WO2022194395A1 - Exhaust-driven supercharging system for internal combustion engine - Google Patents
Exhaust-driven supercharging system for internal combustion engine Download PDFInfo
- Publication number
- WO2022194395A1 WO2022194395A1 PCT/EP2021/064649 EP2021064649W WO2022194395A1 WO 2022194395 A1 WO2022194395 A1 WO 2022194395A1 EP 2021064649 W EP2021064649 W EP 2021064649W WO 2022194395 A1 WO2022194395 A1 WO 2022194395A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- ejector
- cylinder
- duct
- exhaust
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 35
- 239000012530 fluid Substances 0.000 claims abstract description 77
- 239000000446 fuel Substances 0.000 claims description 23
- 208000028659 discharge Diseases 0.000 claims description 21
- 230000003213 activating effect Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
Definitions
- the present invention relates to a supercharging system, in particular a composite supercharging system, or in the road or sports field, of a propulsion apparatus.
- the present invention relates to a supercharging method of a propulsion apparatus.
- supercharging is a practice that allows increasing the specific power of propulsion systems thanks to the increase in the density of the aspirated fluid, for example by equipping the propulsion systems used in the aeronautical field with supercharging elements capable of guaranteeing a compression value of the sucked fluid adequate to vary the altitude and therefore to the density of the atmospheric fluid.
- a known turbocharger comprises a turbine solidly connected to a compressor that will increase the density of the suction fluid.
- Various systems for supercharging are known according to the type of engine: electric or thermal; based on the compressor operating principle: volumetric or turbodynamic; and according to the energy source used to operate the compressor.
- turbochargers are unable to immediately satisfy an unexpected request for supercharging by the user, and must wait for the flow of the exhaust fluid to reach a flow rate and an enthalpy value sufficient to accelerate the turbocharger turbine.
- Object of the present invention is solving the aforementioned prior art problems by providing a supercharging system of a propulsion apparatus capable of increasing the power of a propulsion apparatus and at the same time of reusing the energy of the exhaust fluids produced by the propulsion apparatus.
- a further object is providing a supercharging method of a propulsion apparatus capable of obtaining greater useful work or in any case a more active useful work phase.
- a supercharging system 100 is integrated into a propulsion apparatus, such as, for example, a diesel engine, or a gasoline engine, a two-stroke, or a four-stroke engine, or another analogue, and is designed to increase the power of the propulsion apparatus and at the same time to reuse the energy of at least one partially compressed exhaust fluid, produced by the propulsion apparatus during a combustion process by means of at least one ejector 1 of the system 100 physically connected to at least one cylinder 10 of the propulsion apparatus;
- the system 100 is equipped with: - the ejector 1 equipped with a first end connected with a secondary exhaust duct 2, with a second end connected with an external air intake duct 3, and with a third end connected with an intake duct 4 of a combustion chamber 7 of the cylinder 10 by means of a manifold 17; and is designed to produce and introduce into the suction duct 4, through the manifold 17, a pre-compressed mixed suction fluid; - the secondary exhaust duct 2
- this secondary exhaust duct 2 in a third embodiment, can be made of pressed steel or tubular of small dimensions, i.e.
- this solution can be widely used in the sports sector, where pure performance (even at the expense of good power delivery) represents the most important parameter;
- the external air intake duct 3 preferably made of pressed or tubular steel, arranged on the upper surface of the ejector 1, designed to favor suction by the ejector 1 of an external suction fluid from the environment external to the ejector 1;
- the suction duct 4 arranged in the upper portion of the cylinder 10 and physically connected to the third end of the ejector 1, by means of the manifold 17, designed to facilitate the flow of the pre-compressed mixed suction fluid, produced by the ejector 1, in the combustion chamber 7 of the cylinder 10, by actuating an intake valve 6;
- the ejector 1 is designed to obtain the pre-compressed mixed suction fluid by mixing inside it between: the partially compressed exhaust fluid introduced into the ejector 1 through the secondary exhaust duct 2, produced during a partial compression of the mixed intake fluid and the fuel inside the combustion chamber 7 of the cylinder 10, and induced to cross the window 5 by moving the piston 9; and
- the pre-compressed mixed suction fluid thus obtained is able to flow into the suction duct 4 through the manifold 17, and to facilitate the vertical upward movement of the plunger 9.
