RU67188U1 - DEVICE FOR INCREASING PERFORMANCE OF POWER TANK INSTALLATION - Google Patents

Abstract

The utility model solves the problem of ensuring the functioning of the device at partial speed characteristics and transient modes of operation of the power plant. To this end, a device for increasing the throttle response of a power plant of a tank contains air cylinders 1, an air filter 2, a reduction gear 3, connected in series by a pipe 4, an electro-pneumatic valve 5 installed between the reduction gear 3 and the intake manifold 6 of the engine 7, a boost pressure sensor 8 installed on the intake manifold 6 of the engine 7 and containing a membrane 9 with normally closed contacts, a spring 10, which at one end abuts against the membrane 9, and the other - into the cover 11 of the boost pressure sensor 8, you the switch 12, connected in series in an electric circuit with a boost pressure sensor 8 and an electro-pneumatic valve 5, a fuel pedal 13, an electric rheostat 14, fixed by a fixed contact on the pedal bracket 13, and a movable one on the pedals, and connected in series with the electromagnet 15, rigidly mounted on the housing of the sensor 8 boost pressure between the cover of the sensor 11 and the membrane 9. The cover 11 has the possibility of axial movement relative to the sensor 8, while changing the stiffness of the spring 10; The utility model allows to ensure the functioning of the device at partial speed characteristics and transient modes of operation of the power plant of the tank.

Description

The utility model relates to the field of armored vehicles, in particular to the power plants of tanks.

A device for increasing the throttle response of a tank power plant is known, comprising a turbo-piston diesel engine with an intake manifold, an air engine start system equipped with an air cylinder pneumatically connected to a reduction gear, an electro-pneumatic valve, an electrically connected boost pressure sensor and a fuel supply pedal. [one]

The disadvantages of the known device are its complexity and low efficiency in transients and transient modes.

Closest to the proposed utility model is a device for increasing the throttle response of a power plant of a tank, comprising a turbo-piston diesel engine with an intake manifold, an air engine start system equipped with an air cylinder pneumatically connected to a reduction gear, an electro-pneumatic valve electrically connected to it, a boost pressure sensor equipped with a membrane with normally closed contacts and a spring, while the membrane is installed with the ability to open the contacts with increasing the boost pressure to which the spring is adjusted, the fuel pedal, a micro switch installed under the pedal with the ability to close and provide voltage to the winding of the traction relay of the electro-pneumatic valve. [2]

The disadvantage of this device is that its operation is possible only when the latter is operating according to an external speed characteristic, which is much less common in practice than, for example, operation in transient modes or partial high-speed characteristics.

The purpose of the utility model is to ensure the operation of the device at partial speed characteristics and transient modes of operation of the power plant of the tank.

This goal is achieved in that a device for increasing the throttle response of a power plant of a tank, comprising a turbo piston diesel engine with an intake manifold, an air engine start system equipped with an air cylinder pneumatically connected to a reduction gear, an electro-pneumatic valve, an electrically connected boost pressure sensor equipped with a membrane with normally closed contacts and a spring, while the membrane is installed with the ability to open the contacts with increasing boost pressure, on which the spring, the fuel pedal, the microswitch installed under

a pedal with the ability to short circuit and provide voltage to the winding of the traction relay of the electro-pneumatic valve, is additionally equipped with an electromagnet rigidly mounted on the housing of the boost pressure sensor between the sensor cover and the membrane, an electric rheostat, the movable contact of which is rigidly fixed to the fuel supply pedal, and the fixed contact to the pedal bracket , with the possibility of providing voltage supply and regulating the current strength to the electromagnet winding, the cover of the boost pressure sensor is made axially th moving relative to the sensor, the electromagnet and the rheostat are interconnected in series in an electrical circuit.

A device for increasing the throttle response of a tank power plant is shown in FIG. 1 and contains air cylinders 1, an air filter 2, a reduction gear 3, connected in series by a pipe 4, an electro-pneumatic valve 5 installed between the reduction gear 3 and the intake manifold 6 of the engine 7, sensor 8 boost pressure installed on the intake manifold 6 of the engine 7 and containing a membrane 9 with normally closed contacts, a spring 10, which abuts against the membrane 9 with one end and the cover 11 of the pressure sensor 8 with the other boost, switch 12, connected in series in an electric circuit with a boost pressure sensor 8 and an electro-pneumatic valve 5, a fuel pedal 13, an electrical resistor 14, a movable contact of which is rigidly fixed to the fuel supply pedal 13, and a fixed contact on the bracket of the pedal 13, connected in series an electric circuit with an electromagnet 15 rigidly mounted on the housing of the boost pressure sensor 8 between the cover of the sensor 11 and the membrane 9. The cover 11 has the possibility of axial movement relative to the sensor 8, changing m spring stiffness 10;

A device to increase the throttle response of the power plant of the tank is as follows.

