System to maintain availability for start-up of internal combustion engine of diesel locomotive

FIELD: engines and pumps.

SUBSTANCE: system to maintain availability for start-up of an internal combustion engine (7) of a diesel locomotive comprises a standard system (4) for cooling of an internal combustion engine (7), a liquid heater (1), connected to the main manifold of the standard cooling system (4), a standard fuel system (18) of an internal combustion engine with a standard fuel tank (23) and a standard injecting fuel pump (19), an additional fuel tank (20), equipped with an overflow pipeline (21), a drain pipeline (22) with a tap and a pipeline connecting the additional fuel tank (20) with the liquid heater (1). There is an additional fuel pump (17), installed in the standard fuel system (18) in parallel to the standard injecting fuel pump (19), an additional oil pump (11), connected in parallel to the standard injecting oil pump (43), a device (15) for booster charge of an accumulator battery (16) of a diesel locomotive, maintaining it in the condition of availability for start-up of the internal combustion engine, and cooling coolant temperature sensors (13) for control of system operation, connected into the pipeline (46) with the lowest coolant temperature in the cooling system of the internal combustion engine. The additional fuel tank (20) of the system is connected into the drain pipeline of the standard fuel system (18) for provision of its reliable filling with diesel fuel. Additional circulating water pumps (30) are installed on inlet pipelines of standard liquid heaters (28) of air in driver's cabins (29) for provision of conditions in them for start-up of the internal combustion engine (7). Supply of the liquid heater (1), circulating electric motors (8), oil (11) and fuel pumps (17), a device (15) for booster charge of the diesel locomotive accumulator battery (16) and elements of the control system (47) is arranged via a separate cabinet (48) of electric equipment from the external source of energy.

EFFECT: increased reliability of system operation and increased time for engine standing idle in cold time of the year as continuously available for start-up.

1 dwg

 

The invention relates to internal combustion engines, in particular to their funds run by the heated fluid in the cooling system of the internal combustion engine locomotives, and other vehicles and mobile diesel power plants.

Known heating system of the internal combustion engine and heat the interior of the vehicle containing the heating unit with a thermal battery that is charged by the waste heat of the exhaust gases. The heating unit is embedded in the channel of the exhaust system and in the path of circulation of the coolant (antifreeze). The main functional modes of the system are the mode preheating cold engine and interior of the vehicle, and when the engine is running - charging mode of heat storage and heat the interior of the vehicle. (EN. Patent No. 2293207, CL F02N 17/04, 2007)

A disadvantage of the known system is that the heating unit embedded in the channel of the exhaust system changes the current engine operating modes, mode preheating a cold engine is not heating the oil and heat accumulator retains heat for a limited time.

Known electric heating system of the locomotive THE capacity of 12000 PS intended for BAM containing elektroobogrevatel, water Sipper pump, alopaecia pump, priming diesel pump. AC of elektroobogrevateli and motors Sipper units is performed from stand-alone diesel generator mounted on and connected with a locomotive mobile unit. The water system is designed in a way that provides for the necessary circulation of water through elektroobogrevatel and all heated units, as well as joint work of the system of heating and diesel to accelerate warm it up. (Especially rolling stock designed to operate at low temperatures. Abstract collection 5-80-10, CREATEITEMS. MOSCOW. 1980)

The disadvantages of the known system are its large size and weight due to the large capacity of elektroobogrevateli and feeding it to a diesel generator.

