CN214944625U - Diesel oil preheating system for starting diesel oil engine in low-temperature environment - Google Patents
Diesel oil preheating system for starting diesel oil engine in low-temperature environment Download PDFInfo
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- CN214944625U CN214944625U CN202120828816.9U CN202120828816U CN214944625U CN 214944625 U CN214944625 U CN 214944625U CN 202120828816 U CN202120828816 U CN 202120828816U CN 214944625 U CN214944625 U CN 214944625U
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Abstract
The utility model discloses a diesel preheating system for starting diesel under the low temperature environment, which comprises a diesel temperature sensor, a diesel heater and a diesel heating controller, wherein the diesel heating controller is connected with the diesel temperature sensor and the diesel heater; the utility model discloses can realize that the vehicle uses an oil tank to load low-grade diesel oil and just can satisfy its work operation demand under winter low temperature environment, this scheme is significant to diesel engine uses low-cost low-grade diesel oil under winter low temperature environment.
Description
Technical Field
The utility model relates to a diesel oil that the diesel engine starts preheats the field. More specifically, the utility model relates to a diesel oil system of preheating of diesel engine start-up under satisfying low temperature environment.
Background
For diesel engine vehicles, in order to prevent diesel oil from being solidified and waxed under low temperature conditions in winter, conventional vehicles require users to use high-grade diesel oil with a lower melting point, while the cost of the high-grade diesel oil is increased by more than 15% compared with that of the low-grade diesel oil, which seriously increases the use cost of the vehicles of the users.
The existing commercial vehicle provided with a diesel engine can use low-cost low-grade diesel oil under the low-temperature environment in winter, and the equipped diesel oil heating system basically adopts a scheme of a main oil tank and an auxiliary oil tank, namely: the high-grade diesel oil meets the requirement that the engine is directly cold started in a low-temperature environment, and the low-grade diesel oil is normally supplied to the engine after the engine is heated through heating of high-temperature cooling liquid. This solution exists: firstly, the system is complex, the cost is increased, namely a special auxiliary oil tank is added, high-grade diesel oil needs to be used, the association between an engine cooling system and a main oil tank heating system needs to be realized, a multi-loop valve for switching between high-grade diesel oil and low-grade diesel oil needs to be added, and the like; before the cold start of the engine is carried out in a low-temperature environment in winter, firstly, the diesel oil supplied to the engine needs to be manually controlled and operated to be high-grade diesel oil from a secondary oil tank, when the temperature of the engine coolant rises to be enough to dissolve the low-grade diesel oil in the main oil tank, the diesel oil supplied to the engine needs to be manually controlled and operated to be low-grade diesel oil from the main oil tank, and before the engine is stopped for a long time and is flamed out, the diesel oil supplied to the engine needs to be manually controlled and operated again to be high-grade diesel oil from the secondary oil tank so as to ensure that the high-grade diesel oil is reserved in an oil supply pipeline of the engine, so that the complicated operation flow is very easy to cause the trouble caused by the omission of a user; the reliability is poor, the system is complex, the needed parts are more, and the overall reliability of the system is reduced.
SUMMERY OF THE UTILITY MODEL
In order to realize the objects and other advantages in accordance with the present invention, a preferred embodiment of the present invention provides a diesel preheating system for diesel engine startup in low temperature environment, comprising a diesel temperature sensor and a diesel heater, a diesel heating controller: wherein the diesel temperature sensor and the diesel heater are both disposed within a diesel tank; the diesel heating controller is connected to the diesel temperature sensor and the diesel heater.
The utility model discloses an offer in the preferred embodiment, still include diesel pump, oil outlet pipe, engine oil pump, high-pressure oil pump and oil return line, the diesel pump loops through oil outlet pipe engine oil pump, high-pressure oil pump and oil return line form the main loop, the diesel pump is followed diesel oil is gone into in the diesel tank pump in the oil outlet pipe, via in proper order again engine oil pump, high-pressure oil pump and oil return line flow back extremely in the diesel tank.
The utility model discloses an offer in the preferred embodiment, the generator oil pump with be provided with the thin filter of diesel oil between the high-pressure oil pump.
The utility model discloses an propose among the preferred embodiment, install the colating heater on the oil pipeline, it is located before the generator oil pump.
The utility model discloses an propose in the preferred embodiment, the normally closed relay is still connected to diesel oil heating controller, the starting circuit of normally closed relay contact disconnection/connection engine for control diesel vehicle opens and stops.
