Intake valve actuator
By designing an intake valve actuator with a motor, a speed reduction mechanism and a position sensor, the problem of difficulty in accurately controlling the exhaust gas intake amount in the prior art is solved, and the engine and exhaust gas flow rate are matched, and the engine fuel consumption and exhaust gas emissions are reduced.
Patent Information
- Application Number
- CN202421599425.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-07-08
AI Technical Summary
The intake valves in the existing turbocharged exhaust gas circulation system are difficult to accurately control the exhaust gas intake, resulting in the engine condition and the exhaust gas flow rate, which increases the engine fuel consumption.
An intake valve actuator including a motor, a speed reduction mechanism and a position sensor is designed. The motor drives the speed reduction mechanism through an electronic control device ECU to accurately control the opening of the exhaust gas damper.
Accurate control of the exhaust gas intake amount is achieved, matching it with the engine operating conditions, and reducing the engine's fuel consumption and exhaust emissions.
Smart Images
Figure CN222731634U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a component in a turbocharged exhaust gas circulation system, in particular to an intake valve actuator. Background Art
[0002] Turbocharger exhaust gas circulation system technology is widely used in automobile engines. The electronic control unit ECU is used to control the engine system. In the turbocharger mechanism, the main structures include supercharger, turbine, exhaust bypass valve, intake bypass valve, intercooler and variable intake manifold. Among them, the intake bypass valve is also the intake valve. The intake valve is mainly used for the intake control of exhaust gas in the exhaust gas circulation system. The damper at the valve port of the intake bypass valve needs to be driven and rotated by an actuator to control the intake volume. Generally, the actuator is controlled by the extension and contraction of the vacuum valve. Therefore, the intake volume is difficult to control accurately, resulting in the matching of the engine condition and the exhaust gas flow rate, which leads to increased fuel consumption of the engine. Utility Model Content
[0003] To solve the above problems, the purpose of the utility model is to provide an intake valve actuator that can accurately control the exhaust gas intake amount, so as to match the engine operating conditions under the control of the electronic control unit ECU to reduce engine fuel consumption and reduce exhaust gas emissions.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an intake valve actuator, comprising an outer shell with an upper opening, a motor installed in the outer shell, the motor being controlled by an electronic control unit ECU, and also comprising a cover plate, the cover plate covers and blocks the upper opening of the outer shell, a cavity is formed between the outer shell and the cover plate, a reduction mechanism is installed in the cavity, the reduction mechanism comprises a rotating shaft, a large gear with a larger outer diameter and a small gear with a smaller outer diameter are connected to the rotating shaft, an output gear is installed on the output shaft of the motor, the output gear is meshed with the large gear for transmission, a rotatable transmission shaft is installed on the cover plate, the front end of the transmission shaft passes through the cover plate and is configured as a square shaft, the tail end of the transmission shaft is connected to a fan gear, the fan gear is meshed with the pinion for transmission, a position sensor is arranged at the center axis of the fan gear, the position sensor is connected to the electronic control unit ECU signal, and a return spring is arranged between the fan gear and the cover plate.
[0005] A positioning groove is provided on the cover plate for inserting one end of the return spring, and the end of the return spring extends out and is hooked and connected with the inner wall of the positioning groove. An annular slot is provided on the end surface of the fan gear, and the other end of the return spring is inserted into the slot. The other end of the return spring is bent and extended out to be hooked and connected with the side wall of the slot.
[0006] The cover plate is made of aluminum, is connected to the outer shell by screws, and is provided with three mounting positioning grooves on the outer peripheral wall of the cover plate.
[0007] The position sensor comprises a magnet and a Hall sensor element. The magnet is mounted on the central axis of the fan gear, the Hall sensor element is mounted in the outer shell and close to the magnet, and the Hall sensor element is connected to the electronic control unit ECU.
[0008] The beneficial effect of the utility model is that the electronic control unit ECU controls the motor to drive the reduction mechanism and drive the transmission shaft to rotate according to the working condition of the engine and the position signal sent back by the position sensor through data processing, and the transmission shaft drives and controls the opening of the exhaust air valve, so that the intake volume of the exhaust gas can be accurately controlled to match the working condition of the engine, thereby reducing the fuel consumption of the engine and reducing the emission of exhaust gas.
[0009] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 A three-dimensional diagram of a specific implementation of the utility model;
[0011] Figure 2 It is an internal stereogram of a specific embodiment of the utility model;
[0012] Figure 3 It is a partial exploded view of a specific implementation method of the utility model. DETAILED DESCRIPTION
[0013] The present invention is specifically described below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the protection scope of the present invention.
