GB/T 5359.3-1996 Terminology of motorcycles and mopeds Dimensions of two-wheeled vehicles GB/T5359.3-1996 Standard download decompression password: www.bzxz.net

Definition".
National Standard of the People's Republic of China
Terms for motorcycles and mopeds
Dimensions of vehicle with two wheels
Term for motorcycles and mopedsDimensions of vehicle with two wheels This standard adopts ISO6725-1981 "Road vehicles - 1 Subject content and scope of application" GB/T 5359.3-1996 GB4731 841) GB 5359.285 - Dimensions of two-wheeled mopeds and motorcycles This standard specifies the terms related to the dimensions of two-wheeled motorcycles and two-wheeled mopeds. Terms and definitions This standard applies to two-wheeled motorcycles and two-wheeled mopeds as specified in GB/T5359.1 "Terms for motorcycles and mopeds - Vehicle types".
2 Reference standards
Vehicle types
GB/T5359.1 Terminology for motorcycles and mopeds 3 General
Unless otherwise specified, the following provisions shall be met: a. The vehicle's support surface is horizontal, the length and width are measured in the horizontal plane, and the height is measured in the vertical plane; b. The vehicle mass is the factory-determined maximum total mass; c. The tires are inflated to a pressure corresponding to the factory-determined maximum total mass; d. The vehicle is stationary and vertical, the engine is not running, and the wheels are in a straight-line driving position; Note: The content of this article does not apply to Articles 5.14 and 5.15. e. The vehicle is a new vehicle equipped by the manufacturer according to standards; f. The wheels of the vehicle are all placed on the support surface; g. "Wheel center plane" refers to a plane equidistant from the inner side of the rim flange, h. "Wheel center" refers to the intersection of the wheel center plane and the wheel rotation axis. 4 Reference plane and longitudinal center plane
4.1 Reference plane
The reference plane is the X, Y, and Z planes in the three-dimensional orthogonal coordinate system (see Figure 1). Among them: Z - horizontal plane (support surface);
Y--vertical plane;
X--plane perpendicular to Y and Z.
Note: 1) This standard replaces the "dimension part" in GB4731-84. Approved by the State Bureau of Technical Supervision on July 23, 1996 and implemented on March 1, 1997
4.2 Longitudinal center plane
GB/T5359.3--1996
The plane coincident with the center plane of the rear wheels of the vehicle. 5 Terminology
5.1 Vehicle length length
The distance between two planes perpendicular to the longitudinal center plane, in contact with the front and rear ends of the vehicle respectively and parallel to the X plane (see Figure 2). Note: All fixed parts of the vehicle and front and rear protrusions (such as fenders, etc.) are between these two planes. Figure 2
5.2 Vehicle width vehiclewidth
The distance between two planes parallel to the longitudinal center plane, in contact with the two sides of the vehicle respectively (see Figure 3). Note: Except for the rearview mirror, all fixed parts and lateral protrusions of the vehicle are between these two planes. 54
5.3 Vehicle height vehicleheight
GB/T5359.3—1996
The distance between the horizontal plane in contact with the top of the vehicle and the supporting surface (see Figure 4). Note: Except for the rearview mirror, all fixed parts of the vehicle (such as fairing, etc.) are between these two planes. Figure 4
5.4 Wheelbase wheel base
The distance between two planes passing through the center of the wheel and parallel to the X plane (see Figure 5). Tian
5.5 Front overhang
The distance between the plane passing through the center of the front wheel and parallel to the X plane and the front end of the vehicle (including additional rigid parts) (see Figure 6). Figure 6
5.6 Rear overhang
GB/T 5359. 3—1996
The distance between the plane passing through the center of the rear wheel and parallel to the X plane and the rear end of the vehicle (including additional rigid parts) (see Figure 7). Figure 7
ground clearance
5.7 Ground clearance
The distance between the lowest point of the vehicle within the wheelbase, excluding wheels and mudguards, and the support surface (see Figure 8). Note: For light motorcycles equipped with kickstands, the kickstands are in the lowest position for use. Tian
5.8 Ramp angle
