Search

According to data on operation of primary crude oil distillation units, the content of light cuts in atmospheric resid can reach 17—20%, primarily due to deviation of the process parameters from the rated parameters. Optimization of operation of equipment and the process parameters in consideration of all factors determining the efficiency of fractionation will reduce the content of light cuts in straight–run atmospheric resid to 5—7% without additional capital outlays.

The IAE machine is designed as a closed-loop power system with two sets of gears, one consisting of the two test gears and the other the two gears closing the loop. Oil is fed to each gear pair by a separate oil pump and circulating system. The oil pump output can be adjusted from 0 to 3 liters/min. Test oil is fed to the contact zone of the gears through a nozzle with a diameter of 0.8 mm. A filter is installed in the lubrication system to remove wear products from the oil during the test.

1. Additives of the polar polymer type are effective multifunctional additives for kerosine and gas oil fuels. 2. The use of 0.05–0.1% polar polymer in fuels of various types will reduce sludge formation during storage, increase the cleanliness level and improve the operability of fuel-system equipment at high temperatures, contribute to fuel lubricity, and improve the condition of the cylinder-piston group of the engine.

A method for use in predicting the corrosion protection life of transmission components based on the establishment of a correlation between the level of transmission oil protective properties as determined under laboratory conditions and protective life of the component is proposed. Relationships that can be used to predict the storage life of automotive vehicle transmission components are obtained from calculations. Graphs are plotted for prediction of storage life of automotive vehicle transmission components under various conditions. The method developed here can also be used in formulating requirements for the level of protective properties of new oils or corrosion inhibitors.

1. Whether B-3V oil is oxidized under laboratory conditions or under service conditions, the changes in quality follow the same general laws. 2. The changes in B-3V oil in engine service are considerably slower than in oxidation under laboratory conditions. 3. In the oxidation of B-3V oil, the retention of the original level of antiwear [extreme-pressure] properties when much of the antiwear additive is consumed can be explained by chemical conversion of the additive to form new substances that are quite good in antiwear properties. 4. The use of the laboratory oxidation method should be considered as a promising approach in determining engine oil-change periods on a scientific basis.