CN103089402A - Through pipe adjusting type parallel connection air circuit system - Google Patents

Abstract

A penetrating pipe adjustable parallel air circuit system in the field of mechanical design technology, including a compressor, an engine, a turbine, a connecting pipe, a penetrating pipe, a volume chamber, a moving body and a spring, the moving body is installed in the volume chamber and connected to a strong volume The inner walls are in sealing contact, the first through-pipe, the second through-pipe and the third through-pipe all run through the upper and lower walls of the moving body, and the two ends of the second connecting pipe are respectively connected with the engine exhaust pipe and the right wall of the volume chamber, The right wall of the moving body is connected with the right wall of the volume cavity through a spring. When the pressure in the exhaust pipe of the engine is high, the mobile body moves to the left, and the two superchargers work in parallel; when the pressure in the exhaust pipe of the engine is low, the mobile body moves to the right, and only the first supercharger works. The invention has reasonable design and simple control strategy, and is suitable for turbocharging systems with various numbers of cylinders.

Description

Through-pipe adjustable parallel gas system

technical field

The invention relates to a turbocharging system in the technical field of mechanical design, in particular to a through-pipe regulating parallel air circuit system capable of realizing turbochargers working in series.

Background technique

In the face of increasingly severe environmental and energy crises, increasing power density, reducing fuel consumption and reducing emissions have become the main directions for the development of internal combustion engines. Turbocharging is not only the most effective way to strengthen the internal combustion engine, but also achieves the purpose of reducing fuel consumption and reducing emissions at the same time, which has become an indispensable technical means of modern internal combustion engine technology. However, due to the influence of the flow characteristics of the turbocharger compressor, for the traditional single-scroll single-pressure system, the compressor can only work in a relatively narrow high-efficiency zone, which limits the wide-scale promotion of turbocharging technology. If the engine needs to operate under high pressure ratio conditions, the single-stage turbocharging system is also difficult to meet the requirements, and often needs to be realized through a complex two-stage turbocharging system.

After searching the existing technical literature, it is found that the Chinese patent application number is 200510025774.0, and the patent name is: large and small turbochargers series-parallel adjustable height boosting system. , can realize the series-parallel adjustable of two superchargers; but this invention has a complex structure due to the use of multiple control valves.

Contents of the invention

The present invention aims at the shortcomings of the above-mentioned prior art, and provides a through-pipe adjustable parallel air circuit system, which can realize the single-stage operation of one supercharger and the parallel operation of two superchargers.

The present invention is achieved through the following technical solutions, the present invention comprises a first compressor intake pipe, a first compressor, an engine intake pipe, an engine, an engine exhaust pipe, a first turbine, a first turbine exhaust pipe, a first Connecting shaft, first connecting pipe, second connecting pipe, third connecting pipe, fourth connecting pipe, first through pipe, second through pipe, third through pipe, volume chamber, moving body, spring, second compressor Intake pipe, second compressor, second compressor exhaust pipe, second turbine intake pipe, second turbine, second turbine exhaust pipe and second connecting shaft, the inlet and outlet of the first compressor are respectively connected with the first compressor The air inlet of the engine intake pipe is connected with the air inlet of the engine air intake pipe, the air inlet and outlet of the engine are respectively connected with the air outlet of the engine air intake pipe and the air inlet of the engine exhaust pipe, and the air inlet and outlet of the first turbine are respectively connected with the engine The air outlet of the exhaust pipe and the air inlet of the first turbine exhaust pipe are connected, the first compressor and the first turbine are coaxially connected through the first connecting shaft, the air inlet of the first compressor air inlet, the first The air inlet of the connecting pipe and the air outlet of the first turbine exhaust pipe are all communicated with the upper wall of the volume chamber, the air outlet of the third connecting pipe, the air outlet of the second compressor exhaust pipe, and the inlet of the fourth connecting pipe The air port and the air inlet of the second turbine intake pipe are all connected to the lower wall of the volume chamber, the moving body is installed in the volume chamber and is in sealing contact with the inner wall with a strong volume, the first through pipe, the second through pipe, the third The penetrating pipes run through the upper and lower walls of the moving body. The inlet and outlet of the second compressor are respectively connected with the outlet of the inlet pipe of the second compressor and the inlet of the exhaust pipe of the second compressor. The inlet and outlet of the second turbine They are respectively connected to the air outlet of the second turbine inlet pipe and the air inlet of the second turbine exhaust pipe, the second compressor and the second turbine are coaxially connected through the second connecting shaft, and the air outlet of the first connecting pipe is connected to the engine The intake pipe is connected, and the two ends of the second connecting pipe are respectively connected with the engine exhaust pipe and the right wall of the volume chamber, and the right wall of the moving body is connected with the right wall of the volume chamber by a spring.

