CN113022298B - Fuel oil conversion valve of main and auxiliary fuel tanks for vehicle and conversion control method - Google Patents
Fuel oil conversion valve of main and auxiliary fuel tanks for vehicle and conversion control method Download PDFInfo
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- CN113022298B CN113022298B CN202110311051.6A CN202110311051A CN113022298B CN 113022298 B CN113022298 B CN 113022298B CN 202110311051 A CN202110311051 A CN 202110311051A CN 113022298 B CN113022298 B CN 113022298B
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- oil tank
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- tank
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 58
- 239000002828 fuel tank Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000295 fuel oil Substances 0.000 title claims description 3
- 239000000446 fuel Substances 0.000 claims abstract description 55
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 239000002283 diesel fuel Substances 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 431
- 239000010705 motor oil Substances 0.000 claims description 54
- 238000009434 installation Methods 0.000 claims description 53
- 239000000919 ceramic Substances 0.000 claims description 51
- 238000007789 sealing Methods 0.000 claims description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 17
- 230000003068 static effect Effects 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 6
- 230000000670 limiting effect Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 11
- 239000012535 impurity Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
- F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/05—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0041—Electrical or magnetic means for measuring valve parameters
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03118—Multiple tanks, i.e. two or more separate tanks
- B60K2015/03131—Systems for filling dual tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/0321—Fuel tanks characterised by special sensors, the mounting thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03256—Fuel tanks characterised by special valves, the mounting thereof
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention provides a fuel conversion valve of a main and auxiliary fuel tank for a vehicle and a conversion control method, wherein the lower end of a valve body of the conversion valve is provided with a main fuel tank inlet, an auxiliary fuel tank inlet, a fuel tank return opening and an auxiliary fuel tank return opening; two motors are sealed in the valve body, and a circuit control board is arranged in the valve body and controls the working state of the motors; the two motors respectively drive the four rotary valve core units through the central pinion and the gear transmission structure, so that the fuel conversion function of the main and auxiliary fuel tanks is realized. According to the invention, by reasonably arranging two motors on the valve body and driving four rotary valve core structures of the oil inlet channel and the oil return channel, a time delay function is added, and a manual switching device is added, so that the problem of difficult engine starting caused by winter oil mixing of diesel oil with different specifications is solved.
Description
Technical Field
The invention relates to a switching valve, in particular to a fuel switching valve of a main and auxiliary fuel tank for a vehicle and a switching control method.
Background
The main and auxiliary oil tank switching valve is used for controlling an oil way of the automobile, and when the automobile cannot be started by No. 0 diesel under the low-temperature condition, the oil way is required to be switched to a low-temperature-resistant oil tank through the main and auxiliary oil tank switching valve so as to ensure normal starting, running and cruising of the automobile. However, the existing main and auxiliary oil tank switching valve can only perform manual switching operation, and when the manual switching mechanism fails, the switching of oil paths cannot be performed, so that the normal starting, running and cruising of the vehicle under the low-temperature condition cannot be ensured.
The Chinese patent application number 2019222601704 discloses a fuel conversion valve of a main and auxiliary fuel tank for a vehicle, wherein the lower end of a valve body is provided with a main fuel tank oil inlet, an auxiliary fuel tank oil inlet, a fuel tank oil return port and an auxiliary fuel tank oil return port, an upper cover is fixedly connected to the valve body, the upper cover is provided with an engine oil inlet and an engine oil return port, and the inner ends of the main fuel tank oil inlet, the auxiliary fuel tank oil inlet, the main fuel tank oil return port and the auxiliary fuel tank oil return port are respectively provided with a rotary valve core unit; the valve body is fixed with a motor, a circuit control board is arranged in the valve body, and the circuit control board controls the working state of the motor; the motor synchronously drives the four rotary valve core units through the central pinion and the gear transmission structure, so that the fuel conversion function of the main and auxiliary fuel tanks is realized. According to the utility model, the rotary valve core unit is arranged, and the four rotary valve core units are driven by 1 motor to axially rotate, so that the reliability of oil circuit switching is realized; by arranging the rotary valve core unit, the minimum drift diameter is increased, the rated flow is increased, the faults of oil leakage and clamping stagnation caused by impurities in an oil way are solved, and the service life is prolonged; through a reasonable gear transmission structure, the four rotary valve core units are driven by 1 motor, the integral structure of the product is optimized, meanwhile, related gears can be plastic parts, the weight is reduced, and the reliability of the product is improved; on the other hand, the rotary valve core unit adopts a brand-new sealing structure of ceramic plates, and sealing is realized through the static and dynamic ceramic plates which are processed finely, so that the sealing performance is improved.
The inventors found in the course of implementing the present invention that:
The four rotary valve core structures are synchronously driven by one motor, and particularly when the engine is used in winter in alpine regions, the engine is difficult to start due to the fact that diesel oil of different specifications is mixed in winter; meanwhile, the internal structure of the existing valve has structural defects, so that the problem cannot be solved, and when impurities exist in an oil way, oil leakage and clamping stagnation faults are caused; and when such a switching valve fails, there is a lack of remedial action.
Disclosure of Invention
In order to overcome the defects of the existing fuel conversion valve of the main and auxiliary fuel tanks for the vehicle, the invention provides the fuel conversion valve of the main and auxiliary fuel tanks for the vehicle and the conversion method, by reasonably arranging a valve body, arranging two motors in the valve body, respectively driving four rotary valve core structures of an oil inlet path and an oil return path through the two motors, adding a delay function, thereby solving the problem of difficult starting of an engine caused by mixing oil in winter of diesel oil with different specifications, further improving the reliability of switching an oil path, solving the fault of oil leakage and clamping stagnation caused by impurities in the oil path, and adding a manual conversion device.
