A decrease in the flash point of diesel engine lube oil indicates the lube oil has become （）.
举一反三
- Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?（） A: Water discharging from the water outlet of the lube oil purifier B: Fuel oil discharging from the water outlet of the lube oil purifier C: Lube oil discharging from the water outlet of the lube oil purifier D: A change in the lube oil viscosity
- Before starting a diesel engine that has an engine driven lube oil pump， the engineer should （）.
- For a main diesel engine the lube oil in the bearings is drawn from （）， usually located in the bedplate.
- The temperature difference between the inlet and outlet temperature of the lube oil cooler in the lubricating system for the diesel engine is generally between （）.
- When fuel enters the crankcase of a diesel engine, it （） A: dilutes the lube oil and reduces its viscosity B: forms sulfuric acid in the lube oil C: causes pitting and failure of the bearings D: causes sludge deposits on valve stem