 and 7 apply. 3.1 passenger car a motor vehicle intended primarily for carrying persons and their goods and having a
16、maximum of nine seating places including the driving seat 3.2 Loading conditions 3.2.1 design load unless otherwise defined by the manufacturer, the kerb weight (including the spare wheel and any accessory equipment) plus 68 kg per passenger distributed as follows 3.2.2 kerb weight the complete vehi
17、cle kerb weight as defined in ISO 1176 3.2.3 maximum weight the maximum authorized total weight as defined in ISO 1176 3.3 zero X, Y and Z planes see BS AU 173 3.4 x-, y- and z- planes planes parallel to the zero X, Y and Z planes respectively Number of seating positions Number of passengers Distrib
18、ution 2 and 322 in the front seats 4 and 532 in the front seats 1 in the back seats 6 and 742 in the front seats 2 in the extreme back seats 8 and 952 in the front seats 3 in the extreme back seats or, when the rear row of seats has only 2 seating positions, 2 in that row and 1 in the second row fro
19、m the rear Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:49:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 179:1981 2 BSI 02-2000 3.5 fiducial marks see BS AU 173 3.6 R-point the manufacturers seat reference point which: a) establishes the rearmost nor
20、mal design position for each seating location as designated by the manufacturer, which includes consideration of all modes of adjustment available for the seat, as stipulated by the manufacturer; b) has coordinates established with respect to the vehicle structure; c) simulates the position of the p
21、ivot centre of the human torso and thigh. 3.7 A-point a point on the undepressed accelerator pedal 200 mm from the B-point, front 3.8 B-point the heel point as defined by the manufacturer 3.9 C-point the point of intersection, in the zero Y plane, of the bonnet and the windscreen 4 Dimensional codes
22、 The codes to be used for the various dimensions shall be as given in clauses 5, 6 and 7. 5 Three-dimensional reference system, fiducial marks and R-points No.DimensionDefinition Loading condition (see 3.2) CodeFigure 5.1 5.1.1 5.1.2 Zero Z plane to supporting surface: At front of vehicle At rear of
23、 vehicle The distance between the zero Z plane and the supporting surface, measured in a vertical plane passing through the centre of the front or rear wheel, as appropriate. Design load H136 H137 Figure 1 5.2 5.2.1 5.2.2 X coordinate of wheel centreline: Rear wheel Front wheel The distance from the
24、 zero X plane to the centreline of the front or rear wheel, as appropriate. NOTEIf the values of left and right wheel centreline coordinates are different, both dimensions are stated, separated by a dash, the first one corresponding to the left wheel. Design load L127 L128 Figure 1 5.3 5.3.1 5.3.2 5
25、.3.3 X coordinate of fiducial mark: No. 1 No. 2 No. 3 The distance from the zero X plane to the fiducial mark. Design load L54 L55 L56 Figure 1 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:49:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 179:1981 BSI
26、 02-20003 No.DimensionDefinition Loading condition (see 3.2) CodeFigure 5.4 5.4.1 5.4.2 5.4.3 Y coordinate of fiducial mark: No. 1 No. 2 No. 3 The distance from the zero Y plane to the fiducial mark. Design load W21 W22 W23 Figure 2 5.5 5.5.1 5.5.2 5.5.3 Z coordinate of fiducial mark: No. 1 No. 2 No
27、. 3 The distance from the zero Z plane to the fiducial mark. Design load H81 H82 H83 Figure 1 5.6Fiducial mark to supporting surface: The distance from the fiducial mark to the supporting surface. Figure 1 No. 1 No. 2 No. 3 Kerb weightH161 H162 H167 No. 1 No. 2 No. 3 Design loadH163 H164 H168 No. 1
28、No. 2 No. 3 Maximum weightH165 H166 H169 5.7 5.7.1 5.7.2 R-point to supporting surface: Front Rear The distance between the supporting surface and a plane parallel to it and passing through the R-point, front/rear. NOTEThe values for left and right R-points are stated, separated by a dash, the first
29、 one corresponding to the left seat. Design load H5 H10 Figure 3 5.8 5.8.1 5.8.2 X coordinate of R-point: Front Rear The distance from the zero X plane to the R-point, front/rear. NOTEThe values for left and right R-points are stated, separated by a dash, the first one corresponding to the drivers s
30、eat in the case of the R-point, front, and to the left seat in the case of the R-point, rear. L31 L35a Figure 3 5.9 5.9.1 5.9.2 Y coordinate of R-point: Front Rear The distance from the zero Y plane to the R-point, front/rear. NOTEThe values for left and right R-points are stated, separated by a das
31、h, the first one corresponding to the drivers seat in the case of the R-point, front, and to the left seat in the case of the R-point, rear. W20 W25a Figure 3 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 01:49:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS
32、AU 179:1981 4 BSI 02-2000 6 External dimensions No.DimensionDefinition Loading condition (see 3.2) CodeFigure 5.10 5.10.1 5.10.2 Z coordinate of R-point: Front Rear The distance from the zero Z plane to the R-point, front/rear. NOTEThe values for left and right R-points are stated, separated by a da
