US1924722A - Method and means for removing carbon deposits - Google Patents

Method and means for removing carbon deposits Download PDF

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Publication number
US1924722A
US1924722A US389089A US38908929A US1924722A US 1924722 A US1924722 A US 1924722A US 389089 A US389089 A US 389089A US 38908929 A US38908929 A US 38908929A US 1924722 A US1924722 A US 1924722A
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United States
Prior art keywords
carbon
carbon deposits
deposit
deposits
removing carbon
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US389089A
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Wheeler G Lovell
Thomas A Boyd
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General Motors Research Corp
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General Motors Research Corp
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Priority to US389089A priority Critical patent/US1924722A/en
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Publication of US1924722A publication Critical patent/US1924722A/en
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/06—Use of additives to fuels or fires for particular purposes for facilitating soot removal

Definitions

  • the process of removing carbon deposits ing carbon deposits, and that the best method of from the combustion chamber of an internal using them is to apply them to carbon coated combustion engine which comprises heating the parts which have been heated preferably to a coated parts to above 150 F., applying to the temperature above 150 F., the optimum condicarbon deposit an aliphatic amide which removes 15 tions for water cooled engines being at approxivarnish, benzol and alcohol, and removing the mately the boiling point of water.
  • the process of removing carbon deposits alcohol, or other low boiling varnish remover, from the combustion chamber of an internal which apparently increases the solvent action of combustion engine which comprises heating the 0 aliphatic arrides not only by reducing the viscoated parts, applying to the carbon deposit cosity, but also because they are lower boiling and t y formamide, benzol and alcohol. and tend to keep the liquid in contact with the carbon moving the carbon deposit. in a mild state of agitation. 6.
  • the process of removing carbon deposits As a specific example we may use in each from the combustion chamber of an internal comcylinder 01' an ordinary six cylinder engine 30 ust n engine whi pris s h at the 0.0.
  • a composition of matter for removing car- 30 combustion chamber is at least 150 F. when the bon dep sits f o t a o us n ines mixture is injected or otherwise introduced into comprising an aliphatic de which removes the cylinders and the engine stopped. The mixvarnish, and a low boiling varnish remover. ture is permitted to remain in the cylinders for 8.
  • the parts When cleaning the parts by hand they may be heated, the solvent applied, and when the binder is softened the deposit may be wiped 0115.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Detergent Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

