RU144853U1 - EMERGENCY ALARM SYSTEM AND DIESEL STOPPING AT PRESSURE DROP IN THE ENGINE LUBRICATION SYSTEM BEFORE CRITICAL INDICATIONS - Google Patents

Abstract

An emergency alarm system and a diesel engine stop when the pressure in the engine lubrication system drops to critical readings, which contains an emergency oil pressure sensor in the engine lubrication system, an emergency oil pressure warning lamp with a red filter and connecting wires, characterized in that the on-off relay is additionally installed in the system, system switch and engine stop mechanism.

Description

The utility model relates to transport engineering, mainly to systems and mechanisms that provide control over the operation of the sample (in this case, the engine) and the safety of its operation.

There is a known alarm about a pressure drop in the engine lubrication system to critical readings, which includes an emergency oil pressure sensor in the engine lubrication system, an emergency oil pressure warning lamp with a red filter and connecting wires [KAMAZ all-wheel drive vehicles [Text]: Installation and operation / under edited by D.Kh. Valeev - Naberezhnye Chelny, 2006 .-- 635 p. - Bibliography: p.631-633], the combination of which can be taken as a subsystem for monitoring the operation of the engine lubrication system.

The disadvantages of this alarm is:

- the alarm has a purely information function, that is, it informs the driver (driver) only about the drop in oil pressure in the engine lubrication system below a critical value;

- the emergency lamp is located in the control lamp block and when the car is moving, especially in difficult road conditions, when the driver’s attention is concentrated on the road, the driver (driver-mechanic) may miss the moment of its operation. Practice shows that after an alarm is triggered about a drop in oil pressure in the engine lubrication system to critical readings, the driver (driver-mechanic) has no more than one minute to stop the engine without serious consequences for the latter;

- the alarm about the drop in oil pressure in the lubrication system to critical readings is absent on combat vehicles (BMD, BMP and their modifications).

Known instrumentation: the oil gauge gauge and the remote oil gauge (hereinafter referred to as the gauge and pointer) included in the engine lubrication system [BMD-1 and BMD-1 amphibious assault vehicles PC [Text]: instruction manual Part 2 / editor P. AT. Vorontsov, tech. Editor A.A. Pereskokova, proofreader S.V. Soloviev. - M.: Military Publishing House, 2002. - 192 p. - Bibliography: p. 189-190], [BMD-1 and BMD-1 amphibious assault vehicles PK [Text]: technical description / editor P.V. Vorontsov, techn. Editor A.A. Pereskokova, corrector A.I. Belyaeva. - M.: Military Publishing House, 2002. - 384 p. - Bibliography: p. 380-384], [BMP-2 infantry fighting vehicle [Text]: technical description and operating instructions Part 11 editor V.A. Ivasenko, techn. Editor N.Ya. Bogdanova, proofreader S.N. Shtynova, computer layout N.V. Zizina. - M.: Military Publishing House, 2001. - 320 p. - Bibliography: p.315-320], designed to control the operation of the engine lubrication system, the totality of which can be taken as a subsystem for monitoring the operation of the engine lubrication system.

The disadvantages are:

- the inconvenience of monitoring the oil pressure indicator in the engine lubrication system. The pointer type indicator mounted on the shield of the driver in the lower right corner is not convenient for taking readings by the driver / driver during the movement of the combat vehicle. The driver (driver) has to constantly be distracted from observing the road (when driving “in combat”, take his eyes off the monitoring devices, and when moving in the “traveling” position, bend down);

- there is no alarm in the system when the oil pressure drops in the engine lubrication system below critical readings;

- the readings are only informative in nature, therefore, if the oil pressure in the engine lubrication system falls below critical readings, the driver (driver) may not have time to react and stop the engine in time, which will lead to failure.

Known engine shutdown mechanism (MOD) [BMD-1 and BMD-1PK airborne combat vehicles [Text]: instruction manual Part 2 / editor P.V. Vorontsov, techn. Editor A.A. Pereskokova, proofreader S.V. Soloviev. - M.: Military Publishing House, 2002. - 192 p. - Bibliography: p. 189-190], [BMD-1 and BMD-1PK airborne combat vehicles [Text]: technical description / editor P.V. Vorontsov, techn. Editor A.A. Pereskokova, corrector A.I. Belyaev. - M.: Military Publishing House, 2002. - 384 p. - Bibliography: p. 380-384], [BMP-2 infantry fighting vehicle [Text]: technical description and operating instructions Part 11 editor V.A. Ivasenko, techn. Editor N.Ya. Bogdanova, proofreader S.N. Shtynova, computer layout N.V. Zizina. - M.: Military Publishing House, 2001. - 320 p. - Bibliography: p.315-320], which provides, upon receipt of a signal, an engine stop without the participation of a driver.