For this purpose, the technical scheme of the invention is as follows:
the utility model provides a vehicle main and auxiliary fuel tank fuel conversion valve, which comprises an upper cover and a valve body, one side of valve body lower extreme is equipped with main fuel tank oil inlet, auxiliary fuel tank oil inlet, the opposite side of valve body lower extreme is equipped with main fuel tank oil return opening, auxiliary fuel tank oil return opening, upper cover fixed connection is equipped with engine oil inlet, engine oil return opening on the valve body on the upper cover, main fuel tank oil inlet, auxiliary fuel tank oil inlet, main fuel tank oil return opening and auxiliary fuel tank oil return opening inner are equipped with a rotary valve core unit respectively, install the circuit control board in the valve body, the plug connector is drawn forth to the circuit control board, the plug connector is connected at the valve body surface, the operating condition of circuit control board control motor, its characterized in that: the structure of the valve body is as follows: the left side and the right side in the valve body are respectively provided with a rotary valve core unit installation cavity and a motor installation cavity which are separated by the middle, wherein one side is provided with a rotary valve core unit installation cavity at the inner end of a main oil tank oil inlet and a secondary oil tank oil inlet, the other side is provided with a rotary valve core unit installation cavity at the inner end of a main oil tank oil return port and a secondary oil tank oil return port, the middle motor installation cavity is provided with a front independent installation cavity and a rear independent installation cavity which are separated by each other, the top end of the motor installation cavity is provided with a closed upper end cover, and the bottom of the motor installation cavity extends out from the valve body and is fixed with a lower end cover by a screw; a circuit control board mounting cavity is further separated between the motor mounting cavity and the valve body, and a corresponding plug body mounting part is arranged on the valve body; a motor is respectively arranged in each independent installation cavity of the middle motor installation cavity, the motor is installed from the bottom of the independent installation cavity, a rotating shaft of the motor penetrates out of the upper end cover and is in running fit with the upper end cover, a central pinion is fixed on the rotating shaft, the motor is fixedly connected through a sealing gasket pressing plate arranged outside the upper end cover of the motor installation cavity by adopting a screw, a corresponding sealing gasket is arranged between the sealing gasket pressing plate and the upper end cover of the motor installation cavity, and corresponding screw installation holes are formed in the sealing gasket pressing plate, the upper end cover and the motor;
the rotary valve core unit mounting cavities at the left side and the right side in the valve body are respectively provided with a group of gear transmission structures through the positioning of the supporting sleeve, each group of gear transmission structures is correspondingly connected with a motor, each motor drives the corresponding two rotary valve core units through the central pinion and the gear transmission structures, and the connection or disconnection of an oil way is realized, so that the fuel conversion function of a main and auxiliary fuel tank is realized;
The rotating shaft of the motor is provided with an extending end extending upwards along the mounting part of the central pinion, the extending end is connected with a manual switching device mounting part, and the outer end of the manual switching device extending out of the surface of the upper cover is provided with a force application part of a manual wrench;
The main oil tank oil inlet of the switching valve is provided with a fuel flow meter and a fuel flow sensor, and the valve body of the switching valve is provided with an ambient temperature sensor;
The circuit control board is provided with a circuit control module, the circuit control module comprises an MCU singlechip, an LDO power module connected with the MCU singlechip, an input interface circuit, an ADC sampling circuit, an output interface circuit, a CAN bus and a grounding GND connecting line, wherein:
The LDO power supply module is connected with a pin of a power supply anode VCC plug-in interface; the input interface circuit is connected with a Hall position sensing module and is connected with a plug interface of a heater switch signal, a conversion signal and a display signal through a circuit; the ADC sampling circuit is connected with the fuel flow sensor and the ambient temperature sensor, and the fuel flow sensor and the ambient temperature sensor are connected with a power supply; the output interface circuit is connected with two motors, a main oil tank and auxiliary oil tank oil mass signal switching relay and a ground GND through circuits, the two motors are connected with a power supply pin, and the main oil tank and auxiliary oil tank oil mass signal switching relay is respectively connected with a main oil tank signal, an auxiliary oil tank signal and a plug interface of a fuel gauge signal through circuits;
The MCU singlechip obtains a heater switch state signal and a change-over switch state signal through an input interface circuit; the LDO is a linear power supply and is responsible for supplying power to the MCU; the MCU completes communication and data exchange with the whole vehicle BCM through a transceiver interface chip of the CAN, and provides necessary data support for system execution; through an ADC acquisition circuit, the system acquires the ambient temperature and the reading of a fuel flow meter of an engine oil inlet of the conversion valve through an ambient temperature sensor of the conversion valve; the output control is finished through the output interface circuit MCU, the positive and negative rotation of the two motors are respectively controlled, the switching valve is opened and closed, the switching of the oil level data of the main auxiliary oil tank is finished through the oil level signal switching relay of the auxiliary oil tank of the main oil tank, namely: when the auxiliary oil tank oil way works, the conversion valve conveys the auxiliary oil tank oil level data to the instrument panel, and when the main oil tank oil way works, the conversion valve conveys the main oil tank oil level data to the instrument panel; through the input interface circuit, the system can acquire the opening position of the valve body so as to complete integral control.
The technical scheme is further improved as follows: the manual switching device comprises an installation part connected with the extending end of the rotating shaft of the motor, a structure for limiting circumferential rotation is arranged between the installation part and the rotating shaft of the motor, the other end of the manual switching device penetrates out of the upper cover, a groove which is adaptive to the head part of the manual wrench is formed in the end part of the manual switching device, a force application part of the manual wrench is formed, a limit bulge is radially arranged on the periphery of the manual switching device, the manual switching device is fixed between the upper cover and the pressure plate through a pressure plate, the manual switching device is in running fit with the upper cover and the pressure plate, and sealing is realized through a gasket and a sealing ring which are arranged between the bottom of the limit bulge and the step surface of the upper cover; the manual switching device has the advantages of simple structure, easy realization, convenient use and low cost.
The technical scheme is further improved as follows: the rotary valve core unit comprises a positioning sleeve, a movable ceramic plate rotary head, a movable ceramic plate, a static ceramic plate, a rubber sealing gasket and a supporting spring, wherein the supporting spring, the rubber sealing gasket, the static ceramic plate, the movable ceramic plate and the movable ceramic plate rotary head are sequentially arranged in the positioning sleeve from bottom to top, and axial oil cavities are respectively formed in the static ceramic plate, the movable ceramic plate and the movable ceramic plate rotary head; the rubber sealing gasket plays a role of end face sealing, the supporting spring provides upward pressure for the end face sealing of the movable ceramic plate and the static ceramic plate, and the sealing surfaces of the static ceramic plate and the movable ceramic plate are mirror surfaces after being processed and ground; because the sealing mode of the static ceramic plate and the dynamic ceramic plate, the sealing surface can be a mirror surface after special processing, and the sealing surface has a self-cleaning function in the moving process of the dynamic ceramic plate, so that the ceramic plate has excellent impurity resistance and long service life.
