SAE J257-2011
货车和客车制动额定马力要求

Brake Rating Horsepower Requirements Truck and Bus

被代替

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标准号

SAE J257-2011

发布

2011年

发布单位

美国机动车工程师协会

替代标准

SAE J257-2019

当前最新

SAE J257-2019

 

 

引用标准

SAE J880-1997

适用范围

The minimum performance values in this SAE Recommended Practice are applicable to vehicles with brake systems having typical service pressure ranges 0 to 16.6 MPa (0 to 2400 psi) hydraulic or 0 to 945 kPa (0 to 135 psi) air only. SAE J880 not only provides for determining maximum brake rating power capability, also permits verification of any desired or arbitrary level such as the requirement established herein. The determining criteria for deciding brake rating power capability are: a. cold brake stopping ability; b. fade as a result of brake power absorption; c. hot brake stopping ability following brake power absorption; d. brake system stability following brake power absorption; and e. functional and structural integrity of brake system following test. The purpose of this document is to establish a minimum Brake Rating Power (BRP) level for commercial vehicles tested in accordance with SAE J880.

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