FMVSS 571.116 Standard No. 116 Motor vehicle brake fluids
|
ID： |
D44FE723C2694A26AD142C8F0367A025 |
|
文件大小(MB)： |
0.16 |
|
页数： |
23 |
|
文件格式： |
|
|
日期： |
2008-8-25 |
|
购买： |
文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
334,§ 571.115 49 CFR Ch. V (10–1–02 Edition),§ 571.115 [Reserved],§ 571.116 Standard No. 116; Motor vehicle,brake fluids.,S1. Scope. This standard specifies requirements,for fluids for use in hydraulic,brake systems of motor vehicles,containers for these fluids, and labeling,of the containers.,S2. Purpose. The purpose of this,standard is to reduce failures in the hydraulic,braking systems of motor vehicles,which may occur because of the,manufacture or use of improper or contaminated,fluid.,S3. Application. This standard applies,to all fluid for use in hydraulic brake,systems of motor vehicles. In addition,S5.3 applies to passenger cars, multipurpose,passenger vehicles, trucks,buses, trailers, and motorcycles.,S4. Definitions.,Blister means a cavity or sac on the,surface of a brake cup.,Brake fluid means a liquid designed,for use in a motor vehicle hydraulic,brake system in which it will contact,elastomeric components made of styrene,and butadiene rubber (SBR),ethylene and propylene rubber (EPR),polychloroprene (CR) brake hose inner,tube stock or natural rubber (NR).,Chipping means a condition in which,small pieces are missing from the outer,surface of a brake cup.,Duplicate samples means two samples,of brake fluid taken from a single,packaged lot and tested simultaneously.,Hydraulic system mineral oil means a,mineral-oil-based fluid designed for use,in motor vehicle hydraulic brake systems,in which the fluid is not in contact,with components made of SBR,EPR or NR.,Packager means any person who fills,containers with brake fluid that are,subsequently distributed for retail sale.,Packaged lot is that quantity of brake,fluid shipped by the manufacturer to,the packager in a single container, or,that quantity of brake fluid manufactured,by a single plant run of 24 hours,or less, through the same processing,equipment and with no change in ingredients.,Scuffing means a visible erosion of a,portion of the outer surface of a brake,cup.,A silicone base brake fluid (SBBF) is a,brake fluid which consists of not less,than 70 percent by weight of a diorgano,polysiloxane.,Sloughing means degradation of a,brake cup as evidenced by the presence,of carbon black loosely held on the,brake cup surface, such that a visible,black streak is produced when the cup,with a 500±10 gram deadweight on it, is,drawn base down over a sheet of white,bond paper placed on a firm flat surface.,Stickiness means a condition on the,surface of a brake cup such that fibers,will be pulled from a wad of U.S.P. absorbent,cotton when it is drawn across,the surface.,S5. Requirements. This section specifies,performance requirements for DOT,3, DOT 4 and DOT 5 brake fluids; requirements,for brake fluid certification;,and requirements for container,sealing, labeling and color coding for,brake fluids and hydraulic system mineral,oils. Where a range of tolerances is,specified, the brake fluid shall meet,the requirements at all points within,the range.,S5.1 Brake fluid. When tested in accordance,with S6, brake fluids shall,meet the following requirements:,S5.1.1 Equilibrium reflux boiling point,(ERBP). When brake fluid is tested according,to S6.1, the ERBP shall not be,less than the following value for the,grade indicated:,(a) DOT 3: 205 °C. (401 °F.).,(b) DOT 4: 230 °C. (446 °F.).,(c) DOT 5: 260 °C. (500 °F.).,S5.1.2 Wet ERBP. When brake fluid,is tested according to S6.2, the wet,ERBP shall not be less than the following,value for the grade indicated:,(a) DOT 3: 140 °C. (284 °F.).,(b) DOT 4: 155 °C. (311 °F.).,(c) DOT 5: 1 180 °C. (356 °F.).,S5.1.3. Kinematic viscosities. When,brake fluid is tested according to S6.3,the kinematic viscosities in square,millimeters per second at stated temperatures,shall be neither less than 1.5,mm2/s at 100 °C. (212 °F.) nor more than,the following maximum value for the,grade indicated:,(a) DOT 3: 1,500 mm2/s at minus 40 °C.,(minus 40 °F.).,(b) DOT 4: 1,800 mm2/s at minus 40 °C.,(minus 40 °F.).,VerDate 0ct<31>2002 14:20 Dec 13, 2002 Jkt 197204 PO 00000 Frm 00334 Fmt 8010 Sfmt 8002 Y:\SGML\197204T.XXX 197204T,335,Nat’l Highway Traffic Safety Admin., DOT § 571.116,(c) DOT 5: 900 mm2/s at minus 40 °C.,(minus 40 °F.).,S5.1.4 pH value. When brake fluid,except DOT 5 SBBF, is tested according,to S6.4, the pH value shall not be less,than 7.0 nor more than 11.5.,S5.1.5 Brake fluid stability.,S5.1.5.1 High-temperature stability.,When brake fluid is tested according to,S6.5.3 the ERBP shall not change by,more than 3 °C. (5.4 °F.) plus 0.05° for,each degree that the ERBP of the fluid,exceeds 225 °C. (437 °F.).,S5.1.5.2 Chemical stability. When,brake fluid, except DOT 5 SBBF, is,tested according to S6.5.4, t……
……