CN201326455Y - Power-turbine dual air inlet pressurization device for engine - Google Patents

Abstract

An electric and turbo dual-intake supercharging device for an engine is characterized in that an air filter, an electric supercharger, one end of a turbine intake bypass valve and a turbocharger are sequentially connected through an intake pipe, and the turbocharger is connected to the turbocharger. The other end of the air bypass valve bypasses the turbocharger and connects to the throttle valve, the throttle valve is connected to the intake manifold, the intake manifold is connected to the cylinder, and the cylinder is respectively connected to the turbocharger and the exhaust bypass valve through the outlet manifold. On one end, the wastegate bypasses the turbocharger and connects to the exhaust pipe on the other end. The technical effects of the utility model are: 1. It solves the problem that the turbocharger cannot provide compressed air during engine startup and idling; 2. It solves the problem that the engine is difficult to start under low temperature conditions.

Description

An electric and turbo dual-intake supercharging device for an engine

technical field

The utility model relates to a supercharging device, in particular to an electric and turbo double-intake supercharging device for an engine.

Background technique

Exhaust gas turbocharger is an important component used to improve engine power and reduce emissions, and has been widely used in the engine industry. The exhaust gas turbocharger uses the huge exhaust energy of the engine to drive the turbine to rotate at a high speed to increase the air intake of the engine. The exhaust gas turbocharger is installed on the exhaust pipe of the engine. The high-temperature and high-pressure exhaust gas discharged from the engine cylinder drives the turbine impeller to rotate, drives the compressor impeller to rotate at high speed, and pressurizes the air passing through the air filter into the cylinder. Because more air enters the cylinder, it allows more fuel to be injected or the fuel to be burned more fully, so that the engine can generate more power or reduce emissions. Since the turbocharger can use the exhaust gas energy to improve the intake efficiency, it can make the engine get power compensation when working on the plateau and reduce the plateau power loss. However, when the engine is idling, the speed is often only a few hundred revolutions, and the exhaust energy of the engine is not enough to drive the turbine wheel to rotate at a high speed, so the turbocharger cannot intervene in the work. Generally, turbocharged engines do not have bypass valves for intake and exhaust. Under idling conditions, the bypass valves for intake and exhaust are automatically opened, and the intake and exhaust do not pass through the turbocharger. At this time, the engine's The working state is equivalent to a naturally aspirated engine, the fresh air is directly sucked into the cylinder, and the exhaust gas is also directly discharged into the atmosphere.

Under plateau environmental conditions, due to the thin air, especially when the altitude is greater than 4000m, the oxygen content in the atmosphere is only 60% of that of the plain, and when the engine is starting and idling, the turbocharger cannot play a role in improving the intake air. Even if the turbocharged engine still has the problem of starting difficulty at high altitudes, and under high altitude and low temperature conditions, the engine only relies on the amount of naturally aspirated air, resulting in insufficient starting explosive power, which also makes it difficult to start the engine at low temperature.

Contents of the invention

The purpose of the utility model is to provide an electric and turbo double-intake supercharging device for an engine, which is beneficial to improving the environmental adaptability of the engine and effectively improving the starting performance of the engine at low temperature.

The utility model is realized in this way, it comprises intake pipe, air filter, electric supercharger, turbine intake bypass valve, turbocharger, damper, intake manifold, cylinder, outlet manifold, Exhaust bypass valve, muffler, exhaust pipe, intake bypass valve, characterized in that the impeller of the turbocharger is connected to the throttle valve, and the air filter, the electric supercharger, and the intake air of the turbocharger are connected in sequence through the intake pipe One end of the bypass valve and the turbocharger, the other end of the turbo intake bypass valve bypasses the turbocharger and connects to the throttle valve, the throttle valve is connected to the intake manifold, the intake manifold is connected to the cylinder, and the cylinder passes through the outlet manifold Connect one end of the turbocharger and exhaust bypass valve respectively, the other end of the exhaust bypass valve bypasses the turbocharger and connects to the exhaust pipe, the turbocharger is connected to the muffler through the exhaust pipe, and the electric supercharger Connect intake bypass valves in parallel.

The technical effects of the utility model are: 1. It solves the problem that the turbocharger cannot provide compressed air during engine startup and idling; 2. It solves the problem that the engine is difficult to start under low temperature conditions.

