RU2576722C1 - Method of charging hydraulic accumulator of drive system of distribution valve internal combustion engine using piezoelectric pump - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: invention relates to the timing of internal combustion engines (ICE). Invention consists in the fact that the control system converts the voltage of the electricity to alternating pulses of electricity which are fed to the package of piezoceramic elements in the piezopump leading piston making oscillations and pumping hydraulic fluid. Fluid flows through the check valve in the accumulator system, and into the cavity of the piston piezopump fluid flows through the check valve of the compensating accumulator. To open the engine valve the timing control system puts a fluid flow control valve to a position in which it is supplied from the accumulator into a corresponding cavity of the piston valve timing and connected thereto a gas distribution valve opens. To close the valve timing control system operates in reverse order.

EFFECT: technical result is to increase the efficiency of the system.

1 cl, 1 dwg

Description

FIELD OF TECHNOLOGY

The invention relates to the field of power engineering.

BACKGROUND

The prototypes of the claimed invention are patents 2528788 and 2169278. Abstract of patent 2528788 C1 “Method for charging a hydraulic accumulator of a hydraulic drive system of a gas distribution valve and a fuel nozzle of an internal combustion engine”. "The invention relates to the field of gas distribution of internal combustion engines. The technical result is to increase the degree of unification of the drives of various types of internal combustion engines. The essence of the invention lies in the fact that at the compression stroke, the working fluid presses on the end surface of the compressor drive piston. The compressor drive piston begins to move and the compressor piston connected to it through the check valve displaces the fluid into the accumulator. After the compressor piston reaches the extreme point at the next suction stroke, when the pressure in the engine cylinder decreases, the compressor piston spring moves the compressor piston with the compressor drive piston to its original position for the next recharge cycle of the pneumatic accumulator. In this case, the liquid from the compensation tank through the inlet check valve enters the compressor piston cavity. In the future, recharging of the accumulator can occur at the operating cycles of the internal combustion engine. "

Abstract of patent 2169278 C1 "Oscillating piezotransformer of an internal combustion engine." "The invention relates to mechanical engineering and is intended to convert the kinetic energy of the piston, in particular the internal combustion engine piston, into electricity using a piezoelectric and the inverse conversion of electricity to the kinetic energy of the piston. In order to increase the specific conversion power in the first case, the kinetic energy of the piston is transferred to the fluid, the unidirectional motion of which by the oscillator is converted into alternating fluid pressure on the piezoelectric, as a result of deformation of which electric charges are released on its active faces. In the second case, the conversion of electric energy into the kinetic energy of the piston is carried out in the reverse order: electric charges are applied to the active faces of the piezoelectric, the piezoelectric is deformed to the beat of the electrical pulses and thereby forms alternating pressure pulses of the fluid pressure. "The oscillator converts the pulsed fluid pressure into a unidirectional flow, the pressure energy of which is transmitted to the piston."

OBJECT OF THE INVENTION

Both prototypes have their own advantages and disadvantages. The purpose of the claimed invention is to combine the advantages of both prototypes. Quote from the magazine “Behind the Wheel” No. 3, 1999, p. 44, “Speed and Onslaught”: “The inventors of the German company managed to create a 280-layer piezoceramic package expanding by 80 microns in 0.1 ms, enough to act on the nozzle needle with a force of 6300 N! At the same time, the voltage of the vehicle’s onboard network is used for control. " It is obvious that there are more than enough energy capabilities to provide a gas distribution valve drive system for an internal combustion engine with a pyezo pump.

SUMMARY OF THE INVENTION

The essence of the claimed invention is illustrated by the description of the principle of operation of the drive system of a gas distribution valve of an internal combustion engine (ICE) with liquid charging a hydraulic accumulator of a piezo pump system.