The technical scheme is further improved as follows: the gear transmission structure is as follows: the upper end of each rotary valve core unit is provided with a pinion, the left big gear and the right big gear are oppositely arranged, the supporting sleeve positions the four pinions, the left big gear and the right big gear, the upper sector gear of the left big gear is meshed with the central pinion of one motor, and the upper sector gear of the right big gear is meshed with the central pinion of the other motor; the lower gear of the left large gear is meshed with the two pinion gears on the left side at the same time, and the lower gear of the right large gear is meshed with the two pinion gears on the right side at the same time. Therefore, two motors are respectively used for controlling two groups of rotary valve core units, the transmission structure with two motors in the middle and gears on two sides is reasonable in arrangement, the realization of the delay function of a main oil tank and an auxiliary oil tank is ensured from the aspect of hardware, and structural support is provided for solving the problem of difficult engine starting caused by the winter oil mixing of diesel oil with different specifications;
Another object of the present invention is to provide a switching control method of a fuel switching valve of a main and auxiliary fuel tank for a vehicle, characterized by comprising: in the using process of the fuel conversion valve of the main and auxiliary fuel tanks for the vehicle, the conversion state of the fuel of the main and auxiliary fuel tanks comprises:
the first state is the initial state, the auxiliary oil tank oil way is communicated with the engine oil way, and the main oil tank oil way is disconnected with the engine oil way;
The second state is that the auxiliary oil tank oil way is converted into a main oil tank oil way, the auxiliary oil tank returns oil in a delayed way, and the low-temperature resistant oil in the engine oil way flows back to the auxiliary oil tank according to the set delay time;
in the third state, after low-temperature-resistant oil in the engine oil way returns to the auxiliary oil tank in the finished state, the switching valve is switched to the main oil tank oil way to be completely communicated with the engine oil way, the auxiliary oil tank oil way is disconnected from the engine oil way, the whole vehicle runs through the main oil tank common diesel oil, and the vehicle runs normally;
The fourth state is that when the vehicle is in a stop state and the vehicle is in a running state, a control switch of a switching valve is pressed, the switching valve is switched from a main oil tank oil way to a secondary oil tank oil way, common diesel oil in an engine oil way flows back to the main oil tank, and the engine oil way is completely low-temperature resistant oil of the secondary oil tank;
The main oil tank is switched to the auxiliary oil tank, and after the oil return delay reaches the set time, the switching valve is completely switched to an auxiliary oil tank oil way and is restored to the initial state;
The specific conversion control process comprises the following steps:
After the VCC of the whole vehicle is electrified, the main vehicle control system starts to uninterruptedly scan the states of a control switch and a water heating switch of the switching valve, and automatically adjusts the switching of the switching valve according to the cooling water temperature of the vehicle and the oil level of a main and auxiliary oil tank obtained from a CAN bus;
When the vehicle engine works and the whole vehicle power supply is turned on, the ECU system captures a switching signal of water heating and turning on at first, the control switch of the conversion valve is detected to be in a closed state, at the moment, the system starts to time the water heating time, when the water heating time reaches a set value t and the water temperature of the engine does not reach a switched calibration value, the system starts to time a second step, the system is set to continue heating for 5 minutes or 10 minutes, when the water temperature of the engine reaches the switched calibration value, the system starts to automatically switch to a main oil tank at the moment, the system starts to detect the reading of the fuel flow meter, and when the oil inlet flow of the main oil tank is detected to reach the set value, the oil inlet is immediately switched, at the moment: the main oil tank oil inlet is communicated with the engine oil inlet, and the main oil tank oil return port is not communicated with the engine oil return port; the auxiliary oil tank oil inlet is not communicated with the engine oil inlet, and the auxiliary oil tank oil return port is communicated with the engine oil return port;
The time delay of switching the auxiliary oil tank to the main oil tank is set to 20-40 seconds, the time delay is up, the oil return way starts to switch, and the auxiliary oil tank is completely switched to the main oil tank at the moment, namely: the auxiliary oil tank oil return port is not communicated with the engine oil return port, and the main oil tank oil return port is communicated with the engine oil return port;
When the oil level of the main oil tank is lower than a set value in the working state of the main oil tank and read from the CAN main line, the control system automatically switches the state of the main oil tank to the state of the auxiliary oil tank, and the auxiliary oil tank is used for running;
When the engine is closed, the switching valve is required to be manually switched to the auxiliary oil tank state, the circuit control module of the switching valve controls the switching signal through identifying the switching valve, and the automatic function is shielded, and before the switching to the auxiliary oil tank state is completely switched, the delay time for switching the main oil tank to the auxiliary oil tank is set to be 110-130 seconds;
when the delay time is up, the oil return way starts to switch and is completely switched to the auxiliary oil tank;
when the system is in operation, a control switch of the switching valve is triggered, an automatic mode is closed, the executive auxiliary oil tank is switched to the main oil tank, and if the state needs to be switched to the auxiliary oil tank, the switching operation is needed to be realized;
after the whole vehicle power supply is turned off and the power is turned on again, the system executes the automatic mode again;
When the ambient temperature is more than or equal to 8 ℃, the vehicle engine starts to work, and after the whole vehicle power supply is turned on, the system is automatically switched to the main oil tank to work when the water heating switch is not started; and simultaneously monitoring the oil quantity of the main oil tank, and when the oil quantity of the main oil tank is lower than a set warning value, automatically switching the system into the auxiliary oil tank to work.
The beneficial effects of the invention are as follows:
1) According to the switching valve, two motors are designed and respectively arranged in independent closed spaces through reasonable layout of the valve body, so that the risk of igniting an oil way when a motor brush works (under the condition that the internal seal of the switching valve fails and oil leakage occurs), the delay function of a main oil tank and an auxiliary oil tank is realized, and the problem that the engine is difficult to start due to the fact that diesel oil of different specifications is mixed in winter is solved;
2) The switching valve detects relevant input signals of the CAN bus of the whole vehicle by arranging a control module of the switching valve, and automatically controls the switching of an oil way;
3) The oil quantity sensor is additionally arranged on the switching valve, so that whether the automatic switching function of the switching valve is normal or not can be judged;
4) The switching valve is additionally provided with a manual switching device, and can realize manual switching of oil ways on the premise of failure of the function of the switching valve.
Drawings
Fig. 1 is a front view of a diverter valve according to the present invention.
Fig. 2 is a top view of the diverter valve of the present invention.
Fig. 3 is a bottom view of the diverter valve of the present invention.
Fig. 4 is a C-C rotation diagram of fig. 2.
Fig. 5 is an exploded installation view of the switching valve according to the present invention.
Fig. 6 is a diagram showing the connection structure of the motor, the sun pinion, the gear transmission structure and the rotary valve core unit according to the present invention.
Fig. 7 is a partially installed view of the rotary valve core unit of the present invention.
Fig. 8 is a structural view of the rotary valve element unit of the present invention.
Fig. 9 is a diagram of the independent enclosure of the motor of the present invention.
Fig. 10 is a partial installation structure diagram of the manual switching device of the present invention.
Fig. 11 is a layout and definition of the circuit interface of fig. 3a according to the present invention.
Fig. 12 is a schematic diagram of the switch valve circuit control board system of the present invention.
Fig. 13 is a schematic diagram showing the initial state of the conversion of the fuel in the main and auxiliary tanks according to the present invention.
Fig. 14 is a schematic diagram of a second state of conversion of fuel in the main and auxiliary tanks according to the present invention.
Fig. 15 is a schematic diagram of a third state of conversion of the fuel in the main and auxiliary tanks according to the present invention.
Fig. 16 is a schematic diagram of a fourth state of conversion of the fuel in the main and auxiliary tanks according to the present invention.
Fig. 17 is a schematic diagram of a fifth state of conversion of the fuel in the main and auxiliary tanks according to the present invention.
Fig. 18 is a control logic diagram of the present invention operating in a complete vehicle system.
