FR2465877A1 - INTERNAL COMBUSTION ENGINE - Google Patents

Abstract

INTERNAL COMBUSTION ENGINE WITH AT LEAST ONE CYLINDER AND ONE PISTON. IT INCLUDES FEEDING MEANS 25, 115, PROVIDED WITH A RESERVE OF A SUPPLEMENTARY COMBUSTIBLE SUBSTANCE, FLUID BUT NON-GASEOUS, AND WHICH CAN BE TRANSFERRED INTO THE CYLINDER CHAMBER BY ASPIRATION.

Description

1 2465877

  The invention relates to an internal combustion engine comprising at least one cylinder, a piston moving in it, intake and exhaust valves

  arranged in the cylinder head, a device for

  injection port, an intake duct connecting to an intake port or valve and an exhaust duct connecting to an exhaust port or valve, and, in the case of a ignition device,

  also having a carburettor in the intake duct

  a supply duct being supplied to the intake duct, the duct of which the inner mouth is disposed in the immediate vicinity of the intake orifice, or of the intake valve and its valve seat, upstream. the valve seat in the direction of flow,

  at a point as far as possible from the

  lighting or injection relative to the valve seat, air can be introduced through the outgoing end of the intake duct, or suction, this supply line.

  Here we include both the piston engines al-

  as rotary piston engines.

  The introduction of air into such a supply pipe possibly controlled by a valve has

  already been proposed (German patent application P 28 31 694).

  In this proposed realization, only one

  In this case, the supply of starting gas or an emulsion of cutting oil and water is optionally available. According to the proposed embodiment, the inner mouth of the supply pipe is substantially parallel to the seat of the intake valve. This solution is included in the framework of

  the invention to obtain a compact arrangement.

  The present invention includes, in this order of ideas, using the proposed embodiment, the supply of

  air through the supply line controlled by

  Pope. This embodiment has the advantage that this air is introduced to a place that does not influence directly

  the ignition characteristics of the mixture in the chamber

  the work of the cylinder so that it results in a

  stratified charge. This feeding is done by the ef-

  fet suction that occurs in the working chamber.

  The combustion is improved, which increases the purity of the exhaust gas. In addition, a better

fuel efficiency introduced.

  He; is also already known to introduce a fluid

  with a bore halfway up a cylinder, the

  mentation being determined by the suction of the piston moving towards its bottom dead center. It has been proposed in this case to introduce air or liquid for a

  stratified charge on the bottom of the piston.

  The object of the invention is to improve an internal combustion engine so as to reduce fuel consumption while decreasing the operating noise of the engine.

  engine and producing at the same time exhaust gas

  largely free of harmful substances

  to a favorable combustion in the working chamber.

  This object is achieved, according to the invention, in an internal combustion engine of the type described at the beginning, in that provision is made for feeding arrangements which

  are provided with a reserve of at least one combustible substance

  additional fluid, non-gaseous and transferable

  in the chamber of the cylinder by suction.

  This fluid and non-gaseous auxiliary fuel, which is therefore another substance than the supplied air, exerts its combustibility an influence on the combustion in the

  working room, which improves the regularity of

  tion and increases the power, so that the con-

  summation of gasoline is reduced. It should be noted in this

  context that this extra substance is not introduced

  duite mixed with gasoline but separated to form a

stratified charge.

  In one advantageous embodiment, finely ground combustible solid substances are provided as add-on substances. The expression "finely ground" designates the finest possible particle size. The particle size is determined by the fact that this combustible substance

  finely ground has good flow qualities and

  for its totality a large contact area, the

  fine granulometry also allowing a distribution.

  In one advantageous embodiment, flour and / or coals are provided as finely ground auxiliary substances. These finely ground substances, parti-

  particularly advantageous, may be introduced sepa-

  or mixed. Flours are, for example,

  no wood and cereal flour. But one can also consider particulate substances as for example

  milk powder. The list is not exhaustive.

