METHOD OF DIESEL LUBRICANT QUALITY CONTROL Russian patent published in 2014 - IPC F01M11/10 

FIELD: engines and pumps.

SUBSTANCE: proposed method comprises the steps that follow. Definition of first (Z_d) and second (Z_p) engine operation areas corresponding to first increased risk of oil dilution with fuel and second risk of carbon particles availability in oil, respectively. Selection of reference distance D_ref. Calculation at said distance corrected with made one of percentage of distance made at first and /or second said areas. Note here that said percentage is compared with first (C_d) and second critical levels associated with said first and second risks. Generation of alarm signal when one of said critical levels crosses alarm threshold corresponding to risk under analysis.

EFFECT: retention of lubricant quality.

14 cl, 1 dwg