1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS M ISO 9112 KS M ISO 9112:2012 2012 12 18 http:/www.kats.go.krKS M ISO 9112:2012 : ( ) ( ) ( ) : (http:/www.standard.go.kr) : :2002 12 30 :2012 12 18 2012-0728 : : ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS M ISO 9112:2012 i ii 1 1 2 1 3 .1 4 (drum
2、) 2 4.1 .2 4.2 .2 4.3 .2 4.4 2 4.5 .3 4.6 3 4.7 3 4.8 .3 4.9 .4 5 .4 5.1 .4 5.2 4 5.3 .4 5.4 4 5.5 .5 5.6 5 5.7 5 5.8 .6 5.9 .6 A( ) .8 9 KS M ISO 9112:2012 ii 2008 2 ISO 9112, Truck and bus tyres Methods of measuring tyre rolling circumference Loaded new tyres , . KS M ISO 9112:2012 Truck and bus t
3、yres Method of measuring tyre rolling circumference Loaded new tyres 1 (km) 2 . ( ) . . . . “ ” . 2 . . ( ) . KS M ISO 4209 1, ( ) 1: 3 . 3.1 (revolutions per unit distance) ( ) 1 km 3.2 (rolling circumference of tyre) ( ) 1 . KS M ISO 9112:2012 2 3.3 (reference speed) (delivered value) . 4 (drum) 4
4、.1 ( ) . . . 4.2 4.2.1 1.7 m , (holding) . . 4.2.2 . , . . 4.2.3 . 4.3 25 . 20 30 . . 4.4 4.4.1 122 , K M 80 km/h , F J 60 km/h . “ 55 mph/88 km/h” “ 50 mph/80 km/h” , 60 km/h . , (30 130) km/h , . 4.4.2 121 KS M ISO 9112:2012 3 , 80 km/h . . , (30 130) km/h , . 4.5 (impulses) (Ni) 10 . 1 000 . 4.6
5、4.6.1 85 % . 4.6.2 A . 4.6.3 , . . 4.7 . , , . 4.8 4.8.1 , . 1.7 m 1 60 km/h 80 km/h , 4.6.1 4.6.3 4.4 . 4.8.2 , (break-in) . 4.8.3 6 , (stand) . 4.8.4 4.6.3 . 10 , 4.6.1 . KS M ISO 9112:2012 4 4.8.5 (warm-up) 90 . , , . . 4.8.6 T ( ) . T 1 000 . 4.9 Cr(: mm) . Cr 2(Nd / Nt)R Nd: Nt: R : (mm) 5 5.1
6、, , ( ) . 5.2 . 1 % . 500 m , 5.5 . (m) 0.1 % . 5.3 (5 30) . . 3 m/s . 5.4 5.4.1 122 K M (802) km/h , F J (602) km/h . “ 55 mph/88 km/h” “ 50 mph/80 km/h” , (602) km/h . KS M ISO 9112:2012 5 5.4.2 121 (802) km/h . . 5.5 16 . 0.1 % . 5.6 5.6.1 . 2 . (drive-shaft) , . 4 , . . 5.6.2 2 % , 85 %( 85 %) .
7、 . , . . 5.7 5.7.1 , , 0.5 % . , . KS M ISO 4209 1 . 5.7.2 KS M ISO 9112:2012 6 ( ) . 5.7.3 . , . 5.7.4 5.6.2 5.7.2 , 1 60 km/h 80 km/h . 10 % . 5.8 5.8.1 5.7.4 , 3 . , . 5.8.2 5.7.2 . 5.6.2 . 5.8.3 (warm-up) 90 . , . . 5.8.4 5.2 5.4 . . , , (steering) . 5.8.5 ( ) . 5.8.6 2 . 5.8.7 0.2 % , 0.2 % 2 .
8、 5.9 5.9.1 5.8.7 8 ( , 4 ) . KS M ISO 9112:2012 7 8 . (5.9.2 ) (5.9.3 ) . 5.9.2 ( ) . (km) . (N / L )103 N : L : (m) 5.9.3 . (mm) . (L / N )103KS M ISO 9112:2012 8 A ( ) A.1 , . , . A.2 A.2.1 , 5 mrad . A.2.2 (camber angle) 10 mrad . A.2.3 (slip angle) 3 mrad . A.3 (perturbations) , . : 100 N : 5 kP
9、a (surface velocity): 1 km/h : 1 mm KS M ISO 9112:2012 9 1 KS M ISO 4223 1, 1: 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS M ISO 9112:2012 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Truck and bus tyresMethod of measuring tyre rolling circumference Loaded new tyres ICS 83.160.10
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