Large diesel car winter fuel heating and thickening system

Abstract

The utility model relates to a large -scale diesel car winter fuel heating thickening system belongs to transport equipment technical field, aims at solving the problem that low -grade diesel is difficult to use under low temperature environment, the system includes main oil tank, auxiliary oil tank, main auxiliary oil tank switch valve, small circulating system and PLC control system, small circulating system utilizes coolant circulation heating low -grade diesel, and main auxiliary oil tank is connected with engine oil circuit through two -way six -way electromagnetic switch valve, and main oil tank outlet pipeline is sleeved with solenoid, and the temperature sensor is used for real -time monitoring the oil tank temperature, and the solenoid magnetic field reduces viscosity, the utility model makes low -grade diesel normal use in -30 below zero environment, significantly reduces fuel cost, and reduces engine damage through magnetic field viscosity reduction, switches to auxiliary oil tank and fills high -grade diesel when parking, ensures reliable next time starting, and has economic benefit and security.

Description

Technical Field

[0001] This utility model belongs to the field of transportation equipment technology, and specifically relates to a winter fuel heating and thickening system for large diesel vehicles. Background Technology

[0002] In northern regions, winter weather is characterized by rapid climate changes and low temperatures. Diesel vehicles require the use of diesel fuel of a specific grade to ensure the normal operation of the engine, which increases fuel costs. This is especially true for long-haul transport vehicles, which cannot switch to lower-grade diesel fuel in a timely manner. To address this issue, automakers have developed dual-tank products, including manually controlled dual-chamber fuel tanks and electrically controlled dual-chamber fuel tanks, which use the ambient temperature outside the vehicle to determine the appropriate grade of diesel fuel to start the engine.

[0003] However, some problems still exist. Traditional fuel heating systems mainly consist of a dual-chamber fuel tank and an integrated fuel switching valve, which integrates the switching of high and low grade fuels, fuel level indication, coolant heating, and electronic on / off functions of coolant pipes. This type of system usually requires the driver to judge whether the fuel needs to be defrosted based on experience and then manually operate the switching switch. This is not only inaccurate, but may also cause the switching valve and fuel filter to become clogged, leading to engine stalling. At the same time, when the fuel line temperature rises and the auxiliary fuel tank is switched to the main fuel tank, the fuel line has just reached the ideal temperature. At this time, the viscosity of diesel is high, and the atomization is not ideal, which will have adverse effects on the engine, such as incomplete combustion and increased carbon deposits. If the high grade diesel from the auxiliary fuel tank is used to further increase the temperature, it will be wasteful. Utility Model Content

[0004] The purpose of this invention is to address the problems of traditional fuel heating systems by developing an electronically delayed fuel heating system. This system can accurately determine whether the fuel has thawed, delay fuel switching, and improve fuel efficiency and safety. Simultaneously, it also considers how to ensure the normal use of low-octane diesel fuel in low-temperature environments while reducing the cost of high-octane fuel. This not only improves vehicle starting performance but also reduces operating costs for businesses, offering significant economic benefits and safety advantages.

[0005] This utility model provides a winter fuel heating and thickening system for large diesel vehicles, including a main fuel tank and an auxiliary fuel tank, as well as a main-auxiliary fuel tank switching valve and a small circulation system. The small circulation system consists of an engine, a parking liquid heater, and an immersion coil heat exchanger connected by coolant pipelines. The immersion coil heat exchanger is located inside the main fuel tank. The main fuel tank and the auxiliary fuel tank are connected to the engine via fuel pipelines and the main-auxiliary fuel tank switching valve. An electromagnetic coil is installed on the fuel pipeline between the main fuel tank and the main-auxiliary fuel tank switching valve.

[0006] Furthermore, the parking fluid heater is provided with a parking fluid heater inlet, a parking fluid heater outlet, a parking fluid heater liquid outlet, and a parking fluid heater inlet; the engine is provided with an engine liquid inlet, an engine liquid outlet, an engine oil outlet, and an engine oil inlet; the parking fluid heater inlet is connected to the outlet of the auxiliary fuel tank; the parking fluid heater outlet is connected to the inlet of the auxiliary fuel tank; the parking fluid heater outlet is connected to the engine liquid inlet; the parking fluid heater inlet is connected to the outlet of the immersion coil heat exchanger in the main fuel tank; and the immersion coil heat exchanger inlet is connected to the engine liquid outlet.