Before starting the movement, the switch 12 is turned on, thereby preparing the system for operation.

When the fuel pedal 13 is moved in the direction of increasing the supply, voltage is supplied through normally closed contacts of the boost pressure sensor 8 to the winding of the traction relay of the Electropneumatic valve 5, and through the electric rheostat 14 to the electromagnet 15, which will create a magnetic field that moves the cover 11 of the boost pressure sensor 8 to the right. Moving, the cover 11 will begin to compress the spring 10 of the boost pressure sensor 8. The electro-pneumatic valve 5 is activated and provides air to the intake manifold 6 of the engine 7, making up for the missing amount of air coming from a turbocompressor (not shown) during the acceleration period.

When the air pressure in the intake manifold 6 reaches a predetermined value by which the spring 10 of the boost pressure sensor 8 has been compressed, the membrane 9 will bend under air pressure, overcoming the resistance of the spring 10, and open the normally closed contacts of the boost pressure sensor 8. In this case, the winding of the traction relay of the electro-pneumatic valve 5 is de-energized, and the air supply from the cylinders 1 will be stopped regardless of the position of the pedal 13 of the fuel supply.

In the process of engine operation. When the boost pressure is greater than the amount by which the spring 10 of the boost pressure sensor 8 has been compressed, its contacts will be open, since the membrane 9 will bend under the influence of air pressure and open the electric supply circuit of the electropneumatic valve 5. In this case, the air from the cylinders 1 to the intake manifold 6 will not be served.

As the engine load increases, or with a further increase in fuel supply, the exhaust gas pressure in front of the turbine (not shown) will decrease, the turbocharger speed will decrease, and the boost pressure will become lower. As a result, the spring 10 of the boost pressure sensor 8 will compress more, return the membrane 9 to its original position and close the power supply circuit of the electro-pneumatic valve 5. The electro-pneumatic valve 5 will operate and the air from the cylinders 1 will begin to flow into the intake manifold 6. As the boost pressure builds up, the membrane 9 will bend and open their contacts, ensuring the shutdown of the electro-pneumatic valve 5 and the cessation of the supply of additional air.

With a decrease in fuel supply with an electric rheostat 14, the current supplied to the electromagnet 15 decreases, and the magnetic field created by it decreases. The cover 11 of the boost pressure sensor 8 will move to the left, thereby weakening the compression of the spring 10. Under the influence of air pressure coming from the cylinders 1, the membrane 9 will bend and open its contacts. This stops the flow of air from the cylinders 1. The consumed amount of air from the cylinders 1 will be replenished with a standard compressor (not shown) of the engine 7.

Thus, due to the fact that in the device for increasing the throttle response of the power plant of the tank, the spring stiffness of the boost pressure sensor is regulated depending on the position of the fuel supply pedal, the device is operated at partial speed characteristics and transient operation modes of the power plant.

Information sources

[1] Copyright certificate of the USSR No. 344150, IPC F02D 23/02 publ. 07/07/1972

[2] Patent RU 2176742 C1, IPC F02D 23/02 publ. 10/12/2001

Claims (1)

A device for increasing the throttle response of a power plant of a tank, comprising a turbo-piston diesel engine with an intake manifold, an air engine starting system equipped with an air cylinder pneumatically connected to a reduction gear, an electro-pneumatic valve, an electrically connected boost pressure sensor equipped with a membrane with normally closed contacts and a spring, while the membrane is installed with the ability to open the contacts when increasing the boost pressure, to which the spring is adjusted, fuel supply flange, microswitch installed under the pedal with the possibility of closing and providing voltage to the winding of the traction relay of the electro-pneumatic valve, characterized in that it is additionally equipped with an electromagnet rigidly mounted on the housing of the boost pressure sensor between the sensor cover and the membrane, an electrical rheostat, whose movable contact is rigidly mounted on the fuel supply pedal, and fixed on the pedal bracket, with the ability to provide voltage and current regulation on the exchange ejection of the electromagnet, the cover of the boost pressure sensor is made with the possibility of axial movement relative to the sensor, the electromagnet and the rheostat are connected in series with each other in an electric circuit.