When the intersection of two planes perpendicular to the longitudinal center plane and tangent to the front and rear wheels of the vehicle touches the lower inner part of the vehicle wheelbase, the minimum angle between the two planes is the passing angle. This angle is the maximum slope angle that the vehicle can pass (see Figure 9). Note: For light motorcycles equipped with footrests, the footrest position is not considered. Figure 9
5.9 Approach angleapproachangle
The maximum angle between the plane perpendicular to the longitudinal center plane and tangent to the front wheel and the support surface. There are no vehicle parts or additional rigid parts of the vehicle within this angle (see Figure 10). Figure 10
departure angle
5.10 Departure angle
The maximum angle between the plane perpendicular to the longitudinal center plane and tangent to the rear wheel and the support surface. There are no vehicle parts or additional rigid parts of the vehicle within this angle (see Figure 11). Tai
5.11 Castor
The force and distance between the four points obtained by the plane passing through the axis of the steering column and perpendicular to the Y plane and the plane passing through the center of the front wheel and parallel to the X plane intersecting on the intersection of the Y plane and the Z plane (see Figure 12). Note: In the driving direction, when point p is before 9 o'clock, it is a positive value. When point p is after 9 o'clock, it is a negative value. Driving direction
Axis of steering column
5.12 Castor angle
The acute angle between the plane passing through the axis of the steering column and perpendicular to the Y plane and the plane passing through the center of the front wheel and parallel to the X plane (see Figure 13).
Direction of travel
Axis of steering column
GB/T5359.3-1996
5.13 Residual vertical wheel clearance residual vertical wheel clearance The vertical distance that the vehicle suspension moves relative to the wheel when the vehicle suspension is loaded from the position of the factory-determined maximum total mass to the position where it can no longer move in the vertical direction (see Figure 14). Figure 14
turning circle diameter
5.14 Turning circle diameter
The diameter of the circle tangent to the center plane of the front wheel on the support surface when the steering wheel is in the extreme position and the vehicle is running (see Figure 15). Note: Each vehicle has a left turning circle diameter and a right turning circle diameter. Figure 15
turning clearance circle diameters5.15 Turning clearance circle diameter
The diameter of the circle measured in accordance with the following provisions when the steering wheel is in the extreme position and the vehicle is running (see Figure 16). a. The diameter of the largest circle drawn by the outer side of the projection of all vehicle parts on the support surface; b. The diameter of the smallest circle drawn by the inner side of the projection of all vehicle parts on the support surface. Note: Each vehicle has a left turning channel circle diameter and a right turning channel circle diameter. Figure 16
5.16 Banking angle
GB/T5359.3—1996
The maximum angle between the plane tangent to the side of the front and rear wheels of a two-wheeled vehicle and perpendicular to the X plane and the support surface. There are no vehicle parts or additional rigid parts of the vehicle within this angle (a light motorcycle equipped with a footrest. The position of the footrest is not considered) (see Figure 17). If the front and rear wheels are different, take the smaller angle. Note: Each vehicle has a left banking angle and a right banking angle. Figure 17
Approach angle
Ground clearance
Departure angle
approach angle
banking angle
castor
castor angle
departure angle
GB/T 5359.3--1996
Appendix A
Chinese Index
(Reference)
Front overhang
Front overhang angle
Tilt angle
Residual vertical wheel clearance
Through angle
Turning circle diameter:bzxz.net
Turning channel circle diameter
Appendix B
English Index
(Reference)
Front overhang
Ground clearance
Rear overhang
Ramp angle
Residual vertical wheel clearanceTurning circle diameter
Turning clearance circle diameterVehicle length
Vehicle width
Vehicle height
Wheel base
Additional Notes:
GB/T5359.3—1996
This standard was proposed by China National Automotive Industry Corporation. This standard is under the jurisdiction of the Motorcycle Sub-Technical Committee of the National Automobile Standardization Technical Committee. This standard was drafted by Nanchang Aircraft Manufacturing Company. The main drafters of this standard are Yang Song, Xu Xisheng, Bei Shengqiao and Wu Meiying. 5.5
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