[0007] Furthermore, it also includes a PLC control system.

[0008] Furthermore, the main and auxiliary oil tank switching valve is a two-position six-way solenoid directional valve. The main and auxiliary oil tank switching valve is electrically connected to the PLC control system. The main and auxiliary oil tank switching valve includes a first valve body port, a second valve body port, a first working port, a second working port, a third working port, and a fourth working port. The first valve body port can be switched to either the first working port or the fourth working port, and the second valve body port can be switched to either the second working port or the third working port. The first valve body port is connected to the engine oil outlet, the second valve body port is connected to the engine oil inlet, the first working port is connected to the auxiliary oil tank inlet, the second working port is connected to the auxiliary oil tank outlet, the third working port is connected to the main oil tank outlet, and the fourth working port is connected to the main oil tank inlet.

[0009] Furthermore, the electromagnetic coil is sleeved on the pipeline connecting the oil outlet of the main oil tank and the third working oil port. The electromagnetic coil is electrically connected to the PLC control system. A temperature sensor is also installed inside the main oil tank, and the temperature sensor is electrically connected to the PLC control system.

[0010] Furthermore, the small circulation system also includes a temperature control valve, which is electrically connected to the PLC control system.

[0011] Furthermore, it also includes a time-delay relay, which is installed in the engine circuit. Beneficial effects

[0012] 1. This utility model uses a temperature sensor to monitor the temperature inside the main fuel tank in real time, and combines it with a PLC control system to achieve precise control of the main fuel tank temperature, thereby improving fuel efficiency. 2. This utility model uses a cooling system to heat the main fuel tank, which allows low-grade diesel fuel to melt rapidly at temperatures of -30 degrees Celsius or lower. The main and auxiliary fuel tank switching valve ensures the normal operation of the engine fuel system, effectively enabling the normal use of low-grade diesel fuel in winter and significantly reducing fuel costs. 3. This utility model, through the combined use of an electromagnetic coil and a temperature control valve, can automatically activate a magnetic field to reduce the viscosity of low-temperature diesel fuel when the main fuel tank temperature just reaches the set value. This effectively solves the problem of extra consumption due to the need to use more high-grade diesel fuel in low-temperature environments or the problem of engine damage caused by premature switching of the main fuel tank. 4. When the vehicle is parked, the two-position six-way solenoid directional valve switches to the auxiliary fuel tank and runs for a set time to fill the engine fuel system with pure high-grade diesel fuel. At the same time, it ensures that the main fuel tank and the auxiliary fuel tank do not cross-contaminate, thus ensuring the reliability and stability of the vehicle's next start. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a winter fuel heating and thickening system for a large diesel vehicle.

[0014] Figure 2 This is a flowchart illustrating the workflow of a winter fuel heating and thickening system for a large diesel vehicle.

[0015] The components include: 1. Engine; 2. Electromagnetic coil; 3. Temperature control valve; 4. Main and auxiliary oil tank switching valve; 41. First valve body oil port; 42. Second valve body oil port; 43. First working oil port; 44. Second working oil port; 45. Third working oil port; 46. Fourth working oil port; 5. Main oil tank; 6. Immersed coil heat exchanger; 7. Temperature sensor; 8. Auxiliary oil tank; 9. Parking liquid heater. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1 As shown, a large diesel vehicle winter fuel heating and thickening system includes a main fuel tank 5 and an auxiliary fuel tank 8, as well as a main-auxiliary fuel tank switching valve 4, a small circulation system, and a PLC control system. The small circulation system consists of an engine 1, a parking liquid heater 9, and an immersion coil heat exchanger 6 connected by coolant pipelines. The immersion coil heat exchanger 6 is located inside the main fuel tank 5. The main fuel tank 5 and the auxiliary fuel tank 8 are connected to the engine 1 via fuel pipelines through the main-auxiliary fuel tank switching valve 4. An electromagnetic coil 2 is installed on the fuel pipeline between the main fuel tank 5 and the main-auxiliary fuel tank switching valve 4.