Further, in the present invention, the first compressor intake pipe, the first turbine exhaust pipe, the first connecting pipe, the third connecting pipe, the fourth connecting pipe, the second through pipe, the second compressor exhaust pipe, The second turbine intake pipes are all round pipes with the same inner diameter, the first through pipe and the third through pipe are both round pipes with the same inner diameter, and the inner diameter of the first through pipe is larger than the inner diameter of the second through pipe.

During the working process of the present invention, the mobile body can move left and right in the volume cavity. When the pressure in the exhaust pipe of the engine is high, the pressure in the volume cavity on the right side of the moving body is also high, the moving body moves to the left and stretches the spring, and the first compressor intake pipe, the first through pipe and the third connecting pipe are connected The first connecting pipe, the second through pipe, and the second compressor exhaust pipe are connected, the first turbine exhaust pipe, the third through pipe, and the fourth connecting pipe are connected, and the second connecting pipe, the volume chamber, and the second The intake pipes of the two turbines are connected, the first compressor, the first turbine, the second compressor and the second turbine work simultaneously, and the two superchargers are connected in parallel. When the pressure in the exhaust pipe of the engine is low, the pressure in the volume cavity on the right side of the moving body is also low, and the moving body moves to the right under the tension of the spring, and the first compressor intake pipe, the first through pipe, the second The three connecting pipes are connected, the first connecting pipe and the second compressor exhaust pipe are separated, the first turbine exhaust pipe, the third through pipe and the fourth connecting pipe are connected, the second connecting pipe and the second turbine intake pipe Separated from each other, only the first compressor and the first turbine work at the same time.

Compared with the prior art, the present invention has the following beneficial effects: the present invention has reasonable design, simple control strategy, is applicable to turbocharging systems with various cylinder numbers, and can realize single supercharger working mode and double supercharger parallel connection Switching of working mode. In low-speed working conditions, a single supercharger works with more intake pressure and better combustion; in high-speed working conditions, when two superchargers are connected in parallel, the pumping loss is small and the fuel consumption is low.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of A-A section among Fig. 1;

Among them: 1. The first compressor intake pipe, 2. The first compressor, 3. The engine intake pipe, 4. The engine, 5. The engine exhaust pipe, 6. The first turbine, 7. The first turbine exhaust pipe, 8. First connecting shaft, 9. First connecting pipe, 10. Second connecting pipe, 11. Third connecting pipe, 12. Fourth connecting pipe, 13. First through pipe, 14. Second through pipe, 15 , the third through pipe, 16, the volume chamber, 17, the moving body, 18, the spring, 19, the second compressor intake pipe, 20, the second compressor, 21, the second compressor exhaust pipe, 22, the second Turbine intake pipe, 23, the second turbine, 24, the second turbine exhaust pipe, 25, the second connecting shaft.

Detailed ways

The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is based on the technical solution of the present invention, and provides detailed implementation methods and specific operating procedures, but the scope of protection of the present invention is not limited to the following embodiments. .

