SAE J 1540-2000
手动传动效率和寄生损耗测量

Manual Transmission Efficiency and Parasitic Loss Measurement


 

 

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标准号
SAE J 1540-2000
发布日期
2000年11月01日
实施日期
2000年11月01日
废止日期
中国标准分类号
T21
国际标准分类号
43.040.50
发布单位
US-SAE
代替标准
SAE J 1540-2012
适用范围
Because of the intense focus on fuel economy and fuel emission standards, it has become imperative to optimize vehicle drivetrains. In light of this, component efficiencies have become an important factor in the drivetrain decision-making process. It has therefore become necessary to develop a universal standard to judge transmission efficiency. This SAE Recommended Practice specifies a test procedure which maps torque transmittal efficiency and parasitic losses for manual transmissions. The application of this document is intended for manual transmissions used in light (class 4) through heavy truck applications with both simple and compound ratio structures. The document is separated into two parts. The first compares input and output torque throughout a specified input speed range in order to determine the overall transmission efficiency. This test is used to evaluate all forward gears; testing in reverse is optional. The second procedure measures parasitic losses experienced at zero output torque over a range of operating speeds. A procedure for further reduction of this data into a l




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