  In another advantageous form, the fuel

  is a liquid. A preferred embodiment

  used alcohols, such as methanol and

cool to burn.

  These substances, whether granular or

  they are liquids, can be added by being

  langées. In an advantageous form of the engine, a supply pipe for the air and the substance is provided.

  Extra; a mixer for the introduction of the

  is placed on this supply line.

  mentation. This results in an advantageous embodiment of an engine with an additional carburettor in which is produced, either a mixture of air and liquid, or a

  mixture of air and finely ground auxiliary fuel.

  The introduction at a point as far as possible from the ignition or injection device has the advantage

  not to directly influence ignition, but to obtain

  improve performance on the race.

  In another advantageous embodiment, one places in

  upstream of the intake valve at least one other

  feeding in the intake duct and has its mouth directly upstream of the seat of the intake valve. In this case, the other supply pipe can be twinned with the pipe

supply air.

  The invention furthermore includes a motor with three supply lines in the form of a triple tube in the intake duct. As a result, if the fuel feed is included, a multi-fuel engine, i.e., at least one or more three-fuel engines.

  In the realization of the motor with a hole

  by valve at half height of the cylinder, it is connected to another suitable embodiment, this orifice controlled

  by one-tank valve for the makeup substance.

  A stratified charge is thus caused by the bottom of the piston. In this case, it is envisaged to place at the mid-height of the cylinder two valve-controlled orifices and to

  connect to two tanks for booster substances.

  It is understood that an auxiliary substance can be introduced into the intake duct directly

  upstream of the intake valve seat and halfway

  cylinder. We thus obtain operating conditions

  particularly favorable. We are also considering

  in this case at least one supply line

  valve-actuated valve which is connected to the

  mission between the valve seats, and to the tanks.

  It is not necessary that the supply lines

  opening upstream of the intake valve into the

  inlet or suction ducts are controlled by a valve. Such a valve control is necessary

  where a supply line leads directly to

  in the working chamber of the cylinder. In this case, a valve can be made in the form of a check valve. But the invention also provides in this case that, for the supply lines also opening into the suction duct, a valve is made in the form of a control valve that can

  be influenced by depression in the vacuum duct

ration.

  In an advantageous embodiment, halfway through

  cylinder height, is connected via

  a non-return valve and a supply line for

  a nozzle-shaped narrowing, another feed port into which a delivery pipe from a reservoir containing a supply of fluid booster fuel. In this case, we place

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  appropriate way in the discharge pipe a valve that can be controlled according to the depression in

  the carburetor of the intake duct.

  If the expression "supply line to

  valve arrangement "includes an anti-tamper

  back as close as possible to the place where it

  in the working chamber, this non-return valve opening under the effect of suction in the working chamber and closing under the effect of pressure, another advantageous embodiment also provides

  to place a direct control valve on a channel

  feeding. In this case, an advantageous realization

  consists of a direct control as a function of the composition of the exhaust gas via an exhaust gas probe placed in the duct

  exhaust. It is thus possible to determine the dosage.

  A particular solution provides in the tank a conveyor device whose flow can be adjusted

  by a rigid control, parallel to and controlled by

  sound with the throttle control lever of the main carburetor. The invention further includes connecting to another supply line arriving at a supply port controlled by a check valve, at

  halfway up the cylinder wall, a tank with

  at least one chamber containing a reserve of a supplementary fuel substance and to place in at least one connecting tube to the other supply line, control valves, at least one of which may, in this case,

  case, be influenced by the depression downstream of a foreign

  in the intake duct. In this case,

  preferably sees at least one adjustment valve according to the setting of the accelerator pedal, which valve can be influenced by the depression in the carburetor of the intake duct. In a preferred embodiment, a control valve in a supply line is connected to an exhaust gas probe for adjustment according to the

exhaust gas composition.

