sentences:  Specifically, the cylinder pressures created under these high speed and low load conditions are often insufficient to prevent lube oil from being ingested into the combustion chamber.High levels of PM emissions are the result.Furthermore, we do not believe that these engines spend a significant portion of their operating time in this limited speed and torque range 
  
  In 2001, five separate lawsuits were filed against the US EPA by the Engine Manufacturers Association (EMA) and several individual trucking industry entities (such as International Truck and Engine Corporation).