CN205477914U - Exhaust -gas turbocharger - Google Patents

Abstract

The utility model relates to an exhaust -gas turbocharger, including first intake pipe, second intake pipe, compressor impeller, blast pipe, tail gas filter equipment, turbine wheel, air intake branch and air mass flow meter, the one end of second intake pipe is linked together with the one end of first intake pipe, the other end of second intake pipe is linked together with the air inlet of engine, compressor impeller install in the second intake pipe, the gas vent of one end and engine of blast pipe be linked together, tail gas filter equipment install on the other end of blast pipe, turbine wheel install in the blast pipe, turbine wheel and the coaxial linkage of compressor impeller, the one end of air intake branch be linked together through pressure valve and first intake pipe, the other end of the other end and first intake pipe of air intake branch in respectively install an air mass flow meter. This design has simple structure, easily makes and practical efficient advantage.

Description

exhaust turbocharger

technical field

The utility model relates to a supercharger, in particular to an exhaust turbocharger.

Background technique

An exhaust turbocharger consists of a turbine and a compressor. The turbine inlet is connected to the engine exhaust manifold, and the exhaust port is connected to the exhaust pipe; the compressor inlet is connected to the air filter, and the exhaust port is connected to the intake manifold. What is discharged from the exhaust manifold of the engine is high-temperature and high-pressure exhaust gas, which has a certain amount of energy; in a naturally aspirated engine, this part of energy is often wasted with the emission of exhaust gas. The power source of the exhaust gas turbocharger is mainly these exhaust gases. The turbine wheel is rigidly connected to the compressor wheel through the supercharger shaft, which is called the supercharger rotor. The supercharger rotor is fixed in the supercharger through floating bearings (which can ensure a small frictional resistance torque when the rotor rotates at high speed). When the engine is working, the exhaust gas hits the turbine impeller at a high speed at a certain angle, causing the supercharger rotor to rotate at a high speed (up to 20104 rpm). The high-speed rotation of the compressor impeller increases the air pressure in the intake manifold of the engine to achieve a supercharging effect. In this way, during the intake process, the air is under greater pressure, so that more and denser air enters the cylinder. However, as the engine is used for a long time, when the intake manifold of the engine or the intake pipe of the exhaust turbocharger is blocked, the air pressure in the intake manifold and the intake pipe will be too high, which will affect the exhaust turbocharger. Its own structure poses a safety hazard.

Contents of the invention

The technical problem to be solved by the utility model is that when the mouth of the first air intake pipe is blocked, the pressure valve will automatically open, and the air will be fed through the air intake branch pipe, so that the turbocharger can continue to work normally, and its performance is improved. Practical performance; providing an exhaust turbocharger.

In order to solve the above-mentioned technical problems, the structure of the utility model includes

first intake pipe,

A second air intake pipe, one end of the second air intake pipe communicates with one end of the first air intake pipe, and the other end of the second air intake pipe communicates with the air intake of the engine,

The compressor impeller, the compressor impeller is installed in the second air intake pipe,

Exhaust pipe, one end of the exhaust pipe communicates with the exhaust port of the engine,

Exhaust gas filtering device, the exhaust gas filtering device is installed on the other end of the exhaust pipe,

Turbine impeller, the turbine impeller is installed in the exhaust pipe, the turbine impeller 5 is coaxially linked with the compressor impeller,

An intake branch pipe, one end of the intake branch pipe communicates with the first intake pipe through a pressure valve,

An air flow meter, an air flow meter is respectively installed in the other end of the air intake branch pipe and the other end of the first air intake pipe.

Further: the pressure valve includes a valve body, a valve core, a cylinder, a guide groove and a pressure sensor, the guide groove is a semi-closed groove body, the guide groove communicates with the bottom of the valve body, and the The valve core is movably connected in the guide groove, the cylinder is installed at the bottom of the guide groove, the cylinder is connected to the bottom of the valve core, and the top of the valve body is provided with a valve core relative to the position of the guide groove. Matching card slot, the pressure sensor is arranged in the end of the valve body connected with the first intake pipe.

Still further: a throttle valve is installed in the second intake pipe.

Still further: the exhaust gas filtering device is an activated carbon filter.

After adopting the above-mentioned structure, the utility model has the advantages of simple structure, easy manufacture, practicality and high efficiency; and when the nozzle of the first air intake pipe is blocked, the pressure valve will automatically open, and the intake air will be carried out through the air intake branch pipe, so that the turbine The supercharger can continue to work normally, which improves its practical performance.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the pressure valve.