Also known automated heating system diesel locomotives at the hot simple, containing a heater system cooling diesel, heating oil and fuel systems connected to supply fuel through the fuel pump to the fuel tank of the locomotive and are equipped with pumps for pumping the water in the contours of circulation, ventilation system for removal of products of combustion into the atmosphere through the pipe of the locomotive and the remote control system and alarm system on the locomotive and the remote control of the I, placed in the location of the duty station. Pumps, fans and control system heaters connected to the battery through the power conversion and voltage regulation. In addition, the heating system contains sensors control thermal regime in the contours of the cooling system of diesel engine, oil and fuel systems, sensor control voltage on the battery, and remote control modes heaters contains blocks sound and light alarm on the locomotive and the transmitter of the radio signals of normal and emergency modes of operation of the heaters to alert the duty station, in the duty room hosted receiver with alarm unit, which reflects the digital numbers of the locomotives and modes of operation of the heaters. (EN. Patent No. 2324826, CL F01M5/02, F02N 17/04, UK 11/00, 2006)

A disadvantage of the known system is that the pumps, fans and control system heaters connected to the battery through the power conversion and voltage regulation, and when the system is warming up, there is a discharge of the batteries of the locomotive, respectively, significantly reduced the duration of operation of the system is warming up because of the battery must always be maintained in a charged condition to ensure the smooth running of the diesel engine./p>

Also known Autonomous automatic heating system and maintain pre-temperature conditions of the internal combustion engines of high power for rail, water transport and mobile diesel power plants, containing two liquid heater with electronic control, which is connected to the main staff of the cooling system through four additional pipeline and three check valves, one of which is installed on the main plot line of the standard cooling system, and the other two on the output of each of the liquid heaters, additional oil pump, the inlet of which with additional oil pipeline connected to the crankcase of the engine, and the output of the second additional oil pipeline connected to the cylinder head of the engine through a specially perforated to technological channels of discharge excess oil temperature sensor oil installed at the bottom of the crankcase, two of the coolant temperature sensor, installed one at the outlet of each liquid heater, remote control, microprocessor controller with the recorded control program containing a duplex GSM module and connected via cable to the remote control, the electronic unit the control of heaters, to the supply terminals of additional oil pump, sensor oil temperature, two temperature sensors, coolant, Autonomous power supply connected to the controller and two liquid heaters. (EN, useful model # 70693 U1, CL F02N 17/06, 2008)

A disadvantage of the known system is that it does not ensure the maintenance of pre-temperature conditions of a diesel fuel internal combustion engines and maintain the capacity of the battery when not running the engine. Heating oil is produced by water is not effectively through steel diesel unit (cold oil is supplied to the diesel engine through a specially perforated, technological channels discharge of excess oil). Installation of temperature sensors one coolant at the outlet of each liquid heater does not provide full control over the temperature change in hazardous areas of the cooling system and does not preclude the freezing of the fluid in the parallel branches of the system with low flow and high heat loss. Heating the cabin is calorifere locomotive with cooled low temperature, which leads to its low efficiency.

Also known is a system for starting an internal combustion engine, containing the engine cooling system internally what about combustion, liquid heater, connected to the main staff of the cooling system, temperature sensors, coolant, standard fuel system of an internal combustion engine with the standard fuel tank and fuel pre-supply pump, an additional oil pump, independent power supplies are made in the form of diesel generator sets with device charging the starter battery of the locomotive, the system for starting an internal combustion engine equipped with an additional fuel tank, equipped with overflow pipe connected to a drain pipe with the standard fuel tank, pipeline valve and throttle connecting additional fuel tank with fuel injection regular fuel pipeline system, pipeline valve, connecting additional fuel tank with fuel line of a diesel generator set, pipeline valve and pipeline connecting additional fuel tank with liquid heater, standard fuel system parallel to the pre-supply fuel pump installed additional fuel pump, additional oil pump connected in parallel to the standard Sipper oil pump, temperature sensors coolant to control the operation of the system is included in the pipe the wire with the lowest temperature of the coolant of the cooling system of the internal combustion engine during operation of the system for starting an internal combustion engine. (EN. Patent No. 2422669, CL F02N 19/04, 2011)

A disadvantage of the known system is that changing the mode of the additional filling of the fuel tank due to throttle installed in the supply pipe, depending on fuel temperature (changing the density of diesel fuel), which can lead to the complete emptying of the additional fuel tank with a large consumption of fuel system for starting an internal combustion engine (at low temperature); heating the cab drivers do not use regular liquid heater cab, as due to the presence of parallel paths in a water circulation system through the liquid heater insufficient, that does not preclude the freezing of the fluid in separate tubes and reduces the reliability of the system for starting an internal combustion engine as a whole; in addition, the use of a diesel generator as the power source leads to a significant increase in system cost, complexity and expenditure of funds for maintenance of the entire system.

