JASO C448-1980 乘用车——钳盘式制动器台架试验规程.pdf

JAPANESE AUTOMOBILE STANDARD
JASO C448-80
Disc Brake Caliper Bench Test Procedure -Passenger Car
1. Scope
4. Common Items
ice brakt
Each Element of Braking Dev
disc brake calip
referred to as caliper assemblies)of passenger cars
The condition of each element of the braking devices
owever, dynamometer tests on frictional charac
upon testing shall be as specified in JASO C 446
teristics are not included
General Rules of Brake of Automobiles and Motor
cycles). 5.3 (hereafter referred to as proper products)
nu
]are inaccordance with the
ernationa
System of Units Sl,, and given for reference only
4.2 Test Equipment
nd instruments to
shall be as follows, unless otherwise specified
2, Purpose
(1) Manual pressure actuating equipment
to establish a unif
A pressure actuating equipment is to be used in
test procedure for caliper assembly service brake bench
ich the pressure to the caliper
tests
assembly is applied manually, and it shall b
apply
cm2 13.72 Mpal or more to the caliper assembly
3. Definitions
per cycle (see Figure 1
The main terms as used herein are defined as follows
Remark一 As indicated
(1 Fluid displacement required: The brake fluid
convenient to construct the equipment
a manner that the lever to bl
quantity required to bring up to the prescribed
fluid pressure in the cylinder bore of caliper
from the
tuating handre
it the rota
(2) Automatic pressure actuating equipment
lined after the telease of
brake fluid pressue
a test in which the pressure to the calip
(3 Pad half-worn condition
dition where
assembly is repeatedly and automatically
f the friction materials exciud
be capable of applying a
the pad has
icm2(13.72M
It of a
(4 Pad 2/3-worn conditian: A condition where
(3) Fitting jig
e thickness of the friction materials exclud
ng the backing plate of the pad has b
2/3
that the location of the caliper, the fitting
the equivale
he Case o"
(5) Pad full-worn condition: A condition where
actual on-vehicle conditions (see Figure 3)
the friction materials has worn fully excluding
the backing plate of the pad.
Reference Standards:
ISO 4930 Road vehicies-elastomeric seals for
JIS Z 2371 Methods of Salt Spray Testing
using a. non-petroleum base hydraulic
JASO C 419-72 Service Brake Structural Integrity
brake fluid (Service temperature 150 C
namometer Test Procedu
Car
Related Standard
JASO C 441-77 Service Brake Structural Durability
Bench Test Procedure
J IS D 0203 Method of Moisture Rain and Spray
JASO C446-79 General Rules of Brake of Auto
Test for Automobile Parts
mobiles and Motorcycles
JIS D 1601 Vibratile Testing Method for Automobile
Part
Corresponding International Standard