Operational reliability of motors and the wearing property of additives

Abstract

The following conclusions were drawn on the basis of the experimental material obtained on testing eight oil samples with different additives on the YaMZ-236 diesel motor. 1. The wearing property of additives, which is determined as the rate of their consumption or the extent of their consumption after a given period of operation of the motor, has no direct effect on the condition of the motor particularly its impurity content. 2. Of decisive influence for the impurity content of motor parts is the distribution of the consumed additives between two components-the burnt-out part of the additives and their decomposition products accumulated in the motor. The greater the burning of additives, the cleaner are the motor parts. 3. The process of additive consumption is closely associated with the process of burning of oil. Increased burning of oil does not at all mean increased burning of additives. On the other hand, tests with oil samples containing different additives prepared with the same base oil showed that with increased burning of oil the burning of additives decreases. Here the amount of decomposition products of additives accumulating in the motor increases accordingly. The entire initial amount of the additives in the burnt-out oil is always consumed. The quantitative distribution between the burning and the decomposition of consumed additives depends on their quality.