Turbocharger Actuator

Abstract

The utility model discloses a turbocharger actuator, including a housing, a motor is installed in the middle of the housing, a screw is connected to the hollow rotor of the motor, the rotation of the rotor drives the screw to move up and down after the motor is powered on, an output rod is arranged at the lower part of the screw, a threaded connection part is arranged at the end of the output rod, and a position sensor is arranged at the upper part of the screw. Then, the operation of the motor is accurately and reliably adjusted by the automobile ECU in a timely manner, so that the turbocharged state and the engine working condition are kept in the best matching state.

Description

Technical Field

[0001] The utility model relates to a component in an automobile turbocharger exhaust gas circulation system, in particular to a turbocharger actuator. Background Art

[0002] Turbocharging technology is widely used in automobile engines. The main structures of the turbocharging mechanism include supercharger, turbine, exhaust bypass valve, intake bypass valve, intercooler and variable intake manifold. The opening of the exhaust bypass valve and intake bypass valve needs to be adjusted in time according to the engine conditions. The opening adjustment of these valves requires a turbocharger actuator. The turbocharger actuator controls the intervention intensity of the turbine to match the engine working condition. However, the existing turbocharger actuator controls the valve opening and mostly adopts simple motor control with poor accuracy, so that the turbocharger state cannot maintain the best matching state with the engine working condition, so the car cannot achieve the effect of energy saving and environmental protection. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide a turbocharger actuator with accurate and reliable control, so as to keep the turbocharger state and the engine working condition in the best matching state.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a turbocharger actuator, comprising a shell, a motor is installed in the middle of the shell, the rotor of the motor is hollow and threaded with a screw, after the motor is energized, the rotation of the rotor drives the screw to move up and down, an output rod is arranged at the lower part of the screw, a threaded connection part is arranged at the end of the output rod, a position sensor device is arranged at the upper part of the screw, the position sensor device is connected to the automobile ECU, and the automobile ECU is connected to the motor.

[0005] The position sensing device comprises a bracket fixed in the shell, on which two vertically parallel silicon steel sheets are arranged, a pressure rod is arranged between the silicon steel sheets, a positioning seat is arranged at the tail end of the pressure rod, a magnet sheet is installed on the positioning seat, spring seats are respectively arranged on both sides of the positioning seat, a spring is arranged between the spring seat and the inner wall of the shell, the rod end at the front end of the pressure rod always keeps in contact with the end of the screw rod under the action of the spring, a Hall sensor is arranged on one of the silicon steel sheets, and the Hall sensor is connected to the automobile ECU.

[0006] An anti-rotation block is arranged on the output rod, and straight guide surfaces are arranged on the left and right sides of the anti-rotation block respectively. A guide channel matched with the anti-rotation block is arranged on the shell.

[0007] The beneficial effect of the utility model is that the turbocharger actuator can drive the output rod to extend and retract and control the extension and retraction stroke of the output rod by means of a motor driving the screw rod to extend and retract, and then the output rod drives the opening of the regulating valve, and the stroke of the output rod can transmit the position in the form of Hall voltage through a position sensor device to the automobile ECU for data processing, and then the automobile ECU can timely control the operation of the motor to make accurate and reliable adjustments, so that the turbocharger state and the engine working condition are kept in the best matching state.

[0008] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A three-dimensional diagram of a specific implementation of the utility model;

[0010] Figure 2 It is an internal stereogram of a specific embodiment of the utility model;

[0011] Figure 3 It is a partial stereogram of the internal structure in a specific implementation mode of the utility model;

[0012] Figure 4 It is a cross-sectional 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 4 As shown, this embodiment discloses a turbocharger actuator, including a housing 1, a motor 2 is installed in the middle of the housing 1, the motor 2 includes components such as a stator, a rotor, and a commutator, a rotor 21 of the motor 2 is hollow and threaded with a screw 3, after the motor 2 is energized, the rotation of the rotor 21 drives the screw 3 to move up and down, an output rod 4 is welded or arranged at the lower part of the screw 3, a threaded connection part 41 is arranged at the end of the output rod 4, the threaded connection part 41 is used to connect it to a transmission mechanism, and the opening of the valve in the turbocharger system is controlled by the transmission mechanism, a position sensor 5 is arranged at the upper part of the screw 3, the position sensor 5 is connected to the automobile ECU, and the automobile ECU is connected to the motor.