  Suitably, the tank comprises at the top

  a vent port and a fuel line

  The extension extends as a suction pipe to the top of the bottom. This results in a simple layout. In an advantageous embodiment, a carrier device is provided on the reservoir which is provided up to an external mouth of a feed tube, the

  carrier device at the same time constituting a

  dosage for the amount of makeup substance to be added. We can thus measure the addition and

  in this case the invention also provides that the

  The transporter is adjustable so that different loads can be sucked in under conditions

  different operating conditions. As a transport device

  In the case of a granular substance, it is possible to provide a conveying device with a bucket belt whose cavities respectively supply doses of the granular substance to the external mouth of the supply pipe. In this case, the invention also includes conveyor screws. A carrier device for a liquid is a pump which, with an adjustable power,

  can also be used for the assay.

  Where a carrier device is provided, another suitable embodiment is to control the rate or quantity each time carried by the

  carrier device according to a sound signal

  of exhaust gas. For example in the case of pumps or screw conveyors, the rotational speeds can be adjustable, while in the case of conveyor belts or wheels, it is the feed speed that can be adjusted.

can be adjustable.

  To save fuel, in the context of food

  in addition, the nozzle for the food

  The fuel consumption in the carburettor or in the injection device is halved compared to the usual embodiment. It necessarily reduces

fuel consumption.

  When the internal combustion engine is a

  In a preferred embodiment, a rotary piston engine provides for two supply lines to open into the intake duct, one of which is connected to a reservoir for a supplementary fuel substance; in this case, an ignition device is disposed centrally in the front wall of the working chamber and the supply lines are arranged on the outer sides of the intake duct as close as possible to the side walls of the casing. The maximum spacing of the ignition device is obtained by the fact that it is arranged in the middle of the race surface, while the supply lines open on the walls.

  laterally to cause a stratified charge.

  A goal is that the auxiliary fuel to which the invention relates, replaces about 50% of the gasoline normally supplied to an internal combustion engine. If you mentioned alcohol to burn as a liquid,

  an advantageous embodiment provides, in this context,

  text, a mixing ratio of at least 5% alcohol in

the water.

  It is important for the invention that the back-up fuel is not introduced mixed with the gasoline because

  this eliminates the stratified charge effect.

  The invention will be well understood on reading the

  detailed description given below as an example

  only of schematically represented embodiments

  only in the drawing in which: - Figure 1 is a sectional view of an internal combustion engine comprising an alternating piston moving in a cylinder, in a possible embodiment of the invention; - Figure 2 is a side sectional view of a cylinder head, with a variant of the invention; FIG. 3 is a schematic sectional side view of an internal combustion engine, with another variant of the invention; FIG. 4 is a sectional side view of a cylinder head of an internal combustion engine, with another variant of the invention; FIG. 5 is a partial view of an internal combustion engine, with elements for one embodiment of the invention; FIG. 6 is a partial view of FIG. FIG. 7 is another partial view according to FIG. Figure 8 is a sectional view of an internal combustion engine to illustrate another variant of the invention; FIG. 9 is a partial view of an internal combustion engine to illustrate another variant of the invention; FIG. 10 is a partial view of an internal combustion engine, to illustrate another variant of the invention;

  FIG. 11 is a variant of a combustion engine

  internal combustion with rotary piston, in schematic view,

  partly in section; FIG. 11a is a partial view of FIG. 11 in plan view on the intake duct, in section on

along line XIa-XIa.

  In all the figures, the identical parts

  identical reference numbers.

  FIG. 1 represents an internal combustion engine

  does in the form of diesel engine in which a cylinder 2

  is located above a crankcase 1. In the

  3 are placed valve seats for an intake valve, 4, and for an exhaust valve, 5. To these valve seat are connected an intake duct, 6, also called suction duct, and a conduit

  7. With valve seats 4 and 5 cooperating with

  valve bodies, 8 of an intake valve and 9 of an exhaust valve; their valve stems 10 and 11 are actuated in a known manner by a camshaft 14 by means of rocker arms 12 and 13.

  camshaft is driven through a trans-

  mission 15 by a crankshaft 16 whose hand crank

  by means of a connecting rod 17 the piston 18 in the cylinder 2. In the cylinder head 3 is provided a device 19, which is either a spark plug, or in this case an injection device connected by a pipeline

  to a pump 21 driven by the crankshaft 16, to which

  it is brought from a tank 23 by a pipe 22 of gasoline or gas oil which is introduced by the arrangement

  injection aid. It is understood that in this form

  me realize, an air filter 24 is placed on the

intake duct 6.