- the piston 9 is designed to perform a vertical upward movement assuming in sequence: an initial position (lower dead center), favoring a complete opening of the window 5;
- the supercharging process of a propulsion apparatus by means of the supercharging system 100 comprises the steps of: a) preparing the system 100, and activating the ejector 1; b) mixing by means of the ejector 1 between the partially compressed discharge fluid and the external suction fluid until obtaining a pre compressed mixed suction fluid designed to facilitate the vertical upward movement of the plunger 9; c) outflowing the pre-compressed mixed suction fluid, from the suction duct 4 inside the combustion chamber 7 through the suction valve 6; d) injecting fuel by at least one injector (not shown) into the combustion chamber 7, preferably for diesel engines; e) partially compressing the fuel and the mixed suction fluid in the combustion chamber 7 by means of a first vertical upward movement of the piston 9 and a partial closure of the window 5; f) outflowing the partially compressed discharge fluid through the window 5 partially occluded by the piston 9 during the partial compression step; g) performing a second vertical upward movement of the piston 9, totally compressing the fuel and
- a second embodiment of the supercharging process involves the following steps: a) preparing the system 100, and activating the ejector 1; b) mixing by means of the ejector 1 between the partially compressed discharge fluid and the external suction fluid until the pre-compressed mixed suction fluid is obtained; c) injecting fuel using at least one injector (not shown) in the intake duct 4 and mixing in the intake duct 4 of the fuel with the pre-compressed mixed intake fluid, preferably for petrol engines; d) entering into the combustion chamber 7 the fuel mixed with the pre-compressed mixed suction fluid, favoring the vertical upward movement of the piston 9; e) recovering and introducing the partially compressed discharge fluid into the ejector 1 through the secondary discharge duct 2 and repeating the previous steps.
- the supercharging system 100 also comprises a cooling device designed to induce cooling of the external air sucked into the ejector 1 by means of the external air intake duct 3; and a compressor placed above the cooling device, favoring an increase in the efficiency of the propulsion apparatus.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
A supercharging system (100) integrated in a propulsion apparatus physically connected to at least one cylinder (10) of the propulsion apparatus is described, the system (100) being designed to increase the power of the propulsion apparatus and simultaneously to reusing the energy of at least one partially compressed exhaust fluid produced by the propulsion apparatus during a combustion process.
Description
EXHAUST-DRIVEN SUPERCHARGING SYSTEM FOR INTERNAL COMBUSTION ENGINE
The present invention relates to a supercharging system, in particular a composite supercharging system, or in the road or sports field, of a propulsion apparatus.
Also, the present invention relates to a supercharging method of a propulsion apparatus.
It is known that supercharging is a practice that allows increasing the specific power of propulsion systems thanks to the increase in the density of the aspirated fluid, for example by equipping the propulsion systems used in the aeronautical field with supercharging elements capable of guaranteeing a compression value of the sucked fluid adequate to vary the altitude and therefore to the density of the atmospheric fluid.
It is known that supercharging can be obtained by coupling a turbocharger to the propulsion apparatus, which advantageously uses the residual energy contained in the exhaust fluid present in
the exhaust duct otherwise dissipated in the environment: a known turbocharger comprises a turbine solidly connected to a compressor that will increase the density of the suction fluid. Various systems for supercharging are known according to the type of engine: electric or thermal; based on the compressor operating principle: volumetric or turbodynamic; and according to the energy source used to operate the compressor.
The well-known turbochargers are unable to immediately satisfy an unexpected request for supercharging by the user, and must wait for the flow of the exhaust fluid to reach a flow rate and an enthalpy value sufficient to accelerate the turbocharger turbine.