The figure shows: 1. a valve body; 2. an upper cover; 3. an engine oil return port; 4. an engine oil inlet; 5. an oil inlet of the auxiliary oil tank; 6. an oil return port of the auxiliary oil tank; 7. an oil inlet of the main oil tank; 8. an oil return port of the main oil tank; 9. a circuit control board; 10. a lower end cap; 11. a motor; 12. a center pinion; 13. a gasket pressure plate; 14. a manual switching device; 141. a limit protrusion; 15. a fuel flow meter; 16. a pressing plate; 17. a gasket; 18. a seal ring; 19. a positioning sleeve; 20. moving the ceramic wafer rotary head; 21. moving the ceramic plate; 22. static ceramic plate; 23. a rubber gasket; 24. a support spring; 25. a pinion gear; 261. a left large gear; 262. right large tooth 262;27. a support sleeve; 271. a support sleeve pressing plate; 28. a pipe joint; 29. a magnet; K. a plug body.
Detailed Description
The invention is further described below with reference to the drawings.
As shown in fig.1 to 11, a fuel conversion valve for a main and auxiliary fuel tanks for a vehicle comprises a valve body 1 and an upper cover 2, wherein one side of the lower end of the valve body is provided with a main fuel tank oil inlet 7 and an auxiliary fuel tank oil inlet 5, the other side of the lower end of the valve body is provided with a main fuel tank oil return port 8 and an auxiliary fuel tank oil return port 6, the upper cover is fixedly connected onto the valve body, the upper cover is provided with an engine oil inlet 4 and an engine oil return port 3, the inner ends of the main fuel tank oil inlet, the auxiliary fuel tank oil inlet, the main fuel tank oil return port and the auxiliary fuel tank oil return port are respectively provided with a rotary valve core unit, a circuit control board 9 is installed in the valve body, the circuit control board is led out of an inserting body, the inserting body is connected onto the surface of the valve body and provided with a sealing gasket, and the circuit control board controls the working state of a motor;
The structure of the valve body 1 is as follows: the left side and the right side in the valve body are respectively provided with a rotary valve core unit installation cavity and a motor installation cavity which are separated by the middle, wherein one side is provided with a main oil tank oil inlet 7 and a rotary valve core unit installation cavity at the inner end of a secondary oil tank oil inlet 5, the other side is provided with a main oil tank oil return port 8 and a rotary valve core unit installation cavity at the inner end of a secondary oil tank oil return port 6, the middle motor installation cavity is provided with a front independent installation cavity and a rear independent installation cavity which are separated by each other, the top end of the motor installation cavity is provided with a closed upper end cover, and the bottom of the motor installation cavity extends out from the valve body, is fixedly provided with a lower end cover 10 by a screw and is sealed by a sealing ring 101; a circuit control board mounting cavity is further separated between the motor mounting cavity and the valve body, and a corresponding plug body mounting part is arranged at the bottom of the valve body; through the structural layout, two independent motor mounting cavities are arranged in the valve body;
A motor 11 is respectively arranged in each independent installation cavity of the middle motor installation cavity, the motor is installed from the bottom of the independent installation cavity, a rotating shaft of the motor penetrates out of an upper end cover and is in running fit with the upper end cover, a central pinion 12 is fixed on the rotating shaft, the motor is fixedly connected through a sealing gasket pressing plate 13 arranged outside the upper end cover of the motor installation cavity by adopting a screw, a motor shaft sealing ring, a motor rotating shaft sealing ring and a screw sealing ring are arranged between the sealing gasket pressing plate and the upper end cover of the motor installation cavity, corresponding screw installation holes are respectively arranged on the sealing gasket pressing plate, the upper top cover and the motor, the motor 11 is arranged in a closed and independent space by adopting the sealing structure, and the risk of igniting an oil way when a motor brush works (under the condition that the internal sealing of a switching valve fails and oil leakage occurs) is avoided; the two motors are respectively controlled by the circuit control board, so that the functions of oil return delay of the main oil tank switching auxiliary oil tank and oil return delay of the auxiliary oil tank switching main oil tank are realized;
The rotary valve core unit mounting cavities at the left side and the right side in the valve body are respectively provided with a group of gear transmission structures through the positioning of a supporting sleeve 27 (the supporting sleeve is fixed in the valve body through a supporting sleeve pressing plate 271), each group of gear transmission structures is correspondingly connected with one motor, and each motor drives the corresponding two rotary valve core units through a central pinion and the gear transmission structures to realize the connection or disconnection of an oil way, so that the fuel conversion function of a main fuel tank and an auxiliary fuel tank is realized;
The rotating shaft of the motor 11 is provided with an extending end extending upwards along the mounting part of the central pinion, the extending end is connected with a manual switching device mounting part, and the outer end of the manual switching device 14 extending out of the surface of the upper cover is provided with a force application part of a manual wrench; by adding the manual switching device, the oil way can be manually switched on the premise that the function of the switching valve is invalid, and the situation that the vehicle cannot run on the premise that the function of the switching valve is invalid is avoided.
A fuel flow meter 15 and a fuel flow sensor are arranged at the position of a main fuel tank oil inlet of the conversion valve, and an environment temperature sensor is arranged on a valve body of the conversion valve; the fuel flow meter is arranged and used for providing the fuel flow of the oil inlet of the main oil tank and used as the basis for switching the oil inlet after the engine is started; the fuel flow sensor and the ambient temperature sensor are arranged, so that the system is convenient to collect corresponding signals and is used as a basis for output control, forward and reverse rotations of the two motors are controlled, and the switching valve is opened and closed.
As shown in fig. 10: in this embodiment, the manual switching device 14 includes an installation portion connected to the extending end of the motor shaft, a structure for limiting circumferential rotation is disposed between the rotation shaft and the motor shaft (for example, the extending end of the motor shaft is square, the installation portion corresponding to the manual switching device is a square groove, the rotation shaft is inserted into the square groove to realize circumferential limitation), the other end of the rotation shaft penetrates out of the upper cover, an inner hexagonal structure adapted to the head portion (inner hexagonal wrench) of the manual wrench is disposed at the end portion of the rotation shaft, a force applying portion of the manual wrench is formed, a limiting protrusion 141 is radially disposed at the outer periphery of the manual switching device, the manual switching device is fixed between the upper cover and the pressing plate through a pressing plate 16, the manual switching device is in running fit with the upper cover and the pressing plate, and is sealed through a PTFE gasket 17 and a star-shaped sealing ring 18 disposed between the bottom of the limiting protrusion and the step surface of the upper cover, and the PTFE gasket mainly plays a role in reducing friction force during rotation, and the star-shaped sealing ring mainly plays a role in preventing foreign matters from entering the switching valve. The manual switching device provided herein is simple in structure, easy to implement, and convenient to use, and those skilled in the art will appreciate that the manual switching device is not limited to such a structure, and other suitable structures in the prior art are equally applicable.