[0015] The position sensing device 5 includes a bracket 51 fixed in the housing 1, on which two vertically parallel silicon steel sheets 52 are arranged, a pressure rod 53 is arranged between the silicon steel sheets 52, a positioning seat 531 is arranged at the tail end of the pressure rod 53, a magnet sheet 54 is installed on the positioning seat 531, spring seats 55 are respectively arranged on both sides of the positioning seat 531, a spring 56 is arranged between the spring seat 55 and the inner wall of the housing 1, and the rod end at the front end of the pressure rod 53 always keeps in contact with the end of the screw 3 under the action of the spring 56, and a Hall sensor 57 is arranged on one of the silicon steel sheets 52, and the Hall sensor is connected to the automobile ECU. The Hall sensor 57 has a Hall element. When the magnet moves up and down between the two silicon steel sheets 52, the Hall element will sense the change in the strength of the magnetic field. Therefore, the Hall sensor will detect and generate a so-called Hall voltage. After the automobile ECU detects the voltage in real time, the automobile ECU will control the forward and reverse rotation of the conductive control motor 2 according to data processing, and then control the extension and retraction distance of the screw 3. The extension and retraction of the screw 3 controls the valve opening of the exhaust bypass valve and the intake bypass valve in the turbocharger exhaust gas circulation system, so that it can better match the engine operating conditions.

[0016] An anti-rotation block 42 is provided on the output rod 4, and a straight guide surface 420 is provided on the left and right sides of the anti-rotation block 42, and a guide channel adapted to the anti-rotation block 42 is provided on the housing 1. This structure can prevent the screw rod 3 from rotating, and ensure the stability of the screw rod 3 in telescopic operation.

[0017] By adopting the above technical solution, the turbocharger actuator can drive the output rod 4 to extend and retract and control the extension stroke of the output rod 4 by driving the screw rod 3 to extend and retract through the motor 2, so that the output rod 4 drives the opening of the regulating valve, and the stroke of the output rod 4 can be transmitted back to the automobile ECU in the form of Hall voltage through the position sensor 5 for data processing, and then the automobile ECU can make accurate and reliable adjustments to the operation of the motor 2 in a timely manner, so as to maintain the best matching state between the turbocharger state and the engine operating condition.

[0018] Of course, the turbocharger actuator can be used for adjusting the air flap in the turbocharger system.

[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. A turbocharger actuator, comprising a housing, a motor is mounted in the middle of the housing, and is characterized in that: The rotor of the motor is hollow and threaded with a screw. After the motor is energized, the rotation of the rotor drives the screw to move up and down. An output rod is arranged at the lower part of the screw, and a threaded connection part is arranged at the end of the output rod. A position sensor is arranged at the upper part of the screw, and the position sensor is connected to the automobile ECU, and the automobile ECU is connected to the motor.

2. The turbocharger actuator according to claim 1, characterized in that: The position sensing device comprises a bracket fixed in the shell, on which two vertically parallel silicon steel sheets are arranged, a pressure rod is arranged between the silicon steel sheets, a positioning seat is arranged at the tail end of the pressure rod, a magnet sheet is installed on the positioning seat, spring seats are respectively arranged on both sides of the positioning seat, a spring is arranged between the spring seat and the inner wall of the shell, the rod end at the front end of the pressure rod always keeps in contact with the end of the screw rod under the action of the spring, a Hall sensor is arranged on one of the silicon steel sheets, and the Hall sensor is connected to the automobile ECU.

3. The turbocharger actuator according to claim 1, characterized in that: An anti-rotation block is arranged on the output rod, and straight guide surfaces are arranged on the left and right sides of the anti-rotation block respectively. A guide channel matched with the anti-rotation block is arranged on the shell.

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