It is evident that there is no state of the art system that provides supercharging to an engine and at the same time allows the recovery of the waste gases of the combustion process, by means of a device without moving parts.
Object of the present invention is solving the aforementioned prior art problems by providing a supercharging system of a propulsion apparatus capable of increasing the power of a propulsion
apparatus and at the same time of reusing the energy of the exhaust fluids produced by the propulsion apparatus.
A further object is providing a supercharging method of a propulsion apparatus capable of obtaining greater useful work or in any case a more active useful work phase.
The aforementioned and other objects and advantages of the invention, which will emerge from the following description, are achieved with a supercharging system and method as described in the respective independent claims. Preferred embodiments and non-trivial variants of the present invention form the subject of the dependent claims. It is understood that all attached claims form an integral part of the present description.
It will be immediately obvious that innumerable variations and modifications (for example relating to shape, dimensions, arrangements and parts with equivalent functionality) can be made to what is described without departing from the scope of the invention as appears from the attached claims.
The present invention will be better described
by some preferred embodiments, provided by way of non-limiting example, with reference to the attached drawing, in which Figure 1 shows a sectional view of a preferred embodiment of the system according to the present invention.
Referring to the Figure, a supercharging system 100 according to the present invention is integrated into a propulsion apparatus, such as, for example, a diesel engine, or a gasoline engine, a two-stroke, or a four-stroke engine, or another analogue, and is designed to increase the power of the propulsion apparatus and at the same time to reuse the energy of at least one partially compressed exhaust fluid, produced by the propulsion apparatus during a combustion process by means of at least one ejector 1 of the system 100 physically connected to at least one cylinder 10 of the propulsion apparatus; advantageously, the system 100 is equipped with: - the ejector 1 equipped with a first end connected with a secondary exhaust duct 2, with a second end connected with an external air intake duct 3, and with a third end connected with an intake duct 4 of a combustion chamber 7 of the
cylinder 10 by means of a manifold 17; and is designed to produce and introduce into the suction duct 4, through the manifold 17, a pre-compressed mixed suction fluid; - the secondary exhaust duct 2 : in one embodiment it can be obtained in pressed steel or tubular composite type, in which there are one or more exhaust stages (not shown), equipped with a first end connected to the first end of the ejector 1, and provided with a second end connected to the lateral surface of the cylinder 10 in correspondence with at least one opening 5, designed to facilitate the flow of the partially compressed exhaust fluid from the cylinder 10 to the ejector 1; this secondary exhaust duct 2, in a second embodiment, can be obtained in pressed steel or tubular steel of big dimensions, i.e. designed to dampen the high pressure exhaust pulses, typical of the exhaust of a engine, allowing the ejector to operate in stationary conditions by means of a constant pressure configuration, even if with lower pressure levels: with this system, the efficiency of the ejector is favored at the expense of pure performance, and it is obviously the system that can be adopted in the road sector; finally, this
secondary exhaust duct 2, in a third embodiment, can be made of pressed steel or tubular of small dimensions, i.e. designed to operate with high pressure exhaust pulses, allowing the ejector to operate in non-stationary conditions by means of a variable pressure configuration, affected by a certain number of impulses supplied by the exhaust and with high pressure levels: this solution can be widely used in the sports sector, where pure performance (even at the expense of good power delivery) represents the most important parameter;
- the external air intake duct 3, preferably made of pressed or tubular steel, arranged on the upper surface of the ejector 1, designed to favor suction by the ejector 1 of an external suction fluid from the environment external to the ejector 1;
- the suction duct 4, arranged in the upper portion of the cylinder 10 and physically connected to the third end of the ejector 1, by means of the manifold 17, designed to facilitate the flow of the pre-compressed mixed suction fluid, produced by the ejector 1, in the combustion chamber 7 of the cylinder 10, by actuating an intake valve 6;
- the opening 5, such as, for example, a port, a hole, a slit, or other similar, arranged on the lateral surface of the cylinder 10 at the second end of the secondary discharge duct 2, designed to facilitate the flow of the partially compressed exhaust from cylinder 10 to ejector 1 via secondary exhaust duct 2;
- the intake valve 6, located in the upper part of the cylinder 10, operated by a camshaft (not shown) designed to slide inside the cylinder 10, favoring the flow of the pre-compressed mixed suction fluid from the intake duct 4 to the combustion chamber 7 of the cylinder 10;
