公开(公告)号：US06253601B1

公开(公告)日：2001-07-03

申请号：US09221625

申请日：1998-12-28

申请人： Jerry C. Wang ,  Shawn Douglas Whitacre ,  Matthew L. Schneider ,  Dean Harlan Dringenburg

发明人： Jerry C. Wang ,  Shawn Douglas Whitacre ,  Matthew L. Schneider ,  Dean Harlan Dringenburg

IPC分类号： G01M1500

CPC分类号： F01M11/10 ,  F01M2011/14 ,  F01M2011/1466 ,  F01M2011/1473 ,  F01M2011/1493

摘要： A system and method for indicating when the oil of an engine needs to be changed. The system includes measuring engine parameters such as engine temperature, fueling rate, engine speed, and engine load. At timed intervals, soot generation, viscosity increase, and total base number (TBN) depletion are estimated through a calculation for that time interval. The estimated values from the calculations are accumulated in separate loops. Once the accumulation of soot generation, oil viscosity increase, or TBN depletion reaches a predetermined magnitude for that respective oil property, then an indication or signal is provided to indicate to the engine operator that the oil needs changing. The system is supplemented with real time sensors such as an oil level sensor, a soot sensor, and a viscosity sensor which provide a back up for the calculation of estimates and also prevent catastrophic engine conditions from not being detected through electronic calculation of estimates. The system and method also can correct for the accumulation of oil consumption caused by evaporation of oil or leakage of oil. The algorithms used in the calculations can account for oil quality and fuel sulfur as well as the configuration of the engine, to allow the engine to be used in different geographic locations.

摘要翻译： 一种用于指示何时需要改变发动机油的系统和方法。 该系统包括测量发动机参数，如发动机温度，加油速率，发动机转速和发动机负荷。 按照时间间隔，通过计算该时间间隔估计烟炱产生，粘度增加和总碱值（TBN）耗尽。 来自计算的估计值累积在单独的循环中。 一旦烟灰产生的累积，油粘度增加或TBN耗尽达到相应油性质的预定量级，则提供指示或信号以向发动机操作者指示油需要改变。 该系统补充有实时传感器，例如油位传感器，烟尘传感器和粘度传感器，其提供用于估计的计算的备份，并且还通过电子计算估计来防止未检测到灾难性的发动机状况。 该系统和方法也可以纠正油蒸发或油渗漏引起的油耗累积。 计算中使用的算法可以解释油质和燃料硫以及发动机的配置，以允许发动机在不同的地理位置使用。