狭小空间里的扭矩测量
Torque Measurement in a Tight Space

       在马萨诸塞州沃尔瑟姆的Tecogen / Ilios Dynamics公司进行发动机耐久性试验， 他们需要在狭小空间中进行扭矩测试。他们正在开发CHP的新型发动机平台，这需要进行5000小时的耐久性测试。这个平台是同时使用Gates同步定时皮带驱动发电机和制冷压缩机。

       Tecogen / Ilios Dynamics in Waltham, MA, needed a way to measure torque in a tight space during an engine endurance test. They are developing a new engine platform for Combined Heat and Power (CHP) which requires a 5000 hour endurance test. This engine is driving a generator and refri2geration compressor using a Gates synchronous timing belt.

      在测试台上，发动机通过驱动滑轮和一个同步正时皮带在侧面进行加载，因此在这种结构中使用传统的扭矩仪是不可行的。

       In the test cell, the engine is side loaded via drive sheaves and a synchronous timing belt, so using a traditional torque meter in the shaft-to-shaft configuration was not feasible.

      发动机与皮带轮之间只暴露出一小段传动轴，安装空间非常有限，这对扭矩传感器的安装及测试提出挑战。这种情况下TorqueTrak 10K是客户的最佳选择-应变片可以直接安装在轴上，发射器和电池可以安装在皮带轮上。当这三个组件一起旋转时，实时扭矩数据可以被发送到附近的接收机中。

       The challenge was the limited space available for the torque sensor, the small length of exposed shaft between the engine and the pulley. The TorqueTrak 10K was the perfect fit. The strain gage was installed on the shaft itself and the Transmitter and battery were mounted to the pulley. All three components rotated together, transmitting live torque data to the nearby Receiver.

      使用皮带传动,是因为皮带能改变发动机和发电机/压缩机之间的传动比率。他们使用一个高效率的水加热器，根据需求调节水温，并安装一些滑轮让发动机在节气门全开（WOT）的状态下以最高的效率运行。

       The reason they used a belt drive is that it allows them to change drive ratios between the engine and generator/compressor. They are using the engine in a high efficiency water heater so depending upon desired water temperature for the customer site (i.e. 120, 140, 160, etc) they will install certain pulleys to allow the engine to run at wide open throttle (WOT) for maximum efficiency.

      如果你遇到具有挑战性的扭矩和功率测量应用案例，我们将帮助您找到创造性的解决方案。欢迎大家与我们联系寻求帮助！
       If you have a challenging application for Torque & Power measurement, we‘ll help you find the creative solution. Please do not hesitate to contact our office for assistance.

      如果您有好的TorqueTrak应用或成功案例，也愿意与大家在这里分享，请发给我们.谢谢.
       If you have a good application or success story involving the TorqueTrak instruments that you would like to share in this newsletter, please send it to me for consideration. Thank you.

Bob Holden 
Sales Manager

      在这种情况下的发动机效率通过燃料输入和扭矩输出直接计算出来。该测试的测试结果可以和那些在专业的实验室中进行的同类测试相媲美。

      本次测试由加州能源委员会赞助

       Engine efficiency, in this case, is calculated directly from fuel input and torque output. The engine efficiency results from this test matched those of an independent laboratory performing a comparable test.

      This test was funded by the California Energy Commission (CEC).