- the combustion chamber 7, located inside the cylinder 10, designed to promote combustion between a fuel injected by an injector 8 and the pre compressed mixed suction fluid coming from the intake duct 4;
- a piston 9, arranged inside the cylinder 10, connected by means of a rod 11 and a crank 12 to a crankshaft 16, designed both to transfer to the crankshaft 16, through the rod 11 and the crank 12, a mechanical force generated by the combustion between the fuel and the mixed suction fluid, both to induce an opening and/or a closing of the window
5 during a rectilinear movement of the piston 9 along a directional axis in both directions, by adjusting the outflow of the partially compressed exhaust fluid into the secondary exhaust duct 2 via the window 5;
- cylinder 10, equipped with:
- the intake duct 4 and the intake valve 6 arranged in the upper portion of the cylinder 10;
- the injector 8 arranged in the upper central portion of the cylinder 10;
- a primary exhaust duct 15, arranged in the upper right portion of the cylinder 10, designed to facilitate the flow of a completely compressed exhaust fluid, obtained following the combustion of the fuel and the mixed intake fluid, from the combustion chamber 7 towards known exhaust elements, by means of an exhaust valve 14 arranged in the upper right portion of the cylinder 10, operated by a camshaft (not shown); and - the window 5 arranged on the lateral surface of the cylinder 10.
In particular, the ejector 1 is designed to obtain the pre-compressed mixed suction fluid by mixing inside it between: the partially compressed exhaust fluid
introduced into the ejector 1 through the secondary exhaust duct 2, produced during a partial compression of the mixed intake fluid and the fuel inside the combustion chamber 7 of the cylinder 10, and induced to cross the window 5 by moving the piston 9; and
- the external suction fluid introduced into the ejector 1 through an external air intake duct
3. The pre-compressed mixed suction fluid thus obtained is able to flow into the suction duct 4 through the manifold 17, and to facilitate the vertical upward movement of the plunger 9.
In particular, the piston 9 is designed to perform a vertical upward movement assuming in sequence: an initial position (lower dead center), favoring a complete opening of the window 5;
- an intermediate position during the partial compression phase of the mixed suction fluid and fuel, partially occluding the window 5 and favoring the outflow of the partially compressed discharge fluid in the secondary discharge duct 2; and
- a final position (top dead center) during a complete compression phase of the mixed suction
fluid and fuel, completely occluding the window 5.
Finally, the supercharging process of a propulsion apparatus by means of the supercharging system 100 according to the present invention, comprises the steps of: a) preparing the system 100, and activating the ejector 1; b) mixing by means of the ejector 1 between the partially compressed discharge fluid and the external suction fluid until obtaining a pre compressed mixed suction fluid designed to facilitate the vertical upward movement of the plunger 9; c) outflowing the pre-compressed mixed suction fluid, from the suction duct 4 inside the combustion chamber 7 through the suction valve 6; d) injecting fuel by at least one injector (not shown) into the combustion chamber 7, preferably for diesel engines; e) partially compressing the fuel and the mixed suction fluid in the combustion chamber 7 by means of a first vertical upward movement of the piston 9 and a partial closure of the window 5; f) outflowing the partially compressed discharge fluid through the window 5 partially occluded by
the piston 9 during the partial compression step; g) performing a second vertical upward movement of the piston 9, totally compressing the fuel and the suction fluid mixed in the combustion chamber 7, completely closing the window 5, activating the combustion process; h) activating the discharge valve 14 and completely expelling the completely compressed discharge fluid into the primary discharge pipe 15; and simultaneously i) recovering and introducing the partially compressed discharge fluid partially compressed into the ejector 1 through the secondary discharge pipe 2 and repetition of steps b) to h). A second embodiment of the supercharging process involves the following steps: a) preparing the system 100, and activating the ejector 1; b) mixing by means of the ejector 1 between the partially compressed discharge fluid and the external suction fluid until the pre-compressed mixed suction fluid is obtained; c) injecting fuel using at least one injector (not shown) in the intake duct 4 and mixing in the intake duct 4 of the fuel with the pre-compressed
mixed intake fluid, preferably for petrol engines; d) entering into the combustion chamber 7 the fuel mixed with the pre-compressed mixed suction fluid, favoring the vertical upward movement of the piston 9; e) recovering and introducing the partially compressed discharge fluid into the ejector 1 through the secondary discharge duct 2 and repeating the previous steps. In a second embodiment, the supercharging system 100 also comprises a cooling device designed to induce cooling of the external air sucked into the ejector 1 by means of the external air intake duct 3; and a compressor placed above the cooling device, favoring an increase in the efficiency of the propulsion apparatus.
