CN112211763A - Fuel filter, fuel system and control method of fuel system - Google Patents
Fuel filter, fuel system and control method of fuel system Download PDFInfo
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- CN112211763A CN112211763A CN202010918067.9A CN202010918067A CN112211763A CN 112211763 A CN112211763 A CN 112211763A CN 202010918067 A CN202010918067 A CN 202010918067A CN 112211763 A CN112211763 A CN 112211763A
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- fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention belongs to the technical field of engines, and provides a fuel filter. The invention also provides a fuel system and a control method of the fuel system, the control method of the fuel system controls the number of the filter elements through the ECU, a single filter element participates in the work during the starting, the exhaust volume of the whole low-pressure oil way is reduced, the corresponding exhaust time is less, the harsh requirement on the low-speed capability of the oil delivery pump is less, the starting time of the engine is reduced, and the starting performance of the engine is improved. When the engine works under the load, the number of the filter elements participating in the work is controlled according to the real-time working condition of the engine, the successive working state of the filter elements is realized, the working potential of the system is improved to a greater extent, and the filter elements are combined with an alarm device to realize more accurate maintenance judgment. When the filter element needs maintenance, the filter element can be replaced without stopping.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a fuel filter. The invention also relates to a fuel system and a control method of the fuel system.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
In the prior art, each filter element participates in the filtration during the normal operation of the fuel filter; the engine can not follow the working condition change of the engine, particularly when the engine is in low speed and started, the power of the engine is small, the flow of the oil transfer pump is small, the oil filling and exhausting time is too long due to the fact that the fuel filter is too large in size, and the problems that the rail pressure of the engine is established slowly and the vehicle is difficult to start are caused. Moreover, the conventional engine generally covers a plurality of power sections in one configuration, or one filter assembly is used in a plurality of engine configurations, and the filter often has a redundant phenomenon and cannot be intelligently controlled.
Disclosure of Invention
The invention aims to at least solve the problem that the working quantity of filter elements of a fuel filter cannot be intelligently controlled according to the working condition of an engine in the prior art, and the aim is realized by the following technical scheme:
the invention provides a fuel filter in a first aspect, which comprises an electromagnetic valve and a plurality of filter elements connected in parallel, wherein the filter elements are provided with oil inlets, and the electromagnetic valve is used for controlling the opening or closing of the oil inlets of the filter elements.
The fuel filter provided by the invention comprises a plurality of filter elements which are connected in parallel, an electromagnetic valve is arranged to control the opening or closing of the oil inlet of the filter elements, the electromagnetic valve can be in various forms, such as an electric reversing valve, and the opening and closing of the oil inlet are controlled by rotating the valve core through the electric reversing valve by butting a plurality of output ports of the electric reversing valve and the oil inlets of a plurality of valve cores one by one.
A second aspect of the invention provides a fuel system comprising:
an oil tank;
a fuel transfer pump for pumping fuel from a fuel tank;
ECU；
according to the fuel filter provided by the first aspect of the invention, the inlet of the fuel filter is communicated with the fuel tank, the outlet of the fuel filter is communicated with the fuel delivery pump, and the solenoid valve is electrically connected with the ECU;
a pressure sensor electrically connected to the ECU, the pressure sensor for monitoring a pressure at a fuel outlet of the fuel filter.
According to the fuel oil system provided by the second aspect of the invention, the electromagnetic valve is controlled through the ECU, so that the opening and closing of the oil inlets of the plurality of filter elements are controlled, the number of the filter elements participating in the work of the fuel oil filter is related to the working condition of the engine, when the engine idles, a single filter element participates in the work, the exhaust time is reduced, and the rail pressure is accelerated to be established; after the engine is successfully started, judging whether the fuel system is abnormal, if so, starting the working state of the multi-stage filter element to realize the fault redundancy of the filter element; when the engine is in a load working condition, the ECU calculates the oil quantity required by the engine in real time and judges the oil quantity, and selects a proper number of filter elements to participate in the work according to the real-time working condition of the engine, so that the efficiency is improved, and the redundancy is avoided.
In some embodiments of the present invention, the solenoid valve is an electrically operated directional valve including an input port and a plurality of output ports, the plurality of output ports being in communication with the plurality of valve spools, the input port being selectively in communication with at least one of the output ports, and the input port being in communication with the tank.
