JP3215654U - Supercharge and pressure accumulation structure for all-terrain universal or multi-purpose vehicles - Google Patents

Abstract

A supercharging and accumulating structure for an all-terrain universal vehicle or a multi-purpose vehicle is provided. An intake passage 111 and an exhaust passage 112 are provided in a cylinder 11 of an engine body 1. The storage chamber 211 of the supercharger 21 has an inlet 212 and an outlet 213. The plenum chamber 23 is provided between the cylinder 11 and the supercharger 21 and includes an air chamber 231. The input side 232 of the air chamber 231 is connected to the outlet 213 of the supercharger 21. Both ends of the intake manifold 25 are connected to the output side 233 of the air chamber 231 and the intake passage 111 of the cylinder 11. The injection nozzle 26 communicates with the intake passage 111 and is connected to the vehicle body oil supply conduit. The supercharged air flow generated by the supercharger 21 during the operation of the engine body 1 is introduced into the input side 232 from the outlet and enters the air chamber 231, and is introduced into the intake manifold 25 from the output side 233. It can be introduced into the cylinder 11 according to the fuel oil. Therefore, there is an effect of increasing the supercharging and the stability of operation. [Selection] Figure 1

Description

  The present invention relates to a supercharging and accumulating structure for an all-terrain universal vehicle or a multi-purpose vehicle, and more particularly, to a structure for improving the supercharging stability of engine output.

  The all-terrain universal vehicle ATV or the multi-purpose vehicle UTV is a transportation tool for people to enjoy leisure and sports, and can run on rough terrain through its excellent chassis suspension system design.

  The all-terrain universal vehicle ATV or the multi-purpose vehicle UTV generally uses engine power, and the engine mainly includes an assembly such as a cylinder, a piston, a crankshaft, and a valve, and introduces air and gasoline into the cylinder. The piston operation is pushed through compression and combustion, and mechanical energy is generated, and then the exhaust gas is discharged, and the engine has horsepower and torque corresponding to the cylinder displacement.

  However, the volume of the all-terrain universal vehicle ATV or the multi-purpose vehicle UTV is smaller than that of a general automobile and the engine displacement used is relatively small, so that the output performance is relatively low and the performance requirements are relatively low. There are defects that cannot meet the high user demand, and the engine can be equipped with a supercharger, but the supercharger still has the potential of causing the engine power to be unstable.

  Accordingly, an object of the present invention is to provide a supercharging and pressure accumulating structure that enhances the supercharging stability of the engine output of the all-terrain universal vehicle ATV or the multi-purpose vehicle UTV.

  The present invention includes an engine body, a supercharger, a plenum chamber, an intake manifold, and at least one injection nozzle. The engine body includes a cylinder, and an intake passage and an exhaust passage are provided in the cylinder. The supercharger includes a storage chamber, the storage chamber has an introduction port and a discharge port, and can introduce air into the storage chamber to generate a supercharged airflow. The plenum chamber is provided between the cylinder and the supercharger and includes an air chamber. The air chamber has an input side and an output side, and the input side of the air chamber is connected to the outlet of the supercharger. Both ends of the intake manifold are connected to the output side of the air chamber of the plenum chamber and the intake passage of the cylinder. The injection nozzle communicates with the intake passage of the cylinder and is connected to the vehicle body oil supply conduit. Through this, the supercharged air generated by the supercharger during operation of the engine body is introduced from the outlet to the input side of the plenum chamber before entering the air chamber of the plenum chamber, and from the output side of the plenum chamber to the intake manifold And can be introduced into the cylinder according to the fuel oil ejected from the injection nozzle. It also enhances engine output performance through supercharged airflow, and the plenum chamber can provide a pressure accumulator and a buffer between the supercharger and the cylinder. By introducing a stable supercharged airflow into the plenum chamber when the engine output changes, the stability of engine operation can be improved.

  The supercharger of the present invention can be a mechanical supercharger or a turbocharger and includes a throttle valve. For example, a turbine machine or other guide device that guides airflow is provided in the turbocharger accommodating chamber, and the throttle valve is provided at the inlet position of the supercharger.

  The present invention further includes a control valve. The supercharger is provided with a conduit at the inlet position, the conduit is connected to the input side of the plenum chamber, and the control valve is provided on the conduit. The control valve can be fully closed when the accelerator is on, and the control valve can be fully opened when the accelerator is off or idling.

  Preferably, the present invention includes two spray nozzles. The two injection nozzles can simultaneously introduce fuel oil into the cylinder.