Some preferred forms of implementation of the invention have been described, but of course they are susceptible to further modifications and variations within the same inventive idea. In particular, numerous variants and modifications, functionally equivalent to the preceding ones, which fall within the scope of the invention as highlighted in the attached claims, will be immediately apparent to those skilled in the art.
Claims
1. Supercharging system (100) integrated in a propulsion apparatus, characterized in that it is physically connected to at least one cylinder (10) of said propulsion apparatus, said system (100) being designed to increase the power of said propulsion apparatus and simultaneously to reuse the energy of at least one partially compressed exhaust fluid produced by said propulsion apparatus during a combustion process.
2. System (100) according to the previous claim, characterized in that it comprises: an ejector (1) equipped with a first end connected to a secondary exhaust duct (2) of the composite type, in which there are one or more exhaust stages, with a second end connected to a duct aspiration (3) of external air, and of a third end connected to an intake duct (4) of a combustion chamber (7) of said cylinder (10) by means of a manifold (17); and designed to produce and introduce into said suction duct (4), through said manifold (17), a pre-compressed mixed suction fluid;
- said secondary exhaust duct (2), equipped with a first end connected with said first end of said
ejector (1), and with a second end connected with the lateral surface of said cylinder (10) in correspondence with at least one opening (5), designed to facilitate the flow of a partially compressed exhaust fluid from said cylinder (10) to said ejector (1);
- said external air intake duct (3), arranged on the upper surface of said ejector (1), designed to favor suction by said ejector (1) of an external suction fluid from the external environment to said ejector (1);
- said opening (5), arranged on the lateral surface of said cylinder (10) at the second end of said secondary exhaust duct (2), designed to favor the outflow of said partially compressed exhaust fluid from said cylinder (10) to said ejector (1) by means of said secondary exhaust duct (2);
- a piston (9), arranged inside said cylinder (10), designed to induce an opening and/or closing of said window (5) during a rectilinear movement of said piston (9) along a directional axis in both directions, regulating an outflow of said partially compressed discharge fluid in said secondary discharge duct (2) by means of said window (5); and - said cylinder (10).
3. System (100) according to the previous claim, characterized in that said ejector (1) is designed to obtain said pre-compressed mixed suction fluid, by mixing inside it between: - said partially compressed exhaust fluid introduced into said ejector (1) by means of said secondary exhaust duct (2), produced during a partial compression of said pre-compressed mixed intake fluid and fuel inside said combustion chamber (7) of said cylinder (10), and caused to pass through said window (5) by moving said piston (9); and
- said external suction fluid introduced into said ejector (1) through said external air intake duct (3).
4. System (100) according to the preceding claim, characterized in that said pre-compressed mixed suction fluid is able to flow into said suction duct (4) by means of said manifold (17), and to favor said vertical movement towards the top of said piston (9).