  In the case of an explosion engine, which will be described later, a carburettor is provided at the intake, and in place of the injection device 19, in place a

ignition device.

  In the first case, it is known to have an outwardly open supply line, the inner mouth 26 of which is disposed immediately above the valve seat 4, at a point as far away from the device as possible. injection 19, and is in a plane parallel to the valve seat. In the context of the present invention, there is connected, for example, to the supply line 25 a reservoir 115 for a combustible, fluid but non-gaseous auxiliary substance, which may be granules or a liquid. In this last

  case, a device similar to a carburettor is needed.

  In FIG. 2, the identical parts bear

  identical reference numbers; in the admission duct

  6 is disposed a carburettor 27 between the seat 4 of the intake valve and the air filter 24. In place of the injection device 19 of FIG. 1, it is placed in the cylinder head 3 a spark plug 37 actuated by a

  distributor, who works and is trained like

  1 to the supply line, connected by a line 28 to the air filter 24, are associated, in this embodiment in the form of a triple tube, two other supply lines 29 and 30, which are respectively connected by connecting pipes 31, 32 to reservoirs 33, 34 each containing a reserve of a non-gaseous auxiliary fuel substance. These reservoirs have dust-free vent holes 35, 36, so that the suction effect in the cylinder working chamber draws in a suitable amount of the makeup substance.

  FIG. 3 represents an internal combustion engine

  in which another supply line 38 is associated with the supply line 25 and can be placed after one of the other supply lines 29 and 30 of FIG. 2, or may comprise according to FIG. Mouthpiece 39 between the seats 4 and 5 of the intake valve and the exhaust valve. This

  supply line leads to a reserve 42

  held in a tank 40 equipped with a conveyor means

  41, which transports from reserve 42 a combustible substance

  tible extra to the outer mouth 43 of the other

  supply line. In this form of realization

  an exhaust gas probe 44 is located in the

  exhaust pipe, which measures exhaust gas

  their composition and is connected by

  45 to convey the latter according to the composition of the exhaust gas, that is to say to provide a greater or lesser amount of a fluid auxiliary fuel substance . FIG. 4 shows the cylinder head of a carbureted engine in which, between the seats 4 and 5 of the intake valve and the exhaust valve, two inlet orifices 39 and 46 respectively connected by a other supply lines 38 and 47 to tanks 40 and 48 in which there are reserves of a booster fuel to be introduced into the cylinder chamber. It is of course in this case that one or two tanks of your choice can be connected to

  dosing or training devices, in order to

  terminate the quantities of add-on substances brought in.

  For example, an exhaust gas probe 44 can be connected by a functional line 45 to a means

  49 in the tank 48, while the tank

  in the tank 40 is dosed solely by the effect

suction that occurs.

  FIG. 5 is a view corresponding to FIG. 2

  however, there is only one other supply line

  30 parallel to the supply line

  , so that this example represents a paired tube 50.

  The supply line 32 is guided from above into a tank 51 containing a reserve 34

  an additional fuel; the mouth 52 of the canal

  The power supply is arranged above and close to

  from the bottom 53 so that it can be used up

  the reserve. It is understood that the bottom 53 can

  be inclined downwards towards the mouth 52.

  In the upper wall of the tank 51 there is an opening

  feed unit closed by a screwed end 54 which

  carries a vent opening 36 tight to the dust.

