RU2313768C2 - Arrangement for measurement of fuel consumption at driving a military caterpillar vehicle - Google Patents

Abstract

FIELD: the invention is designed for using in the fuel system of the engine of a military caterpillar vehicle.

SUBSTANCE: in the consumption tank there is a sensor of fuel level with two magnetically operated sealed switches and a constant magnet inside the float. At the input into the consumption tank there are two electromagnetic valves: in the main line - a normally open valve connected with a control tumbler switch and in the parallel main line of feeding into the consumption tanker - a normally closing valve. The sensor through a forming impulses block fulfilled with possibility of controlling the electrical magnetic valve in the parallel main line and the impulses meter is connected with a recording device.

EFFECT: provides increase of accuracy and timeliness of measuring of fuel consumption at fulfilling exercises at driving of a military caterpillar vehicle by mechanics-drivers of different qualification.

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Description

The invention relates to the field of military equipment, in particular to fuel systems of power plants of a military tracked vehicle (VGM).

Of the analogues studied, a prototype of a device for measuring the fuel consumption of a military caterpillar vehicle containing a sensor connected to a recording device through a pulse forming unit and a pulse counter (see patent SU 222682, G01F 9/00, 10/22/1968) was taken as a prototype.

The disadvantage of this device is the low accuracy of measuring fuel consumption and the inability to quantify fuel consumption by mechanics-drivers of various qualifications when performing the exercises "Driving the fighting vehicles", that is, the inability to use this technical solution for the qualification of mechanics-drivers when performing exercises for driving high-speed vehicles.

It should be noted that the majority of gas turbine engines with gas turbine engines (GTE) show a large difference in fuel consumption when performing driving exercises with mechanics of different qualifications.

Therefore, for an objective qualification assessment of driver mechanics, i.e. assessing the quality of their driving when they perform various exercises of the “Combat Vehicle Driving Course”, it is necessary to introduce an accurate and timely fuel consumption for a specific exercise as an additional assessment indicator for driving combat vehicles.

The objective of this technical solution is to establish the accuracy and timeliness of measurements of fuel consumption when performing exercises for driving high-speed vehicles by mechanics-drivers of various qualifications.

The solution to this problem is achieved due to the fact that the fuel tank has a float-type fuel level sensor with two reed switches and a permanent magnet inside the float, while two solenoid valves are installed at the inlet to the fuel tank: a normally open valve connected to the toggle switch in the main line control, and in the parallel line of supply to the supply tank - normally closed valve, while the pulse forming unit is configured to control the electromagnetic valve in parallel highways.

The technical result of the claimed technical solution is expressed in increasing the accuracy and timeliness of measuring fuel consumption when performing exercises for driving a gas-powered engine with mechanics-drivers of various qualifications.

A schematic diagram of a technical solution is shown in the drawing. The device includes: a recording device - 1; pulse counter - 2; pulse forming unit - 3; reed switch - 4; fuel level sensor 5 in the flow tank; float - 6; reed switch - 7; EMK2 valve - 8; EMKI valve - 9; control toggle switch - 10.

The principle of operation of the device is based on the formation of pulses during the development of a certain amount of fuel from a supply tank, the summation of these pulses and their registration by a device calibrated in meters.

Two electromagnetic valves are installed at the fuel inlet to the supply tank, one of them is EMK1, normally open, in the main line through which fuel flows when the device is off, the second is EMK2, normally closed, in the parallel line, through which fuel enters to refill the supply tank after developing from it a measured amount of fuel with the device turned on.

In the sensor housing 5 on the tube there is a float with a permanent magnet inside and two reed switches 4 and 7 are installed, as well as the contacts of the upper contactor K2 of the pulse forming unit.

When the tank is completely filled, the float is in its highest position, in which, due to the magnetic field of its magnet, the contacts of the reed switch 4 are closed.

To measure fuel consumption, the control switch 10 is turned on. At the same time, current is supplied to the solenoid valve 8 from the batteries (battery), the valve closes, and the deenergized solenoid valve 9 is closed at that moment.

As the fuel level in the supply tank decreases, the float goes down the tube and the contacts of the reed switch 4 open. When developing a measured amount of fuel, the float drops to the level of the reed switch 7 and its contacts are closed. This leads to the inclusion of the contactor KI and the closure of its contacts KIл and KIп. Through the closed right KIP contacts, current is supplied to the electromagnetic valve 8, which opens and provides a quick replenishment of the supply tank, at the same time an electric pulse is sent to the pulse counter 2 through these contacts. Krbl and krbp. Through the right contacts Krbp, the parallel power supply circuit of the RB relay is turned on, and through the left contacts Krbl - the parallel power circuit of the electromagnetic valve 8.

When the supply tank is full, the float rises and the contacts of the reed switch 7 open, the contactor KI is de-energized and the contacts KI and KI open. However, valve 8 remains open, as current continues to flow through its electromagnet through the left contacts of the KRL. Valve 8 closes after filling the supply tank, when the float rises to the highest position at which the contacts of the reed switch 4 are closed. This leads to the inclusion of contactor K2, the opening of its contacts K2 in the relay circuit of the RB, the RB to be turned off and the contacts Krbl and Krbp to open, and also to de-energize the solenoid valve 8. After closing the valve 8, a new measurement cycle begins.

Thus, the proposed device for measuring fuel consumption when driving a VGM allows you to evaluate the qualifications of the driver through accurate and timely measurement of fuel consumption.

Claims (1)

A device for measuring fuel consumption while driving a military tracked vehicle, comprising a sensor connected to a recording device through a pulse generating unit and a pulse counter, characterized in that a fuel level sensor with a float type with two reed switches and a permanent magnet inside the float is installed in the fuel tank, two electromagnetic valves are installed at the inlet to the supply tank: in the main line, a normally open valve connected to the control toggle switch, and in the parallel supply line to Khodnev tank - a normally closed valve, wherein the pulse forming unit is configured to control the solenoid valve in the parallel line.