33、sh, the first one corresponding to the drivers seat in the case of the R-point, front, and to the left seat in the case of the R-point, rear. H70 H71a Figure 3 5.11Front wheel centreline to R-point, front The distance between two x-planes, one passing through the front wheel centreline, the other pa
34、ssing through the R-point, front. L114Figure 3 a When a vehicle is fitted with more than two rows of seats, this code is followed by the numerals 2, 3, etc. for the second, third, etc. rows respectively. No.DimensionDefinition Loading condition (see 3.2) CodeFigure 6.1Vehicle height, unladen The dis
35、tance between the supporting surface and a plane parallel to it and touching the highest point on the vehicle body. Kerb weightH100Figure 4 6.2Vehicle heightDesign loadH101Figure 4 6.3Vehicle height, laden Maximum weightH113Figure 4 6.4Vehicle height, unladen, with hinged lid of luggage compartment
36、open The distance between the supporting surface and the z-plane touching the uppermost part of the opened hinged lid of the luggage compartment. Kerb weightH110Figure 4 6.5Bonnet heightThe distance from the supporting surface to the C-point. Design loadH114Figure 4 6.6Lift over height, unladen The
37、distance, measured in the zero Y plane, between the luggage compartment lower opening and the supporting surface. Kerb weightH196Figure 4 6.7Lift over heightDesign loadH195Figure 4 6.8Upper body opening to supporting surface, front The distance between the trimmed front body opening and the supporti
38、ng surface at the R- point, front. Design loadH50Figure 4 6.9Upper body opening to supporting surface, rear The distance between the trimmed rear body opening and the supporting surface at a point 330 mm forward of the R-point, rear. Design loadH51Figure 4 Licensed Copy: London South Bank University
39、, London South Bank University, Sat Dec 09 01:49:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 179:1981 BSI 02-20005 No.DimensionDefinition Loading condition (see 3.2) CodeFigure 6.10Step height:The distance between the sill welt or sill plate (if fitted), at the centre of the lower opening of
40、 the front/rear door, and the supporting surface. Figure 4 6.10.1 6.10.2 Front Rear Design loadH115 H116 6.10.3 6.10.4 Front Rear Kerb weightH130 H131 6.11Approach angleThe greatest angle between the supporting surface and a plane tangential to the static loaded front wheel tyres, such that no point
41、 of the vehicle structure ahead of the front wheel centreline lies below the plane and that no part rigidly attached to the vehicle lies below the plane. Design loadH106Figure 4 6.12Approach angle, laden Maximum weightH117Figure 4 6.13Departure angleThe greatest angle between the supporting surface
42、and a plane tangential to the static loaded rear wheel types, such that no point of the vehicle structure behind the rear wheel centreline lies below the plane and that no part rigidly attached to the vehicle lies below the plane. Design loadH107Figure 4 6.14Departure angle, laden Maximum weightH118
43、Figure 4 6.15Ramp angleThe minimum acute angle between two planes, perpendicular to the longitudinal median plane of the vehicle, tangential, respectively, to the tyres of the front and the rear wheels, static loaded, and intersecting at a line touching the lower part of the vehicle, outside these w
44、heels. This angle defines the largest ramp over which the vehicle can move. Design loadH119Figure 4 6.16Ramp angle, ladenMaximum weightH147Figure 4 6.17Ground clearance, laden The distance between the ground and the lowest point of the centre part of the vehicle. The centre part is that part contain
45、ed between two planes parallel to and equidistant from the longitudinal median plane of the vehicle and separated by a distance which is 80 % of the least distance between points on the inner edges of the wheels on any one axle. Maximum weightH157Figure 4 Licensed Copy: London South Bank University,
46、 London South Bank University, Sat Dec 09 01:49:48 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS AU 179:1981 6 BSI 02-2000 No.DimensionDefinition Loading condition (see 3.2) CodeFigure 6.18WheelbaseThe distance between two x-planes passing through the centrelines of the front and rear wheels on the
47、same side of the vehicle. NOTEIf the dimensions of right and left wheelbases are different, both dimensions are stated, separated by a dash, the first one corresponding to the left wheels. Design loadL101Figure 4 6.19Vehicle lengthThe distance between two x-planes touching the foremost and rearmost
48、points of the vehicle. NOTEAll parts of the vehicle normally considered as standard fitments are contained between the two planes. Any part considered as an optional fitment (e.g. bumper overrider, towing hook) may be included, in which case the fact is noted. Design loadL103Figure 4 6.20Vehicle len
49、gth with hinged lid of luggage compartment open The distance between two x-planes, one touching the foremost point of the vehicle and the other touching the rearmost part of the opened hinged lid of the rear luggage compartment. Design loadL110Figure 4 6.21 6.21.1 6.21.2 Overhang: Front Rear The distance between two x-planes, one touching the foremost/rearmost point of the vehicle and the other passing through the centreline of the front/rear wheel. NOTE 1All parts of the front/rear of the vehicle normally considered as standard fitments a
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