METHOD AND APPARATUS FOR THE OPTIMUM BLENDING OF LUBRICATING BASE OILS AND AN ADDITIVE

• US 3,826,904 A
• Filed: 10/04/1972
• Issued: 07/30/1974
• Est. Priority Date: 11/17/1970
• Status: Expired due to Term

• Current Assignee: John M. Leonard, John S. Lewis Jr
• Original Assignee: John M. Leonard, John S. Lewis Jr
• Inventors: Leonard, John M., Lewis, John S. Jr.
• Primary Examiner(s): Morrison, Malcolm A.
• Assistant Examiner(s): Wise, Edward J.
• Application Number:
  US05/295,060
• Time in Patent Office: 664 Days
• Field of Search: 235/151.1,151.12 444/1 252/59,65R 208/DIG.1
• US Class Current: 705/413
• CPC Class Codes: G01N 33/2888 Lubricating oil characteristics, e.g. deterioration lubricating properties G01N33/30
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: Y10S 208/01 Automatic control

Abstract

A method and apparatus for enabling the computation of a minimum cost blend of lubricating oil base stocks, wherein a viscosity index improver additive is included. System includes measurement of viscosity and related data at two separate concentrations of the additive where such concentrations are in the range from about 1 percent to about 10 percent of the additive with a given base oil. Data obtained are used in non-linear formulae to provide bases for calculating optimum blends to obtain particular specifications with minimum cost.

Claims

1. A system for controlling the blending of base oils and an additive, to achieve a desired blend having predetermined characteristics, being provided to blending means, comprising means for controlling the quantities of Base oils and additive being provided to the blending means to be blended in accordance with control signals, means for providing signals corresponding to the predetermined characteristics for a desired blend of base oils and the additive, means for providing signals corresponding to the economic values of the base oils, memory means for storing values of different combinations of the base oils and the additive quantities, means connected to the value signal means, to the memory means and to the characteristic signal means for selecting a desired combination of base oil and additive quantities in accordance with the economic value signals and the characteristic signals and providing signals corresponding thereto to the control means as control signals so as to achieve the desired blend of base oils and the additive.

2. A system as described in claim 1 in which the selecting means includes means connected to the memory means for controlling the memory means to provide signals corresponding to quantities of base oils &

additive for different combination thereof comprising different blends in an iterative manner, means connected to the memory means and to the value signal means for providing a signal corresponding to the cost of a combination of the quantities represented by the signals provided by the memory means in accordance with the economic value signals and the following equation;

3. A system as described in claim 2 in which the predetermined characteristics are the H value, the pour blend value PBV, and ASTM color blend value, the flash point blend value BV and the aniline point blend value and the determining means includes means receiving direct current voltages corresponding to terms h, a and b for the different base oils and l, associated with the following equations, and connected to the memory means for providing a signal corresponding to H for a present combination of base oils quantities in accordance with the following equation: