CN117823274A - Electronic supercharger and turbocharger parallel structure - Google Patents

Abstract

The utility model provides an electronic supercharger and turbo charger parallel structure, includes the automobile engine, be equipped with intake pipe and outlet duct on the automobile engine, the intake pipe is connected to the first air inlet branch pipe and the second air inlet branch pipe of parallelly connected setting, including turbo charger, turbo charger's turbine subassembly is located on the outlet duct, turbo charger's compressor subassembly is located on the first air inlet branch pipe, and is equipped with external circulation pipe on the first air inlet branch pipe of the both ends of this compressor subassembly; the first air inlet branch pipe is provided with a first control valve, and the external circulating pipe is provided with a second control valve; the electronic supercharger is characterized by further comprising an electronic supercharger, wherein a second compressor assembly on the electronic supercharger is arranged on a second air inlet branch pipe, and a third control valve is arranged on the second air inlet branch pipe. The invention adopts a parallel structure creatively, avoids the temperature rise caused by secondary pressurization in a series structure, prolongs the service life of equipment, avoids risks and has more remarkable pressurization effect.

Description

Electronic supercharger and turbocharger parallel structure

Technical Field

The invention belongs to the technical field of turbochargers, and particularly relates to an electronic supercharger and turbocharger parallel structure.

Background

Turbochargers on automobiles increase combustion efficiency by supplying more air to the engine, producing more power. The turbine box is an important structure on the turbocharger, and the turbine box utilizes the exhaust gas discharged by the engine to pass through a turbine wheel to drive a compressor on the turbocharger while rotating at a high speed, so that the air inflow is increased, and the purpose of increasing the output power of the engine is achieved.

At present, along with the progress of technology, an electronic supercharger is started to work by driving a compressor of the electronic supercharger through a motor, so that the purpose of increasing the air inflow of an engine is achieved. In addition, in order to further increase the upper limit of the intake air amount of the engine and meet the requirement of high-power operation of the engine, there is also a scheme of operating an electronic supercharger and a turbocharger in series. In the scheme, a compressor of the electronic supercharger and a compressor of the turbocharger are arranged on the same engine air inlet pipeline, and are arranged in series one after the other to jointly complete supercharging. However, this tandem configuration has the following disadvantages: (1) The temperature of the air flow after the first pressurization is increased, the temperature of the air compressor in the second pressurization process is very easy to exceed 200 ℃, and the air compressor is greatly deformed to cause shell cleaning; (2) The second time of the pressurization high-temperature large deformation of the compressor causes the low cycle fatigue risk aggravation under the high-speed operation condition.

Accordingly, the present application has further studied such a structure based on the above-described state of the art.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the parallel structure of the electronic supercharger and the turbocharger, which creatively adopts the parallel structure, avoids the temperature rise caused by secondary supercharging in the series structure, prolongs the service life of equipment and has more remarkable supercharging effect.

The invention is solved by the following technical scheme.

The utility model provides an electronic supercharger and turbo charger parallel structure, includes the automobile engine, be equipped with intake pipe and outlet duct on the automobile engine, the intake pipe is connected to the first air inlet branch pipe and the second air inlet branch pipe of parallelly connected setting, including turbo charger, turbo charger's turbine subassembly is located on the outlet duct, turbo charger's compressor subassembly is located on the first air inlet branch pipe, and is equipped with external circulation pipe on the first air inlet branch pipe of the both ends of this compressor subassembly; the first air inlet branch pipe is provided with a first control valve, and the external circulating pipe is provided with a second control valve; the electronic supercharger is characterized by further comprising an electronic supercharger, wherein a second compressor assembly on the electronic supercharger is arranged on a second air inlet branch pipe, and a third control valve is arranged on the second air inlet branch pipe.

In the traditional double-booster structure, the air compressor of the electronic booster and the air compressor of the turbocharger are arranged in series, the temperature of the air flow after the first boosting is increased, the air compressor in the second boosting process is very easy to exceed 200 ℃, the operation stability is poor, the service life of a product is seriously influenced, and the fault risk is aggravated. In the application, the parallel design is adopted, the thought formula in the industry is overcome, and the problem is well solved. By adopting the parallel structure in the application, only the turbocharger can work or only the electronic supercharger can work during low-power operation, so that the supercharging requirement can be met; when high power is operated, the electronic booster and the turbocharger work, the requirement of air inflow can be met at the moment, the compressors of the turbocharger and the electronic booster are arranged on the parallel air inlet branch pipes in parallel, air is uniformly pressurized for the second time, the phenomenon that the temperature of the compressors is too high is avoided, the generation of fault risks is avoided, and the stability and the service life of the system are improved. And in this application, through the cooperation of a plurality of control valves, can realize different pressure boost inlet scheme, the practicality is strong.

