Mercedes-Benz Metris BM 447, Инструкция по корпусу и оборудованию

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Mercedes-Benz Body & Equipment Guideline for Metris - BM 447, Version November 27, 2015.
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Please observe the revision notes compared to 09/18/2015 ! Only print out complete sections of the current version!
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10.1 Center of gravity
10 Calculations
10.1 Center of gravity
The overall height of the center of gravity (vehicle with
equipment/complete body but without load) must be
kept as low as possible.
The position of the center of gravity in the longitudinal
direction of the vehicle is specified with reference to a
vehicle axle.
The center of gravity height is specified with reference
to the center of the wheel hub or the road surface.
Mercedes-Benz recommends to have the position of
the center of gravity checked by a recognized and expe-
rienced testing institution, Engineering Company or the
upfitter’s own Engineering & Testing Group. Assistance
in this can be obtained from the relevant department,
see chapter 1.6 “Contact” (
e
Page 9).
If the center of gravity is determined by the upfitter, the
procedures described under 10.1.1 “Determination of
the center of gravity in the x-direction” (
e
Page 123)
and 10.1.2 “Determination of the center of gravity in
the z-direction” (
e
Page 125) must be followed and
services of qualified persons must be used so as to
achieve realistic and useful results.
10.1.1 Determination of the center of gravity
in the x-direction
CoG coordinates in x-direction
(front/rear axle load distribution)
Procedure:
• The vehicle should be weighed with its complete
equipment/body but without load.
• Inflate the tires to the tire pressure specified for the
maximum permissible axle load on each axle.
• Completely fill all fluid reservoirs (fuel tank, washer
fluid reservoir and, if installed, hydraulic tank, water
tank etc.).
• Shut off the engine on the scales, shift the trans-
mission to neutral and release the brakes.
• The vehicle must be parked horizontally on level
ground for weighing.
• First weigh the individual axle loads (front and rear
axle loads) and then the gross vehicle weight.
• Using these measurements, the position of the
center of gravity in the longitudinal direction of the
vehicle can be calculated using equations (3) and
(4).
• Use (2) to check the results from (3) and (4).