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Патент USA US3046418

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July 24, 1962
G. STURBOIS
3,046,408
SELF-STARTER CIRCUIT FOR ‘MOTOR VEHICLES
Filed Feb. 27, 1959
2 Sheets-Sheet l
SAFETY
sw'tcl
NORMALLY
l
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OPEN RI
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7
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1 5!
STARTER
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NORMALLY
CLOSED R2
BATTERY;
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6
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1
1
8
7
/
CHOKE
5
SOLENOID
4
F I G.l.
GENERATOR
'3
STARTER
MOTOR
INVENTOR
GEORGES STURBOIS
July 24, 1962
G_ STURBOls
3,046,408
SELF-STARTER CIRCUIT FOR MOTOR VEHICLES
Filed Feb. 27, 1959
2 Sheets-Sheet 2
SAFETY
SWITCH
IGNITION
NORIMLLY
OPEN
l_
I
I
l
a“ go,
STARTER
SWITCH
A”
_
J
IVOHUALLY
CLOSED
_
22
I
I
CHOKE
SOLENOID
F I G. 2 .
GENERATOR
“3
l ‘STARTER
-=_
MOTOR
INVENTOR
Georges STURBOIS
W
ITTDRAAFYS
3,046,408
Patented July 24, 1962
has!
2
tacts of the relay R1, a safety switch, the ignition, and
3,046,4(98
SELF-STARTER CIRCUET FOR MOTUR
VEHICLES
Georges Sturbeis, 1595 Sauve E., Montreal,
Quebec, Canada
,
Filed Feb. 27, 1959, Ser. No. 7%,044
6 Claims. ((11. 290-67)
a ground connection;
A starter circuit 3 including the battery, normally open
contacts of relay R1 and normally closed contacts of
Dr relays R2 and R3, the starter motor, and a ‘ground con
nection. The normal condition of relays R1, R2 and
R3 is that in which their operating windings are not
energized.
The; present invention relates to a circuit for starting
internal combustion engines of motor vehicles in re
The starter switch is operated, according to the inven
tion, by a timer (FIG. 2) adapted to close the switch for
sponse to a timing device or to a remote signal.
a period of about thirty minutes at intervals of a few
It is well known that during the winter, particularly
hours, or by a remote controlled radio signal (FIG. 1).
in northern climates, the battery of a motor vehicle is
Timers and radio devices for the purposes of the inven
under greatly increased strain and has a tendency to
tion are commonly available and details of the construc
run down. Also the motor and transmission oil tend to 15 tion of such devices are outside the scope of the present
clog if the motor vehicle is left out of use for several
invention.
hours, so that the strain on the battery, when the car
When the starter switch closes the circuit 1, the relay
is started, is still further increased. One remedy for
R1 is energized, and it closes in turn the igniiton circuit
the above situation would be to start the vehicle every
2 and the starter circuit 3, thus operating the starter
few hours, and to allow it to run for a few minutes, until
motor and starting the engine.
it gets warmed up, and so as to recharge the battery to
The basic circuit further comprises a component cir
compensate for the loss of electrical energy used in
cuit, including the generator, and the winding of the pre
starting. Such a procedure is, however, very incon
viously mentioned relay R2. When the engine starts, the
venient.
It is the object of the present invention to provide
generator is operated, and it energizes the relay R2, thus
opening the circuit 3 and stopping the operation of the
a self starter circuit which may either be remotely con
trolled by a radio signal, or which may include a timer
designed to start the motor at predetermined intervals
starter motor.
prises the following component circuits:
A circuit 1, including the battery, the starter switch,
manently.
A safety switch is provided in the ignition circuit 2.
This safety switch is located on the steering mechanism
and keep it running for a predetermined period of time.
of the vehicle, or on the transmission shift lever, and is
The circuit in accordance with the invention may be 30 adapted to open the ignition circuit if an unauthorised
built into any already existing ignition and starter circuit
person attempts to drive the vehicle, thus necessarily hav
of motor vehicles, Without involving any major modi?ca
ing to turn the steering wheel or shift the transmission
tions.
lever. It is noted that a conventional circuit (not shown)
If desired, both, a timing mechanism and a radio de
including the battery, the ignition, the starter motor and
vice may be provided for, in the circuit. If a radio device
a key operated switch is provided to enable manual start
is included, it will ‘be possible for the user of the vehicle
ing of the engine during normal operation of the motor
to remotely start the engine a short time before use, so
vehicle. Thus the safety switch is only active during au
as to warm it up.
tomatic starting and does not affect the normal opera
The circuit in accordance with the invention comprises
tion of the vehicle.