As shown in fig. 7 and 8: the rotary valve core unit comprises a positioning sleeve 19, a movable ceramic plate rotary head 20, a movable ceramic plate 21, a static ceramic plate 22, a rubber sealing gasket 23 and a supporting spring 24, wherein the supporting spring, the rubber sealing gasket, the static ceramic plate, the movable ceramic plate rotary head are sequentially arranged in the positioning sleeve from bottom to top, and axial oil cavities are respectively formed in the static ceramic plate, the movable ceramic plate and the movable ceramic plate rotary head; the rubber sealing gasket plays a role of end face sealing, the supporting spring provides upward pressure for the end face sealing of the movable ceramic plate and the static ceramic plate, and the sealing surfaces of the static ceramic plate and the movable ceramic plate are mirror surfaces after being processed and ground; because the sealing mode of the static ceramic plate and the dynamic ceramic plate, the sealing surface can be a mirror surface after special processing, and the sealing surface has a self-cleaning function in the moving process of the dynamic ceramic plate, so that the ceramic plate has excellent impurity resistance and long service life.
A gear transmission structure of the present invention will be described with reference to fig. 6 and 7: the upper end of each rotary valve core unit is provided with a pinion 25, a left big gear 261 and a right big gear 262 are oppositely arranged, a supporting sleeve 27 positions the four pinions, the left big gear and the right big gear, an upper layer sector gear of the left big gear 261 is meshed with a central pinion of one motor 11, an upper layer sector gear of the right big gear 262 is meshed with a central pinion of the other motor 11, and a magnet 29 is arranged on the upper layer sector gear; the lower gear of the left large gear is simultaneously meshed with the two pinion gears 25 on the left side, and the lower gear of the right large gear 262 is simultaneously meshed with the two pinion gears 25 on the right side; when the motor is electrified, the motor works, the rotating shaft of the motor drives the central pinion 12 to rotate, the central pinion 12 rotates to drive the large gear 26 to rotate, and the rotation of the large gear 26 simultaneously drives the corresponding two pinions 25 to rotate; the upper part shaft of the movable ceramic wafer rotating head 20 is fixed with the pinion gear 25, and the lower part of the movable ceramic wafer rotating head is clamped and fixed with the movable ceramic wafer 21, namely, the pinion gear 25 rotates to drive the movable ceramic wafer 21 to rotate so as to control the switching valve to be opened and closed; the rotating angle is controlled by a magnet 29 on the large gear 26 and a Hall position sensing module on the circuit control board 9, the magnet 29 is fixed on the large gear 26, the magnet 29 rotates along with the large gear 26, the Hall position sensing module is fixed, when the position of the magnet 29 changes (rotates), the induction current generated by the Hall position sensing module changes, the rotating angle of the large gear 26 is designed to be a fixed value, namely, the change value of the final induction current is a fixed value, and whether the large gear 26 rotates in place is judged by the fixed value. Therefore, two motors are respectively used for controlling two groups of rotary valve core units, the transmission structure with two motors in the middle and gears on two sides is reasonable in arrangement, the realization of the delay function of a main oil tank and an auxiliary oil tank is ensured from the aspect of hardware, and structural support is provided for solving the problem of difficult engine starting caused by the winter oil mixing of diesel oil with different specifications;
As shown in fig. 12: the circuit control board is provided with a circuit control module, the circuit control module comprises an MCU singlechip, an LDO power module, an input interface circuit, an ADC sampling circuit, an output interface circuit, a CAN bus and a grounding GND wire, and the circuit control module is provided with a switching valve and used for detecting relevant input signals of the CAN bus of the whole automobile, so that the switching of an automatic control oil way is realized; wherein:
The LDO power supply module is connected with a pin of a power supply anode VCC plug-in interface; the input interface circuit is connected with a Hall position sensing module and is connected with plug interface pins of a heater switch signal, a conversion signal and a display signal through lines; the ADC sampling circuit is connected with the fuel flow sensor and the ambient temperature sensor, and the fuel flow sensor and the ambient temperature sensor are connected with a power supply; the output interface circuit is connected with two motors (namely a first motor and a second motor in fig. 12) through a circuit, a main oil tank and auxiliary oil tank oil quantity signal switching relay and a ground GND, the two motors are connected with a power pin, and the main oil tank and auxiliary oil tank oil quantity signal switching relay is respectively connected with a main oil tank signal, an auxiliary oil tank signal and a plug interface pin of a fuel gauge signal through a circuit; the MCU singlechip obtains a heater switch state signal and a change-over switch state signal through an input interface circuit; the LDO is a linear power supply and is responsible for supplying power to the MCU, the power supply mode of plus or minus 60V is supported, and the output is 5V; the MCU completes communication and data exchange with the whole vehicle BCM through a transceiver interface chip of the CAN, and provides necessary data support for system execution; through an ADC acquisition circuit, the system acquires the ambient temperature and the reading of a fuel flow meter of an oil inlet of a main oil tank of the conversion valve through an ambient temperature sensor of the conversion valve; the output control is finished through the output interface circuit MCU, the positive and negative rotation of the two motors are respectively controlled, the switching valve is opened and closed, the switching of the oil level data of the main auxiliary oil tank is finished through the oil level signal switching relay of the auxiliary oil tank of the main oil tank, namely: when the auxiliary oil tank oil way works, the conversion valve conveys the auxiliary oil tank oil level data to the instrument panel, and when the main oil tank oil way works, the conversion valve conveys the auxiliary oil tank oil level data to the instrument panel; through the input interface circuit, the system can acquire the opening position of the valve body so as to complete integral control.