  IESO. Such an arrangement is possible for the reserve of

  any additional substance; in the case of

  quides, one can choose a particular height of the

  see with respect to the inner mouth 55 so that the suction force required for transport is not

too high.

  It is, of course,

  described, the supply lines are

  of valves, and in particular in the form of

  non-return piston 57, 58, 59, 60, 61 for supply lines opening directly into the working chamber of a cylinder. The invention provides in this case

  that these valves are also regulating valves.

  It should be noted, with respect to FIG. 1, that 56 designates a mixer from which a suction connection

  of air 56 ', so that the mixer constitutes

  speak an extra carburetor. As the

  5, the invention provides that such an adjustment valve, for example 60 in FIG. 5, can be

  actuated via a functional line

  63, depending on an exhaust gas probe 62 corresponding to the probe 44; in the case where the valve is a non-return valve, the opening cross-section is adjustable. The invention also provides

  upstream of the valve 60, or also other

  1 popes, is disposed a valve 64 which is connected by a

  functional channel 63, 65 to the exhaust gas probe

  in order to be able to release or totally throttle the arrival of the auxiliary fuel depending on the state of the exhaust gas. According to FIGS. 6 and 7, provision is also made for a carrier device, already referenced at 41 in FIG.

  3, out of the tank 51 containing the reserve 34. The

  Figures 6 and 7 show as an example of such a device

  conveyor 41 used for the determination, a conveyor belt

  se 66 (FIG 6) which comprises for example cavities 67 in the form of cups or a pump 68 (FIG 7). The drive motors 69, 70 are adjustable from an exhaust gas probe 44 or 62 via a

  functional channel 45 or 63.

  It is understood that we can also use

  correspondingly a conveyor screw.

  In FIG. 8, a reservoir 71 containing a reservoir

  serve 72 of a booster substance is connected by a

  feeding 73 via a

  anti-return 74 to an orifice 76 opening into the chamber

  cylinder 2, which is arranged approximately mid-way between the top and bottom dead

piston 18.

  It is of course in this case that in addition to the supply pipe 25, when it is carried out as a twin pipe, or also according to Figure 1, it is possible to bring a second auxiliary substance, as it

has already been described.

  FIG. 8 gives an example according to which the pump 21 of FIG. 1, which is actuated by the crankshaft 16 via a transmission, is produced

in the form of a distributor 77.

  It should further be mentioned that it is possible to provide, besides the orifice 76 for a makeup substance, for example an additional supply orifice 76 ', at an appropriate height, .surfle cylinder-2, or slightly

  offset in height, to introduce a supplementary substance.

  It should be noted that before such an additional orifice 76 ', 1 2 can be mounted a valve device 78 which contains not only the non-return valve but also a control valve which is actuated via a functional channel. 79 depending on the vacuum in the suction tube.

  Figure 9 shows the other feed hole

* tion 76 'in the cylinder 2 with a check valve 78 directly on the wall of the cylinder and is provided in this supply line 88 a constriction 79 shaped nozzle. This supply line

  additional is open to the atmosphere. In the

  nozzle-shaped narrowing results in a rejection tube

  80 from a reservoir 81 containing a reserve of a fluid auxiliary fuel substance, which is driven by suction effect. In this embodiment, there is provided between the reservoir and the carburetor-like arrangement, 79 and 80, a valve 82 which can be

  controlled via a functional line

  The flow rate of the conveyor device in the reservoir 81, as previously described by way of example, may be adjusted by means of a rod 87, which may be moved by the accelerator pedal 86 at the same time as the control lever 84 of the throttle valve 85 of the

main carburetor.

  FIG. 10 shows another supply pipe 89 arriving at a supply orifice 91 situated halfway up the wall of the cylinder 2 and controlled by a non-return valve 90. This other pipe

  feed 89 is open to the atmosphere, possibly

  by means of an air filter 91. A

  see 92 has two rooms 93 and 94 and in each

  chamber a reserve of a combustible auxiliary substance.

