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    • 64. 发明授权
    • Portable demonstration apparatus and method for the comparison of lubricants and/or lubricant additives
    • 用于比较润滑剂和/或润滑剂添加剂的便携式演示装置和方法
    • US07740483B2
    • 2010-06-22
    • US11259590
    • 2005-10-26
    • William P. TaylorKathleen O. Havelka
    • William P. TaylorKathleen O. Havelka
    • G09B25/00
    • G01N11/14
    • A portable apparatus and method for demonstrating different characteristics of different fluids that includes different fluid sumps or chambers for receiving samples of the different fluids. A test shaft having different portions that are immersed in the different fluid samples in the chambers is driven by an electric drive motor at a substantially constant speed while substantially the same amount of friction or force is applied to the different portions of the test shaft at different times to increase the resistance presented to the drive motor. The additional amount of current drawn or power absorbed by the motor or strain induced in the motor drive shaft during the application of such friction or force to the different portions of the test shaft is monitored and compared to provide a comparison of the friction or power loss characteristics of the different fluid samples.
    • 用于展示不同流体的不同特性的便携式装置和方法,其包括用于接收不同流体的样品的不同流体池或室。 具有浸没在室中的不同流体样品中的不同部分的测试轴由电动驱动马达以基本上恒定的速度驱动,同时基本上相同数量的摩擦力或力在不同的试验轴的不同部分施加 次增加驱动电机的阻力。 监测和比较在将这种摩擦力或力施加到测试轴的不同部分时在马达驱动轴中感应的马达或应变吸收的额外电流量或功率,以提供摩擦或功率损耗的比较 不同流体样品的特性。