MOD (figure 1) consists of a bracket 12, on which all the details of the mechanism are mounted: electromagnet 1, bushings 11, levers 9 and 10, two balls 7, rod 6, spring 5, earring 2, snap rings 3 and 8, washers 4 The principle of operation is based on the separation of the thrust of the fuel supply control drive using an electromagnet.

The disadvantages are:

- The MOD is triggered only when a response signal is received (from the GO-27 sensor or the radiation and chemical reconnaissance device (PRHR) through the switching unit, from the sensors of the fire equipment system (GSHO) and its operation is not linked to the operation of the engine systems;

- not installed on cars and wheeled armored personnel carriers. The closest in technical essence to the claimed alarm system and the diesel engine stops when the pressure in the engine lubrication system drops to critical readings is the KAMAZ automobile engine lubrication system selected as a prototype.

The proposed alarm system for signaling and stopping the diesel engine when the pressure drops in the engine lubrication system to critical readings (Fig. 2), hereinafter the alarm and stopping system for the diesel engine, can solve the above problems and eliminate the disadvantages.

The technical result of the application of an emergency alarm system and a diesel engine stop is aimed at expanding the functionality of the engine and improving control of the engine lubrication system.

The technical result is achieved by the fact that the subsystem for monitoring the operation of the engine lubrication system, comprising an emergency oil pressure sensor in the engine lubrication system, an emergency oil pressure warning lamp with a red filter and connecting wires, with the inclusion of an additional relay, a system switch, and a stop mechanism engine, resulting in an automatic engine stop when the pressure in the lubrication system to critical readings.

Distinctive features of the prototype is that it is additionally installed on-off relay, system switch, engine stop mechanism (MOD).

Figure 2 shows a schematic diagram of an alarm system and a diesel engine stop.

The system includes: a system switch (pos. A), an emergency oil pressure warning lamp with a red filter or a flashing LED (for military vehicles) (pos. B), an on-off relay (pos. B), an emergency oil pressure sensor in the lubrication system engine (pos. D), engine stop mechanism (MOD) (pos. D), connecting wires.

The system works as follows:

- initial position - system switch in the “Off” position;

- after starting the engine and setting the idle speed and warming up the engine, set the system switch to the “On” position;

- in the event of an emergency with a pressure drop in the engine lubrication system to 0.8-1.0 kgf / cm ² and the contact plates of the emergency oil pressure sensor contact (under the action of a spring), the control circuit closes - the emergency lamp (blinking LED) lights up and through closed contacts of the switching relay, current is supplied to the “+” terminal of the engine stop mechanism (MOD). When the MOD is triggered, the thrust of the fuel supply control drive is disconnected, which causes the engine to stop. To bring the system to its original position, just turn off the system switch and connect the disconnected drive rod.

Installation of the system consists of:

- for combat vehicles (BMD, BMPs and vehicles based on them) in the installation on the driver’s shield of the driver of the system switch, a flashing LED and a power relay, connecting in the engine compartment to the oil supply hose to the oil pressure gauge in the engine lubrication system through the engine double emergency oil pressure and, their inclusion in the electrical circuit of the machine according to the concept. The selection of “+” to the control circuit and the executive circuit from the general output “+” to the shield of the driver;

- for cars and wheeled armored personnel carriers - installing an on-off relay, a system switch, an engine stop mechanism (when installed on cars and wheeled armored personnel carriers, the engine of which is stopped by stopping the air supply, it must be replaced by a retractor relay) and the inclusion of an emergency fall alarm oil in the engine lubrication system.

The emergency alarm system and the diesel engine stops when the pressure in the engine lubrication system drops to critical readings is cheap to manufacture (the total cost of a test sample taking into account the cost of materials and work was 200-300 rubles without taking into account the cost of the MOD), easy to install and reliable in operation.

Installing the proposed system on vehicles with a diesel engine and combat vehicles (BMD, BMP and vehicles based on them) will make it possible, when the oil pressure in the lubrication system drops to critical readings, to automatically stop the engine, which in turn can bring a positive economic effect in the form of cost engine or repair work.

Claims (1)

An emergency alarm system and a diesel engine stop when the pressure in the engine lubrication system drops to critical readings, which contains an emergency oil pressure sensor in the engine lubrication system, an emergency oil pressure warning lamp with a red filter and connecting wires, characterized in that the on-off relay is additionally installed in the system, system switch and engine stop mechanism.