JASO E109-1994 英文版 汽车多楔带.pdf

JAPANESE AUTOMOBILE STANDARD
JASO E 109-94
Automotive V-ribbed belts
1. Scope
(2) Pitch zone
This standard specifies the V-ribbed belts (here
A zone in a belt where any extension and
inafter referred to as"belts,") for driving the
retraction are not present when it is bent. It
cooling fans, alternators, water pumps, com
is used to calculate the speed ratio of the
pressors, power steering pumps, super char
gers, etc. of automobile internal combustion
(3)Normal bending
engines
A state of a belt in which the belt is placed
Remarks
with its rib section faced inward
The applicable standards to thisstandard are as
(4) Reverse bending
follows
A state of a belt in which the belt is placed
JIS B 0601 Definitions and designation of sur
with its rib section faced outward
JIS Z 8401 Rules for rounding off of numerical
values
3. Classification
JASO E 110 Test method for toothed bets for The belt is of PK type only
JASO E 111 Shape and dimension of V-ribbed
4. Quality
pulley grooves for automobiles
4.1 Performance
To test the performance of the belt, a test com
2、 Definitions
prising normal bending only
Definitions of main terms used in this standard
are as follows
(The test conditions are listed in A1) or a test
(1) Effective length
including reverse bending The test conditions
The length of a line circumscribing a beft are listed in B1)as indicated in paragraph 9.2
e effective circumfer
shall be selected according to the pulley layout
measuring pulley when the belt is placed in which the belt is used. As the result of the
onto two measuring pulleys with a specified test, any damages as shown in Fig. 1 must not
produced, and the second re-tensioning
not be required
Fit
6心
6
655
°86g6
Belt break down
Rib
chunk
Rib rubbr
(at one or more place)
(Crack reached to
tension member)
4.2 Tensie characteristics
9. 3, and the tensile strength and elongation
The test of the belt for tensile- characteristics
must meet the requirements in Table 1
shall be carried out on the method in paragraph