[0018] The parking fluid heater 9 is provided with a parking fluid heater inlet 91, a parking fluid heater outlet 92, a parking fluid heater liquid outlet 93, and a parking fluid heater inlet 94. The engine 1 is provided with an engine inlet 11, an engine outlet 12, an engine outlet 13, and an engine inlet 14. The parking fluid heater inlet 91 is connected to the outlet of the auxiliary fuel tank 8, the parking fluid heater outlet 92 is connected to the inlet of the auxiliary fuel tank 8, the parking fluid heater outlet 93 is connected to the engine inlet 11, the parking fluid heater inlet 94 is connected to the outlet of the immersion coil heat exchanger 6 in the main fuel tank 5, and the inlet of the immersion coil heat exchanger 6 is connected to the engine outlet 12.

[0019] The main and auxiliary oil tank switching valve 4 is a two-position six-way solenoid directional valve. The main and auxiliary oil tank switching valve 4 is electrically connected to the PLC control system. The main and auxiliary oil tank switching valve includes a first valve body port 41, a second valve body port 42, a first working port 43, a second working port 44, a third working port 45, and a fourth working port 46. The first valve body port 41 can be switched to either the first working port 43 or the fourth working port 46, and the second valve body port 42 can be switched to either the second working port 44 or the third working port 45. Oil port 41 is connected to engine oil outlet 13, second valve body oil port 42 is connected to engine oil inlet 14, first working oil port 43 is connected to auxiliary oil tank 8 inlet, second working oil port 44 is connected to auxiliary oil tank 8 outlet, third working oil port 45 is connected to main oil tank 5 outlet, and fourth working oil port 46 is connected to main oil tank 5 inlet. The main and auxiliary oil tank switching valve 4 is electrically connected to PLC control system 2. The PLC control system controls the main and auxiliary oil tank switching valve 4 to switch between main oil tank 5 and auxiliary oil tank 8 to supply oil to the engine.

[0020] The electromagnetic coil 2 is sleeved on the pipeline connecting the oil outlet of the main oil tank 5 and the third working oil port 45. The electromagnetic coil 2 is electrically connected to the PLC control system. The magnetic field strength of the electromagnetic coil 10 is 100mT. A temperature sensor 7 is also installed in the main oil tank. The temperature sensor 7 is electrically connected to the PLC control system 2. The temperature sensor 7 is used to detect the oil temperature in the main oil tank 5.

[0021] The small circulation system also includes a temperature control valve 3, which is electrically connected to the PLC control system 2. The temperature control valve is a Delixi 2W160-15, 24V solenoid valve.

[0022] The parking fluid heater 9 is a YJ-Q35 / 2 type parking fluid heater.

[0023] The PLC control system is a single-chip microcomputer.

[0024] It also includes a time-delay relay, which is installed in the engine circuit.

[0025] The work process is as follows: like Figure 2 As shown, the main fuel tank 5 of the large diesel vehicle is filled with low-grade diesel, and the auxiliary fuel tank 8 is filled with high-grade diesel. After the vehicle is powered on, when the temperature sensor 7 detects that the temperature of the diesel in the main fuel tank is below the freezing point, it switches the main-auxiliary fuel tank switching valve 4 to the auxiliary fuel tank. The auxiliary fuel tank supplies fuel to the parking coolant heater 9 and starts the parking coolant heater 9. When the coolant temperature of the small circulation system rises above 0 degrees, the engine 1 starts and then the parking coolant heater is turned off. At this time, the engine uses the high-grade diesel fuel filled in the auxiliary fuel tank. After driving for a period of time, as the coolant temperature rises, the immersion coil heat exchanger 6 raises the temperature of the low-grade diesel fuel in the main tank. When the temperature of the low-grade diesel fuel in the main tank reaches above the melting point, the main / auxiliary tank switching valve switches to supply fuel to the main tank. At the same time, the solenoid coil 2 is activated. After the solenoid coil is energized, it generates a magnetic field, which reduces the viscosity of the low-temperature diesel fuel. When the diesel fuel temperature in the main tank is high, the solenoid coil is turned off. When the diesel fuel temperature in the main tank reaches the set high temperature value, the temperature control valve 3 cuts off the coolant supply to the main tank and sends the coolant to the vehicle's cooling system for normal circulation to prevent the temperature of the main tank from becoming too high. When the diesel fuel temperature in the main tank reaches the set low temperature value, the temperature control valve opens the coolant supply to the main tank to prevent the temperature of the main tank from becoming too low, so that the diesel fuel temperature in the main tank is always kept within a reasonable range.