  In the present invention, when the engine body is moved by stepping on the accelerator, the control valve is closed, and external air is supercharged by entering the accommodation chamber via the throttle valve and the inlet of the turbocharger, and further from the outlet port to the plenum. Enter the chamber. Then, the fuel oil introduced from the plenum chamber into the intake manifold and derived from the two injection nozzles is mixed and introduced into the cylinder. The plenum chamber can provide a pressure accumulator and a buffer between the turbocharger and the cylinder, can direct the air into the intake manifold and cylinder, and the two injection nozzles compare to the supercharged air The engine output efficiency can be increased by injecting large fuel oil.

  In the present invention, when the accelerator is off or idling, the throttle valve is adjusted to allow a small amount of external air to enter the supercharger. At this time, the control valve is opened and the conduit is connected to the supercharger inlet and the plenum chamber. By forming a bypass line communicating with the outlet of the turbocharger and balancing the pressure at the inlet and outlet of the turbocharger, the turbocharger at the time of accelerator off or idling is operated with labor savings, and the influence on engine performance In addition, air can be introduced into the intake manifold and the cylinder via the plenum chamber, and the plenum chamber can accumulate pressure to hold the accelerator off or idling pressure. Furthermore, the control valve can be closed when the accelerator is turned on to open the throttle valve to a relatively large opening, and the pressure in the plenum chamber can be quickly introduced into the cylinder to improve acceleration performance.

1 is a partially exploded view of an engine according to the present invention. It is an assembly three-dimensional view of an engine according to the present invention. It is a schematic diagram which shows the path | route of the supercharging intake of the engine by this invention, an accelerator off, or idling intake. It is a schematic diagram which shows the path | route of the supercharging intake of the engine by this invention, an accelerator off, or idling intake.

  Referring to FIGS. 1 and 2, the present invention is a supercharging structure for an all-terrain universal vehicle or a multipurpose vehicle (hereinafter referred to as a vehicle), and includes an engine body 1, a supercharger 21, a throttle valve 22, and a plenum chamber 23. And an intake manifold 25 and two injection nozzles 26. The engine body 1 includes a cylinder 11 and a crankshaft 12. An intake passage 111 and an exhaust passage 112 are provided in the cylinder 11. An intake valve and an exhaust valve (not shown) are provided in the intake passage 111 and the exhaust passage 112, respectively. The cylinder 11 is provided with a piston (not shown). The cylinder 11 is combusted in conjunction with the crankshaft 12 to perform intake, air compression, explosion, and exhaust operations, and the crankshaft 12 can be rotated in conjunction with the piston reciprocating.

  The supercharger 21 includes a storage chamber 211, and the storage chamber 211 has an introduction port 212 and a discharge port 213. An introduction port 212 is connected to the throttle valve 22. A conduit 214 is provided at the position of the inlet 212. The conduit 214 is connected to the plenum chamber 23 and the conduit 214 is provided with a control valve 24. The control valve 24 can be a vacuum valve. In addition, an impeller or other guide device (not shown) is provided in the storage chamber 211 and interlocks with the crankshaft 12 of the engine body 1 to operate the impeller or other guide device in conjunction with the operation of the engine. Thus, the external airflow is introduced into the inlet 212 and the storage chamber 211 by the throttle valve 22.

  The plenum chamber 23 is provided between the cylinder 11 and the supercharger 21 and includes an air chamber 231. An input side 232 of the air chamber 231 is connected to the outlet 213 and the conduit 214 of the supercharger 21. An intake manifold 25 communicating with the output side 233 of the air chamber 231 communicates with the intake passage 111 of the cylinder 11. The injection nozzle 26 can be connected to a vehicle body oil supply line (not shown) so that the air in the air chamber 231 is mixed with fuel oil and introduced into the cylinder 11.

  Referring to FIGS. 1, 3 and 4, the double arrow shown in the figure indicates the supercharging intake direction, and the single arrow indicates the natural intake direction of the accelerator off or idling of the vehicle. The crankshaft 12 and the supercharger 21 are operated in conjunction with the operation of a piston (not shown) of the engine body 1 of the present embodiment to generate pressure in the storage chamber 211 of the supercharger 21. Further, when the accelerator is on, the control valve 24 is closed, and external air enters the storage chamber 211 via the throttle valve 22 and the inlet 212 of the supercharger 21 and is supercharged, and then is discharged from the outlet 213 into the plenum chamber 23. And is introduced into the intake manifold 25 from the plenum chamber 23 and mixed with the fuel oil led out by the two injection nozzles 26 and introduced into the cylinder 11. The plenum chamber 23 provides a buffer between the accumulator and supercharger 21 and the cylinder 11 and can be controlled to allow air to enter the intake manifold 25 and the cylinder 11. The exhaust gas after combustion in the cylinder 11 can be discharged from the exhaust passage 112, and the two injection nozzles 26 eject a relatively large fuel oil in accordance with the supercharged air, thereby improving the engine output efficiency. be able to.