basically a conventional starter circuit and an ignition 40
The starter circuit 3 comprises a groundedbranch which
circuit, a further circuit including a timer or radio op
includes the winding of a solenoid which operates the
erated starter switch, and a relay which is energized by
choke during the operation of the starter motor. Once
closing said starter switch, said relay, when energized,
the engine has started, the starter circuit is opened as de
being adapted to close the ignition and starter circuits.
scribed above, and the choke solenoid is de-energized, so
In addition the invention provides means to open the
that the choke returns to its normal position, to avoid
starter motor circuit once the engine has started, a safety
?ooding of the engine.
device to prevent anyone from driving the vehicle when
It will be seen that, when using the above described
the engine is in automatic operation, as well as timing
basic circuit including component circuits 1, 2, 3, and 4,
devices, which operate automatically to open the starter
should the engine fail to start, the starter motor will oper
circuit in case of failure of the engine to start, allow
ate continuously, as long as the starter switch is closed.
a period of rest, and then close again the starter circuit
This would have an adverse eifect, in that the battery
for a second attempt, and if the engine again refuses to
would be run down instead of being recharged. In order
start, open the starter circuit permanently.
to avoid this, additional circuits 5 and 6 may be used.
Three embodiments of circuits in accordance with the
Circuit 5 includes the battery, the starter switch, the
present invention are illustrated by way of example in
contacts of a normally open thermostatic switch T1, and
FIGS. 1 and 2 of the accompanying drawing.
the winding of a normally closed relay R3 having its con
For the sake of clarity in the following description
tacts included in the starter circuit 3.
the starter circuit according to the invention will be
Circuit 6 includes the battery, the starter switch, and
broken up into its several component circuits, and it is
the ?lament of the thermostatic switch T1. The circuits
understood that as the description progresses, each ad
5 and 6 operate together as vfollows: when the starter
ditional circuit is considered in combination with the
switch is closed, the ?lament‘of the thermostatic T1 grad
whole circuit previously described. The various com
ually heats up, until its contacts close, energizing the
ponent circuits are indicated by numerals 1—8; some of
relay R3 and opening the starter circuit so as to stop the
the circuits have lines in common, these common lines
operation of the starter motor. The ?lament of the ther
bearing the reference numerals of all the circuits in 65 mostatic switch T1 is adapted to heat in about 10 sec
which they are included.
onds. With the above arrangement, if the engine does
The basic circuit is shown in thick lines and com
not start in 10 seconds, the starter circuit is opened per
It will be seen that when using circuits 5 and 6, only
and the Winding of a normally open twin contact relay 70 one attempt is made to start the engine. It is well known
R1;
however, that under adverse conditions, an internal com
An ignition circuit 2, including thhe battery, two con
bustion engine may fail to start on the ?rst attempt, but
dosages
35
may easily start on the second attempt, it a short period
of rest is provided between the two attempts.
To achieve this result a circuit 7 (FIG. 1) may be pro
vided; in this case the relay R3 will be a double acting
relay. The circuit 7 includes the battery, the starter
switch, the ?lament of a second thermostatic switch T2,
and the alternative contacts of the relay R3. The thermo
cause the current consumed by such switches is of neg
ligible value.
The embodiments illustrated and described above, are
given only by way of example, and various modi?cations
are possible within the scope of the appended claims.
I claim:
1. In an engine starting system having a self-starter
circuit including a battery, a starter switch, ‘a starter motor
static switch T2 has normally closed contacts which are
vand means operated by said engine to open said circuit
included in the circuit 6, and the ?lament of the switch
T2 is adapted to heat and open the contacts in approxi 10 when said engine has been started; means for alternately
opening and closing said circuit to provide cranking
mately 10 seconds.
periods of said starter motor alternating with rest periods,
The combined circuits 5, 6 and 7 operate ‘as follows:
said last mentioned means comprising a double acting
when the starter switch is closed, the v?lament of thermo
relay having a winding and two‘ pairs of contacts, one of
static switch Tl heats up, and in about ten seconds closes
said pairs of contacts being closed in the deenergized con
the contact of thermostatic switch T1, energizing the re
dition of said relay and being included in said self-starter
lay R3 and opening the circuit 3. As the relay R3 opens
circuit, a ?rst thermostatic switch having a ?lament and
the circuit 3, it closes the circuit 7, ‘and in another ten
a pair of contacts open in the cold condition of said ?la
seconds the ?lament of the thermostatic switch T2 heats
ment, a second thermostatic switch having a ?lament and
up, thus causing opening of the contacts of thermostatic
switch T2 and opening of circuit 6; this causes cooling of 20 a pair of contacts closed in the cold condition of said
?lament, a ?rst circuit including said battery, said starter
the ?lament of thermostatic switch T1 and consequently
switch, said contacts of said ?rst thermostatic switch and
opening of the contacts of thermostatic switch T1, and
said Winding of said relay, a second circuit including said
de-energizing of the relay R3, which subsequently closes
battery, said starter switch, said ?lament of said ?rst
the circuit 3 and again opens the circuit 7. As soon as
the circuit 7 is opened, the ?lament of the thermostatic 25 thermostatic switch and said contacts of said second ther
mostatic switch, and a third circuit including said battery,
switch T2 cools, the contacts of switch T2 close, the cir~
said starter switch, said ?lament of said second thermo
cuit 6 closes, the ?lament of thermostatic switch T1 heats
static switch and the other of said pairs of contacts of
up, the contacts of thermostatic switch T1 close and the
said relay which pair is open in the deenergized condition
clay R3 is again energized to open the starter circuit 3.