Example

As shown in Figures 1 and 2, the present invention includes a first compressor intake pipe 1, a first compressor 2, an engine intake pipe 3, an engine 4, an engine exhaust pipe 5, a first turbine 6, and a first turbine exhaust Pipe 7, first connecting shaft 8, first connecting pipe 9, second connecting pipe 10, third connecting pipe 11, fourth connecting pipe 12, first through pipe 13, second through pipe 14, third through pipe 15 , volume chamber 16, moving body 17, spring 18, second compressor inlet pipe 19, second compressor 20, second compressor exhaust pipe 21, second turbine inlet pipe 22, second turbine 23, second turbine Exhaust pipe 24 and the second connecting shaft 25, the air inlet and outlet of the first compressor 2 are respectively connected with the air outlet of the first compressor inlet pipe 1 and the air inlet of the engine intake pipe 3, and the air inlet and outlet of the engine 4 are respectively connected with The air outlet of engine intake pipe 3, the air inlet of engine exhaust pipe 5 are connected, the air inlet and outlet of the first turbine 6 are connected with the air outlet of engine exhaust pipe 5, the air inlet of the first turbine exhaust pipe 7 respectively. Connected, the first compressor 2 is coaxially connected with the first turbine 6 through the first connecting shaft 8, the inlet of the first compressor inlet pipe 1, the inlet of the first connecting pipe 9, the first turbine exhaust pipe The air outlets of 7 are all communicated with the upper wall of the volume chamber 16, the air outlet of the third connecting pipe 11, the air outlet of the second compressor exhaust pipe 21, the air inlet of the fourth connecting pipe 12, the second turbine inlet pipe The air inlets of 22 are all communicated with the lower wall surface of the volume chamber 16, the moving body 17 is installed in the volume chamber 16 and is in sealing contact with the inner wall surface of the volume chamber 16, the first through pipe 13, the second through pipe 14, the third through pipe Pipe 15 all runs through the upper and lower walls of moving body 17, and the air inlet and outlet of the second compressor 20 are respectively connected with the air outlet of the second compressor air inlet pipe 19 and the air inlet of the second compressor exhaust pipe 21. The air inlet and outlet of the turbine 23 are respectively connected with the air outlet of the second turbine intake pipe 22 and the air inlet of the second turbine exhaust pipe 24, and the second compressor 20 is coaxially connected with the second turbine 23 through the second connecting shaft 25 , the air outlet of the first connecting pipe 9 communicates with the engine intake pipe 3, and the two ends of the second connecting pipe 10 communicate with the engine exhaust pipe 5 and the right wall of the volume chamber 16 respectively, and the right wall of the moving body 17 is connected by a spring 18 is connected to the right wall of the volume chamber 16, the first compressor intake pipe 1, the first turbine exhaust pipe 7, the first connecting pipe 9, the third connecting pipe 11, the fourth connecting pipe 12, and the second through pipe 14 1. The second compressor exhaust pipe 21 and the second turbine intake pipe 22 are round pipes with equal inner diameters. The first through pipe 13 and the third through pipe 15 are round pipes with equal inner diameters. The inner diameter of the first through pipe 13 is larger than the inner diameter of the second through pipe 14 .

During the working process of the present invention, the moving body 17 can move left and right in the volume cavity 16 . When the pressure in the engine exhaust pipe 5 was higher, the pressure in the volume chamber 16 on the right side of the moving body 17 was also higher, and the moving body 17 moved to the left and stretched the spring 18, and the first compressor intake pipe 1, the first through The pipe 13 and the third connecting pipe 11 are connected, the first connecting pipe 9, the second through pipe 14, and the second compressor exhaust pipe 21 are connected, the first turbine exhaust pipe 7, the third through pipe 15, the fourth The connecting pipe 12 is connected, the second connecting pipe 10, the volume cavity 16, and the second turbine intake pipe 22 are connected, and the first compressor 2, the first turbine 6, the second compressor 20, and the second turbine 23 work simultaneously. superchargers in parallel. When the pressure in the engine exhaust pipe 5 was low, the pressure in the volume cavity 16 on the right side of the mobile body 17 was also low, and the mobile body 17 moved to the right under the tension effect of the spring 18, and the first compressor intake pipe 1 , the first through pipe 13 and the third connecting pipe 11 are connected, the first connecting pipe 9 and the second compressor exhaust pipe 21 are separated, the first turbine exhaust pipe 7, the third through pipe 15, the fourth connecting pipe 12 are connected, the second connecting pipe 10 and the second turbine intake pipe 22 are separated, and only the first compressor 2 and the first turbine 6 work at the same time. In low-speed working conditions, a single supercharger works with more intake pressure and better combustion; in high-speed working conditions, when two superchargers are connected in parallel, the pumping loss is small and the fuel consumption is low.

