Device for emergency shutting down of internal combustion engine and deceleration of vehicles by engine

FIELD: mechanical engineering; engines.

SUBSTANCE: invention relates to devices for disconnection of engines in case of emergency situations and to compression brakes of engine trucks. Device for emergency shutting down of internal combustion engine and deceleration of vehicle by engine contains member for closing section of intake pipe line, closing member position setter and compressed air source. Closing member position setter is made in form of crankshaft speed limit pickup, oil pressure drop pickup, cooling liquid temperature rise pickup, and engine retarder control pushbutton. Intake pipeline section closing member is made in form of spool series-connected by pneumatic cylinder, in upper part of which calibrated hole communicating with atmosphere is made with fuel-feed valve connected with fuel-feed main line and with each of above-indicated pickups through check valve, and signal lamp and with engineering retarder control pushbutton and is connected in series with compressed air source. Pickups and engine retarder control pushbutton are connected in parallel.

EFFECT: improved reliability and efficiency of engine in operation, enlarged functional capabilities.

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The invention relates to the field of engineering, namely the engine, in particular to a device for switching off the engine, protecting it in case of emergency situation, as well as compression brakes truck engines.

A device for emergency stop of the internal combustion engine (Ed. mon. The USSR №950935, F 02 D 17/04, F 02 In 77/08, 1982), containing the body of the overlapping section of the intake pipe, made in the form of a wall of a pipe from an elastic material, a source of compressed gas and referencing the position of the body overlapping, connected to the wall through the fitting and is designed as a dispenser for the alternating messages fitting with a compressed gas source and with the atmosphere, while the inlet pipe provided with a transverse groove and the wall of the pipe is located above the groove inlet pipe and secured to the latter by means of the casing, and the casing opposite the groove of the pipeline made hole for connecting the fitting.

The disadvantages of the known devices are:

1. the body of overlap in the operation of the device is not durable because it is made of elastic material;

2. in the known device upon actuation of the body overlap in the cylinders of the engine there is a significant negative pressure, causing increased oil consumption through the gap m is waiting for piston rings and cylinder;

3. structurally not provided by the device sensors emergency condition of the mechanisms and systems of the engine, and the detector device, which significantly reduces the reliability of the device.

The technical result is to increase the reliability and efficiency of the engine, and extending its functionality.

The technical result is achieved in that the device for emergency stop of the internal combustion engine and the motor deceleration of the vehicle, contains the body of the overlapping section of the exhaust pipe, the setpoint position of authority overlap and the source of compressed air, while referencing the position of the body coverings are made in the form of a limit sensor crankshaft rotation speed, the drop sensor oil pressure sensor temperature increase of the coolant and the control buttons engine retarder, and the body of the overlapping section of the intake pipe is made in the form of a valve, connected in series by means of the pneumatic cylinder in the upper part of which is made from a calibrated orifice associated with the atmosphere, valve fuel associated with the fuel supply line and each of the above sensors through the check valve and the control light, and button control the engine retarder, and in series with the source of compressed air, while the sensors and the control button engine retarder are connected in parallel.

Distinctive features of the prototype is that the knob position of authority floors are made in the form of a limit sensor crankshaft rotation speed, the drop sensor oil pressure sensor temperature increase of the coolant and the control buttons engine retarder, and the body of the overlapping section of the intake pipe is made in the form of a valve, connected in series by means of the pneumatic cylinder in the upper part of which is made from a calibrated orifice associated with the atmosphere, valve fuel supply associated with the fuel supply line and each of the above sensors through the check valve and the control light, and button control engine retarder, and consistently with the source of compressed air, while the sensors and the control button engine retarder are connected in parallel.

The drawing shows the device for emergency stop of the internal combustion engine and the motor deceleration of the vehicle.

The device includes a body overlapping section of the intake pipe, made in the form of the valve 1, is installed in the exhaust trubor the water 2 and connected by a rod 3 with the piston 4 of the cylinder 5, also containing a return spring 6 and a calibrated orifice 7 for venting to the atmosphere and connected in series with the supply valve fuel 8, are also included in the line G fuel 9 and containing a return spring 10, the valve 11 is made in it by channel 12, and via a connecting line 13 with the reference position of the body overlap, made in the form of sensor limits the maximum frequency of rotation of the crankshaft I, the drop sensor oil pressure II, sensor temperature increase of the coolant III through the respective connecting line 14, 15, 16, the check valves 20, 21, 22 and the control light bulbs 23, 24, 25, and button control engine retarder IV through the connecting line 46, while the sensors I, II, III and button control engine retarder IV are connected in parallel and in series with the compressed air source 27 through line 17 and 26, 18 and 26, 19 and 26, 47 and 26, respectively.

The sensors I, II, III and button control engine retarder IV are composed respectively of the spools 28, 32, 38, 42 and the return spring 29, 33, 39, 43, with valves 28, 32, 38, 42 provided with channels 30, 34, 40, 44, connecting the compressed air source 27 to the cylinder 5 through line 17 and 14, 18 and 15, 19 and 16, 47 and 46, respectively. In addition, the sensor limits the maximum h is the frequency of the first rotation of the crankshaft includes a centrifugal cargo 31, drop sensor oil pressure II consists of the power cylinder 35 containing a piston 36 and the opening 37 to supply oil from the lubrication system, the sensor temperature increase of the coolant III contains thermo sensor 41, the button control engine retarder IV contains a button 45.

The device operates as follows.

