The Washington times., 1925-06-09
SPARK BOOSTER
INVENTOR IS
; ---
HERE
Egbert D. Won LepeI Will Show
Automotive Group How New
invention Works

Egbert D. Won Lepel, of Berlin,
Germany, came to Washington to-
day to consult his patent attorney
in connection with his new auto
invention, the "Lepel Spark Boos-
ter" q device which converts a
weak spark into hot and fla"ing
flame.
Mr.. Won Lepel had been in Chi
cago where he gave a demonstration
Of his invention to a group CO tu-
tomotive industry men. lie viii
give a similar demonstration during
his stay in the National Capital.
The Lepel high frequency current
converter acts like y dam against
the current in the wires before the
sparkling plug, Mr.. Won Lepel ex-
planned. Until the .gnit:on tension
is reached the weak magnetic cur
fOnt is stored by the natural ca
pacity of the ignition device.
Intensified by Storage.
The igniting current, essentially
intensified by the storage, bridges
the spark-gap as a short very strong
current and is then Immediately
stopped by the current converter.
This phenomenon IS many times re-
peated within each ignition Ieriod;
.
able to stop and start the current
some hundred thousand times in a
second.
With the strong current impulses
there act ruShes of current OF many
amperes in lieu of permanent cur
rents of mill amperes, since the
high-frequency oscillation is accom-
plished with the extremely high
number of 20 to 80 millions OF
cycles per second.
On account of the damming effect
of the current converter" the orig
inaI potential is many times newly
built up during each ignition, the
energy stored in the iron core OF
the ignition magnetic is therefore
spent within one-fifth to one-tWen-
tieth of the normal time ACCORDING
to the compression and to the nat
ural capacity of the ignition device.
Always Prepared.
: For that reason the armature of
the magnetic or the core of the
coil is always perfectly prepared
to receive the next following mag
netising impulse even with the
highest speeds. Each single ignit-
ing period consists of a veritable
bornbardment Of strong current i'm
pulses. According to the extremely
high frequency of twenty to thirty
millions per second the tension at
the sparkling plug rises up many
times in. each period to the ignition
voltage within this short fraction
Of time.
A stored electrical charge being
each time available as spare cur
rent thanks to the charge Of the
natural capacity, the igniting spark
still starts when on account o.
SCOT or moisture it would fail at
the sparkling plug of a standard
happens only whenever the shunt
of the spark-plug produced by SCOT
or moisture leaks almost as much
current as the ignition device Is able
to furnishi in that space Of time.
The failure of ignition in a stand
ard device is always initiated by a
fraction Of the current leaking
through a deposit of SCOT which
at first is but slight. It is the
current itself which transforms the
thin layer of dirt into carbon which
highly increases the electrical con-
ductfvity. The short-ci-cuit thus
produced depends chiefly on the
effect of the igniting currents in
use W AaICs
The ignition current transformed
into high-frequency current-rushes
by the current converter" put In
the circuit does not form from any
oil-carbon. Deposits on the spark
ing plug occasionally started in
every motor do not at all trouble
the ignition, they quickly disappear
on the contrary as soon as the
motor runs full speed, whereas the
oil-carbon clings to the plug with
the ancient device. Moreover the
electrodes of the sparkling plugs
burn away much less with the
high-frequency ignition than other
wise.
The current converter requires
for itself but a very small frac-
ton of the ignition tension, CORE
spending to 1880 inch sparkling
distance. It does therefore not
charge the magnetic like the
ancient devices - especially con-
densers or spark stretchers.