Description of drawings

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

In the figure, 1. Intake pipe 2. Air filter 3. Electric supercharger 4. Turbo intake bypass valve 5. Turbocharger 6. Throttle valve 7. Intake manifold 8. Cylinder 9. Exhaust gas Manifold 10. Exhaust bypass valve 11. Muffler 12. Exhaust pipe 13. Intake bypass valve

Detailed ways

As shown in Figure 1, the utility model is realized in this way, it comprises intake pipe 1, air cleaner 2, electric supercharger 3, turbine intake bypass valve 4, turbocharger 5, throttle valve 6 , intake manifold 7, cylinder 8, outlet manifold 9, exhaust bypass valve 10, muffler 11, exhaust pipe 12, intake bypass valve 13, it is characterized in that the impeller of turbocharger 5 is connected to throttle The valve 6 is connected to the air filter 2, the electric supercharger 3, one end of the turbine intake bypass valve 4 and the turbocharger 5 in sequence through the intake pipe 1, and the other end of the turbine intake bypass valve 4 bypasses the turbine The supercharger 5 is connected to the throttle valve 6, the throttle valve 6 is connected to the intake manifold 7, the intake manifold 7 is connected to the cylinder 8, and the cylinder 8 is respectively connected to the turbocharger 5 and the exhaust bypass valve 10 through the outlet manifold 9. At one end, the other end of the exhaust bypass valve 10 bypasses the turbocharger 5 and connects to the exhaust pipe 12, the turbocharger 5 is connected to the muffler 11 through the exhaust pipe 12, and the electric supercharger 3 is connected in parallel to the intake bypass valve 13.

The working principle of the electric and turbo dual-intake supercharging system: when the engine starts, the electric supercharging device is controlled by the microcomputer to be energized, and the engine speed sensor detects that the speed is in an idle state, and the intake bypass valve is closed at this time , the fresh air from the air filter is supercharged by the electric supercharger, the intake bypass valve at the turbocharger is in an open state, and the compressed air from the electric supercharger bypasses the turbocharger, It directly enters the intake manifold from the intake bypass valve, so that the engine can obtain a more sufficient amount of compressed air when starting compared with the natural aspirating condition. In the plateau environment, the intake air volume of the engine can be maintained at an atmospheric pressure, and the air intake volume of the engine can be naturally aspirated below 1000m when the plateau is started, thereby improving the starting performance of the plateau environment. At the same time, the exhaust bypass valve on the turbocharger side of the exhaust line is open. Exhaust gases are discharged directly to the atmosphere, bypassing the turbocharger, where the intake and exhaust gases of the engine do not pass through the turbocharger. Especially in low temperature conditions, when the engine itself is idling, the turbine cannot intervene in the work, and cannot provide the corresponding air volume, and the surrounding fresh air temperature is low. After using the electric supercharging device, it can provide sufficient compression for the engine Air, after the fresh air is compressed by the electric supercharging device, the temperature of the combustion air is greatly improved compared with the surrounding environment, which helps to improve the starting performance of the engine under low temperature conditions.

When the engine starts successfully, it will turn to the rated speed to run. At this time, it is detected by the speed sensor as full speed. The intake bypass valve at the electric supercharger is in the open state. The electric supercharger loses power at the same time and stops running. The intake bypass valve at the end of the exhaust gas is closed, and the exhaust bypass valve at the exhaust gas end is closed. The exhaust gas from the engine is used as high-speed power to drive the turbine of the turbocharger (in the exhaust pipe), and the turbine drives the coaxial impeller. Compress fresh air (in the intake pipe) and then send it into the cylinder. Since the engine speed is at full speed, the exhaust gas discharge speed and the turbine speed are also accelerated synchronously, and the degree of air compression is increased. Increase, you can increase the output power of the engine.

Claims (1)

1, a kind of electronic and turbo double-intake supercharging device that is used for motor, it comprises suction tude, air-strainer, electric booster, turbine air inlet bypass valve, turbosupercharger, air throttle, intake manifold, cylinder, the manifold of giving vent to anger, exhaust by-pass valve, baffler, outlet pipe, the air inlet bypass valve, the impeller that it is characterized in that turbosupercharger connects air throttle, by the suction tude air-strainer that is linked in sequence, electric booster, one end and the turbosupercharger of turbine air inlet bypass valve, the other end of turbine air inlet bypass valve is walked around turbosupercharger and is connected air throttle, air throttle connects intake manifold, intake manifold connects cylinder, cylinder connects an end of turbosupercharger and exhaust by-pass valve respectively by the manifold of giving vent to anger, the other end of exhaust by-pass valve is walked around turbosupercharger and is connected outlet pipe, turbosupercharger connects baffler by outlet pipe, the electric booster air inlet bypass valve that is connected in parallel.

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