  In this embodiment, the throttle valve 22 is adjusted to put a small amount of external air into the supercharger 21 when the accelerator is off or idling. At this time, a negative pressure is generated in the supercharger 21, the control valve 24 is opened, and a bypass pipe communicating with the conduit 214 through the inlet 212 of the supercharger 21 and the plenum chamber 23 and the outlet 213 of the supercharger 21. To form. The pressure at the inlet 212 and the outlet 213 of the turbocharger 21 is balanced, and the turbocharger 21 is operated with power saving at the time of accelerator off or idling to prevent the influence on the engine performance, and the air makes the plenum chamber 23 Via the intake manifold 25 and the cylinder 11, the plenum chamber 23 can accumulate pressure to hold the accelerator-off or idling pressure.

  In the present invention, when the accelerator is on, the control valve 24 is closed and the throttle valve 22 is opened to a relatively large opening so that the pressure in the plenum chamber 23 can be quickly introduced into the cylinder 11 to improve acceleration performance. .

Therefore, in summary, the present embodiment can greatly improve the engine efficiency and supercharging operation stability of the all-terrain universal vehicle AVT and the multi-purpose vehicle UTV, and satisfy the driver's requirements for vehicle performance. Can do. The present embodiment has a mechanical supercharging structure, and the turbocharger of the present embodiment can also communicate with the exhaust passage of the cylinder and use a turbocharging structure.
The above embodiment is an example of the present invention, and does not limit the present invention. Modifications within the equivalent range made based on the spirit of the present invention also belong to the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Engine main body 11 Cylinder 111 Intake passage 112 Exhaust passage 12 Crankshaft 21 Supercharger 211 Storage chamber 212 Inlet 213 Outlet 214 Conduit 22 Throttle valve 23 Plenum chamber 231 Air chamber 232 Input side 233 Output side 24 Control valve 25 Intake manifold 26 Injection nozzle

Claims (6)

An engine body including a cylinder, the cylinder including an intake passage and an exhaust passage;
A supercharger comprising a storage chamber, wherein the storage chamber has an introduction port and a discharge port, and can introduce air into the storage chamber to generate a supercharged airflow;
A plenum provided between the cylinder and the supercharger, including an air chamber, the air chamber having an input side and an output side, wherein the input side of the air chamber is connected to the outlet of the supercharger A chamber;
An intake manifold, each of which is connected to the output side of the air chamber of the plenum chamber and the intake passage of the cylinder;
At least one injection nozzle communicating with the intake passage of the cylinder and connected to a vehicle body oil supply line;
Supercharging and accumulating structure for all-terrain universal vehicle or multi-purpose vehicle including
A supercharged air flow generated by the supercharger during operation of the engine body is introduced into the input side of the plenum chamber first from the outlet to enter the air chamber of the plenum chamber, and the plenum chamber A supercharging and pressure accumulating structure for an all-terrain vehicle or a multipurpose vehicle, which can be introduced into the intake manifold from the output side and introduced into the cylinder in accordance with the fuel oil ejected from the injection nozzle.   The supercharger for an all-terrain universal vehicle or a multipurpose vehicle according to claim 1, wherein a guide device for guiding an air flow is provided in the accommodation chamber of the supercharger, and the guide device is interlocked with the engine body. And pressure accumulation structure.   The supercharging and accumulating structure for an all-terrain vehicle or a multipurpose vehicle according to claim 1 or 2, further comprising a throttle valve, wherein the throttle valve is provided at the introduction port position of the supercharger. .   And further comprising a control valve, wherein the supercharger is provided with a conduit at the inlet position, the conduit is connected to the input side of the plenum chamber, and the control valve is provided on the conduit when the accelerator is on. The supercharging and pressure accumulating structure for an all-terrain universal vehicle or a multipurpose vehicle according to claim 3, wherein the control valve is fully closed and the control valve can be fully opened when the accelerator is off or idling.   The supercharging and pressure accumulating structure for an all-terrain vehicle or a multipurpose vehicle according to claim 4, wherein the control valve is a vacuum valve.   3. The supercharging of the all-terrain universal vehicle or the multipurpose vehicle according to claim 1, wherein two injection nozzles are included, and the two injection nozzles can simultaneously introduce fuel oil into the cylinder. Accumulation structure.

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