Composite turbocharging system for internal combustion engine and motor vehicle

Abstract

The composite turbocharging system comprises the internal combustion engine, a turbine, an electric energy storage device and an air compressor, the exhaust end of the internal combustion engine is connected with an air inlet of the turbine through an exhaust pipeline, a turbine output shaft of the turbine is in transmission connection with a rotor of a power generator, and the power generator is connected with the electric energy storage device; the air compressor is connected with the air inlet intercooler through an air conveying pipeline, the air inlet intercooler is connected with the internal combustion engine through an air inlet pipeline, the driving end of the air compressor is connected with the driving motor, and the power input end of the driving motor is connected with the output end of the electric energy storage device. The defects in the prior art are overcome, waste gas exhausted by the internal combustion engine is output into the turbine, so that a turbine of the turbine can be driven to rotate, a rotor of the generator is driven to rotate, then the generator can generate electricity, the utilization rate of the waste gas is further increased, and the situation of over-pressurization or waste gas bypass waste is avoided; the efficiency of the engine is improved.

Description

Technical Field

[0001] The present invention relates to an internal combustion engine, and more particularly to a turbocharging technology, and more particularly to a compound turbocharging system for an internal combustion engine and a motor vehicle. Background Art

[0002] The turbocharger is arranged on the exhaust side of the engine. The exhaust gas of the engine drives the turbine to work. The compressor coaxially connected to the turbine shaft works synchronously to compress fresh air, thereby increasing the amount of air supplied to the engine cylinder and improving the performance of the engine.

[0003] However, this type of turbocharger turbine and compressor are not decoupled, so a turbocharger waste gas bypass valve is often used to prevent problems such as over-boosting. Under high engine speed conditions or high engine load conditions, there is excess exhaust gas, which is bypassed and discharged through the bypass valve. Therefore, the energy in the excess exhaust gas cannot be fully utilized, making it difficult to further improve the efficiency of the internal combustion engine. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a compound turbocharging system for an internal combustion engine and a motor vehicle, which overcome the deficiencies of the prior art. The compressor is driven by a driving motor so that fresh air can be input into the internal combustion engine, thereby achieving the purpose of supercharging; and the exhaust gas discharged by the internal combustion engine is output to the turbine, thereby driving the turbine of the turbine to rotate, thereby driving the rotor of the generator to rotate, and then the generator can generate electricity, thereby further improving the utilization rate of the exhaust gas, avoiding over-supercharging or avoiding waste of exhaust gas bypass, and improving the efficiency of the engine.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A compound turbocharging system for an internal combustion engine, comprising an internal combustion engine, a turbine, an electric energy storage device and a compressor, wherein the exhaust end of the internal combustion engine is connected to one end of an exhaust pipeline, the other end of the exhaust pipeline is connected to an air inlet of the turbine, the turbine output shaft of the turbine is drivingly connected to a rotor of a generator, and the power output end of the generator is connected to an input end of the electric energy storage device;

[0007] The gas output end of the compressor is connected to the input end of an intake intercooler through a gas pipeline, the output end of the intake intercooler is connected to one end of the intake pipeline, the other end of the intake pipeline is connected to the intake end of the internal combustion engine, the drive end of the compressor is connected to the output shaft of a drive motor, and the power input end of the drive motor is connected to the output end of the electric energy storage device.

[0008] Preferably, the exhaust end of the turbine is connected to the inlet end of the exhaust catalyst through a pipeline.

[0009] Preferably, it also includes an ECU controller, and the signal output end of the ECU controller is respectively connected to the internal combustion engine, the generator and the drive motor signal.

[0010] The invention also discloses a motor vehicle with a compound turbocharging system, which is applied with the compound turbocharging system.

[0011] The present invention provides a compound turbocharger system for an internal combustion engine and a motor vehicle. The system has the following beneficial effects: the compressor is driven by a driving motor, so that fresh air can be input into the intake intercooler through the air delivery pipeline for air cooling, and then input into the internal combustion engine through the intake pipeline, thereby achieving the purpose of supercharging; and during the operation of the internal combustion engine, the exhaust gas discharged is output to the turbine through the exhaust pipeline, thereby driving the turbine of the turbine to rotate, and then the turbine output shaft is connected to the rotor of the generator through the transmission connection, so as to drive the rotor of the generator to rotate, and then the generator can generate electricity, and the electric energy is output to the electric energy storage device for storage, thereby further improving the utilization rate of the exhaust gas, avoiding over-supercharging or avoiding waste of exhaust gas bypass, and improving the efficiency of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings required for describing the prior art are briefly introduced below.

