Engine valve train type valve distribution mechanism and motor servo valve distribution method

Abstract

An engine rotating valve type rotary servo valve mechanism, including valve core (1), valve seat (2), inlet and outlet manifold (3), one-way diaphragm (18), one-way diaphragm (19), engine cylinder and servo rotary motor; The servo valve method of the engine rotating valve type servo valve mechanism is to use the servo rotary motor as the power to drive the valve core (1) to rotate inside the valve seat (3), and to use the rotary transformer to monitor and accurately control the rotary position of the inlet valve core (1) relative to the valve seat (3), to realize the opening and closing between the inlet and outlet grooves and the corresponding inlet and outlet ports, so as to realize the stop of the valve. The device has the advantages of compact structure, stable gas supply, convenient use and adjustment, etc., can effectively reduce the vibration of the engine due to the valve, improve the engine efficiency, and has good market prospect.

Description

Technical Field

[0001] This invention belongs to the field of automotive engineering technology, and relates to an engine rotary valve valve train mechanism, as well as a motor servo valve train method for the engine rotary valve valve train mechanism. Background Technology

[0002] Today, intelligentization, greening, and energy efficiency have become the main pursuits for the development of the machinery manufacturing industry. This places higher demands on internal combustion engines, one of the modern distributed power sources, forcing them to develop towards higher efficiency. Engine valve trains come in various forms, such as side-valve and overhead-valve configurations. A superior valve train structure makes a significant contribution to improving combustion quality, making the engine valve train a hot topic in modern internal combustion engine research.

[0003] As a crucial component of the engine, the valve train directly impacts the engine's intake and exhaust efficiency. Traditional valve trains have limitations in terms of the precision of valve timing and volume adjustment. To meet the evolving demands of high-speed, high-precision, and low-energy-consumption engines, this paper explores the integration of a servo motor and a rotary valve based on AC servo motor technology. This design presents a rotary valve-type valve train and a motor-servo valve train method, demonstrating significant engineering practical value. Summary of the Invention

[0004] The purpose of this invention is to provide an engine rotary valve valve timing mechanism that can achieve precise valve timing for engine cylinders.

[0005] Another object of the present invention is to provide a valve control method for an engine rotary valve valve mechanism.

[0006] The technical solution adopted in this invention is as follows: an engine rotary valve valve distribution mechanism, including a valve core 1, a valve seat 2, an inlet / outlet manifold 3, a one-way diaphragm 18, a one-way diaphragm 19, an engine cylinder, and a servo rotary motor; there is a seal between the rotating shaft of the valve core 1 and the hole of the valve seat 2; the outer shell of one side of the servo rotary motor is fixedly connected to the bottom of the valve seat 3; the bottom of the rotary valve is directly connected to the inside of the cylinder.

[0007] The servo rotary motor includes a cover 10, a housing 11, a motor stator 12, a motor rotor 13, a cover 14, a motor spindle 15, and a rotary transformer. The cover 10 and the cover 14 are fixedly connected to both ends of the housing 11, forming the outer shell of the servo rotary motor together with the housing 11. The motor spindle 15 is fixedly connected to the motor rotor 14 and placed in the core of the servo rotary motor. The motor spindle 15 is supported on bearings at both ends of the servo rotary motor. The rotary transformer can be further divided into a resolver rotor 16 and a resolver stator 17. The resolver stator 17 is fixedly connected to the cover 14, and the resolver rotor 16 is fixedly connected to the motor spindle 15. The output end of the motor spindle 15 is fixedly connected to the valve core.

[0008] The valve core 1 is a cylindrical structure with two mutually perpendicular venting grooves on its outer circular surface. The two adjacent venting grooves are 45° apart on the outer circumference in the axial direction. The valve seat 2 is symmetrical in the upper and lower parts and in the left and right parts, with the inlet and outlet channels vertically connected.

[0009] The engine cylinder includes a piston 4, a cylindrical pin 5, a connecting rod 6, a crankshaft 7, an engine cylinder block 8, and an oil pan 9; the piston 4 and the connecting rod 6 are connected by the cylindrical pin 5; the big end of the connecting rod cooperates with the connecting rod journal of the crankshaft 7 to achieve relative rotation.

[0010] Another technical solution adopted in this invention is: a motor servo valve timing method for an engine rotary valve timing mechanism. In an engine rotary valve timing mechanism, a servo rotary motor is used as the power source to drive the valve core 1 to rotate within the valve seat 3. A rotary transformer monitors and precisely controls the rotation angle of the valve core 1 relative to the valve seat 2 in real time, realizing the connection and disconnection between the exhaust slot and the corresponding intake and exhaust pipes when the engine is working, and realizing the supply and exhaust of air to the cylinder according to the working sequence. Among the four exhaust slots on the outer circular surface of the valve core 1, the two axially adjacent exhaust slots differ by 45° in the circumferential direction, ensuring that the rotary valve completes one intake and exhaust cycle for one rotation of the servo rotary motor. The speed adjustment of the servo rotary motor changes the supply and exhaust volume and the timing of supply and exhaust.