In some embodiments of the invention, the plurality of outlets includes a first outlet, a second outlet, and a third outlet, and the plurality of cartridges includes a first cartridge in communication with the first outlet, a second cartridge in communication with the second outlet, and a third cartridge in communication with the third outlet.
In some embodiments of the invention, the fuel system further comprises a rail pressure sensor for monitoring the pressure of the common rail pipe and a flow metering unit for monitoring the oil output of the oil tank, and the rail pressure sensor and the flow metering unit are both electrically connected with the ECU.
In some embodiments of the present invention, the fuel system further includes a fuel injection pump, the fuel tank, the fuel delivery pump and the fuel injection pump are sequentially connected in series, and one fuel filter is disposed between the fuel tank and the fuel delivery pump and between the fuel delivery pump and the fuel injection pump.
A third aspect of the invention proposes a control method of a fuel system, implemented according to the fuel system proposed by the second aspect of the invention, comprising the steps of:
judging whether the starting of the engine is finished or not;
according to the result that the starting of the generator is not finished, controlling the electromagnetic valve to enable the oil inlet of one filter element of the fuel filter to be opened;
judging whether the engine is in an abnormal state or not according to the result of the completion of the starting of the generator;
controlling the electromagnetic valve to open the oil inlets of all the filter elements of the fuel filter according to the result that the engine is in an abnormal state;
determining the filter element which needs to participate in working according to the oil demand of the engine and the result that the engine is not in an abnormal state;
and controlling the electromagnetic valve to enable the oil inlet of the filter element which is judged to be required to participate in the work in the fuel filter to be opened.
The control method of the fuel system provided by the third aspect of the invention controls the number of the filter elements through the ECU, and the single filter element participates in the work during the starting, so that the exhaust volume of the whole low-pressure oil way is reduced, the corresponding exhaust time is short, the harsh requirement on the low-speed capability of the oil delivery pump is low, the starting time of the engine is reduced, and the starting performance of the engine is improved. When the engine works under the load, the number of the filter elements participating in the work is controlled according to the real-time working condition of the engine, the successive working state of the filter elements is realized, the working potential of the system is improved to a greater extent, and the filter elements are combined with an alarm device to realize more accurate maintenance judgment. When the filter element needs maintenance, the filter element can be replaced without stopping.
In some embodiments of the present invention, the control method of the fuel system further comprises the steps of:
judging the relation between the oil demand of the engine and a first preset oil threshold according to the result that the engine is not in an abnormal state;
according to the result that the required oil quantity of the engine is larger than the first preset oil quantity threshold value, controlling the electromagnetic valve to enable the oil inlets of all the filter elements in the fuel filter to be opened;
receiving a pressure signal of the pressure sensor according to a result that the oil demand of the engine is not greater than the first preset oil quantity threshold;
judging the relation between the pressure signal and a preset pressure threshold value;
controlling the electromagnetic valve to open the oil inlets of two filter elements in the fuel filter according to the result that the pressure signal is smaller than a preset pressure threshold value;
re-judging the relation between the pressure signal and a preset pressure threshold value;
and controlling the electromagnetic valve to open the oil inlets of all the filter elements in the fuel filter according to the result that the pressure signal is smaller than a preset pressure threshold value.
In some embodiments of the present invention, the control method of the fuel system further comprises the steps of:
and controlling the electromagnetic valve to enable the time for opening the oil inlet of at least one filter element in the fuel filter to be a preset time length according to the result that the pressure signal is greater than or equal to a preset pressure threshold value.
In some embodiments of the present invention, the control method of the fuel system further comprises the steps of:
when the engine is in an idling state, the electromagnetic valve is controlled to enable the oil inlet of any one filter element in the fuel filter to be opened.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
FIG. 1 schematically illustrates a schematic structural diagram of a fuel system according to an embodiment of the present invention;
FIG. 2 schematically illustrates a control logic diagram of a control method of a fuel system according to an embodiment of the invention;
the reference symbols in the drawings denote the following:
10: oil tank, 20: fuel filter, 21: a filter element, 22: electromagnetic valve, 30: oil delivery pump, 40: fuel injection pump, 50: a common rail pipe;
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "second" and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, an element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "inner", "side", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 2, a first aspect of the present invention provides a fuel filter 20, where the fuel filter 20 includes a plurality of filter elements 21 connected in parallel with each other and a solenoid valve 22, the filter elements 21 are provided with oil inlets, and the solenoid valve 22 is used for controlling the opening or closing of the oil inlets of the plurality of filter elements 21.