In a preferred embodiment, a first intercooler is arranged on a pipeline between the first control valve on the first air inlet branch pipe and the turbocharger, and is used for cooling air so as to reduce the thermal load of the engine, improve the air inflow and further increase the power of the engine.

In a preferred embodiment, a second intercooler is arranged on a pipeline between the third control valve on the second air inlet branch pipe and the electronic supercharger, and is used for cooling the gas.

In a preferred embodiment, at least one intake manifold is provided in parallel with the first intake manifold and the second intake manifold, and the intake manifold has the same structure as the second intake manifold and is connected to the intake pipe. This structure is further scheme, can set up more than one air inlet branch that installs electronic booster, is equivalent to a plurality of boosters and can work together and carry out the pressure boost, satisfies high-power engine's limit air inlet pressure boost requirement, and air inlet branch all is parallelly connected, can not influence each other, and system stability is high, longe-lived.

Compared with the prior art, the invention has the following beneficial effects: the parallel structure of the electronic supercharger and the turbocharger is creatively adopted, so that the temperature rise caused by secondary supercharging in a series structure is avoided, the service life of equipment is prolonged, risks are avoided, and the supercharging effect is more remarkable.

Drawings

Fig. 1 is a schematic diagram of a prior art twin booster.

Fig. 2 is a schematic structural diagram of a twin supercharger in a parallel configuration in the present application.

Detailed Description

The invention is described in further detail below with reference to the drawings and the detailed description.

In the following embodiments, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout, and the embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms: the directions of the center, the longitudinal, the lateral, the length, the width, the thickness, the upper, the lower, the front, the rear, the left, the right, the vertical, the horizontal, the top, the bottom, the inner, the outer, the clockwise, the counterclockwise, etc. indicate the directions or the positional relationship based on the directions or the positional relationship shown in the drawings, are merely for convenience of description and simplification of the description, and therefore, should not be construed as limiting the present invention. Furthermore, the term: first, second, etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless explicitly specified and defined otherwise, the terms: mounting, connecting, etc. are to be construed broadly and the specific meaning of the terms herein described will be understood by those skilled in the art in view of the specific circumstances.

Fig. 1 shows a schematic structure of a dual booster in the prior art, from which it can be seen that an air inlet pipe 52 and an air outlet pipe 51 are provided on an automobile engine 5, a turbine component 11 of the turbocharger 1 is provided on the air outlet pipe 51, a compressor component 12 of the turbocharger 1 is provided on the air inlet pipe 52, and a second compressor component 41 of the electronic booster 4 is further provided on the air inlet pipe 52, in which the turbocharger 1 and the electronic booster 4 are in a series structure, so that the turbocharger 1 and the electronic booster 4 cannot operate independently, only if one compressor component operates, the air flow inevitably drives the other compressor component to rotate, which is very troublesome, and is influenced by the air flow in the air outlet pipe 51, the shafting in the turbocharger 1 rotates substantially all the time, the compressor component 12 thereof is always operating, at this time, the second compressor component 41 is not turned on in time, and also rotates passively, and the air flow temperature after two times of boosting is high, and the hazard is large, and the risk is large, resulting in poor system stability.

As shown in fig. 2, the parallel structure of the electronic supercharger and the turbocharger in the application comprises an automobile engine 5, wherein an air inlet pipe 52 and an air outlet pipe 51 are arranged on the automobile engine 5, the air inlet pipe 52 is connected to a first air inlet branch pipe 521 and a second air inlet branch pipe 522 which are arranged in parallel, the parallel structure comprises the turbocharger 1, a turbine component 11 of the turbocharger 1 is arranged on the air outlet pipe 51, a compressor component 12 of the turbocharger 1 is arranged on the first air inlet branch pipe 521, and external circulation pipes 523 are arranged on the first air inlet branch pipes 521 at two ends of the compressor component 12; a first control valve 3 is arranged on the first air inlet branch pipe 521, and a second control valve 2 is arranged on the external circulation pipe 523; the electronic supercharger 4 is further included, the second compressor assembly 41 on the electronic supercharger 4 is arranged on the second air inlet branch pipe 522, and the third control valve 44 is arranged on the second air inlet branch pipe 522.