[0011] The beneficial effects of this invention are:

[0012] An engine rotary valve-type valve train employs a servo rotary motor and a rotary transformer to precisely rotate the valve core 1 relative to the valve seat, thereby connecting or disconnecting the pipeline between the cylinder intake port and the cylinder exhaust port. The intake phase, exhaust phase, intake speed, and exhaust speed are adjusted by controlling the rotational speed of the servo rotary motor. This device has advantages such as compact structure, stable valve train, and convenient operation and adjustment, and has broad market prospects. Attached Figure Description

[0013] Figure 1 This is a diagram showing the working process of the invention starting with inhalation.

[0014] Figure 2 This is a diagram showing the operation of the invention at the end of inhalation.

[0015] Figure 3 This is a working diagram showing the start of the exhaust process of this invention.

[0016] Figure 4 This is a diagram showing the operation of the present invention after exhaust.

[0017] Figure 5 This is an engineering drawing of the valve core of the present invention. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings.

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 An engine rotary valve servo valve timing mechanism includes a valve core 1, a valve seat 2, an inlet / outlet manifold 3, a one-way diaphragm 18, a one-way diaphragm 19, an engine cylinder, and a servo rotary motor; the valve core 1 is assembled in the middle of the valve seat, and there is a seal between the rotating shaft of the valve core 1 and the valve seat hole; the housing of the servo rotary motor is fixedly connected to the bottom of the valve seat 3; the bottom of the rotary valve is directly connected to the inside of the cylinder.

[0020] The servo rotary motor includes a cover 10, a housing 11, a motor stator 12, a motor rotor 13, a cover 14, a motor spindle 15, and a rotary transformer. The cover 10 and the cover 14 are fixedly connected to both ends of the housing 11, forming the outer shell of the servo rotary motor together with the housing 11. The motor spindle 15 is fixedly connected to the motor rotor 13 and placed in the core of the servo rotary motor. The motor spindle 15 is supported on bearings at both ends of the servo rotary motor. The rotary transformer is further divided into a resolver rotor 16 and a resolver stator 17. The resolver stator 17 is fixedly connected to the cover 14, and the resolver rotor 16 is fixedly connected to the motor spindle 15. The output end of the motor spindle 15 is fixedly connected to the valve core.

[0021] The valve core 1 is a cylindrical structure. Two mutually perpendicular venting grooves are opened on the outer circular surface of the valve core 1. The axial direction of each pair of adjacent venting grooves differs by 45° on the outer circumference. The valve seat 2 has a structure that is symmetrical from top to bottom and from left to right, with the inlet and outlet channels vertically connected.

[0022] The engine cylinder includes a piston 4, a cylindrical pin 5, a connecting rod 6, a crankshaft 7, an engine cylinder block 8, and an oil pan 9; the piston 4 and the connecting rod 6 are connected by the cylindrical pin 5; the big end of the connecting rod cooperates with the connecting rod journal of the crankshaft 7, and they rotate relative to each other through bearings and other components.

[0023] The working principle of air intake and exhaust is as follows:

[0024] Air first enters the intake manifold, then enters the rotary valve. The motor spindle 15 drives the valve core 1 to rotate, connecting the intake slot with the pipeline, allowing air to pass through the rotary valve and the one-way diaphragm 18 to reach the upper part of the piston 4 and the cylinder. When exhaust gas is discharged, the intake valve core 1 closes, and the exhaust gas passes through the upper part of the piston 4 and the cylinder, through the one-way diaphragm 19, and enters the rotary valve. Driven by the motor spindle 15, the valve core 1 rotates, connecting the exhaust slot with the pipeline, allowing the exhaust gas to pass through the rotary valve and enter the exhaust manifold, thus discharging the exhaust gas.

[0025] The working principle of the engine rotary valve type valve train of the present invention is as follows:

[0026] When valve core 1 rotates under the drive of the servo rotary motor, the through groove on valve core 1 connects with the air intake port on the intake valve seat, enabling cylinder intake. Specifically, when the servo rotary motor rotates within a specific angle range, the specific through groove on the intake valve core connects with the corresponding air intake port on the intake valve seat, allowing cylinder intake. After completing one intake cycle, intake valve core 1 continues to rotate, closing the intake. When crankshaft 7 reaches the exhaust phase, the through groove in the exhaust pipe of valve core 1 in valve seat 2 connects with the exhaust port on the intake valve seat, enabling cylinder exhaust. One-way diaphragms 18 and 19 are installed on the pipeline between the engine cylinder top and the intake and exhaust valves. After operation stops, the one-way diaphragms block the backflow of gas in the gas delivery pipeline, ensuring the valve train is ready to use immediately.