The utility model discloses a provide in the preferred embodiment, diesel oil temperature sensor with diesel oil heater interval certain distance.
In a preferred embodiment of the present invention, the strainer heater has a filtering portion and a heating portion.
The utility model discloses an offer in the preferred embodiment, oil outlet pipe with all install the check valve on the oil return pipe.
The utility model discloses at least, include following beneficial effect: the utility model discloses can realize that the vehicle uses an oil tank to load low-grade diesel oil and just can satisfy its work operation demand under winter low temperature environment. The scheme has great significance for using low-cost low-grade diesel oil by a diesel engine in a low-temperature environment in winter.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is the utility model discloses in a satisfy diesel oil preheating system's under low temperature environment frame construction schematic diagram of diesel engine start-up.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
As shown in fig. 1, a preferred embodiment of the present invention provides a diesel preheating system for starting a diesel engine in a low temperature environment, which comprises a diesel temperature sensor 1, a diesel heater 2, and a diesel heating controller 3:
wherein the diesel temperature sensor 1 and the diesel heater 2 are both arranged in a diesel tank 4; the diesel heating controller 3 connected to the diesel temperature sensor 1 and the diesel heater 2;
the diesel temperature sensor 1 monitors the diesel temperature in the diesel tank 4 in real time;
when the diesel oil temperature sensor 1 monitors that the temperature of the diesel oil is lower than a first preset value, the diesel oil heating controller 3 controls the diesel oil heater 2 to be started to heat the diesel oil.
In order to reduce the vehicle cost for diesel vehicle, can move winter low temperature condition and still can use low-cost low-grade diesel oil, still need not adopt the mode that the tradition was equipped with two oil tanks, this application provides a diesel oil preheating system who satisfies diesel oil startup under the low temperature environment, works as diesel oil temperature sensor 1 monitors the diesel oil temperature and is less than first default, then diesel oil heating controller 3 control diesel oil heater 2 starts, and is right diesel oil in the diesel oil tank 4 heats, just so can avoid the problem that mark number diesel oil takes place the wax precipitation and solidifies for even under the low temperature condition, also can use cheap low-grade diesel oil. The diesel heater 2 may be fixedly installed in the diesel tank 4.
It should be noted that, in consideration of a series of problems that low-grade diesel oil cannot be directly used in a low-temperature environment, and may cause blockage of an internal pipeline of an engine, and the engine is damaged or even directly scrapped irreversibly, in order to avoid a situation that the diesel oil is pumped into the engine without being heated to a proper condition, a preferred embodiment of the present application is further improved in that the diesel oil heating controller is further controlled and connected with a normally closed relay, a contact of the normally closed relay is disconnected/connected with a starting circuit of the engine, and is used for controlling starting and stopping of a diesel vehicle, and when the diesel oil heater heats the diesel oil, the normally closed relay is controlled to be disconnected from the starting circuit, and the engine is prevented from being started. Here, the diesel heating controller may directly control the normally closed relay to be disconnected from the starting circuit, or the diesel heating controller may send a message prompt to a display panel to prompt a user to disconnect the normally closed relay from the starting circuit.
When diesel oil is heated by the diesel oil heater 2, the problem of uneven diesel oil heating inevitably occurs, especially in the earlier stage of heating, the diesel oil temperature near the diesel oil heater 2 is higher, the diesel oil temperature far away from the diesel oil heater 2 is lower, the problem of paraffin hanging easily occurs in the whole pipeline, and the blockage is caused, in order to solve the technical problem, the diesel oil preheating system provided in the utility model adopts the preferable embodiment that the diesel oil preheating system further comprises a diesel oil pump 5, an oil outlet pipeline 6, an engine oil pump 7, a check valve 8, a high-pressure oil pump 9 and an oil return pipeline 10, the diesel oil pump 5 sequentially passes through the oil outlet pipeline 6, the engine oil pump 7, the check valve 8, the high-pressure oil pump 9 and the oil return pipeline 10 to form a main circulation, after the diesel oil heater 2 heats diesel oil for a preset time, before the diesel oil temperature reaches a second preset value, the diesel oil pump 5 is controlled to pump diesel oil from the diesel oil tank 4 into the oil outlet pipeline 10, and then flows back to the diesel tank 4 through the engine oil pump 7, the one-way valve 8, the high-pressure oil pump 9 and the oil return pipeline 10 in sequence. The process not only can further heat and raise the temperature with high efficiency, but also can ensure the uniformity of heating, and can realize the scouring, temperature raising and elimination of diesel oil waxing on the whole oil supply pipeline on the basis, thereby creating conditions for the normal work of an engine oil pump and a high-pressure oil pump so as to ensure the smooth starting and working of the engine. Wherein. It should be further noted that the engine oil pump 7 belongs to a low-pressure oil pump, which is mainly used for pumping diesel oil in a diesel oil tank, and the high-pressure oil pump 9 is also an inherent component of a diesel engine and is used for injecting diesel oil of the engine.