Further in connection with fig. 13 to 18: a conversion control method of a fuel conversion valve of a main and auxiliary fuel tank for a vehicle, wherein in the use process of the fuel conversion valve of the main and auxiliary fuel tank for the vehicle, the conversion state of the fuel of the main and auxiliary fuel tank comprises the following steps:
The first state is the initial state, the auxiliary oil tank oil way is communicated with the engine oil way, and the main oil tank oil way is disconnected with the engine oil way; (shown in FIG. 13)
The second state is that the auxiliary oil tank oil way is converted into a main oil tank oil way, the oil return of the auxiliary oil tank is delayed, and the low-temperature resistant oil in the engine oil way flows back to the auxiliary oil tank according to the set delay time (the delay time can be adjusted according to the requirement of a customer); (shown in FIG. 14)
In the third state, after low-temperature-resistant oil in the engine oil way returns to the auxiliary oil tank in the finished state, the switching valve is switched to the main oil tank oil way to be completely communicated with the engine oil way, the auxiliary oil tank oil way is disconnected from the engine oil way, the whole vehicle runs through the main oil tank common diesel oil, and the vehicle runs normally; (shown in FIG. 15)
The fourth state is that when the vehicle is in a stop state and the vehicle is in a running state, a control switch of a switching valve is pressed, the switching valve is switched from a main oil tank oil way to a secondary oil tank oil way, common diesel oil in an engine oil way flows back to the main oil tank, and the engine oil way is completely low-temperature resistant oil of the secondary oil tank; (shown in FIG. 16)
The main oil tank is switched to the auxiliary oil tank, and after the oil return delay reaches the set time, the switching valve is completely switched to an auxiliary oil tank oil way and is restored to the initial state; (shown in FIG. 17)
Referring to fig. 18, the specific conversion control process is:
After the VCC of the whole vehicle is electrified (ACC gear is electrified), the control system of the whole vehicle starts to uninterruptedly scan the control switch of the change-over valve and change the state of the heating state, and automatically adjusts the switching of the change-over valve according to the cooling water temperature of the vehicle and the oil level of the main and auxiliary oil tanks obtained from the CAN bus;
When the vehicle engine works and the whole vehicle power supply is turned on, the system captures a switching signal of water heating and turning on at first, the change-over valve control switch is detected to be in a closed state, the system starts to count the water heating time, when the water heating time reaches a set value t (t is a time value set by the whole vehicle ECU and is controlled by the ECU) and the water temperature of the engine does not reach a switched calibration value, the system starts to count the second step, the system continues to heat for 5 minutes, when the water temperature of the engine reaches the switched calibration value, the system starts to automatically switch to a main oil tank at the moment, the system starts to detect the reading of the fuel flow meter, when the oil inlet flow of the main oil tank is detected to reach the set value, the oil inlet is immediately switched, and at the moment: the main oil tank oil inlet is communicated with the engine oil inlet, and the main oil tank oil return port is not communicated with the engine oil return port; the auxiliary oil tank oil inlet is not communicated with the engine oil inlet, and the auxiliary oil tank oil return port is communicated with the engine oil return port; (the state shown in FIG. 14)
The delay time (set according to different vehicle types) for switching the oil return of the auxiliary oil tank to the oil return of the main oil tank is set to 20-40 seconds, the delay time is up, the oil return way starts to switch, and the auxiliary oil tank is completely switched to the main oil tank at the moment, namely: the auxiliary oil tank oil return port is not communicated with the engine oil return port, and the main oil tank oil return port is communicated with the engine oil return port; (the state shown in FIG. 15)
When the oil level of the main oil tank is lower than a set value in the working state of the main oil tank and read from the CAN main line, the control system automatically switches the state of the main oil tank to the state of the auxiliary oil tank, and the auxiliary oil tank is used for running;
When the engine is closed (flameout), the control switch of the switching valve is manually pressed and switched to the auxiliary oil tank state, the circuit control module of the switching valve recognizes the control switch signal of the switching valve, and simultaneously shields the automatic function, and before the main oil tank is completely switched to the auxiliary oil tank state, the delay time (set according to different vehicle types) for switching the oil return of the main oil tank to the auxiliary oil tank is set to be 110-130 seconds;
when the delay time is up, switching is started, and the auxiliary oil tank is completely switched; (the state shown in FIG. 17)
When the system is in operation, a control switch of the switching valve is triggered, an automatic mode is closed, the executive auxiliary oil tank is switched to the main oil tank, and if the state needs to be switched to the auxiliary oil tank, the switching operation is needed to be realized;
after the whole vehicle power supply is turned off and the power is turned on again, the system executes the automatic mode again;
When the environment temperature is at normal or higher temperature (more than or equal to 8 ℃), the system is automatically switched to the main oil tank to work when the water heating switch is not started after the vehicle engine starts to work and the whole vehicle power supply is turned on; and simultaneously monitoring the oil quantity of the main oil tank, and when the oil quantity of the main oil tank is lower than a set warning value, automatically switching the system into the auxiliary oil tank to work.
In order to facilitate observation, the control switch of the auxiliary oil tank switching valve of the main oil tank can be set to be of a button self-reset structure, the colors of the flashing lamps are changed corresponding to the colors of the flashing lamps when the oil tank is used, the flashing lamps are switched automatically when the oil tank is switched automatically, and the lines of the main oil tank and the auxiliary oil tank are switched correspondingly.
Specifically:
According to different vehicle types, the delay time for switching the auxiliary oil tank to the main oil tank is set to 20-40 seconds, the optimal setting value is 30 seconds generally, the requirements of most vehicle types can be met, and the delay time is set to 20 seconds or 40 seconds for special vehicle types;
according to different vehicle types, the delay time for switching the main oil tank oil return to the auxiliary oil tank oil return is set to be 110-130 seconds, the requirements of most vehicle types can be met by optimizing the set value to be 120 seconds, and the delay time is set to be 110 seconds or 130 seconds for special vehicle types.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (6)
1. The utility model provides a vehicle main bellow oil tank fuel change-over valve, which comprises an upper cover and a valve body, one side of valve body lower extreme is equipped with main oil tank oil inlet, bellow oil inlet, the opposite side of valve body lower extreme is equipped with main oil tank oil return opening, bellow oil return opening, upper cover fixed connection is equipped with engine oil inlet, engine oil return opening above the valve body on the upper cover, main oil tank oil inlet, bellow oil inlet, main oil tank oil return opening and bellow oil return opening inner are equipped with a rotary valve core unit respectively, install the circuit control board in the valve body, the plug connector is drawn forth to the circuit control board, the plug connector is connected at the valve body surface, the operating condition of circuit control board control motor, its characterized in that: the structure of the valve body is as follows: the left side and the right side in the valve body are respectively provided with a rotary valve core unit installation cavity and a motor installation cavity which are separated by the middle, wherein one side is provided with a rotary valve core unit installation cavity at the inner end of a main oil tank oil inlet and a secondary oil tank oil inlet, the other side is provided with a rotary valve core unit installation cavity at the inner end of a main oil tank oil return port and a secondary oil tank oil return port, the middle motor installation cavity is provided with a front independent installation cavity and a rear independent installation cavity which are separated by each other, the top end of the motor installation cavity is provided with a closed upper end cover, and the bottom of the motor installation cavity extends out from the valve body and is fixed with a lower end cover by a screw; a circuit control board mounting cavity is further separated between the motor mounting cavity and the valve body, and a corresponding plug body mounting part is arranged on the valve body;