Specifically, in this application, a first intercooler 21 is disposed on a pipeline between the first control valve 3 on the first intake branch pipe 521 and the turbocharger 1, and a second intercooler 22 is disposed on a pipeline between the third control valve 44 on the second intake branch pipe 522 and the electronic supercharger 4, for cooling gas, so as to reduce the thermal load of the engine, increase the intake air amount, and further increase the power of the engine.

In the application, the parallel connection design is adopted, the thought formula in the industry is overcome, the problem is well solved, and the parallel connection scheme in the application can have various different working states, and the method is specifically as follows.

Low speed stage: the second control valve 2 is opened, the first control valve 3 is closed, the third control valve 44 is opened, and the electronic booster 4 drives the second compressor assembly 41 to work at the moment; the turbine assembly 11 of the turbocharger 1 is operated and the compressor assembly 12 compresses air for self-circulation (via the external circulation pipe 523) and does not participate in the intake operation of the engine 5. This makes it possible to accurately control the intake air amount of the engine by the electronic supercharger 4, avoiding the case where the low-speed intake air amount of the turbocharger 1 is insufficient.

Medium load phase: the second control valve 2 is closed, the first control valve 3 is opened, and the third control valve 44 is closed, at which time the electronic supercharger 4 is not operated, and only the turbocharger 1 is used to provide the intake air amount required for engine combustion.

High speed high load stage: more intake air at a larger pressure is required, at which time the second control valve 2 is closed, the first control valve 3 is opened, and the third control valve 44 is opened, the electronic supercharger 4 and the turbocharger 1 are operated simultaneously, while the first intercooler 21 and the second intercooler 22 cool the compressed hot air to provide a sufficient intake air amount for the engine.

In addition, in a further embodiment of the present application, at least one further intake branch pipe is provided in parallel with the first intake branch pipe 521 and the second intake branch pipe 522, and the intake branch pipe has the same structure as the second intake branch pipe 522, and an electronic supercharger is also provided thereon and connected to the intake pipe 52. The structure is a further scheme, and the purpose is to set more than one air inlet branch pipe provided with the electronic superchargers, so that the plurality of superchargers can work together to supercharge, the limit air inlet supercharging requirement of a high-power engine is met, the air inlet branch pipes are all connected in parallel, the influence on the air inlet branch pipes is avoided, the system stability is high, and the service life is long.

In the above, the invention provides the parallel structure of the electronic supercharger and the turbocharger, which innovatively adopts the parallel structure, so that the temperature rise caused by secondary supercharging in the series structure is avoided, the service life of equipment is prolonged, the risk is avoided, and the supercharging effect is more obvious.

The scope of the present invention includes, but is not limited to, the above embodiments, and any alterations, modifications, and improvements made by those skilled in the art are intended to fall within the scope of the invention.

Claims (4)

1. The parallel structure of the electronic supercharger and the turbocharger is characterized by comprising an automobile engine (5), wherein an air inlet pipe (52) and an air outlet pipe (51) are arranged on the automobile engine (5), the air inlet pipe (52) is connected to a first air inlet branch pipe (521) and a second air inlet branch pipe (522) which are arranged in parallel,

the air inlet device comprises a turbocharger (1), wherein a turbine component (11) of the turbocharger (1) is arranged on an air outlet pipe (51), a compressor component (12) of the turbocharger (1) is arranged on a first air inlet branch pipe (521), and an external circulating pipe (523) is arranged on the first air inlet branch pipe (521) at two ends of the compressor component (12);

a first control valve (3) is arranged on the first air inlet branch pipe (521), and a second control valve (2) is arranged on the external circulating pipe (523);

the electronic supercharger (4) is further included, a second compressor assembly (41) on the electronic supercharger (4) is arranged on a second air inlet branch pipe (522), and a third control valve (44) is arranged on the second air inlet branch pipe (522).

2. An electronic supercharger and turbocharger parallel arrangement according to claim 1, characterized in that a first intercooler (21) is arranged in the line between the first control valve (3) on the first inlet branch (521) and the turbocharger (1).

3. A parallel arrangement of an electronic supercharger and a turbocharger according to claim 2, characterized in that a second intercooler (22) is arranged in the line between the third control valve (44) on the second inlet branch (522) and the electronic supercharger (4).

4. A parallel structure of an electronic supercharger and a turbocharger according to any one of claims 1 to 3, further comprising at least one intake branch pipe provided in parallel with the first intake branch pipe (521) and the second intake branch pipe (522), the structure of the intake branch pipe being identical to that of the second intake branch pipe (522), and being connected to the intake pipe (52).