[0027] The working principle of this invention is as follows:

[0028] An engine rotary valve valve train and a motor-driven servo valve train method are disclosed. A servo rotary motor is used as the power source to drive the valve core 1 to rotate inside the valve seat 2. A rotary transformer is used to monitor and precisely control the rotational position of the valve core 1 relative to the valve seat 2 in real time, thereby opening and closing the intake and exhaust slots and corresponding intake and exhaust ports to supply and exhaust air to the cylinder. Since the supply and exhaust air to the cylinder are controlled by rotating the valve core 1, the intake air volume can be controlled by the on / off time of the valve core 1 and the cylinder's intake and exhaust ports. Furthermore, the servo motor is activated by detecting different phases of the crankshaft 7 using sensors, reducing vibration losses in the valve train and improving engine efficiency.

Claims

1. A rotary valve type servo valve train for engines, characterized in that: The system includes a valve core (1), a valve seat (2), an inlet / outlet manifold (3), a one-way diaphragm (18), a one-way diaphragm (19), an engine cylinder, and a servo rotary motor. The valve core (1) is assembled in the middle of the valve seat, and there is a seal between the rotating shaft of the valve core (1) and the valve seat hole. The outer shell of the servo rotary motor on one side is fixedly connected to the bottom of the valve seat (2). The bottom of the rotary valve is directly connected to the inside of the cylinder. The servo rotary motor includes a cover (10), a housing (11), a motor stator (12), a motor rotor (13), a plug (14), a motor spindle (15), and a rotary transformer. The cover (10) and the plug (14) are fixedly connected to both ends of the housing (11), forming the outer shell of the servo rotary motor together with the housing (11). The main shaft (15) is fixedly connected to the motor rotor (13) and placed in the heart of the servo rotary motor. The motor main shaft (15) is supported on the bearings at both ends of the servo rotary motor. The rotary transformer can be divided into a resolver rotor (16) and a resolver stator (17). The resolver stator (17) is fixedly connected to the end cap (14), and the resolver rotor (16) is fixedly connected to the motor main shaft (15). The output end of the motor main shaft (15) is fixedly connected to the valve core. The valve core (1) is a cylindrical structure. Two mutually perpendicular venting grooves are opened on the outer circular surface of the valve core (1). The axial direction of each pair of adjacent venting grooves is 45° apart on the outer circumference of the valve core (1). The valve seat (2) has a structure that is symmetrical from top to bottom and left to right. The inlet and outlet channels are vertically connected. The engine cylinder includes a piston (4), a cylindrical pin (5), a connecting rod (6), a crankshaft (7), an engine cylinder block (8), and an oil pan (9); the piston (4) and the connecting rod (6) are connected by a cylindrical pin (5); the big end of the connecting rod cooperates with the connecting rod journal of the crankshaft (7) to achieve relative rotation.

2. The engine rotary valve type servo valve timing mechanism according to claim 1, characterized in that: Air first enters the intake manifold, and then enters the rotary valve through the intake manifold. Driven by the motor spindle (15), the valve core (1) rotates, which connects the intake slot with the pipeline, allowing air to pass through the rotary valve and reach the upper part of the piston (4) and the cylinder through the one-way diaphragm (19). When exhaust gas is discharged, the exhaust gas enters the rotary valve through the upper part of the piston (4) and the cylinder through the one-way diaphragm (19). Driven by the motor spindle (15), the valve core (1) rotates, which connects the exhaust slot with the pipeline, allowing the exhaust gas to enter the exhaust manifold through the rotary valve, thus discharging the exhaust gas.

3. A servo control method for an engine rotary valve servo valve train, wherein the engine rotary valve servo valve train is as described in claim 1, characterized in that: A servo rotary motor serves as the power source, driving the valve core (1) to rotate inside the valve seat (2). A rotary transformer is used to monitor and precisely control the rotational position of the valve core (1) relative to the valve seat (2) in real time, realizing the opening and closing between the intake and exhaust grooves and the corresponding intake and exhaust ports, thus enabling the cylinder to supply and exhaust air. When the valve core (1) rotates under the drive of the servo rotary motor, the through groove on the valve core (1) is connected to the intake port on the intake valve seat, thus enabling the cylinder to receive air. That is, when the rotation angle of the servo rotary motor is within a specific angle range, the specific through groove on the valve core (1) is connected to the corresponding intake port on the intake valve seat, allowing the cylinder to receive air. After completing one intake cycle, the intake valve core continues to rotate, thus closing the intake. When the crankshaft (7) reaches the exhaust phase, the through groove in the valve core (1) part of the exhaust pipe in the valve seat (2) is connected to the exhaust port on the intake valve seat, thus enabling the cylinder to exhaust air. One-way diaphragms (18) and (19) are installed on the pipeline between the top of the engine cylinder and the intake and exhaust valves. After the operation stops, the one-way diaphragms block the backflow of gas in the gas pipeline.

Images