US1757838A

US1757838A - Liquid fuel

Info

Publication number: US1757838A
Application number: US714810A
Authority: US
Inventors: Carl O Johns
Original assignee: Standard Oil Development Co
Current assignee: Standard Oil Development Co
Priority date: 1924-05-21
Filing date: 1924-05-21
Publication date: 1930-05-06
Anticipated expiration: 1947-05-06

Description

. in the amount of agent required.

Patented Ma 6, 1930 UNITED. STATES CARL o. JOHNS, or ELIZABETH, NEW JERSEY, nssr'enon TO STANDARD OIL DEVELOP- PATENT OFFICE KENT COMPANY, A CORPORATION OF DELAWARE I LIQUID FUEL No Drawing.

This invention relates to motor fuels, and particularly motor fuels which it is desired shall be operable under relatively high "en'- this condition it has been proposed to add to such fuels a metallo-alkyl compound, particularly lead tetraethyl. While effective in reducing the knocking propensities of the fuel, objection is made in some instances to the presence of as much lead as is involved In accordance with the present-invention. the amount of lead or other metallo-alkyl compound necessary to accomplish the desired object can be minimized, it being found that in adding lead tetraethyl to gasoline for instance, the knocking propensity of the gasoline is reduced not in direct proportion with increasing increments of added lead tetraethyl but the first cubic centimeter of lead compound for instance per gallon of gasoline is the most effective While the result of additional increments of the anti-knock agent is successively less. In preparing a motor fuel, I employ a small amount of lead tetraethyl sufiicient in quantity to produce the first and greatest efiect but instead of addin further increments of lead tetraethyl to equal the total'proportion of the agent heretofore customarily used, I further modify the petroleum hydrocarbons-by the addition Application filed May 21,

1924. Serial No. 714,810.

.the quantity'of anti-knock agent needed in a gasoline to produce afuel that may be used without detonation in internal combustion engines having relatively high compressions.

.I claim: I

1. A motor fuel which comprises a mixture of about 95% of gasoline and 5% of ethyl alcohol, and lead tetraethyl in the amount of about 1 cc. per gallon of the mixture. 2. A motor fuel which comprises a mixture of 90-97% of gasoline and 23-10% of an alcohol with a boiling point within the gas-- oline range, and lead tetraethyl in the amount of 12 cc. per gallon of the mixture. 3. A motor fuel which comprises a mixture of gasoline with not to exceed 10% of an I alcohol with a boiling point within the gasoline range, and lead" tetraethyl in amount not to exceed 2 cc. per gallon of the mixture.

4. A motor fuel which comprises a mixture of petroleum hydrocarbons with a relatively small proportion of analcohol'boiling with in the range of said petroleum hydrocarbons, and lead tetraethyl inamount not to exceed 1 2 cc. per gallon of the mixture. g a 5. A motor fuel which comprises petroleum hydrocarbons, an alcohol boiling within the range of said hydrocarbons in relatively small proportion, knock agent.

4 CARL O. JOHNS.

of a small proportion ,of an alcohol; as for example ethyl alcohol, methyl alcohol, or

isopropyl alcohol or mixtures thereof. The

alcohol may be added in amount of 13-10% position comprises a mixtureof about 9 5% v of gasoline and 5% of ethyl alcohol, and-1V cc.,of lead tetraethyl per gallon-of the mixture'. By using-my preferred type of modified fuel, I am able to materially decrease and a metallo-alkyl anti- A iou