The above operations are repeated in a cycle, as long as 30 of said relay.
2. in an engine starting system according to claim 1,
the starter switch is closed, with the result that the starter
a third thermostatic switch havingr a ?lament and a pair
circuit 3 is alternately closed and opened for ten sec
of contacts closed in the cold condition of said filament,
ond intervals.
said pair of contacts of said third thermostatic switch
The main disadvantage of the combination of circuits
being included in said third circuit, a fourth circuit in
1-7‘as described above is that, if the engine ‘fails to start
cluding said battery, said starter switch and the ?lament
on any of the ‘successive attempts, asubstantial wearing
of said third thermostatic switch; said ?lament of said
down of the battery will result. It is therefore preferable
third thermostatic switch being arranged to heat to switch
to stop the cycle of ‘alternate closing and opening of the
opening temperature in a time period greater than the sum
circuit 3 after a predetermined period of time. '
This is achieved in ‘accordance with the invention by 40 of time periods required to heat the ?laments of said
?rst and of said second thermostatic switches.
the provision of a last circuit 8 (FIG. 2), which includes
3. In an engine starting system according to claim 1,
the battery, the starter switch, and the ?lament of a fur
used in association with a motor vehicle, an ignition cir
ther normally closed thermostatic switch T3. The con
cuit including said battery, said starter switch, and igni
tacts of thermostatic switch T3 are included in the cir
cuit 7. The thermostatic switch T3 is adapted to heat up 4.5 tion means and a safety switch, said safety switch being
opened by operation of a vital vehicle drive controlling
and open in a time period greater than the sum of time
device.
periods required for the heating of thermostatic switches
4. In an engine starting system according to claim 1,
T1 and T2. ‘Preferably the time of switch T3 will be
a timing device connected to said starter switch to close
equal to the sum of twice the time of switch T1 plus
once the time of switch T2; namely if switches T1 and 50 the same.
5. In an engine starting system according to claim 1,
T2 are 10 second switches, T3 will be a 30 second switch.
a remote controlled radio device connected to said starter
In this case, the relay R3 will be energized during 10
switch to close the same.
seconds after the starter switch is closed, giving a 10 sec
6. In an engine starting system according to claim 1,
ond operation of the starter motor; subsequently relay
R3 is energized, opening the starter circuit 3, and giving
the battery 2. 10 second rest, the time required for heating
of thermostatic switch T2, and subsequent opening of
the circuit 6 and cooling of switch T1. Thereafter, switch
T1 opens, to close again the circuit 3 and operate the
starter motor for another ten seconds; at the end of this
last 10 second interval, namely thirty seconds after the
starter switch has been closed, the thermostatic switch T3
heats up, its contacts open, thus opening ‘the circuit 7
and keeping thermostatic switch T2 permanently closed.
As a result the thermostatic switch T1 is continuously 65
heated, its contacts are oontinuouslyikept closed, ‘and the
relay R3 is continuously energized, so as to ‘permanently
open the circuit 3.
It will be noted that, if the engine fails to start after
the second attempt, the ?laments of thermostatic switches
T1 and T3 are continuously heated as long ‘as the starter
switch is closed; this however, is of no consequence, be
used in association with a motor vehicle having a choke;
a solenoid connected to said choke to operate the same,
said solenoid having a winding included in said starter
circuit.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,776,683
1,981,859
1,988,958
2,197,726
2,374,251
2,535,007
2,544,955
2,579,958
2,606,298
2,710,926
2,887,588
Larkin _____________ __
Frese ______________ __
Patterson ___________ __
Johnson ____________ __
‘Wallace ____________ __
Appleton ___________ __
Harvelson __________ __
Sept. 23,
Nov. 27,
Jan. 22,
Apr. 16,
Apr. 24,
Dec. 19,
Mar. 13,
Perhats ____________ __ Dec. 25,
Merritt _____________ __ Aug. 5,
Charles ____________ __ June 14,
Williams ____________ __ May 19‘,
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