The utility model discloses an offer in the preferred embodiment diesel oil gets into before the generator oil pump, installation coarse filtration heater 14 carries out the coarse filtration to diesel oil and still heats diesel oil gets into before high-pressure oil pump 9, installation diesel oil fine filter 16 is to then carrying out further filtration, can effectively avoid the impurity in the diesel oil to get into the engine, plays fine protection maintenance to the engine.
When the diesel oil temperature sensor monitors that the temperature of the diesel oil reaches a second preset value, the diesel oil heating controller 3 controls the normally closed relay 11 to be connected with the starting circuit (here, the starting switch 12 is shown to be connected to start the engine 15, or the diesel oil heating controller sends an engine starting prompt to a display panel to prompt a user to start the engine.
When the diesel temperature sensor 1 monitors that the diesel temperature reaches a third preset value, the diesel heating controller 3 controls the diesel heater 2 to stop heating.
The diesel heating controller 3 controls the diesel pump 5 to stop operating while the generator is started.
In consideration of the problem that the oil temperature is low in the early heating period, and paraffin hanging may occur when low-grade diesel oil enters an oil supply pipeline inside an engine, and the problem that the oil supply pipeline inside the engine is fatal is caused, but the main cycle is also used in the diesel oil heating process to achieve uniform heating of the diesel oil, so that the diesel oil which is just heated but has not yet reached the temperature can not be directly pumped into the oil supply pipeline of the engine, in order to solve the problem, a secondary cycle is designed in the application, compared with the main cycle of the main cycle, the secondary cycle is a small cycle, because the related parts are few, the oil path is short, the diesel oil pump 5 in the main cycle is only used in the whole process, the efficiency is higher, the energy consumption is lower, and particularly, the diesel oil pump 5 sequentially passes through the oil outlet pipeline 6, The normally closed electric control switch valve 13 and the oil return pipeline 10 form a secondary circulation, after the diesel heater 2 heats the diesel for a preset time, the diesel pump 5 is controlled to pump the diesel into the oil outlet pipeline 6 from the diesel tank 4, and then the diesel flows back into the diesel tank through the oil return pipeline 10. Therefore, the diesel oil can be uniformly heated, and the low-temperature diesel oil can be prevented from entering an oil supply pipeline in the engine.
Before the main cycle is performed, the above-mentioned secondary cycle is performed, specifically, the secondary cycle is started after the main cycle is started for a predetermined time, that is, the following cycles are performed: the diesel pump loops through oil outlet pipe, normally closed electrically controlled switch valve and oil return pipe and forms the secondary cycle diesel heater heats diesel oil after the scheduled time, control the diesel pump follows diesel oil is pumped in the diesel tank in the oil outlet pipe, pass through oil return pipe, flow back extremely in the diesel tank. After the time is preset through the main cycle or the current value of the diesel pump is judged to reach the preset value, the following cycle is carried out: the diesel pump 5 loops through the oil outlet pipeline 6, the engine oil pump 7, the check valve 8, the high-pressure oil pump 9 and the oil return pipeline 10 form a main circulation, after the diesel heater 2 heats the diesel for a preset time, before the diesel temperature reaches a second preset value, the diesel pump 5 is controlled to pump the diesel into the oil outlet pipeline 10 from the diesel tank 4, and then flows back to the diesel tank 4 through the engine oil pump 7, the check valve 8, the high-pressure oil pump 9 and the oil return pipeline 10 in sequence.
When the diesel oil temperature sensor monitors that the temperature of the diesel oil reaches a fourth preset value, the diesel oil heating controller 3 controls the rough filtering heater 14 to stop working. The rough filtering heater 14 can not only heat but also play a role in filtering, and can promote the fuel to be liquefied quickly and also play a role in filtering. The strainer heater 14 has a filtering portion and a heating portion.
