CN102562270A - Turbine inlet area adaptive turbo charging system - Google Patents

Abstract

The invention discloses a turbine inlet area adaptive turbo charging system, which relates to the technical field of a combustion motor. The system comprises an air cylinder, an exhaust pipe, a connecting pipe, a turbine, two rotating plates, a rotating shaft and an elastic component. Two ends of the rotating shaft are arranged in the side wall of the connecting pipe; the rotating plates and the rotating shaft are fixedly connected into a whole; and front ends of the two rotating plates are connected with each other through the elastic component. When an engine is in a high-speed condition, the first rotating plate rotates clockwise, the second rotating plate rotates anticlockwise, the area of the opening between the two rotating plates becomes larger, the pumping loss is small, and the performance of the engine is good; and when the engine is in a low-speed condition, under the effect of the elastic component, the first rotating plate rotates anticlockwise, and the second rotating plate rotates clockwise, so that the area of the opening between the two rotating plates becomes smaller, available energy in front of the turbine is more, the admission pressure of the engine is higher, and the performance of the engine is good. The system has reasonable design and simple structure and is applicable to the turbo charging system with only one turbine inlet and a laterally arranged turbine.

Description

Turbo inlet area adaptive turbocharging system

technical field

The invention relates to a turbocharger system in the field of internal combustion engines, in particular to a turbine inlet area self-adaptive turbocharger system.

Background technique

With the development of society and the improvement of environmental protection requirements, the application of engine supercharging technology is becoming more and more extensive. Most of the engines with medium and high power adopt turbocharging technology to improve power and reduce fuel consumption. The two basic types of turbocharging systems are constant pressure supercharging system and pulse supercharging system. Constant pressure supercharging system, each cylinder shares an exhaust pipe with a large volume, the structure of the exhaust pipe system is relatively simple, the pressure in the exhaust pipe is basically kept constant, the pressure is only related to the load and speed of the engine, different cylinder numbers The supercharging system of the diesel engine can be designed uniformly. The constant pressure booster system has less pumping loss, higher turbine efficiency and better performance under high-speed conditions; however, it cannot make full use of the exhaust pulse energy under low-speed conditions. Pulse supercharging system, according to the firing sequence of each cylinder, connects two cylinders or three cylinders that do not interfere with the exhaust to the same exhaust pipe. The diameter of the exhaust pipe system is small, and the exhaust pulse energy can be fully utilized , the low-speed working condition and the transient working condition have better performance; but in the high-speed working condition, the pumping loss is larger. It can be seen that if the volume of the exhaust pipe of an engine can change with the change of working conditions, the volume of the exhaust pipe will be enlarged under high-speed conditions, and the volume of the exhaust pipe will be reduced under low-speed conditions. ideal. On the premise that the volume of the exhaust pipe remains unchanged, by changing the area of the turbine inlet, it is also possible to achieve both high and low engine speed conditions. It is ideal to make the turbine inlet area smaller in low-speed working conditions, and the available energy before the turbine is more; to make the turbine inlet area larger in high-speed working conditions, and the engine pumping loss is smaller, which is also ideal.

After searching the existing technical literature, it is found that Chinese patent number ZL201020532937.0, patent name: turbocharger device with variable exhaust pipe outlet area, this patent technology provides a device with continuously variable turbine inlet area, which can It can better take into account the high and low speed conditions of the engine; however, the change of the turbine inlet area is realized by the rotation of the rotary handle, which requires an additional set of special control mechanisms to control the rotation of the rotary handle, so that the booster system The structure becomes more complicated.

Contents of the invention

The present invention aims at the deficiencies of the above-mentioned prior art, and provides an adaptive turbocharging system for the turbine inlet area, so that the turbine inlet area can be self-adjusted, and the high and low speed conditions of the engine can be well taken into account, and the structure is simple, no A dedicated control mechanism is required.

The present invention is achieved through the following technical solutions, the present invention includes: the first cylinder, the second cylinder, the third cylinder, the first exhaust branch pipe, the second exhaust branch pipe, the third exhaust branch pipe, the exhaust pipe, the connection Tube, turbine, connecting pipe upper side wall, connecting pipe lower side wall, connecting pipe front side wall, connecting pipe rear side wall, first rotating shaft, second rotating shaft, first rotating plate, second rotating plate and elastic member , the first cylinder, the second cylinder, and the third cylinder are respectively connected to the exhaust pipe through the first exhaust branch pipe, the second exhaust branch pipe, and the third exhaust branch pipe, and the outlet of the exhaust pipe is connected to the inlet of the connecting pipe , the outlet of the connecting pipe is connected with the inlet of the turbine, the upper side wall of the connecting pipe, the lower side wall of the connecting pipe, the front side wall of the connecting pipe, and the rear side wall of the connecting pipe are solidly connected as one, the cross section of the connecting pipe is rectangular, the first The two ends of the rotating shaft and the second rotating shaft are respectively installed in the front side wall of the connecting pipe and the rear side wall of the connecting pipe, the first rotating plate is fixedly connected with the first rotating shaft, and the second rotating plate is connected with the second rotating shaft It is fixed as a whole, and the front end of the first rotating plate is connected with the front end of the second rotating plate through an elastic member. The elastic member is a spring.

During the working process of the present invention, the first rotating plate can rotate around the first rotating shaft in the connecting tube, and the second rotating plate can rotate around the second rotating shaft inside the connecting tube. When the engine is at high speed, the exhaust pressure in the exhaust pipe is high, the first rotating plate rotates clockwise, the second rotating plate rotates counterclockwise, the throat area between the two rotating plates becomes larger, and the engine pumping loss Smaller, the performance of the engine is better; when the engine is at low speed, the exhaust pressure in the exhaust pipe is low, under the action of the elastic component, the first rotating plate rotates counterclockwise, and the second rotating plate rotates clockwise. The throat area between the two rotating plates becomes smaller, the available energy before the turbine is more, the intake pressure of the engine is higher, and the overall performance of the engine is better.