The technical result of the invention is to improve reliability of the system to maintain to the start of the internal combustion engine of the locomotive, the more idle time idle of the internal combustion engine in the cold season in posto is authorized willingness to run at the expense of guaranteed permanent filling the fuel auxiliary fuel tank, located in the drain pipe of the regular fuel system, the fuel is always heated in toplivopotreblenie that reduces the likelihood of formation of paraffin sediments him in pipelines and fuel filters at low ambient temperatures; the use of additional Sipper pump inlet in a regular liquid heaters helped to considerably increase the circulation of hot fluid through them, which increases the efficiency of heating the cab and allows you to refuse the setting of additional heaters air; applying additional heater air in the cab of the locomotive and a diesel generator as an energy source can significantly reduce the cost and maintenance costs maintenance system for starting internal combustion engine.

This technical result is achieved by the fact that in the system to maintain readiness for the start of the internal combustion engine of the locomotive containing the standard cooling system of the internal combustion engine, at least one liquid heater, connected to the main staff of the cooling system, standard fuel system of an internal combustion engine with the standard fuel tank and the standard pre-supply fuel pump, additional toplin the second tank, equipped with overflow pipe, drain pipe with valve and pipeline connecting additional fuel tank with at least one liquid heater, extra fuel pump, installed in the standard fuel system parallel to the regular pre-supply fuel pump additional oil pump, connected in parallel to the regular pumping over the oil pump, the device of the charging locomotive battery, keep it in a state of readiness for the start of the internal combustion engine, a temperature sensor coolant cooling to control the operation of the system, included in the pipeline with the lowest temperature of the coolant of the cooling system of the internal combustion engine, a system to maintain readiness for the start of the internal combustion engine locomotive equipped with an additional fuel tank system included in the drain pipe of the regular fuel system to ensure reliable filling of diesel fuel, additional circulating water pumps installed on the inlet piping of the regular liquid heaters air cabs to provide them in terms of start of the internal combustion engine; a power electric motors circulation, oil and fuel n is sasov, device charging locomotive battery and control system is made through a separate Cabinet from the external energy source.

The drawing shows a diagram of a system for maintaining readiness for the start of the internal combustion engine heated current environment of the cooling system.

A system to maintain readiness for the start of the internal combustion engine of the locomotive contains at least one liquid heater 1 with electronic control, which is connected to the main pipeline routes 2 and 3 of the standard cooling system 4, which includes a hot circuit 5 and the cold circuit 6 of the internal combustion engine (e.g. diesel) 7 series with an additional circulation pump 8 (one or more), overflow pipes 9 and 10, an additional oil pump 11 is connected in parallel to the standard oil pump 12, a sensor 13, the temperature of the coolant of the cooling, the outlet 14 for connection to an external power source, the charging device 15 the battery 16 of the locomotive, supporting it in the ready state to the running of the internal combustion engine 7, an additional fuel pump 17, mounted in a standard fuel system 18 parallel to the regular fuel pre-supply pump 19, an additional is toplivnyy tank 20, equipped with overflow pipe 21 which is connected a drain pipe 22 with the standard fuel tank 23, pipe 24 with the valve connecting additional fuel tank 20 with overflow fuel pipe 25 regular fuel system 18, the pipe 26 with the valve and the pipe 27 connecting the additional fuel tank 20 with liquid heater 1 is installed on the pipeline bypass 9 or 10 of the standard cooling system 4. On the pipeline 2 at the entrance to the regular liquid heaters 28 of the air in the cab 29 is installed an additional circulation pump 30 (one per cabin).