  Between chambers 93, 94 and the other feed pipe

  89 are arranged connecting pipes 97, 98

  with valves 95, 96 which make it possible to dose the

mentation.

  If two valves, or a valve as described in

  tion, can be connected to an exhaust gas sensor 13 for the control, the embodiment shown in FIG. 10 provides that the valve 96 is connected by

  a functional duct 99 with the suction nozzle

  tion, that is to say that it can be controlled as a function of the depression downstream of the throttle 100. This throttling can be controlled by the accelerator pedal

  102 through a linkage 101.

  The other valve 95 is connected by a functional link

  103 to the accelerator pedal 102, and the trin-

  glerie 101; in this case, through a channel

  104, the depression in the carburettor referenced as a whole in 105

  introduces another influence parameter.

  It should be noted, with respect to the control function, that the valve 96 is controlled in the direction of a larger opening when the depression increases

  through the functional channel 99, while the

  pe 95 opens more and more as the pedal 102 is actuated in the direction of acceleration in this case, the pipe 104 introduces a parameter

  which adds to the action of the pedal.

  Suitably, the booster fuel in chamber 93 is particulate matter,

  while in the chamber 94, it is a liquid.

  FIG. 11 schematically represents an internal combustion engine with a rotary piston in section. The piston 106 of known embodiment rotates in the casing 107 which is in the form of an epitrochoid. The housing is traversed by an intake duct 108 and an exhaust duct 109. The intake duct is connected to a carburettor (not shown) so that the mixture is sucked. Little

  near the ducts there is an arrangement of

  110. The piston rotates on a pinion 112 with a

  -couronne internally toothed 111 disposed in this piston.

  In the intake duct is first placed the supply line 25 which goes to the air filter of the carburetor. This supply line forms, in the zone of the intake duct 108, a tube paired with another intake duct 113, which duct goes to a tank 114 containing a reserve of a supplementary fuel, which is made the way

previous tanks.

  Because of the known diametrical arrangement of the con-

  intake duct 108 and the ignition device 110, it is possible to dispose, at the intake duct, the stratified charge with the auxiliary fuels, at the greatest possible distance from the ignition device 110 which

  opens out in the middle of the stroke surface of the piston 106.

  In FIG. 11a, the two supply lines

  and 113 are arranged in the sides of the duct

  mission 108 which are located beside the side walls of the engine, parallel to the drawing. As a result, with a structure of this engine different from that of

  reciprocating piston engine, the maximum distance

  port to the cylinder device to obtain a stratified charge. If, in particular in FIGS. 1 to 10, different possibilities have been indicated for controlling the supply of the auxiliary fuel substance, it is understood that these controls are interchangeable with respect to

  different modes of introduction. For example,

  pes 57, 59, 60 can also be ordered as

  described according to Figures 8 and 10; in this case, if the

  troduction is also done in the breech, we can foresee

a provision according to Figure 9.

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Claims (12)