The fuel filter 20 provided by the invention comprises a plurality of filter elements 21 which are connected in parallel, an electromagnetic valve 22 is arranged to control the opening or closing of the oil inlet of the filter elements 21, the electromagnetic valve 22 can be in various forms, such as an electric reversing valve, and the opening and closing of the oil inlet are controlled by rotating the valve core through the electric reversing valve by butting a plurality of output ports of the electric reversing valve with the oil inlets of a plurality of valve cores one by one.
A second aspect of the invention provides a fuel system comprising:
a fuel tank 10;
a fuel delivery pump 30, the fuel delivery pump 30 being for pumping fuel from the fuel tank 10;
ECU；
according to the fuel filter 20 provided by the first aspect of the invention, the inlet of the fuel filter 20 is communicated with the fuel tank 10, the outlet of the fuel filter 20 is communicated with the fuel delivery pump 30, and the electromagnetic valve 22 is electrically connected with the ECU;
a pressure sensor electrically connected to the ECU for monitoring the pressure at the fuel outlet of the fuel filter 20.
According to the fuel oil system provided by the second aspect of the invention, the ECU controls the electromagnetic valve 22, so that the opening and closing of the oil inlets of the plurality of filter elements 21 are controlled, the number of the filter elements 21 participating in the work of the fuel oil filter 20 is related to the working condition of an engine, when the engine is in idle speed, a single filter element 21 participates in the work, the exhaust time is reduced, and the rail pressure is accelerated to be established; after the engine is successfully started, judging whether the fuel system is abnormal, if so, starting the working state of the multi-stage filter element 21, and realizing the fault redundancy of the filter element 21; when the engine is in a load working condition, the ECU calculates and judges the required oil quantity of the engine in real time, the required oil quantity of the engine is directly read from the ECU, the required oil quantity is calculated in real time according to the injection quantity of an oil injector, the leakage quantity of the oil injector and the fuel quantity of a system pipeline, and the filter elements 21 with proper quantity are selected to participate in working according to the real-time working condition of the engine, so that the efficiency is improved, and.
In some embodiments of the present invention, the solenoid valve 22 is a small-sized electric directional valve, which effectively reduces the volume of the fuel filter 20, and includes an input port and a plurality of output ports, the plurality of output ports are correspondingly communicated with the plurality of valve spools, the input port is selectively communicated with at least one of the plurality of output ports by controlling the valve spools, and the input port is communicated with the fuel tank 10.
In some embodiments of the present invention, the plurality of outlets includes a first outlet, a second outlet, and a third outlet, and the plurality of cartridges 21 includes a first cartridge in communication with the first outlet, a second cartridge in communication with the second outlet, and a third cartridge in communication with the third outlet. The multi-valve core working mode is designed according to various working conditions of the engine, for example, a single-valve core mode in which only the first filter element participates in working, a bipolar filter element mode in which the second filter element and the third filter element participate in working at the same time, and a double-side filter element working mode in which all the filter elements participate in working.
In some embodiments of the present invention, the fuel system further comprises a rail pressure sensor for monitoring the pressure of the common rail 50 and a flow metering unit for monitoring the oil output of the oil tank 10, both of which are electrically connected to the ECU. The working state of the engine is monitored by arranging the rail pressure sensor, and the flow state of the fuel system is monitored by arranging the flow metering unit.
In some embodiments of the present invention, the fuel system further comprises a fuel injection pump 40, the fuel tank 10, the fuel delivery pump 30 and the fuel injection pump 40 connected in series, and a fuel filter 20 is disposed between the fuel tank 10 and the fuel delivery pump 30 and between the fuel delivery pump 30 and the fuel injection pump 40. One fuel filter 20 between the oil tank 10 and the fuel delivery pump 30 is a fuel coarse filter, one fuel filter 20 between the fuel delivery pump 30 and the fuel injection pump 40 is a fuel fine filter, and two fuel filters 20 are arranged to form coarse filtration and fine filtration, so that the filtration effect of the fuel system is improved.