When the diesel oil temperature sensor monitors that the temperature of the diesel oil is lower than a first preset value, the diesel oil heating controller controls the diesel oil heater 2 to be started and the rough filtering heater 14 to work.
The utility model discloses an in the preferred embodiment provide, diesel oil temperature sensor 1 with diesel oil heater 2 interval certain distance, like this when the distance the temperature of the diesel oil that diesel oil heater 2 is far away is also up to standard, so the fuel near diesel oil heater 2 must also the temperature be up to standard certainly.
The utility model discloses an in the preferred embodiment provide, oil pipe 6 with all install the check valve on the oil return line 10 to fine control diesel oil flow direction.
The following also provides a diesel preheating method for meeting the starting requirement of the diesel under the low-temperature environment, which comprises the following steps:
step one, if the temperature of the diesel oil is monitored to be lower than a first preset value, the diesel oil heating controller 3 controls the diesel oil heater 2 and the rough filtering heater 14 to be started to heat the diesel oil;
after heating for a preset time or after the current load of the diesel pump reaches the standard, starting and controlling the diesel pump to pump diesel into the oil outlet pipeline from the diesel tank 4, and then reflowing into the diesel tank 4 through the engine oil pump 7, the one-way valve, the high-pressure oil pump and the oil return pipeline in sequence so as to improve the heating uniformity of the diesel;
thirdly, connecting the normally closed relay and the starting circuit until the temperature of the diesel reaches a second preset value, and controlling the diesel pump to stop working while starting the engine;
and step four, controlling the diesel heater to stop heating until the temperature of the diesel reaches a third preset value.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (8)
1. The utility model provides a diesel oil system of preheating that diesel oil engine started under satisfied low temperature environment which characterized in that, includes diesel oil temperature sensor and diesel oil heater, diesel oil heating controller: wherein the diesel temperature sensor and the diesel heater are both disposed within a diesel tank; the diesel heating controller is connected to the diesel temperature sensor and the diesel heater.
2. The diesel preheating system for meeting the requirement of diesel starting in a low-temperature environment according to claim 1, further comprising a diesel pump, an oil outlet pipeline, an engine oil pump, a high-pressure oil pump and an oil return pipeline, wherein the diesel pump sequentially passes through the oil outlet pipeline, the engine oil pump, the high-pressure oil pump and the oil return pipeline to form a main cycle, the diesel pump pumps diesel from the diesel tank into the oil outlet pipeline, and then sequentially passes through the engine oil pump, the high-pressure oil pump and the oil return pipeline to flow back into the diesel tank.
3. The diesel preheating system for starting a diesel engine in a low-temperature environment according to claim 2, wherein a diesel fine filter is arranged between the engine oil pump and the high-pressure oil pump.
4. The diesel preheating system for starting a diesel engine in a low temperature environment as set forth in claim 2, wherein a strainer heater is installed on the oil outlet pipe and located in front of the engine oil pump.
5. The diesel preheating system for starting the diesel engine in the low-temperature environment according to claim 1, wherein the diesel heating controller is further connected with a normally closed relay, and a contact of the normally closed relay is disconnected with a starting circuit of the engine for controlling the start and stop of the diesel vehicle.
6. The diesel preheating system for satisfying diesel startup in low temperature environment of claim 2, wherein the diesel temperature sensor is spaced a distance from the diesel heater.
7. The diesel preheating system for satisfying diesel engine startup in a low temperature environment of claim 4, wherein the strainer heater has a filtering portion and a heating portion.
8. The diesel preheating system for starting a diesel engine in a low temperature environment of claim 2, wherein a check valve is installed on both the oil outlet pipe and the oil return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120828816.9U CN214944625U (en) | 2021-04-21 | 2021-04-21 | Diesel oil preheating system for starting diesel oil engine in low-temperature environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120828816.9U CN214944625U (en) | 2021-04-21 | 2021-04-21 | Diesel oil preheating system for starting diesel oil engine in low-temperature environment |
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| CN214944625U true CN214944625U (en) | 2021-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508433A (en) * | 2022-02-16 | 2022-05-17 | 一汽解放汽车有限公司 | Control method of fuel supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508433A (en) * | 2022-02-16 | 2022-05-17 | 一汽解放汽车有限公司 | Control method of fuel supply system |
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