[0026] When the vehicle is parked, after the ignition switch is turned off, the main and auxiliary fuel tank switching valve is de-energized. The mechanical structure of the two-position six-way directional valve pushes the valve core back to the initial auxiliary fuel tank position, automatically switching the fuel circuit to the normally open auxiliary fuel tank. A time-delay relay synchronously maintains engine operation for a set time, filling the fuel line with high-octane diesel fuel from the auxiliary tank. After the delay, the engine shuts off, facilitating the next start. When the main fuel tank is filled with high-octane diesel fuel, as long as the main fuel tank temperature is low, the solenoid coil power supply generates a magnetic field to reduce the viscosity of the low-temperature diesel fuel.

[0027] The main and auxiliary fuel tank switching valve 4, the solenoid coil 2, and the temperature control valve 3 are all powered by the car battery.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A winter fuel heating and thickening system for large diesel vehicles, comprising a main fuel tank (5) and an auxiliary fuel tank (8), characterized in that, It also includes a main and auxiliary fuel tank switching valve (4) and a small circulation system. The small circulation system is an engine (1), a parking liquid heater (9) and an immersion coil heat exchanger (6) connected by a coolant pipeline. The immersion coil heat exchanger (6) is installed in the main fuel tank (5). The main fuel tank (5) and the auxiliary fuel tank (8) are connected to the engine (1) through a fuel pipeline via the main and auxiliary fuel tank switching valve (4). An electromagnetic coil (2) is installed on the fuel pipeline between the main fuel tank (5) and the main and auxiliary fuel tank switching valve (4).

2. The large diesel vehicle winter fuel heating and thickening system according to claim 1, characterized in that, The parking liquid heater (9) is provided with a parking liquid heater inlet (91), a parking liquid heater outlet (92), a parking liquid heater liquid outlet (93) and a parking liquid heater inlet (94). The engine (1) is provided with an engine liquid inlet (11), an engine liquid outlet (12), an engine oil outlet (13) and an engine oil inlet (14). The parking liquid heater inlet (91) is connected to the outlet of the auxiliary oil tank (8). The parking liquid heater outlet (92) is connected to the inlet of the auxiliary oil tank (8). The parking liquid heater outlet (93) is connected to the engine liquid inlet (11). The parking liquid heater inlet (94) is connected to the outlet of the immersion coil heat exchanger (6) in the main oil tank (5). The inlet of the immersion coil heat exchanger (6) is connected to the engine liquid outlet (12).

3. A large diesel vehicle winter fuel heating and thickening system according to claim 2, characterized in that, It also includes a PLC control system.

4. A large diesel vehicle winter fuel heating and thickening system according to claim 3, characterized in that, The main and auxiliary oil tank switching valve (4) is a two-position six-way solenoid directional valve. The main and auxiliary oil tank switching valve (4) is electrically connected to the PLC control system. The main and auxiliary oil tank switching valve includes a first valve body port (41), a second valve body port (42), a first working port (43), a second working port (44), a third working port (45), and a fourth working port (46). The first valve body port (41) can be switched to either the first working port (43) or the fourth working port (46). The second valve body port (42) It can be switched to the second working oil port (44) or the third working oil port (45). The first valve body oil port (41) is connected to the engine oil outlet (13), the second valve body oil port (42) is connected to the engine oil inlet (14), the first working oil port (43) is connected to the oil inlet of the auxiliary oil tank (8), the second working oil port (44) is connected to the oil outlet of the auxiliary oil tank (8), the third working oil port (45) is connected to the oil outlet of the main oil tank (5), and the fourth working oil port (46) is connected to the oil inlet of the main oil tank (5).

5. A large diesel vehicle winter fuel heating and thickening system according to claim 4, characterized in that, The electromagnetic coil (2) is sleeved on the pipeline connecting the oil outlet of the main oil tank (5) and the third working oil port (45). The electromagnetic coil (2) is electrically connected to the PLC control system. A temperature sensor (7) is also installed in the main oil tank. The temperature sensor (7) is electrically connected to the PLC control system.

6. A large diesel vehicle winter fuel heating and thickening system according to claim 3, characterized in that, The small circulation system also includes a temperature control valve (3), which is electrically connected to the PLC control system.

7. A large diesel vehicle winter fuel heating and thickening system according to claim 3, characterized in that, It also includes a time-delay relay, which is installed in the engine circuit.

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