Compared with the prior art, the present invention has the following beneficial effects: the present invention is reasonable in design and simple in structure, and is suitable for a turbocharging system with one turbine inlet and the turbine is placed on the side, which can take into account the high and low speed conditions of the engine, and It can make the supercharging system not need a special turbine inlet area control mechanism.

Description of drawings

Fig. 1 is the structural representation of the turbine inlet area adaptive turbocharging system of the present invention;

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

Fig. 3 is the structural representation of B-B section among Fig. 1;

Among them: 1. The first cylinder, 2. The second cylinder, 3. The third cylinder, 4. The first exhaust branch pipe, 5. The second exhaust branch pipe, 6. The third exhaust branch pipe, 7. The exhaust pipe, 8. Connecting pipe, 9. Turbine, 10. Upper side wall of connecting pipe, 11. Lower side wall of connecting pipe, 12. Front side wall of connecting pipe, 13. Rear side wall of connecting pipe, 14. First rotating shaft, 15. The second rotating shaft, 16, the first rotating plate, 17, the second rotating plate, 18, the elastic member.

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 Figure 1, Figure 2 and Figure 3, the present invention includes: a first cylinder 1, a second cylinder 2, a third cylinder 3, a first exhaust branch pipe 4, a second exhaust branch pipe 5, and a third exhaust branch pipe 6. Exhaust pipe 7, connecting pipe 8, turbine 9, connecting pipe upper side wall 10, connecting pipe lower side wall 11, connecting pipe front side wall 12, connecting pipe rear side wall 13, first rotating shaft 14, second The rotating shaft 15, the first rotating plate 16, the second rotating plate 17, the first elastic member 18 and the second elastic member 19, the first cylinder 1, the second cylinder 2, and the third cylinder 3 respectively pass through the first exhaust branch pipe 4 , the second exhaust branch pipe 5, the third exhaust branch pipe 6 are connected with the exhaust pipe 7, the outlet of the exhaust pipe 7 is connected with the inlet of the connecting pipe 8, and the outlet of the connecting pipe 8 is connected with the inlet of the turbine 9, The upper side wall 10 of the connecting pipe, the lower side wall 11 of the connecting pipe, the front side wall 12 of the connecting pipe, and the rear side wall 13 of the connecting pipe are fixedly connected as one, the cross section of the connecting pipe 8 is rectangular, the first rotating shaft 14, the second rotating shaft Both ends of the shaft 15 are respectively installed in the front side wall 12 of the connecting pipe and the rear side wall 13 of the connecting pipe, the first rotating plate 16 is fixedly connected with the first rotating shaft 14, and the second rotating plate 17 is connected with the second rotating shaft. 15 is fixed as a whole, and the front end of the first rotating plate 16 is connected with the front end of the second rotating plate 17 through the elastic member 18, and the elastic member 118 is a spring.

During the working process of the present invention, the first rotating plate 16 can rotate around the first rotating shaft 14 in the connecting tube 8 , and the second rotating plate 17 can rotate around the second rotating shaft 15 inside the connecting tube 8 . When the engine is in a high-speed working condition, the exhaust pressure in the exhaust pipe 7 is relatively high, the first rotating plate 16 rotates clockwise, the second rotating plate 17 rotates counterclockwise, and the throat area between the two rotating plates becomes larger. The pumping loss of the engine is small, and the overall performance of the engine is better; when the engine is in a low-speed working condition, the exhaust pressure in the exhaust pipe 7 is low, and under the action of the elastic member 118, the first rotating plate 16 rotates counterclockwise, The second rotating plate 17 rotates clockwise, the throat area between the two rotating plates becomes smaller, the available energy before the turbine is more, the intake pressure of the engine is higher, and the overall performance of the engine is better. Therefore, the present invention can better take into account the high and low rotational speed working conditions of the engine.

Claims (2)

1. turbine inlet area self-adapting type turbo charge system; Comprise: first cylinder (1), second cylinder (2), the 3rd cylinder (3), first exhaust branch pipe (4), second exhaust branch pipe (5), the 3rd exhaust branch pipe (6), outlet pipe (7), connecting tube (8), turbine (9), connecting tube upper side wall (10), connecting tube lower wall (11), connecting tube front panel (12), connecting tube rear sidewall (13); First cylinder (1), second cylinder (2), the 3rd cylinder (3) are connected with outlet pipe (7) through first exhaust branch pipe (4), second exhaust branch pipe (5), the 3rd exhaust branch pipe (6) respectively; The outlet of outlet pipe (7) is connected with the inlet of connecting tube (8); The outlet of connecting tube (8) is connected with the inlet of turbine (9); Connecting tube upper side wall (10), connecting tube lower wall (11), connecting tube front panel (12), connecting tube rear sidewall (13) fix as one; It is characterized in that also comprising: first running shaft (14), second running shaft (15), first swivel plate (16), second swivel plate (17) and elastic member (18); The cross section of connecting tube (8) is a rectangular; The two ends of first running shaft (14), second running shaft (15) are installed in connecting tube front panel (12) and the connecting tube rear sidewall (13) respectively; First swivel plate (16) fixes as one with first running shaft (14), and second swivel plate (17) fixes as one with second running shaft (15), and the front end of first swivel plate (16) is connected through the front end of elastic member (18) with second swivel plate (17).

2. turbine inlet area self-adapting type turbo charge system according to claim 1 is characterized in that said elastic member (18) is a spring.

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