  1. - Internal combustion engine having at least one cylinder, a piston moving in it,   intake and exhaust valves arranged in the-   cylinder head, an ignition or injection device, an intake duct connecting to an orifice or an intake valve and an exhaust duct connecting to an orifice or a valve of exhaust, and,   in the case of an ignition device, including   a carburetor in the intake duct, a   feeding into the intake duct.   pipe, the inner mouth of which is disposed adjacent to the inlet port, or the intake valve and its valve seat, upstream of the valve seat in the direction of the flow, at a point as far as possible from the ignition device or injection relative to the valve seat, the air that can be introduced through the outgoing end of the conduit   intake, or suction, of this supply line.   characterized in that feeder means (25, 115; 25, 29, 30-34; 38-40; 46-48 are provided;   , 32, 51; 71-73, 76-78; 81, 82, 88; 89-98; 113, 114)   which are provided with a reserve of a combustible substance   fluid, but not gaseous, and can be trans-   leaked into the cylinder chamber by suction.   2. - Internal combustion engine according to the   cation 1, characterized in that combustible solids are provided as a booster substance;   crushed, in particular flours and / or coals.   3. - Internal combustion engine according to the   cation 1, characterized in that liquids, in particular alcohols, such as * methanol and alcohol to burn.   4. - Internal combustion engine according to any one   one of claims 1 to 3, characterized in that   provides a supply line (25) for the air   and the booster substance that is available on that   (25) a mixer (56) as a car-   additional burator to introduce the extra-substance.   5. - Internal combustion engine according to any one   one of claims 1 to 3, characterized in that   upstream of the inlet valve (4) at least one other supply pipe (30) is guided in the intake pipe (6) and its mouth (55) is arranged   immediately upstream of the seat (4) of the intake valve   at least two parallel feeder lines   being arranged as a twin tube (50) in the   intake duct (6), possibly three ducts   feed (25, 29, 30) as a triple tube.   6. - Internal combustion engine according to the claim   5, characterized by being a motor three or more fuels.   7. - Internal combustion engine according to any one   one of claims 1 to 6, wherein at least one   valve-controlled orifice is placed halfway up the cylinder, characterized in that this valve-controlled orifice (76, 78, 91) is connected to a reservoir (71, 92)   for the additional substance, that preferably two ori-   these valve-operated controls (76, 76 ') are arranged sensitively   halfway up the cylinder and are connected to two tanks for makeup substances, a valve (74)   being carried out as a check valve, a valve   pe (78) being furthermore realized as a   setting and can be controlled according to the in the suction tube (6).   8. - Internal combustion engine according to the   cation 7, characterized in that another orifice is connected   feeding (77) at mid-height of the cylinder through   a non-return valve (78) and a supply pipe (88) having a nozzle-like constriction, into which a delivery pipe (80) from a reservoir (81) containing a reserve of a fluid auxiliary substance, which is placed in the discharge pipe aveoupape (82) which can be controlled according to the depression in the carburetor (27) of the   intake duct (6), and that provision is made in the   see (81) a conveying device whose flow rate can be adjusted by a rigid control (87) parallel to and controlled in connection with the throttle control lever (84) of the main carburetor.   9. - Internal combustion engine according to the   cation 7, characterized in that it connects to another   feeding (89) arriving at a feed port   a reservoir (92) having at least one chamber (92, 94) containing a reserve of a combustible substance, controlled by a non-return valve (90) at half-height of the cylinder wall; in at least one connecting tube (97, 98) to the other supply line (89) of the control valves (95, 96), and that at least one control valve ( 96) can be controlled according to the depression downstream of a   throttling (100) in the intake duct.   10. - Internal combustion engine according to claim   cation 7, characterized in that it is connected to another supply pipe (89) arriving at a supply orifice (91) controlled by a non-return valve (90), halfway up the wall of the cylinder , a reservoir (92) having at least one chamber (93, 94) containing a reserve of a supplementary fuel substance, which is placed in at least one connecting tube (97, 98) going to the other channel supply (89) of the regulating valves (95, 96), and that at least one regulating valve   (95) is set according to the setting of the foot pedal.   celery (102) and can be controlled by depression   in the carburetor (5) of the intake duct.   11. - Internal combustion engine according to any   conque of claims 5 to 9, characterized in that   valve (60) in a feed pipe   (32) is connected to an exhaust gas sensor (62) for adjustment according to the composition of the exhaust gas and that the nozzle provided in the injection device or in the carburettor for introduction. of   gasoline is reduced by half compared to the usual situation.   12. - Internal combustion engine according to any one   one of claims 1 to 11, provided with a piston accom-   1 8 pleating a revolution, in the form of a rotary piston engine, characterized in that in the intake duct open two supply lines (25, 113)   one of which is connected to a tank (114) for a fuel   a booster device (110) being disposed centrally in the front wall of the working chamber and the supply lines (25, 113) being arranged on the outer sides of the intake duct; (108) as close as possible to the side walls of the housing (107). 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