5. System (100) according to claims 1 and 2, characterized in that said piston (9) is designed to carry out a vertical upward movement assuming in sequence:
an initial position, i.e. a lower dead point, favoring a complete opening of said window (5); an intermediate position during said phase of partial compression of said pre-compressed mixed suction fluid and said fuel, partially occluding said window (5) favoring the outflow of the partially compressed discharge fluid in said secondary discharge duct (2); and
- a final position, i.e. a top dead center, during said phase of total compression of said mixed suction fluid and said fuel, completely occluding said window (5).
6. System (100) according to claims 1, 2 and 3, characterized in that said system (100) further comprises: said intake duct (4), arranged in the upper portion of said cylinder (10) and physically connected to the third end of said ejector (1), by means of said manifold (17), designed to facilitate the flow of said fluid pre-compressed mixed suction, produced by said ejector (1), in said combustion chamber (7) of said cylinder (10), by activating at least one intake valve (6);
- said intake valve (6), arranged in the upper part of said cylinder (10), operated by a camshaft
designed to slide inside said cylinder (10) favoring the outflow of said pre-compressed mixed suction fluid from said intake duct (4) to said combustion chamber (7) of said cylinder (10); - said combustion chamber (7), arranged inside said cylinder (10), designed to favor combustion between said fuel injected by an injector (8) and said mixed suction fluid coming from said suction duct (4).
7. System (100) according to claim 1, characterized in that said cylinder (10) is equipped with:
- said intake duct (4) and said intake valve (6) arranged in the upper portion of said cylinder (10); - said injector (8) arranged in the upper central portion of said cylinder (10); a primary exhaust duct (15), arranged in the upper right portion of said cylinder (10) designed to favor the flow of a completely compressed exhaust fluid, obtained following the combustion of said fuel and said mixed suction fluid, from said combustion chamber (7) towards a plurality of exhaust elements, by means of an exhaust valve (14) arranged in the upper right portion of said cylinder (10), operated by a camshaft; and
said window (5) arranged on the lateral surface of said cylinder (10).
8. System (100) according to any one of the preceding claims, characterized in that it further comprises at least one cooling device designed to induce cooling of the external air drawn in by said ejector (1) by means of said external air intake duct (3); and a compressor arranged above said cooling device, favoring an increase in the efficiency of said propulsion apparatus.
9. System (100) according to any one of the preceding claims, characterized in that said secondary exhaust duct (2) is obtained in pressed steel or tubular composite type, in which one or more exhaust stages are present, to favor the flow of the partially compressed exhaust fluid from the cylinder (10) to the ejector (1).
10. System (100) according to any one of the preceding claims 1 to 8, characterized in that said secondary exhaust duct (2) is obtained in pressed steel or tubular of large dimensions, i.e. designed to dampen the high exhaust pulses pressure, typical of an engine exhaust, allowing the ejector to operate in stationary conditions by means of a constant pressure configuration, albeit with lower
pressure levels, and with the adoption of the system in the road sector.
11. System (100) according to any one of the preceding claims 1 to 8, characterized in that said secondary exhaust duct (2) is made of pressed steel or tubular of small dimensions, i.e. designed to operate with high exhaust pulses pressure, allowing the ejector to operate in non-stationary conditions by means of a variable pressure configuration, being affected by a certain number of impulses supplied by the exhaust and with high pressure levels, with the system being adopted in the sports sector.
12. Propulsion method implemented by means of the supercharging system (100) according to any one of the preceding claims, said method being characterized in that it comprises the steps of: a) preparing said system (100), and activating said ejector (1); b) mixing by means of said ejector (1) between said partially compressed discharge fluid and said external suction fluid until said pre-compressed mixed suction fluid is obtained, designed to favor the vertical upward movement of said plunger (9); c) outflowing said pre-compressed mixed suction
fluid, from said intake duct (4) inside said combustion chamber (7) through said intake valve
(6); d) injecting said fuel by at least one injector into said combustion chamber (7); e) partially compressing said fuel and said suction fluid mixed in the combustion chamber (7) by means of a first vertical upward movement of said piston (9) and partial closure of said window (5); f) outflowing the partially compressed discharge fluid through said window (5) partially occluded by said piston (9) during said partial compression step; g) performing a second vertical upward movement of said piston (9), totally compressing said fuel and said mixed suction fluid in said combustion chamber (7), completely closing said window (5), and activating said combustion process; h) activating said discharge valve (14) and completely expelling said completely compressed discharge fluid in said primary discharge duct (15); and simultaneously i) recovering and introducing said partially compressed discharge fluid into said ejector (1) by means of said secondary discharge duct (2) and
repeating steps b) to h).