With increasing rotational speed of the crankshaft of the above valid values centrifugal loads 31 diverge and move the valve 28 to match the channel 30 with connecting highways 17 and 14, the compressed air from the compressed air source 27 flows into the valve of the fuel supply 8 and the pneumatic cylinder 5. The spool 11 by air pressure moves the channel 12 and the fuel supply line 9 becomes disconnected, stopping the supply of fuel into the cylinders of the engine. In the pneumatic cylinder 5, the compressed air acting on the piston 4 and the rod 3, rotates the spool 2 in the position blocking the exhaust manifold 1, and the lights pilot light 23. The motor operates in the mode of the compressor and the frequency of the crankshaft at this point is reduced below the maximum, while the centrifugal force cargo 31 is reduced, and they are under the action of the spring 29 converge. The channel 30 in the spool 28 and the connecting line 17 and 14 becomes disconnected, the air from the pneumatic cylinder 5 and the valve of the fuel 8 is released in the atmosphere is the fer through a calibrated orifice 7, the piston 4 and the valve 11 under the action of the return spring 6 and 10 are returned to the initial position, the spool 11 combines the channel 12 with the fuel supply line 9 and the fuel supply to the cylinders of the engine is resumed, and the valve 2 opens the exhaust manifold 1, and the working cycle of the engine flows in the specified driver mode.

When lowering the oil pressure in the lubrication system below the minimum allowable value of the piston 36 under the action of the spring 33 changes its position and shifts the spool 32 so that the channel 34 connects line 18 and 15, and the air from the compressed air source 27 flows into the valve of the fuel supply 8 and the pneumatic cylinder 5, with the valve 11 closes the fuel supply line 9 and the valve 2 closes the exhaust manifold 1 according to the previously described scheme, with lights pilot light 24, stop flow of fuel into the cylinders of the engine and the motor operates in the mode of the compressor. By increasing the oil pressure in the lubrication system, the piston 36 moves the valve 32 and channel 34 and highway 18 and 15 becomes disconnected, the air from the pneumatic cylinder 5 and the valve of the fuel 8 is released in the atmosphere through a calibrated orifice 7, the piston 4 and the valve 11 under the action of the return spring 6 and 10 are returned to the initial position, the spool 11 combines the channel 12 with the fuel supply line 9 and the fuel injection into the cylinder of the engine is resumed, and the valve 2 opens the exhaust manifold 1, and the working cycle of the engine flows in the specified driver mode.

When the temperature of the coolant is above the maximum permissible value of thermo sensor 41 moves the spool 38 and channel 40 connects highway 19 and 16, and the air from the compressed air source 27 flows into the pneumatic cylinder 5, and the valve 2 closes the exhaust manifold 1 according to the previously described scheme, with lights pilot light 25. The motor operates in the mode of the compressor and the coolant temperature decreases, while thermo sensor 41 moves the spool 38 and channel 40 and highway 19 and 16 dismantled. The air from the pneumatic cylinder 5 and the valve of the fuel 8 is released in the atmosphere through a calibrated orifice 7, the piston 4 and the valve 11 under the action of the return spring 6 and 10 are returned to the initial position, the spool 11 combines the channel 12 with the fuel supply line 9 and the fuel supply to the cylinders of the engine is resumed, and the valve 2 opens the exhaust manifold 1, and the working cycle of the engine flows in the specified driver mode.

Pressing the button 45 button control engine retarder IV channel 44 in the valve 42 is combined with the highways 47 and 46 for supplying air to the pneumatic cylinder 5 and to the valve of the fuel 8 in the last spool 11 top is t the fuel supply line 9 to the previously described scheme, and the pressure force of the compressed air acts on the spool 2, which is blocking the exhaust manifold 1, provides the translation engine in the operation mode of the compressor. While the fuel supply to the engine cylinders is not performed, the rotational speed of a crankshaft, as the rotation of the driving wheels of the vehicle is slowing down, it is slowing down.

The application of this device can prevent the occurrence of accidents and breakage of the engine in case of increase of frequency of rotation of the crankshaft above the maximum, the pressure drop of the oil in the lubrication system, increasing the temperature of the coolant, thereby increasing the reliability of the engine. The efficiency of the engine is achieved by the fact that in case of the previously described emergency engine stops and stops the supply of fuel when the engine is operating in mode 4-stroke compressor. Optimal thermal regime persists, decrease the wear of its parts and is supported by the ability of the engine to the perception of the load during operation of the engine. This device allows you to extend the functionality of the engine due to the use of it during operation of the engine retarder, this reduces the wear of the wheel brakes of the vehicle, especially on slippery is oroho, improves fuel economy of the engine, as when the engine deceleration fuel supply to the cylinders of the engine is terminated.

Device for emergency stop of the internal combustion engine and the motor deceleration of the vehicle containing the body of the overlapping section of the intake pipe, the setpoint position of authority overlap and the source of compressed air, characterized in that the setpoint position of authority floors are made in the form of a limit sensor crankshaft rotation speed, the drop sensor oil pressure sensor temperature increase of the coolant and the control buttons engine retarder, and the body of the overlapping section of the intake pipe is made in the form of a valve, connected in series by means of the pneumatic cylinder in the upper part of which is made from a calibrated orifice associated with the atmosphere, valve fuel supply associated with the highway fuel supply and with each of the above sensors through the check valve and the control light, and button control engine retarder and in series with the source of compressed air, while the sensors and the control button engine retarder are connected in parallel.



 

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