The standard fuel system 18 of the internal combustion engine 7 consists of a fuel tank 23, a regular fuel pre-supply pump 19, drain the fuel pipe 25, the pressure reducing valve 31, toplivopodayuschaya 32, the suction-discharge device 33, all elements are connected by a pipe 34.

Standard cooling system of the internal combustion engine 7 is composed of 5 hot and cold 6 paths. Hot circuit 5 includes regular circulation pump 35, a liquid cavity cooling 36 of the internal combustion engine 7, the cooler 37, cavity toplivopodayuschaya 32 (e.g., water), regular liquid air heater 28 in the cab 29, all items are hot Contura United pipe line 2. The cold circuit 6 includes a standard circulating pump 38, the charge-air cooler 39, oil-water heat exchanger 40 and the cooling radiator 41, all of the elements of the cold circuit United pipe line 3.

Standard oil system 42 of the internal combustion engine 7 consists of regular pumping over of the oil pump 43, the oil cavities of water-oil heat exchanger 40 and the oil channels 44 lubrication of the internal combustion engine 7, all elements of the system are connected by a pipe 45.

Regular liquid air heater 28 in the cab 29 is connected with the standard circulation pump 35 by a pipe 46 with installed circulating pump 30 and the sensors 13, the temperature of coolant for cooling control system included in the pipe 46 with the low temperature cooling of the internal combustion engine 7. The installation location of the sensors is defined as the place with the lowest temperature of the coolant of the cooling system of the internal combustion engine 7-mode system operation to start the internal combustion engine of the locomotive.

Feeding a liquid heater 1 (one or more), electric motors circulation 8 and 30, additional oil 11 and 17 fuel pumps, charging device 15 of the battery BA is area 16 of the locomotive and control system 47 is made through a separate Cabinet 48 from an external source of energy, supplied to the outlet 14.

A system to maintain readiness for the start of the internal combustion engine of the diesel locomotive works in the following way.

When operating the internal combustion engine 7 fuel regular fuel system 18 serves regular fuel pre-supply pump 19, is supported by the fuel pressure at the required level of the reducing valve 31. On a regular drain the fuel pipe 25 has an additional fuel tank 20, in which the fuel is supplied by pipeline 24 to the faucet, and the excess fuel blend by flowing pipe 21 and through the drain pipe 22 in a regular fuel tank 23. When stopping the internal combustion engine 7 and the translation of the locomotive, or other vehicle, or mobile power mode of sludge, the operator connects to the outlet 14 of the locomotive power cable from an external source, thus ensuring the supply of liquid to the heater 1, the electric motors circulation 8 and 30, the oil 11 and the fuel pump 17, the charging device 15 battery 16 of the locomotive and control system 47 through a separate Cabinet 48.

Mode of sludge locomotive in accordance with the algorithm and depending on the temperature of the liquid (e.g. water), oil and fuel include the I three circulation system fluids, fuel 18, oil 42, cooling 4.

When the additional fuel pump 17 that is installed in a regular fuel system 18 parallel to the pre-supply fuel pump 19, provides for the fuel in the auxiliary fuel tank 20 and the circulation of fuel throughout the fuel system 18 of the internal combustion engine 7, thereby using the standard device of the locomotive (e.g., toplivopodachej 32, the suction-discharge device 33 in the suction pipe of a regular fuel pre-supply pump 19) for heating fuel.

When the additional oil pump 11 that is installed in the standard oil system 42 of the internal combustion engine 7 parallel standard Sipper oil pump 43 circulates oil throughout the oil system of the internal combustion engine 7, thereby using heating oil standard device - oil-water heat exchanger 40 and the oil channels 44 lubrication of the internal combustion engine 7.