A third aspect of the present invention provides a control method for a fuel system, which is implemented according to the fuel system of the second aspect of the present invention, the control method for the fuel system comprising the steps of:
judging whether the starting of the engine is finished or not;
according to the result that the starting of the generator is not finished, controlling the electromagnetic valve 22 to open the oil inlet of one filter element 21 of the fuel filter 20;
judging whether the engine is in an abnormal state or not according to the result of the completion of the starting of the generator;
according to the result that the engine is in an abnormal state, controlling the electromagnetic valve 22 to open oil inlets of all filter elements 21 of the fuel filter 20;
determining a filter element 21 which needs to participate in work according to the oil demand of the engine and the result that the engine is not in an abnormal state;
the electromagnetic valve 22 is controlled to open the oil inlet of the filter element 21 which is judged to be required to participate in the work in the fuel filter 20.
According to the control method of the fuel system provided by the third aspect of the invention, the number of the filter elements 21 is controlled through the ECU, the single filter element 21 participates in working during starting, the exhaust volume of the whole low-pressure oil way is reduced, the corresponding exhaust time is short, the harsh requirement on the low-speed capability of the oil delivery pump 30 is low, the starting time of the engine is reduced, and the starting performance of the engine is improved. When the engine works under the load, the number of the filter elements 21 participating in the work is controlled according to the real-time working condition of the engine, the sequential working state of the filter elements 21 is realized, the working potential of the system is improved to a greater extent, and the filter elements are combined with an alarm device to realize more accurate maintenance judgment. Replacement of the filter cartridge 21 without stopping the machine can be achieved when the filter cartridge 21 requires maintenance.
In some embodiments of the invention, the method of controlling a fuel system further comprises the steps of:
judging the relation between the oil demand of the engine and a first preset oil threshold according to the result that the engine is not in an abnormal state;
according to the result that the oil demand of the engine is greater than a first preset oil quantity threshold value, controlling the electromagnetic valve 22 to open oil inlets of all filter elements 21 in the fuel filter 20;
receiving a pressure signal of a pressure sensor according to a result that the oil demand of the engine is not greater than a first preset oil quantity threshold;
judging the relation between the pressure signal and a preset pressure threshold;
controlling the electromagnetic valve 22 to open the oil inlets of the two filter elements 21 in the fuel filter 20 according to the result that the pressure signal is smaller than the preset pressure threshold;
re-judging the relation between the pressure signal and the preset pressure threshold;
and controlling the electromagnetic valve 22 to open the oil inlets of all the filter elements 21 in the fuel filter 20 according to the result that the pressure signal is smaller than the preset pressure threshold value.
The fuel pressure at the fuel outlet end of the fuel filter 20 is detected by a pressure sensor, and whether the fuel filter 20 is in failure and whether the filter element 21 is in over-limit use are judged by a fuel pressure signal.
In some embodiments of the invention, the method of controlling a fuel system further comprises the steps of:
according to the result that the pressure signal is greater than or equal to the preset pressure threshold value, the electromagnetic valve 22 is controlled to enable the time for opening the oil inlet of at least one filter element 21 in the fuel filter 20 to be a preset time length. The filter element 21 is set to be preset for a long time, and the filtering efficiency is improved.
In some embodiments of the invention, the method of controlling a fuel system further comprises the steps of:
when the engine is in an idling state, the control electromagnetic valve 22 enables the oil inlet of any filter element 21 in the fuel filter 20 to be opened. The idle mode is adopted, the function of replacing the filter element 21 without stopping the machine is realized, the state of the working filter element 21 is automatically switched, and the maintenance function is realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a fuel filter, its characterized in that, fuel filter includes solenoid valve and a plurality of filter cores that connect in parallel each other, the filter core is equipped with the oil inlet, the solenoid valve is used for control a plurality of filter cores open or close of oil inlet.