Claims (2)

1. one kind runs through pipe regulating type cross gas circuit system, comprises the first compressor air inlet machine pipe (1), the first gas compressor (2), engine air inlet tube (3), motor (4), engine exhaust pipe (5), the first turbine (6), the first turbine exhaust pipe (7) and the first coupling shaft (8), the air inlet/outlet of the first gas compressor (2) respectively with the air outlet of the first compressor air inlet machine pipe (1), the suction port of engine air inlet tube (3) is connected, the air inlet/outlet of motor (4) respectively with the air outlet of engine air inlet tube (3), the suction port of engine exhaust pipe (5) is connected, the air inlet/outlet of the first turbine (6) respectively with the air outlet of engine exhaust pipe (5), the suction port of the first turbine exhaust pipe (7) is connected, and the first gas compressor (2) by coaxial being connected of the first coupling shaft (8), characterized by further comprising the first connecting tube (9) with the first turbine (6), the second connecting tube (10), the 3rd connecting tube (11), the 4th connecting tube (12), the first connecting tube (13), second runs through pipe (14), second runs through pipe (15), cavity volume (16), moving body (17), spring (18), the second compressor air inlet machine pipe (19), the second gas compressor (20), the second gas compressor outlet pipe (21), the second gas inlet casing (22), the second turbine (23), the second turbine exhaust pipe (24) and the second coupling shaft (25), the suction port of the first compressor air inlet machine pipe (1), the suction port of the first connecting tube (9), the air outlet of the first turbine exhaust pipe (7) all is communicated with the upper wall surface of cavity volume (16), the air outlet of the 3rd connecting tube (11), the air outlet of the second gas compressor outlet pipe (21), the suction port of the 4th connecting tube (12), the suction port of the second gas inlet casing (22) all is communicated with the lower wall surface of cavity volume (16), and moving body (17) is arranged in cavity volume (16) and with the internal face sealing of volume strong (16) and contacts, and first runs through pipe (13), second runs through pipe (14), the 3rd runs through two walls up and down that pipe (15) all runs through moving body (17), the air inlet/outlet of the second gas compressor (20) respectively with the air outlet of the second compressor air inlet machine pipe (19), the suction port of the second gas compressor outlet pipe (21) is connected, the air inlet/outlet of the second turbine (23) respectively with the air outlet of the second gas inlet casing (22), the suction port of the second turbine exhaust pipe (24) is connected, the second gas compressor (20) with the second turbine (23) by coaxial being connected of the second coupling shaft (25), the air outlet of the first connecting tube (9) is connected with engine air inlet tube (3), the two ends of the second connecting tube (10) respectively with engine exhaust pipe (5), the right wall of cavity volume (16) is connected, and the right wall of moving body (17) is connected by the right wall of spring (18) with cavity volume (16).

2. the pipe regulating type cross gas circuit system of running through according to claim 1, it is characterized in that the first compressor air inlet machine pipe (1), the first turbine exhaust pipe (7), the first connecting tube (9), the 3rd connecting tube (11), the 4th connecting tube (12), second run through pipe (14), the second gas compressor outlet pipe (21), the second gas inlet casing (22) is pipe and internal diameter equates, first runs through pipe (13), the 3rd runs through pipe (15) and is pipe and internal diameter and equates, the first internal diameter that runs through pipe (13) is greater than the second internal diameter that runs through pipe (14).

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