UNITED STATES PATENT OFFICE METHOD AND MEANS FOR REMOVING CARBON DEPOSITS Wheeler G. Lovell and Thomas A. Boyd, Detroit, Mich., assignors to General Motors Research Corporation, Detroit, Micln, a corporation of Delaware No Drawing. Application August 28, 1929 Serial No. 389,089
8 Claims. (01. 8'l-5) This application relates to the removal of carthe carbon deposit diethyl formamide, and rebon deposits from the combustion chambers of moving the carbon deposit. internal combustion engines, and its principal 3. The process of removing carbon deposits objects are to employ compounds particularly from the combustion chamber of an internal suitable for this purpose and a process adapted combustion engine which comprises heating the to employ these compounds at their highest coated parts, applying to the carbon deposit an efliciency. aliphatic amide which removes varnish, and a We have found that aliphatic amides such as low boiling varnish remover, and removing the diethyl formamide and formamide which will carbon deposit. 10 remove varnish are particularly useful in remov- 4. The process of removing carbon deposits ing carbon deposits, and that the best method of from the combustion chamber of an internal using them is to apply them to carbon coated combustion engine which comprises heating the parts which have been heated preferably to a coated parts to above 150 F., applying to the temperature above 150 F., the optimum condicarbon deposit an aliphatic amide which removes 15 tions for water cooled engines being at approxivarnish, benzol and alcohol, and removing the mately the boiling point of water. We may also carbon deposit. use with aliphatic amides a, mixture of benzol and 5. The process of removing carbon deposits alcohol, or other low boiling varnish remover, from the combustion chamber of an internal which apparently increases the solvent action of combustion engine which comprises heating the 0 aliphatic arrides not only by reducing the viscoated parts, applying to the carbon deposit cosity, but also because they are lower boiling and t y formamide, benzol and alcohol. and tend to keep the liquid in contact with the carbon moving the carbon deposit. in a mild state of agitation. 6. The process of removing carbon deposits As a specific example we may use in each from the combustion chamber of an internal comcylinder 01' an ordinary six cylinder engine 30 ust n engine whi pris s h at the 0.0. of a mixture comprising by volume 20 parts a d P s to above pp y g to the of diethyl formamide, 40 parts of benzol, and 40 Carbon p t diethyl formamide, ol and parts of ethyl alcohol. The engine is operated alcohol, and removing the carbon deposit. until the temperature of the metal parts or the '7. A composition of matter for removing car- 30 combustion chamber is at least 150 F. when the bon dep sits f o t a o us n ines mixture is injected or otherwise introduced into comprising an aliphatic de which removes the cylinders and the engine stopped. The mixvarnish, and a low boiling varnish remover. ture is permitted to remain in the cylinders for 8. A composition of matter for removing carabout two hours, more or less, depending upon the bon deposits from internal Combustion engines 35 nature of the carbon deposit, during which time comprising diethyl formamide, benzol and the gummy binder is softened or dissolved. Then alcohol.
the engine is started and the loosened deposit is WHEELER G. LOVELL. gradually blown out the exhaust. THOMAS A. BOYD.
When cleaning the parts by hand they may be heated, the solvent applied, and when the binder is softened the deposit may be wiped 0115.
It is within the scope of the present invention to employ any aliphatic amide which is a varnish remover and to vary the proportions according to 45 the compound used and the specific conditions,
and the aliphatic amide may be used alone.
We claim:- 1. The process of removing carbon deposits from the combustion chamber of an internal combustion engine which comprises applying to the carbon deposit an aliphatic amide which removes varnish, and removing the carbon deposit. 2. The process of removing carbon deposits from the combustion chamber of an internal 5 combustion engine which comprises applying to
US389089A 1929-08-28 1929-08-28 Method and means for removing carbon deposits Expired - Lifetime US1924722A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704733A (en) * 1955-03-22 Process for removing deposits from
US2956910A (en) * 1955-09-22 1960-10-18 Socony Mobil Oil Co Inc Removal of combustion chamber deposits
US4680133A (en) * 1986-03-26 1987-07-14 Environmental Management Associates, Inc. Stripping composition containing an amide and a carbonate and use thereof
US4854973A (en) * 1987-04-06 1989-08-08 Nch Corporation Low odor carbon and paint remover composition
US4909207A (en) * 1981-07-03 1990-03-20 Nissan Motor Company, Limited Cleaning system for fuel injectors
US5324363A (en) * 1992-07-20 1994-06-28 Exxon Research And Engineering Company Method for carbonaceous deposit removal and for reducing engine octane requirement using an aqueous base
US5752990A (en) * 1996-03-29 1998-05-19 Exxon Research And Engineering Company Composition and method for reducing combustion chamber deposits, intake valve deposits or both in spark ignition internal combustion engines
EP2345702A1 (en) * 2010-01-13 2011-07-20 Cognis IP Management GmbH Paint and coating remover compositions

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704733A (en) * 1955-03-22 Process for removing deposits from
US2956910A (en) * 1955-09-22 1960-10-18 Socony Mobil Oil Co Inc Removal of combustion chamber deposits
US4909207A (en) * 1981-07-03 1990-03-20 Nissan Motor Company, Limited Cleaning system for fuel injectors
US4680133A (en) * 1986-03-26 1987-07-14 Environmental Management Associates, Inc. Stripping composition containing an amide and a carbonate and use thereof
US4854973A (en) * 1987-04-06 1989-08-08 Nch Corporation Low odor carbon and paint remover composition
US5324363A (en) * 1992-07-20 1994-06-28 Exxon Research And Engineering Company Method for carbonaceous deposit removal and for reducing engine octane requirement using an aqueous base
US5752990A (en) * 1996-03-29 1998-05-19 Exxon Research And Engineering Company Composition and method for reducing combustion chamber deposits, intake valve deposits or both in spark ignition internal combustion engines
EP2345702A1 (en) * 2010-01-13 2011-07-20 Cognis IP Management GmbH Paint and coating remover compositions

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