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These methods have been to a large extent superseded by the use of oxygen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, decarbonizing 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 starting 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