[0013] Figure 1 A schematic diagram of the structure of the present invention;

[0014] Description of the numbers in the figure:

[0015] 1. Internal combustion engine; 2. Turbine; 3. Electric energy storage; 4. Compressor; 5. Exhaust pipeline; 6. Generator; 7. Air pipeline; 8. Intake intercooler; 9. Intake pipeline; 10. ECU controller; 11. Exhaust catalyst; 12. Drive motor. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0017] Embodiment 1, as Figure 1 As shown, a compound turbocharging system for an internal combustion engine comprises an internal combustion engine 1, a turbine 2, an electric energy storage device 3 and a compressor 4, wherein the exhaust end of the internal combustion engine 1 is connected to one end of an exhaust pipe 5, the other end of the exhaust pipe 5 is connected to an air inlet of the turbine 2, the turbine output shaft of the turbine 2 is drivingly connected to a rotor of a generator 6, and the power output end of the generator 6 is connected to the input end of the electric energy storage device 3;

[0018] The gas output end of the compressor 4 is connected to the input end of an intake intercooler 8 through a gas transmission pipeline 7, the output end of the intake intercooler 8 is connected to one end of an intake pipeline 9, the other end of the intake pipeline 9 is connected to the intake end of the internal combustion engine 1, the driving end of the compressor 4 is connected to the output shaft of a driving motor 12, and the power input end of the driving motor 12 is connected to the output end of the electric energy storage 3.

[0019] In this embodiment, an ECU controller 10 is also included, and a signal output terminal of the ECU controller 10 is respectively connected to the internal combustion engine 1, the generator 6 and the drive motor 12 for signals.

[0020] Working principle:

[0021] When there is a need for supercharging, the ECU controller 10 first controls the drive motor 12 to operate so as to operate the compressor 4. The fresh air is input into the intake intercooler 8 through the air supply line 7 by the compressor 4 for air cooling, and then input into the internal combustion engine 1 through the intake line 9, so as to achieve the purpose of supercharging. During the operation of the internal combustion engine 1, the exhaust gas is output to the air inlet of the turbine 2 through the exhaust line 5, so as to drive the turbine of the turbine 2 to rotate, and then the rotor of the generator 6 is driven to rotate through the turbine output shaft and the rotor of the generator 6, so as to enable the generator 6 to generate electricity and output the electric energy to the electric energy storage 3 for storage, so as to further improve the utilization rate of the exhaust gas, avoid over-supercharging, or avoid the waste of exhaust gas bypass, and improve the efficiency of the engine.

[0022] Embodiment 2, as a further preferred embodiment of embodiment 1, the exhaust end of the turbine 2 is connected to the inlet end of the exhaust catalyst 11 through a pipeline. The exhaust catalyst can further catalytically treat the exhaust gas to ensure the exhaust gas emission standard.

[0023] Embodiment 3: The present invention further discloses a motor vehicle, wherein the motor vehicle comprises an internal combustion engine, and the internal combustion engine comprises the above-mentioned compound turbocharging system of the present invention.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A compound turbocharging system for an internal combustion engine, characterized in that: The invention comprises an internal combustion engine (1), a turbine (2), an electric energy storage device (3) and a compressor (4), wherein the exhaust end of the internal combustion engine (1) is connected to one end of an exhaust pipeline (5), the other end of the exhaust pipeline (5) is connected to an air inlet of the turbine (2), the turbine output shaft of the turbine (2) is drivingly connected to the rotor of a generator (6), and the power output end of the generator (6) is connected to the input end of the electric energy storage device (3); The gas output end of the compressor (4) is connected to the input end of an intake intercooler (8) through a gas transmission pipeline (7), the output end of the intake intercooler (8) is connected to one end of an intake pipeline (9), the other end of the intake pipeline (9) is connected to the intake end of the internal combustion engine (1), the drive end of the compressor (4) is connected to the output shaft of a drive motor (12), and the power input end of the drive motor (12) is connected to the output end of the electric energy storage (3).

2. A compound turbocharging system for an internal combustion engine according to claim 1, characterized in that: The exhaust end of the turbine (2) is connected to the inlet end of an exhaust catalyst (11) through a pipeline.

3. A compound turbocharging system for an internal combustion engine according to claim 1, characterized in that: It also includes an ECU controller (10), wherein a signal output end of the ECU controller (10) is respectively connected to the internal combustion engine (1), the generator (6) and the drive motor (12).

4. A motor vehicle, characterized in that: An internal combustion engine is included, and the internal combustion engine is applied with the compound turbocharging system described in any one of claims 1-3.

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