13. Propulsion method implemented by means of the supercharging system (100) according to any one of the preceding claims, said method being characterized in that it comprises the steps of: a) preparing said system (100), and activating said ejector (1); b) mixing by means of said ejector (1) between said partially compressed discharge fluid and external suction fluid until said pre-compressed mixed suction fluid is obtained; c) injecting said fuel by means of at least one injector in said intake duct (4) and mixing in said intake duct (4) of said fuel with said pre- compressed mixed suction fluid; d) entering into said combustion chamber (7) said fuel mixed with said pre-compressed mixed suction fluid, favoring the vertical upward movement of said piston (9); e) recovering and introducing the partially compressed exhaust fluid into said ejector (1) by means of said secondary exhaust duct (2) and repeating the previous steps.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102021000006575 | 2021-03-19 | ||
| IT102021000006578 | 2021-03-19 | ||
| IT102021000006575A IT202100006575A1 (en) | 2021-03-19 | 2021-03-19 | Supercharging system in the road sector and relative procedure |
| IT102021000006578A IT202100006578A1 (en) | 2021-03-19 | 2021-03-19 | Supercharging system in sports and relative procedure |
| IT102021000006572 | 2021-03-19 | ||
| IT102021000006572A IT202100006572A1 (en) | 2021-03-19 | 2021-03-19 | Composite supercharging system and its procedure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022194395A1 true WO2022194395A1 (en) | 2022-09-22 |
Family
ID=76355456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2021/064649 WO2022194395A1 (en) | 2021-03-19 | 2021-06-01 | Exhaust-driven supercharging system for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2022194395A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1765278A (en) * | 1926-04-24 | 1930-06-17 | Rene Forest | Mechanical device for the supply of explosible gas to internal combustion engines |
| US2390161A (en) * | 1941-11-07 | 1945-12-04 | Mercier Pierre Ernest | Airplane power plant |
| US4693085A (en) * | 1985-08-16 | 1987-09-15 | Daimler-Benz Aktiengesellschaft | Device for increasing the rotational speed of an exhaust gas turbo-charger on an internal combustion engine |
| US5611203A (en) * | 1994-12-12 | 1997-03-18 | Cummins Engine Company, Inc. | Ejector pump enhanced high pressure EGR system |
| US6502397B1 (en) * | 1999-08-23 | 2003-01-07 | Motortestcenter Mtc Ab | Device for the transfer of exhaust gas from the exhaust collector of a supercharged internal combustion engine to the inlet conduit thereof |
-
2021
- 2021-06-01 WO PCT/EP2021/064649 patent/WO2022194395A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1765278A (en) * | 1926-04-24 | 1930-06-17 | Rene Forest | Mechanical device for the supply of explosible gas to internal combustion engines |
| US2390161A (en) * | 1941-11-07 | 1945-12-04 | Mercier Pierre Ernest | Airplane power plant |
| US4693085A (en) * | 1985-08-16 | 1987-09-15 | Daimler-Benz Aktiengesellschaft | Device for increasing the rotational speed of an exhaust gas turbo-charger on an internal combustion engine |
| US5611203A (en) * | 1994-12-12 | 1997-03-18 | Cummins Engine Company, Inc. | Ejector pump enhanced high pressure EGR system |
| US6502397B1 (en) * | 1999-08-23 | 2003-01-07 | Motortestcenter Mtc Ab | Device for the transfer of exhaust gas from the exhaust collector of a supercharged internal combustion engine to the inlet conduit thereof |
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