[0014] like Figure 1 — Figure 3As shown, this embodiment discloses an intake valve actuator, which is drivingly connected to the valve stem of the intake valve in the exhaust gas circulation system to control the valve port opening, and includes an outer shell 1 with an upper opening, a motor 2 is installed in the outer shell 1, and the motor 2 is controlled by an electronic control device ECU, and also includes a cover plate 3, the cover plate 3 covers and blocks the upper opening of the outer shell 1, a cavity is formed between the outer shell 1 and the cover plate 3, a cover reduction mechanism 4 is installed in the cavity, and the cover reduction mechanism 4 includes a rotating shaft 41, and a large gear 42 with a larger outer diameter and a small gear with a smaller outer diameter are connected to the rotating shaft 41 Wheel 43, an output gear 5 is installed on the output shaft of the motor 2, and the output gear 5 is meshed with the large gear 42 for transmission. A rotatable transmission shaft 6 is installed on the cover plate 3, and the front end of the transmission shaft 6 passes through the cover plate 3 and is configured as a square shaft 61, which can be transmitted by a matching transmission member to facilitate the output of torque. A fan gear 7 is connected to the rear end of the transmission shaft 6, and the fan gear 7 is meshed with the small gear 43 for transmission. A position sensor 9 is arranged at the center axis of the fan gear 7, and the position sensor 9 is connected to the electronic control unit ECU signal, and a return spring 8 is arranged between the fan gear 7 and the cover plate 3.
[0015] A positioning groove 31 is provided on the cover plate 3 for inserting one end of the return spring 8, the end of the return spring 8 extends out and is hooked and connected with the inner wall of the positioning groove 31, and an annular slot 71 is provided on the end surface of the fan gear 7, the other end of the return spring 8 is inserted into the slot 71, and the other end of the return spring 8 is bent and extended out to be hooked and connected with the side wall of the slot 71. This structure can make the installation of the return spring 8 more reliable, and the return spring 8 can not only ensure the stability of the positioning of the fan gear 7, but also ensure that the fan gear 7 is not easy to shake during rotation, making its rotation more stable.
[0016] The cover plate 3 is made of aluminum and is connected to the outer shell 1 by screws. Three installation positioning grooves 32 are arranged on the outer peripheral wall of the cover plate 3. The installation positioning grooves 32 can be plugged into the positioning rods in the engine compartment to achieve positioning. The installation positioning grooves 32 can make positioning faster during installation, improve the installation speed and prevent the shaking of the entire actuator.
[0017] The position sensor 9 includes a magnet and a Hall sensor element 91. The magnet is mounted on the central axis of the fan gear 7. The Hall sensor element is mounted in the outer shell 1 and close to the magnet. The Hall sensor element is connected to the electronic control device ECU. In this way, the electronic control device ECU can monitor the position of the magnet in real time. The magnet is mounted on the fan gear 7, the fan gear 7 is connected to the transmission shaft 6, and the transmission shaft 6 is connected to the exhaust air door in a transmission manner, so that the electronic control device ECU can monitor the opening of the exhaust air door in real time.
[0018] By adopting the above technical solution, the electronic control unit ECU processes data according to the working condition of the engine and the position signal sent back by the position sensor 9, controls the motor 2 to drive the cover reduction mechanism 4 and drives the transmission shaft 6 to rotate, and the transmission shaft 6 controls the opening of the exhaust air valve. In this way, the intake volume of the exhaust gas can be accurately controlled to match the working condition of the engine, thereby reducing the fuel consumption of the engine and reducing the emission of exhaust gas.
[0019] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0020] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. An intake valve actuator, comprising an outer shell with an upper opening, a motor installed in the outer shell, the motor being controlled by an electronic control unit ECU, characterized in that: It also includes a cover plate, which covers and blocks the upper opening of the outer shell, and a cavity is formed between the outer shell and the cover plate. A speed reduction mechanism is installed in the cavity, and the speed reduction mechanism includes a rotating shaft, and a large gear with a larger outer diameter and a small gear with a smaller outer diameter are connected to the rotating shaft. An output gear is installed on the output shaft of the motor, and the output gear is meshed with the large gear for transmission. A rotatable transmission shaft is installed on the cover plate, and the front end of the transmission shaft passes through the cover plate and is configured as a square shaft. The rear end of the transmission shaft is connected with a fan gear, and the fan gear is meshed with the small gear for transmission. A position sensor is arranged at the central axis of the fan gear, and the position sensor is connected to the electronic control unit ECU signal, and a return spring is arranged between the fan gear and the cover plate.
2. The intake valve actuator according to claim 1, characterized in that: A positioning groove is provided on the cover plate for inserting one end of the return spring, and the end of the return spring extends out and is hooked and connected with the inner wall of the positioning groove. An annular slot is provided on the end surface of the fan gear, and the other end of the return spring is inserted into the slot. The other end of the return spring is bent and extended out to be hooked and connected with the side wall of the slot.
3. The intake valve actuator according to claim 1, characterized in that: The cover plate is made of aluminum, is connected to the outer shell by screws, and is provided with three mounting positioning grooves on the outer peripheral wall of the cover plate.
4. The intake valve actuator according to claim 1, characterized in that: The position sensor comprises a magnet and a Hall sensor element. The magnet is mounted on the central axis of the fan gear, the Hall sensor element is mounted in the outer shell and close to the magnet, and the Hall sensor element is connected to the electronic control unit ECU.