US1628647A

US1628647A - Method of lubricating internal-combustion engines

Info

Publication number: US1628647A
Application number: US65697A
Authority: US
Inventors: Arman E Becker
Original assignee: Standard Development Co
Current assignee: Standard Development Co
Priority date: 1925-10-29
Filing date: 1925-10-29
Publication date: 1927-05-17
Anticipated expiration: 1944-05-17
Also published as: GB260602A

Description

Patented May 17, 1927. 1,628,647

UNITED STATES PATENT OFFICE.-

ARM'AN E. BECKER, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO STANDARD DEVELOP- KENT COMPANY, A CORPORATION OF DELAWARE.

METHOD OI LUBRICATING INTERNAL-COMBUSTION ENGINES- Jio Drawing. Application filed October 28,1925. Serial No. 65,697.

This invention relates to an improved fore justified by their increased length of method of lubricating internal-combustion service. The "percentage of soap comengines. In accordance with the invention, pounded with white oils or the like may be the crank-case of the engine is supplied with the same as above mentioned; 6 a hydrocarbon lubricant containing a small In preparing the oil-soap lubricant it is percentage of a saponified compound, espegenerally desirable to a ply h eat. This facially an alkali metal soap of a high fatty cilitates solution and o viates the tendene acid or acids of the soap to separate from the oil, a di The oil-soap lubricant, in a preferred culty which may be encountered in soluforin, comprises lubricating oil of good tions prepared by mixture at ordinar temgrade containing a sodium soap in effective perature. The process of forming t e oilamount less than 0.5% by weight of the oil. soap lubr1cant forms' no part of the present However, my'invention is not limited to pre- Invention, but is included in the subject matcise proportions of soap and oil, and any tor of my pending United States patent apcomposition having the desired viscosity and p a l n s lflfll N s. 593,906, filed October lubricating qualities 'at engine temperature ll. 1922, and 751,401, filed November 21, may be used. In general more than 0.5% of 1924- 1 soap will cause the formation of a gel at or- 1 have found by extensive tests under dinary temperatures with oils of viscosity fl IE IY n B condltlolls thatfhe high enough for best results in internal-com- Presence of a soa of the type described bustion engines. In cases where light lubri- 11 an Internal-00m ustion engine lubricant eating oils are satisfactory, higher percentha a marked beneficial elfect. The tendency ages of oap may be used without solidificato carbon fOImHtIOII upon the cylinder walls tion. Lubricating oil of about 285 to v 290 is gr a y r d R O IB- i H 0rknockseconds Saybolt viscosity at 100 F. containing in the engine is D m Z In'many ing about 0.15 to',O.25% of a sodium soap, cases removal of carbonalready formed has especially sodium oleate, gives excellent been effected by the use ofmy lubricating results. An intermediate percentage, say composition. Among oth a ge it 0.17%, has given a maximum benefit on exreduction of engine temperature and 1I1- tensive tests. creased horse-power result from the prac- It will be clear as 'the description proceeds, ic 1 H118 invention.

that the effect of the soap is not merely to Thewater which may be formed by conincrease the viscosity of the lubricating oil densation in the crank-case has no adverse nor merely to improve its lubricating prop-- ell ct upon the oil-soap lubricant. In fact, erties. In all cases I- prefer to use an oil in many cases Sm amounts of W ter, say having in itself characteristics adapting it up to 2 or 3%, appear to increase somewhat for advantageous use as an internal-comthe efliciency of the lubricant. bustion engine cylinder oil. My invention A further important advantage of the oilis based upon the discovery that the soap has soap composition is its action on the trans- .40 special functions, especially in connection, mission and brake bands of motor vehicles with parts liable to foulin b carbonaceous having a lanetary gear transmission. The

of my invention is the effect of thesoap'in face of the bands is substantia l prevented reducing friction on bearings and all movand the resulting objectionable chatterin 46 ing parts, and in permitting the desirable is minimized. In those cars having t e fluid film lubrication over a wider ran e planetary mechanism and bands in a case of speeds and loads for agiven feed of 011-. opening into the crank-case, the oil-soap lu In some cases I use a white oil or other bricant supplied to the crank-case will serve highly purified hydrocarbon voil of lubricatfor treatin the bands. The action on the 50 ing characteristics and containing a soap of bands may m in part a softenin or deglazthe type described. Such oils resist oxidaing effect, but I shall refer to it generally tion and other chemical changes much better herein as lubrication. than the cheaper lubricating oils of ordi- My invention is applicable to the lubricanary type, and the use of white oils is theretion of internal-combustion engines of all t g or gummy deposits. An incidental feature fouling with carbon or glazin of the sur- I ing supplying to surfaces tending to become fouled with carbonaceous or gummy deposits, a liquid composition consisting essentially of lubricating oil containing an alkali metal soap of a fatty acid in an effective amount less than 0.5% by Weight of the oil.

2. Method of lubricating internal-combustion engines, comprising supplying to the cylinder Walls of the engine a liquid composition consisting essentially of lubricating oil containing an alkali metal soap of a high fatty acid in an effective amount less than 0.5% by Weight of the oil.

3. Method of lubricating internal-combustion engines, comprising maintaining in the cf'ank-case of the engine a quantity of .a

liquid composition consisting essentially of lubricating oil containing an alkali metal soap of a high fatty acid in an effective amount less than 0.5% by Weight of the oil,

and supplying the same to the cylinder Walls of the engine.

l. Method of lubricating internal-combustion engines, comprising maintaining in the crank-case of the engine a quantity of a liquid composition consisting essentially of lubricating oil containing about 0.15 to 0.25% by Weight of a sodium oleate, and supplying said oil-soap lubricant to the cylinder walls of the engine.

5. Method of lubricating internal-combustion engines, comprising maintaining in the crank-case of the engine a quantity of a liquid composition consisting essentially of highly purified lubricating oil of the type of white oil and containing a soap in effective amount less than 0.5% by Weight of the oil, and supplying said oil-soap composition to the cylinder Walls of the engine.

(5. Method of lubricating internal-combustion engines, comprising maintaining in the crank-case of the engine a quantity of a liquid composition consisting essentially of highly purified lubricating oil of the type of white oil and containing a sodium soap of a high fatty acid in an eii'ective amount less than 0.5% by Weight of the oil, and supplying said oil-soap composition to the cylinder walls of the engine.

ARMAN l3. BECKER.