OXYGEN PROCESS FOR REMOVAL OF CARBON

Until recently the methods used for removing carbon deposits from gas engine cylinders were very impractical and unsatisfactory. The job meant dismantling the motor, tearing out all parts, and scraping the pistons and cylinder walls by hand.

The work was never done thoroughly. It required hours of time to do it, and then there was always the danger of injuring the inside of the cylinders.

These methods have been to a large extent superseded by the use of oxygen under pressure. The various devices that are being manufactured are known as carbon removers, decarbonizers, etc., and large numbers of them are in use in the automobile and gasoline traction motor industry.

Outfit.--The oxygen carbon cleaner consists of a high pressure oxygen cylinder with automatic reducing valve, usually constructed on the
diaphragm principle, thus assuring positive regulation of pressure. This valve is fitted with a pressure gauge, rubber hose, carbonizing torch with shut off and flexible tube for insertion into the chamber from which the carbon is to be removed.

There should also be an asbestos swab for swabbing out the inside of the cylinder or other chamber with kerosene previous to tarting the operation.

The action consists in simply burning the carbon to a fine dust in the presence of the stream of oxygen, this dust being then blown out.

Operation.--The following are instructions for operating the cleaner:--

(1) Close valve in gasoline supply line and start the motor, letting it run until the gasoline is exhausted.

(2) If the cylinders be T or L head, remove either the inlet or the exhaust valve cap, or a spark plug if the cap is tight. If the cylinders have overhead valves, remove a spark plug. If any spark plug is then remaining in the cylinder it should be removed and an old one or an iron pipe plug substituted.

(3) Raise the piston of the cylinder first to be cleaned to the top of the compression stroke and continue this from cylinder to cylinder as the work progresses.

(4) In motors where carbon has been burned hard, the cylinder interior should then be swabbed with kerosene before proceeding. Work the swab,saturated with kerosene, around the inside of the cylinder until all the carbon has been moistened with the oil. This same swab may be used to ignite the gas in the cylinder in place of using a match or taper.

(5) Make all connections to the oxygen cylinder.

(6) Insert the torch nozzle in the cylinder, open the torch valve gradually and regulate to about two lbs. pressure. Manipulate the nozzle inside the cylinder and light a match or other flame at the opening so that the carbon
starts to burn. Cover the various points within the cylinder and when there is no further burning the carbon has been removed. The regulating and oxygen tank valves are operated in exactly the same way as for welding as
previously explained.

It should be carefully noted that when the piston is up, ready to start the operation, both valves must be closed. There will be a considerable display of sparks while this operation is taking place, but they will not set fire to the grease and oil. Care should be used to see that no gasoline is about.

INDEX

Acetylene

  filtering

  generators

  in tanks

  piping

  properties of

  purification of

Acetylene-air torches

Air

  oxygen from

Alloys

  table of

Alloy steel

Aluminum

  alloys

  welding

Annealing

Anvil

Arc welding, electric

  machines

Asbestos, use of, in welding

Babbitt

Bending pipes and tubes

Bessemer steel

Beveling

Brass

  welding

Brazing

  electric

  heat and tools

  spelter

Bronze

  welding

Butt welding

Calcium carbide

Carbide

  storage of, Fire Underwriters' Rules

  to water generator

Carbon removal

  by oxygen process

Case hardening steel

Cast iron

  welding

Champfering

Charging generator

Chlorate of potash oxygen

Conductivity of metals

Copper

  alloys

  welding

Crucible steel

Cutting, oxy-acetylene

  torches

Dissolved acetylene

Electric arc welding

Electric welding

  troubles and remedies

Expansion of metals

Flame, welding

Fluxes

  for brazing

  for soldering

Forge

  fire

  practice

  tools

  tuvere construction of

  welding

  welding preparation

  welds, forms of

Forging

Gas holders

Gases, heating power of

Generator, acetylene

  carbide to water

  construction

Generator

  location of

  operation and care of

  overheating

  requirements

  water to carbide

German silver

Gloves

Goggles

Hand forging

Hardening steel

Heat treatment of steel

Hildebrandt process

Hose

Injectors, adjuster

Iron

  cast

  grades of

  malleable cast

  wrought

Jump weld

Lap welding

Lead

Linde process

Liquid air oxygen

Magnalium

Malleable iron

  welding

Melting points of metals

Metal alloys, table of

Metals

  characteristics of

  conductivity of

  expansion of

  heat treatment of

  melting points of

  tensile strength of

  weight of

Nickel

Nozzle sizes, torch

Open hearth steel

Oxy-acetylene cutting

  welding practice

Oxygen

  cylinders

  weight of

Pipes, bending

Platinum

Preheating

Removal of carbon by oxygen process

Resistance method of electric welding

Restoration of steel

Rods, welding

Safety devices

Scarfing

Solder

Soldering

  flux

  holes

  seams

  steel and iron

  wires

Spelter

Spot welding

Steel

  alloys

  Bessemer

  crucible

  heat treatment of

  open hearth

  restoration of

  tensile strength of

  welding

Strength of metals

Tank valves

Tapering

Tables of welding information

Tempering steel

Thermit metal

  preheating

  preparation

  welding

Tin

Torch

  acetylene-air

  care

  construction

  cutting

  high pressure

  low pressure

  medium pressure

  nozzles

  practice

Valves, regulating

  tank

Water

  to carbide generator

Welding aluminum

  brass

  bronze

  butt

  cast iron

  copper

  electric

  electric arc

  flame

  forge

  information and tables

  instruments

  lap

  malleable iron

  materials

  practice, oxy-acetylene

  rods

  spot

  steel

  table

  thermit

  torches

  various metals

  wrought iron

Wrought iron

  welding

Zinc