A motor is respectively arranged in each independent installation cavity of the middle motor installation cavity, the motor is installed from the bottom of the independent installation cavity, a rotating shaft of the motor penetrates out of the upper end cover and is in running fit with the upper end cover, a central pinion is fixed on the rotating shaft, the motor is fixedly connected through a sealing gasket pressing plate arranged outside the upper end cover of the motor installation cavity by adopting a screw, a sealing gasket is arranged between the sealing gasket pressing plate and the upper end cover of the motor installation cavity, and corresponding screw installation holes are formed in the sealing gasket pressing plate, the upper end cover and the motor;
the rotary valve core unit mounting cavities at the left side and the right side in the valve body are respectively provided with a group of gear transmission structures through the positioning of the supporting sleeve, each group of gear transmission structures is correspondingly connected with a motor, each motor drives the corresponding two rotary valve core units through the central pinion and the gear transmission structures, and the connection or disconnection of an oil way is realized, so that the fuel conversion function of a main and auxiliary fuel tank is realized;
The rotating shaft of the motor is provided with an extending end extending upwards along the mounting part of the central pinion, the extending end is connected with a manual switching device mounting part, and the outer end of the manual switching device extending out of the surface of the upper cover is provided with a force application part of a manual wrench;
The main oil tank oil inlet of the switching valve is provided with a fuel flow meter and a fuel flow sensor, and the valve body of the switching valve is provided with an ambient temperature sensor;
The circuit control board is provided with a circuit control module, the circuit control module comprises an MCU singlechip, an LDO power module connected with the MCU singlechip, an input interface circuit, an ADC sampling circuit, an output interface circuit, a CAN bus and a grounding GND connecting line, wherein:
The LDO power supply module is connected with a pin of a power supply anode VCC plug-in interface; the input interface circuit is connected with a Hall position sensing module and is connected with a plug interface of a heater switch signal, a conversion signal and a display signal through a circuit; the ADC sampling circuit is connected with the fuel flow sensor and the ambient temperature sensor, and the fuel flow sensor and the ambient temperature sensor are connected with a power supply; the output interface circuit is connected with two motors, a main oil tank and auxiliary oil tank oil mass signal switching relay and a ground GND through circuits, the two motors are connected with a power supply pin, and the main oil tank and auxiliary oil tank oil mass signal switching relay is respectively connected with a main oil tank signal, an auxiliary oil tank signal and a plug interface of a fuel gauge signal through circuits;
The MCU singlechip obtains a heater switch state signal and a change-over switch state signal through an input interface circuit; the LDO is a linear power supply and is responsible for supplying power to the MCU; the MCU completes communication and data exchange with the whole vehicle BCM through a transceiver interface chip of the CAN, and provides necessary data support for system execution; through an ADC acquisition circuit, the system acquires the ambient temperature and the reading of a fuel flow meter of an engine oil inlet of the conversion valve through an ambient temperature sensor of the conversion valve; the output control is finished through the output interface circuit MCU, the positive and negative rotation of the two motors are respectively controlled, the switching valve is opened and closed, the switching of the oil level data of the main auxiliary oil tank is finished through the oil level signal switching relay of the auxiliary oil tank of the main oil tank, namely: when the auxiliary oil tank oil way works, the conversion valve conveys the auxiliary oil tank oil level data to the instrument panel, and when the main oil tank oil way works, the conversion valve conveys the main oil tank oil level data to the instrument panel; through the input interface circuit, the system can acquire the opening position of the valve body so as to complete integral control.
2. The vehicular main and auxiliary tank fuel conversion valve according to claim 1, wherein: the manual switching device comprises an installation part connected with the extending end of the motor rotating shaft, a structure for limiting circumferential rotation is arranged between the installation part and the rotating shaft of the motor, the other end of the manual switching device penetrates out of the upper cover, a groove matched with the head of the manual wrench is formed in the end part of the manual switching device, a force application part of the manual wrench is formed, a limit bulge is radially arranged on the periphery of the manual switching device, the manual switching device is fixed between the upper cover and the pressure plate through the pressure plate, the manual switching device is in running fit with the upper cover and the pressure plate, and sealing is realized through a gasket and a sealing ring which are arranged between the bottom of the limit bulge and the step surface of the upper cover.
3. A vehicular main and auxiliary tank fuel conversion valve according to claim 1 or 2, characterized in that: the rotary valve core unit comprises a positioning sleeve, a movable ceramic plate rotary head, a movable ceramic plate, a static ceramic plate, a rubber sealing pad and a supporting spring, wherein the supporting spring, the rubber sealing pad, the static ceramic plate, the movable ceramic plate and the movable ceramic plate rotary head are sequentially arranged in the positioning sleeve from bottom to top, and axial oil cavities are respectively formed in the static ceramic plate, the movable ceramic plate and the movable ceramic plate rotary head.
4. A vehicular main and auxiliary tank fuel conversion valve according to claim 1 or 2, characterized in that: the gear transmission structure is as follows: the upper end of each rotary valve core unit is provided with a pinion, the left big gear and the right big gear are oppositely arranged, the supporting sleeve positions the four pinions, the left big gear and the right big gear, the upper sector gear of the left big gear is meshed with the central pinion of one motor, and the upper sector gear of the right big gear is meshed with the central pinion of the other motor; the lower gear of the left large gear is meshed with the two pinion gears on the left side at the same time, and the lower gear of the right large gear is meshed with the two pinion gears on the right side at the same time.
5. A vehicular main and auxiliary tank fuel switching valve according to claim 3, wherein: the gear transmission structure is as follows: the upper end of each rotary valve core unit is provided with a pinion, the left big gear and the right big gear are oppositely arranged, the supporting sleeve positions the four pinions, the left big gear and the right big gear, the upper sector gear of the left big gear is meshed with the central pinion of one motor, and the upper sector gear of the right big gear is meshed with the central pinion of the other motor; the lower gear of the left large gear is meshed with the two pinion gears on the left side at the same time, and the lower gear of the right large gear is meshed with the two pinion gears on the right side at the same time.