2. A fuel system, comprising:
an oil tank;
a fuel transfer pump for pumping fuel from a fuel tank;
ECU；
the fuel filter of claim 1, an inlet of the fuel filter being in communication with the fuel tank, an outlet of the fuel filter being in communication with the fuel delivery pump, the solenoid valve being electrically connected to the ECU;
a pressure sensor electrically connected to the ECU, the pressure sensor for monitoring a pressure at a fuel outlet of the fuel filter.
3. The fuel system as recited in claim 2, wherein said solenoid valve is an electrically operated directional valve including an input port and a plurality of output ports, said plurality of output ports being in corresponding communication with said plurality of valve spools, said input port being selectively in communication with at least one of said output ports, and said input port being in communication with said fuel tank.
4. The fuel system of claim 3, wherein the plurality of output ports includes a first output port, a second output port, and a third output port, and the plurality of filter cartridges includes a first filter cartridge in communication with the first output port, a second filter cartridge in communication with the second output port, and a third filter cartridge in communication with the third output port.
5. The fuel system of claim 2, further comprising a rail pressure sensor for monitoring a pressure of the common rail and a flow metering unit for monitoring an amount of oil exiting the oil tank, the rail pressure sensor and the flow metering unit both being electrically connected to the ECU.
6. The fuel system according to any one of claims 2 to 5, further comprising a fuel injection pump, wherein the fuel tank, the fuel delivery pump and the fuel injection pump are connected in series, and wherein one fuel filter is disposed between the fuel tank and the fuel delivery pump and between the fuel delivery pump and the fuel injection pump.
7. A control method of a fuel system implemented according to any one of claims 2 to 6, characterized by comprising the steps of:
judging whether the starting of the engine is finished or not;
according to the result that the starting of the generator is not finished, controlling the electromagnetic valve to enable the oil inlet of one filter element of the fuel filter to be opened;
judging whether the engine is in an abnormal state or not according to the result of the completion of the starting of the generator;
controlling the electromagnetic valve to open the oil inlets of all the filter elements of the fuel filter according to the result that the engine is in an abnormal state;
determining the filter element which needs to participate in working according to the oil demand of the engine and the result that the engine is not in an abnormal state;
and controlling the electromagnetic valve to enable the oil inlet of the filter element which is judged to be required to participate in the work in the fuel filter to be opened.
8. The fuel system control method according to claim 7, further comprising the step of:
judging the relation between the oil demand of the engine and a first preset oil threshold according to the result that the engine is not in an abnormal state;
according to the result that the required oil quantity of the engine is larger than the first preset oil quantity threshold value, controlling the electromagnetic valve to enable the oil inlets of all the filter elements in the fuel filter to be opened;
receiving a pressure signal of the pressure sensor according to a result that the oil demand of the engine is not greater than the first preset oil quantity threshold;
judging the relation between the pressure signal and a preset pressure threshold value;
controlling the electromagnetic valve to open the oil inlets of two filter elements in the fuel filter according to the result that the pressure signal is smaller than a preset pressure threshold value;
re-judging the relation between the pressure signal and a preset pressure threshold value;
and controlling the electromagnetic valve to open the oil inlets of all the filter elements in the fuel filter according to the result that the pressure signal is smaller than a preset pressure threshold value.
9. The fuel system control method according to claim 7 or 8, characterized by further comprising the steps of:
and controlling the electromagnetic valve to enable the time for opening the oil inlet of at least one filter element in the fuel filter to be a preset time length according to the result that the pressure signal is greater than or equal to a preset pressure threshold value.
10. The fuel system control method according to claim 7 or 8, characterized by further comprising the steps of:
when the engine is in an idling state, the electromagnetic valve is controlled to enable the oil inlet of any one filter element in the fuel filter to be opened.
Priority Applications (1)
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| CN202010918067.9A CN112211763A (en) | 2020-09-03 | 2020-09-03 | Fuel filter, fuel system and control method of fuel system |
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| CN202010918067.9A CN112211763A (en) | 2020-09-03 | 2020-09-03 | Fuel filter, fuel system and control method of fuel system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027651A (en) * | 2021-04-29 | 2021-06-25 | 广西玉柴机器股份有限公司 | Structure of low-pressure oil way of non-road diesel engine and rapid pressure building method |
| CN115143001A (en) * | 2022-06-22 | 2022-10-04 | 中联重科土方机械有限公司 | Method for detecting fault, controller and fuel retention system |
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