When the additional circulation pump 8 and a liquid heater 1 (one or more)connected to the standard cooling system 4, is provided by heating all of the coolant of the internal combustion engine 7 during sludge locomotive. Heated liquid coolant heater 1 (one or more) occur the it team from the sensors 13 temperature, installed on the pipe 46 of the coolant in the place with the largest cooling rate and, accordingly, with the lowest temperature. On the locomotives of this place, as a rule, is the pipe 46 connecting the liquid air heater 28 in the cab 29 with the suction line of standard circulation pump 35.

The heated liquid coolant from the heater 1 (one or more) to the input of the pump 35 hot circuit 5 and then through a liquid cavity cooling 36 of the internal combustion engine 7 at the entrance to the cooling radiators 37 hot circuit 5, in toplivopodachej 32 and to the input of an additional circulation pump 30, then in liquid air heater 28 of the cab drivers 29; at the entrance to the cooling radiators 37 hot circuit 5, the flow is divided into two: one in the cooling radiators 37 hot circuit 5, and the other by a bypass pipe 10 to the input of standard circulation pump 38 cold loop 6 where is split again into two streams: one through the cooling radiator 41 cold loop 6 reverse current flows into the suction pipe additional circulation pump 8 fluid heater 1, and the other is via a standard circulating pump 38 cold loop 6, the charge-air cooler 39 and the oil-water is lopment 40 is also provided on the absorption of additional circulation pump 8 fluid heater 1.

The coolant flowing through the pipe 46, the output of the standard liquid air heater 28 has the highest cooling rate because of the remoteness of this branch from the internal combustion engine 7 and the small diameter pipe 46, for this reason, the pipe 46 is the most suitable place for installation of the sensors 13, the temperature of the coolant of the cooling on this locomotive. When the heating system of the internal combustion engine 7, the heating of the driver's cab 29 is a regular liquid air heater 28.

Use an external power supply to the device charging the starter battery 15, for example, locomotive, allows you to be the locomotive in the warm-up mode indefinitely (until the end of the fuel in the tank of the locomotive), preserving the life of the internal combustion engine 7, increasing reliability and allowing startup of the internal combustion engine 7 at any time.

The sensors 13, the temperature of the coolant, installed in the cold pipe 46 of the cooling system of the internal combustion engine 7, a timely signal to the heating system when the temperature of the heat carrier limit values, providing a reliable monitoring TEPLOSET the lei of the internal combustion engine 7.

Use the cab drivers 29 staff of the air heater 28 with an additional circulation pump 30 allows to maintain the temperature of the air in the cab 29 at the required level during the entire operating time of system warm-up, providing in the cab 29 acceptable conditions for starting the internal combustion engine 7.

A system to maintain readiness for the start of the internal combustion engine of the locomotive containing the standard cooling system of the internal combustion engine, at least one liquid heater, connected to the main staff of the cooling system, standard fuel system of an internal combustion engine with the standard fuel tank and the standard pre-supply fuel pump, extra fuel tank, equipped with overflow pipe, drain pipe with valve and pipeline connecting additional fuel tank with at least one liquid heater, additional fuel pump installed in the standard fuel system parallel to the regular pre-supply fuel pump additional oil pump connected in parallel to the standard Sipper oil pump, the device is charging locomotive battery, keep it in a state of readiness to launch dvigatelestroenija combustion, sensors temperature of coolant for cooling control system included in the pipeline with the lowest temperature of the coolant of the cooling system of the internal combustion engine, characterized in that the auxiliary fuel tank system is included in the drain pipe of the regular fuel system to ensure reliable filling of diesel fuel, additional circulating water pumps installed on the inlet piping of the regular liquid heaters air cabs to provide them in terms of start of the internal combustion engine, the power liquid heater, electric motors circulation, oil and fuel pumps, charging locomotive battery and control system is made through a separate Cabinet from the outside an energy source.



 

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