Charging the hydraulic accumulator of the drive system 1 (hereinafter referred to as the hydraulic accumulator 1, see drawing) of the gas distribution valve to the operating pressure limits is as follows. The control system converts the voltage of the electric power source, for example, the constant voltage of the electric accumulator of the vehicle’s on-board network into alternating electric power pulses, and feeds them to the package of piezoceramic elements 2 of the piezo pump 3. As a result, the linear dimensions of the elements of the package of piezoelectric elements of the piezo pump 3, perpendicular to the active planes of the piezoelectric elements, are successively reduced and increased in step alternating pulses arriving at them, and connected to a package of piezoceramic elements 2 orshen pezonasosa 4 oscillates. When the piston of the piezo pump 4 moves, for example, from right to left, the liquid located in the cavity of the piezo pump 4, through the check valve 5, enters the hydraulic accumulator 1 and charges it. And when the piston of the piezo pump 4 moves in the opposite direction, the liquid from the compensation accumulator 6 through the non-return valve 7 enters the cavity of the piston of the piezo pump 4 and prepares the piezo pump for the next charging pulse of the hydraulic accumulator 1. As a result of the drive of the gas distribution valve system, the liquid flows from the hydraulic accumulator 1. To maintain pressure fluid in the accumulator 1 within the operating limits, the control system periodically activates the piezo pump as necessary 3. To open the gas distribution valve of the engine 8, the control system sets the control valve of the fluid flow 9 in position, as shown in the drawing. The fluid from the accumulator 1 through channels 10, 11 enters the upper cavity of the piston of the gas distribution valve 12. The fluid presses on it and the gas distribution valve 8 connected to it opens. The liquid from the lower cavity of the piston of the gas distribution valve drive 12 through channels 13, 14 through the check valve 15 enters the compensation air accumulator 6. Through the open gas distribution valve of the internal combustion engine 8 through the channel 16, the fuel mixture or air from the atmosphere enters the combustion chamber of the internal combustion engine 17 and on the exhaust stroke, combustion products are emitted from it. To close the gas control valve 8, the control system puts the control valve of the fluid flow 9 in the lower position. Now, the liquid from the accumulator of system 1 through channels 10, 13 enters the lower cavity of the piston of the drive of the gas distribution valve 12 and the gas distribution valve 8 closes. The spent fluid from the upper piston of the valve of the gas distribution valve 12 through the channels 11, 18 through the check valve 15 enters the compensation pneumatic accumulator 6. Leakage of the liquid through the gap between the rod 19 and the sliding surface contacting it is prevented by the bellows 20.

Thus, the claimed method of driving the gas distribution valve of the internal combustion engine allows to reduce energy consumption for the drive system and to reduce its specific volume.

SUMMARY OF THE INVENTION

A method for charging a hydraulic accumulator of a gas distribution valve drive system of an internal combustion engine with a piezo pump, including a control system, a power source of a gas valve drive system, a package of piezoceramic elements of a piezo pump, containing a package of piezoceramic elements, a piezo pump, a piston of a piezo pump, non-return valves, a hydraulic accumulator of a gas distribution valve drive system and a compensation pump characterized in that the control system converts voltage the energy source of the gas distribution valve drive system of the internal combustion engine in alternating pulses of electricity that feeds to the package of piezoceramic elements of the piezo pump, as a result of which the linear dimensions of the elements of the package of piezo elements of the piezo pump, perpendicular to the active planes of the piezo elements included in the package of piezo elements of the piezo pump, are reduced and sequentially reduced the cycle of alternating pulses arriving at them, as a result of which is connected to the piezo pump piezoelectric elements package makes the piston of the piezo pump oscillatory; when the piston of the piezo pump moves in one direction, the liquid located in the cavity of the piezo pump piston through the check valve enters the system’s hydraulic accumulator and charges the system’s hydraulic accumulator, and when the piezo pump’s piston moves in the opposite direction, the liquid from the compensation hydraulic pump enters into the piston cavity of the piezo pump, preparing the piezo pump for the next charging cycle.

DETAILED DESCRIPTION OF THE INVENTION

Materials and technology for the implementation of the claimed invention do not go beyond the scope of modern capabilities. At the current level of development of automatic control systems, the creation of a control system of the claimed invention is quite an ordinary task.

GRAPHIC MATERIAL

The drawing shows a schematic diagram of a system for charging a hydraulic accumulator of a drive system of a gas distribution valve of an internal combustion engine by a pyezo pump, where 1 is a hydraulic accumulator of a drive system; 2 - a package of piezoceramic elements; 3 - piezo pump; 4 - the piston of the piezo pump; 5, 7, 15 - check valve; 6 - compensation accumulator; 8 - gas distribution valve of the internal combustion engine; 9 - spool control fluid flow; 10, 11, 13, 14, 16, 18 - channel; 12 - the piston of the valve timing; 17 - combustion chamber of the internal combustion engine; 19 - stock; 20 - bellows.

Claims (1)

A method for charging a hydraulic accumulator of a gas distribution valve drive system of an internal combustion engine with a piezo pump, including a control system, a power source of a gas valve drive system, a package of piezoceramic elements of a piezo pump, containing a package of piezoceramic elements, a piezo pump, a piston of a piezo pump, non-return valves, a hydraulic accumulator of a gas distribution valve drive system and a compensation pump characterized in that the control system converts the source of electricity of the gas distribution valve drive system of the internal combustion engine in alternating pulses of electricity that feeds to the package of piezoceramic elements of the piezo pump, as a result of which the linear dimensions of the elements of the package of piezo elements of the piezo pump, perpendicular to the active planes of the piezo elements included in the package of piezo elements of the piezo pump, are successively reduced and reduced the cycle of alternating pulses arriving at them, as a result of which are connected with a package of piezoelectric pump piezo elements, the piston of the piezo pump performs oscillatory movements, when the piston of the piezo pump moves to one side, the liquid located in the cavity of the piston of the piezo pump through the check valve enters the hydraulic accumulator of the system and charges the hydraulic accumulator of the system, and when the piston of the piezo pump moves in the opposite direction, the liquid from the compensation hydraulic accumulator through the non-return valve enters the piston cavity of the piezo pump, preparing the piezo pump for the next charging cycle.