Diesel engine oil quantity control device

The utility model discloses a diesel engine oil quality control device, which solves problems that diesel engines are unsmooth in starting, high in fuel consumption during operation and severe in emission and pollution. The technical scheme includes that the diesel engine oil quality control device comprises a calibrating rod, a casing, a calibrating spring seat, a starting spring, a calibrating spring and an adjusting screw-plug, one end of the calibrating rod matches with a small hole of the casing, the adjusting screw-plug is provided with a step, external thread on the end surface in the adjusting screw-plug is connected with internal thread at one end of a big hole of the casing, the starting spring is arranged between the calibrating spring seat and the adjusting screw-plug, the calibrating spring is arranged between the inner end face of the adjusting screw-plug and a boss of the calibrating rod, the starting spring and the calibrating spring are sleeved on the calibrating rod loosely, the adjusting sc