detailed description

A kind of exhaust turbocharger as shown in Figure 1, comprises first intake pipe 1, second intake pipe 3, compressor impeller 6, exhaust pipe 4, exhaust gas filtering device 12, turbine impeller 5, intake branch pipe 2 and an air flow meter 8, one end of the second air intake pipe 3 communicates with one end of the first air intake pipe 1, the other end of the second air intake pipe 3 communicates with the air intake of the engine 7, and the The compressor impeller 6 is installed in the second intake pipe 3, and one end of the exhaust pipe 4 communicates with the exhaust port of the engine 7, and the exhaust gas filtering device 12 is installed on the other end of the exhaust pipe 4, The turbine impeller 5 is installed in the exhaust pipe 4, the turbine impeller 5 is coaxially linked with the compressor impeller 6, and one end of the intake branch pipe 2 communicates with the first intake pipe 1 through a pressure valve 13 , the other end of the air intake branch pipe 2 and the other end of the first air intake pipe 1 are each equipped with an air flow meter 8, the second air intake pipe 3 is equipped with a throttle valve 11, and the exhaust gas filter Device 12 is an activated carbon filter. When the engine is working, the exhaust gas impacts the turbine impeller 5 at a high speed at a certain angle, causing the turbine impeller 5 to rotate at a high speed. Since the turbine impeller 5 and the compressor impeller 6 are coaxially linked, the compressor impeller 6 will also follow the turbine impeller 5 at a high speed. Rotation, the high-speed rotation of the compressor impeller 6 makes the air pressure in the second intake pipe 3 rise to achieve a supercharging effect. In this way, during the intake process, the air is under greater pressure, so that more and denser air enters the cylinder. In this way, the fuel can be burned more fully, and the performance of the engine will be improved to a higher level. When the mouth of the first air intake pipe 1 is blocked, the pressure valve 13 will be automatically opened, and the air will be fed through the air intake branch pipe 2, so that the turbocharger can continue to work normally and its practical performance is improved. And this design is equipped with tail gas filtering device 12 at the pipe outlet of exhaust pipe 4, carries out impurity removal to tail gas by active carbon filter, prevents from polluting surrounding environment.

Pressure valve 13 as shown in Figure 2 comprises valve body 14, spool 17, cylinder 18, guide groove 15 and pressure sensor 19, and described guide groove 15 is a semi-closed groove body, and described guide groove 15 and valve The bottom of the body 14 is connected, the valve core 17 is movably connected in the guide groove 15, the cylinder 18 is installed at the bottom of the guide groove 15, and the cylinder 18 is connected to the bottom of the valve core 17. The top of the valve body 14 is provided with a card slot 16 matching the valve core 17 relative to the position of the guide groove 15 , and the pressure sensor 19 is arranged in the end of the valve body 14 connected to the first intake pipe 1 . When blockage occurs in the first intake pipe 1, the pressure sensor 19 will automatically send a signal to the controller, and the controller will start the cylinder 18 to make the valve core 17 move down along the guide groove 15, so that the second intake pipe 3 will pass through the first intake pipe 1. An intake pipe 1 communicates with the intake branch pipe 2, through which the intake air is carried out, so that the turbocharger can continue to work normally and improve its practical performance; and this design also has the advantages of simple structure, easy manufacture and practicality. Efficient advantages.

Claims (4)

1. an exhaust turbine supercharger, it is characterised in that: include

First air inlet pipe (1),

Second air inlet pipe (3), one end of described second air inlet pipe (3) and one end phase of the first air inlet pipe (1) Connection, the other end of described second air inlet pipe (3) is connected with the air inlet of electromotor (7),

Compressor impeller (6), described compressor impeller (6) is arranged in the second air inlet pipe (3),

Exhaustor (4), one end of described exhaustor (4) is connected with the air vent of electromotor (7),

Tail gas filter (12), described tail gas filter (12) is arranged on the other end of exhaustor (4) On,

Turbine wheel (5), described turbine wheel (5) is arranged in exhaustor (4), described turbine Machine impeller (5) and compressor impeller (6) coaxial linkage,

Air intake branch (2), one end of described air intake branch (2) is by pressure valve (13) and the first air inlet pipe (1) it is connected,

Mass air flow sensor (8), the other end of described air intake branch (2) and the other end of the first air inlet pipe (1) One mass air flow sensor (8) is respectively installed.

Exhaust turbine supercharger the most according to claim 1, it is characterised in that: described pressure valve (13) Including valve body (14), spool (17), cylinder (18), gathering sill (15) and pressure transducer (19), institute The gathering sill (15) stated is semi-enclosed cell body, described gathering sill (15) and the end of valve body (14) Portion is connected, and described spool (17) is movably connected in gathering sill (15), described cylinder (18) Being arranged on the bottom land of gathering sill (15), described cylinder (18) is connected to the bottom of spool (17), described Top in valve body (14) offers the card matched with spool (17) relative to the position of gathering sill (15) Groove (16), described pressure transducer (19) is arranged on one end that valve body (14) is connected with the first air inlet pipe (1) In.

Exhaust turbine supercharger the most according to claim 1, it is characterised in that: the second described air inlet In pipe (3), air throttle (11) is installed.

Exhaust turbine supercharger the most according to claim 1, it is characterised in that: described tail gas filtering dress Putting (12) is active carbon filter.