6. A conversion control method of a fuel conversion valve of a main and auxiliary fuel tank for a vehicle is characterized by comprising the following steps of: comprising the fuel conversion valve for a main and auxiliary fuel tank for a vehicle according to any one of claims 1 to 5,
In the use process, the conversion state of the fuel oil of the main and auxiliary fuel tanks comprises:
the first state is the initial state, the auxiliary oil tank oil way is communicated with the engine oil way, and the main oil tank oil way is disconnected with the engine oil way;
The second state is that the auxiliary oil tank oil way is converted into a main oil tank oil way, the auxiliary oil tank returns oil in a delayed way, and the low-temperature resistant oil in the engine oil way flows back to the auxiliary oil tank according to the set delay time;
in the third state, after low-temperature-resistant oil in the engine oil way returns to the auxiliary oil tank in the finished state, the switching valve is switched to the main oil tank oil way to be completely communicated with the engine oil way, the auxiliary oil tank oil way is disconnected from the engine oil way, the whole vehicle runs through the main oil tank common diesel oil, and the vehicle runs normally;
The fourth state is that when the vehicle is in a stop state and the vehicle is in a running state, a control switch of a switching valve is pressed, the switching valve is switched from a main oil tank oil way to a secondary oil tank oil way, common diesel oil in an engine oil way flows back to the main oil tank, and the engine oil way is completely low-temperature resistant oil of the secondary oil tank;
The main oil tank is switched to the auxiliary oil tank, and after the oil return delay reaches the set time, the switching valve is completely switched to an auxiliary oil tank oil way and is restored to the initial state;
The specific conversion control process comprises the following steps:
After the VCC of the whole vehicle is electrified, the main vehicle control system starts to uninterruptedly scan the states of a control switch and a water heating switch of the switching valve, and automatically adjusts the switching of the switching valve according to the cooling water temperature of the vehicle and the oil level of a main and auxiliary oil tank obtained from a CAN bus;
when the vehicle engine works and the whole vehicle power supply is turned on, the system captures a switching signal of water heating and turning on at first, the change-over valve control switch is detected to be in a closed state, at the moment, the system starts to time the water heating time, when the water heating time reaches a set value t and the water temperature of the engine does not reach a switched calibration value, the system starts to time a second step, the system sets to continue heating for 5 minutes or 10 minutes, when the water temperature of the engine reaches the switched calibration value, the system starts to automatically switch to a main oil tank, the system starts to detect the reading of the fuel flow meter, when the oil inlet flow of the main oil tank reaches the set value, the oil inlet is immediately switched, at the moment: the main oil tank oil inlet is communicated with the engine oil inlet, and the main oil tank oil return port is not communicated with the engine oil return port; the auxiliary oil tank oil inlet is not communicated with the engine oil inlet, and the auxiliary oil tank oil return port is communicated with the engine oil return port;
The time delay of switching the auxiliary oil tank to the main oil tank is set to 20-40 seconds, the time delay is up, the oil return way starts to switch, and the auxiliary oil tank is completely switched to the main oil tank at the moment, namely: the auxiliary oil tank oil return port is not communicated with the engine oil return port, and the main oil tank oil return port is communicated with the engine oil return port;
When the oil level of the main oil tank is lower than a set value in the working state of the main oil tank and read from the CAN main line, the control system automatically switches the state of the main oil tank to the state of the auxiliary oil tank, and the auxiliary oil tank is used for running;
When the engine is closed, the switching valve is required to be manually switched to the auxiliary oil tank state, the circuit control module of the switching valve controls the switching signal through identifying the switching valve, and the automatic function is shielded, and before the switching to the auxiliary oil tank state is completely switched, the delay time for switching the main oil tank to the auxiliary oil tank is set to be 110-130 seconds;
the oil return delay time of the main oil tank is up, and the main oil tank is completely switched to the auxiliary oil tank;
when the system is in operation, a control switch of the switching valve is triggered, an automatic mode is closed, the executive auxiliary oil tank is switched to the main oil tank, and if the state needs to be switched to the auxiliary oil tank, the switching operation is needed to be realized;
after the whole vehicle power supply is turned off and the power is turned on again, the system executes the automatic mode again;
When the ambient temperature is more than or equal to 8 ℃, the vehicle engine starts to work, and after the whole vehicle power supply is turned on, the system is automatically switched to the main oil tank to work when the water heating switch is not started; and simultaneously monitoring the oil quantity of the main oil tank, and when the oil quantity of the main oil tank is lower than a set warning value, automatically switching the system into the auxiliary oil tank to work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110311051.6A CN113022298B (en) | 2021-03-24 | 2021-03-24 | Fuel oil conversion valve of main and auxiliary fuel tanks for vehicle and conversion control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110311051.6A CN113022298B (en) | 2021-03-24 | 2021-03-24 | Fuel oil conversion valve of main and auxiliary fuel tanks for vehicle and conversion control method |
Publications (2)
| Publication Number | Publication Date |
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| CN113022298A CN113022298A (en) | 2021-06-25 |
| CN113022298B true CN113022298B (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110311051.6A Active CN113022298B (en) | 2021-03-24 | 2021-03-24 | Fuel oil conversion valve of main and auxiliary fuel tanks for vehicle and conversion control method |
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| CN113586297B (en) * | 2021-07-30 | 2024-04-12 | 中国重汽集团济南动力有限公司 | Fuel electronic reversing valve switching method and device |
| CN113685277A (en) * | 2021-08-25 | 2021-11-23 | 北京福田戴姆勒汽车有限公司 | Fuel conversion valve of vehicle and vehicle |
| CN114537130B (en) * | 2022-02-25 | 2023-08-22 | 三一专用汽车有限责任公司 | Dual-oil-tank switching control method, controller, system and vehicle |
| CN115163362A (en) * | 2022-06-24 | 2022-10-11 | 一汽解放汽车有限公司 | Fuel oil conversion electromagnetic valve and fuel oil filling system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917707A (en) * | 2017-04-22 | 2017-07-04 | 宜昌市车的技术有限公司 | A kind of automotive oil tank switching valve with time delay oil return function and operating method |
| CN109519584A (en) * | 2018-09-12 | 2019-03-26 | 太重集团榆次液压工业(济南)有限公司 | Using the electronic major-minor oil tank changeover valve and application method of linear stepping motor |
| CN110822131A (en) * | 2019-12-17 | 2020-02-21 | 湖北中生汽车电器有限公司 | Fuel oil change-over valve for main and auxiliary fuel tanks of vehicle |
| CN110848051A (en) * | 2019-12-04 | 2020-02-28 | 东风商用车有限公司 | Split type electronic time-delay control fuel heating system |
| CN111305986A (en) * | 2020-04-07 | 2020-06-19 | 瑞立集团瑞安汽车零部件有限公司 | Double-motor delay oil return conversion valve |
| CN210977715U (en) * | 2019-11-21 | 2020-07-10 | 鲁东大学 | Vehicle oil tank control system |
| CN212737745U (en) * | 2020-07-16 | 2021-03-19 | 宜昌市车的技术有限公司 | Rack structure automobile double-oil-tank oil-way mechanical switch with time-delay switching function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9751396B2 (en) * | 2015-02-24 | 2017-09-05 | Ford Global Technologies, Llc | Fuel tank pressure sensor rationality for a hybrid vehicle during refueling |
-
2021
- 2021-03-24 CN CN202110311051.6A patent/CN113022298B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917707A (en) * | 2017-04-22 | 2017-07-04 | 宜昌市车的技术有限公司 | A kind of automotive oil tank switching valve with time delay oil return function and operating method |
| CN109519584A (en) * | 2018-09-12 | 2019-03-26 | 太重集团榆次液压工业(济南)有限公司 | Using the electronic major-minor oil tank changeover valve and application method of linear stepping motor |
| CN210977715U (en) * | 2019-11-21 | 2020-07-10 | 鲁东大学 | Vehicle oil tank control system |
| CN110848051A (en) * | 2019-12-04 | 2020-02-28 | 东风商用车有限公司 | Split type electronic time-delay control fuel heating system |
| CN110822131A (en) * | 2019-12-17 | 2020-02-21 | 湖北中生汽车电器有限公司 | Fuel oil change-over valve for main and auxiliary fuel tanks of vehicle |
| CN111305986A (en) * | 2020-04-07 | 2020-06-19 | 瑞立集团瑞安汽车零部件有限公司 | Double-motor delay oil return conversion valve |
| CN212737745U (en) * | 2020-07-16 | 2021-03-19 | 宜昌市车的技术有限公司 | Rack structure automobile double-oil-tank oil-way mechanical switch with time-delay switching function |
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