CN113898508A - Control system and method for electric oil delivery pump of diesel engine - Google Patents
Control system and method for electric oil delivery pump of diesel engine Download PDFInfo
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- CN113898508A CN113898508A CN202111010430.8A CN202111010430A CN113898508A CN 113898508 A CN113898508 A CN 113898508A CN 202111010430 A CN202111010430 A CN 202111010430A CN 113898508 A CN113898508 A CN 113898508A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000000446 fuel Substances 0.000 claims abstract description 88
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims description 11
- 230000003213 activating effect Effects 0.000 claims description 8
- 239000002283 diesel fuel Substances 0.000 claims description 7
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 196
- 238000012546 transfer Methods 0.000 description 52
- 230000000740 bleeding effect Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011045 prefiltration Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
- F02M37/08—Feeding by means of driven pumps electrically driven
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
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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
- F02D41/30—Controlling fuel injection
- F02D41/3082—Control of electrical fuel pumps
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a control system and a control method for an electric oil delivery pump of a diesel engine. The engine control device comprises a rotating speed detection module, an engine control module and an engine control module, wherein the rotating speed detection module is used for detecting the rotating speed of an engine and sending the rotating speed to the engine control module; the fuel pressure detection module is used for detecting the fuel pressure of the low-pressure oil way and sending the fuel pressure to the engine control module; an engine control module determines whether to activate the electric fuel delivery pump based on an engine speed and a fuel pressure. The invention can realize that the electric oil delivery pump can assist the engine to pump oil under the condition that the low-pressure oil delivery pump fails in the whole vehicle and the low-pressure oil path of the engine, and particularly when the low-pressure oil delivery pump fails, the engine can be ensured to continue low-load work, and the vehicle can continue to run to a service station for maintenance, thereby reducing the possibility of vehicle breakdown.
Description
Technical Field
The invention belongs to the technical field of automobile control, and particularly relates to a control system and method for an electric oil delivery pump of a diesel engine.
Background
In the current diesel engine, the electric oil transfer pump is mainly used for discharging air in a low-pressure oil way before the engine is started to assist the engine in starting. The electric fuel pump is generally installed between the prefilter and the low-pressure fuel pump.
The patent CN104047782B discloses an engine fuel system and a control method, wherein the engine fuel system comprises an engine electronic control unit, a manual oil pump, an electronic oil delivery pump, an oil delivery pump and a diesel filter; the engine electronic control unit is used for controlling the electronic oil delivery pump to work in the engine pre-starting stage and controlling the electronic oil delivery pump to stop working after the engine is started; one end of the electronic oil transfer pump is connected with an oil inlet of the manual oil pump, and the other end of the electronic oil transfer pump is connected with an oil outlet of the oil transfer pump; the diesel filter is connected with an oil outlet of the oil transfer pump through a low-pressure oil inlet pipe; an automatic exhaust screw is arranged at the top port of the diesel filter; and the electronic oil delivery pump is used for discharging air in a low-pressure oil way through the automatic exhaust screw in the engine pre-starting stage. The system enables the low-pressure oil circuit of the engine in the communication system to be started successfully when air exists, and an electronic oil transfer pump with high reliability is not needed.
Patent CN111520239A discloses a control method and a control device for a low-pressure oil circuit of an engine and a low-pressure oil circuit system, which comprises a controller, an engine, a rotation speed sensor, a pressure sensor and an electric oil transfer pump; the rotating speed sensor is connected with the engine and the controller, and the pressure sensor is connected with the electric oil transfer pump and the controller. The working process is as follows: the electric oil delivery pump is connected with a high-pressure oil pump in the low-pressure oil path system, a rotating speed value of an engine is obtained through a rotating speed sensor and is sent to the ECU, a pressure value of an inlet of the electric oil delivery pump is obtained through a pressure sensor and is sent to the ECU, if the rotating speed value of the engine is equal to zero, the ECU controls the electric oil delivery pump to start, controls the electric oil delivery pump 5 to continuously work for a preset time value, and then controls the electric oil delivery pump to stop working; if the rotating speed value of the engine is larger than zero, the ECU controls the electric oil delivery pump to start according to the fact that the pressure value of the inlet of the electric oil delivery pump is smaller than the preset pressure value, at the moment, the electric oil delivery pump starts to work, and after the engine stops working, the ECU is powered off to control the electric oil delivery pump to stop working.
The corresponding control method comprises the following steps: obtaining an engine rotating speed value;
controlling the electric oil transfer pump to start according to the fact that the rotating speed value of the engine is equal to zero, and controlling the electric oil transfer pump to continuously work for a preset time value; or acquiring the pressure value of the inlet of the electric oil transfer pump according to the condition that the rotating speed value of the engine is greater than zero, and controlling the electric oil transfer pump to start according to the condition that the pressure value of the inlet of the electric oil transfer pump is smaller than a preset pressure value.
According to the control method of the low-pressure oil circuit of the engine, whether the electric oil transfer pump works or not is controlled through the ECU, so that the resistance of a low-pressure oil circuit system is overcome, the requirement on the capacity of the high-pressure oil pump is met, the engine can normally work, the problem that the high-pressure oil pump cannot be normally used due to too large resistance is avoided, the problem that the capacity of the high-pressure oil pump with the oil transfer pump is insufficient can be solved, and the fuel resistance of the low-pressure system is effectively overcome.
The above patent can see that the control logic of the current electric oil transportation pump work mainly has two types:
after an ECU module is powered on, an electric oil transfer pump starts to work, and stops working after the set working time is reached;
after the ECU module is powered on, the electric oil transfer pump starts to work, and when any one of the following conditions exists, the electric oil transfer pump stops working: a. the engine speed is greater than 0; b. the set maximum operating time is reached.
The problems of the current scheme are as follows: the electric oil delivery pump is only used for assisting the starting of the engine, and cannot assist the engine to supply oil when the low-pressure oil delivery pump fails when the whole vehicle and the low-pressure oil path of the engine fail, and users need road rescue.
Disclosure of Invention
The present invention is directed to a control system and method for an electric oil pump of a diesel engine, which can assist an engine in pumping oil when a low-pressure oil pump fails.
The technical scheme adopted by the invention is as follows: a control system of an electric oil delivery pump of a diesel engine comprises
The rotating speed detection module is used for detecting the rotating speed of the engine and sending the rotating speed to the engine control module;
the fuel pressure detection module is used for detecting the fuel pressure of the low-pressure oil way and sending the fuel pressure to the engine control module;
an engine control module determines whether to activate the electric fuel delivery pump based on an engine speed and a fuel pressure.
And further, when the engine speed is greater than or equal to the first speed set value and the fuel pressure is less than the first pressure set value, activating the electric fuel delivery pump to pump the fuel until the engine is powered off.
And further, when the engine speed is greater than or equal to a second speed set value and the fuel pressure is less than a second pressure set value, activating the electric fuel delivery pump to pump oil until the engine is powered off, wherein the first speed set value is less than the second speed set value.
A control method for an electric fuel delivery pump of a diesel engine comprises the steps of detecting the rotating speed of an engine and the fuel pressure in a low-pressure oil way in real time during the running process of a vehicle, and determining whether to activate the electric fuel delivery pump according to the rotating speed of the engine and the fuel pressure.
And further, when the engine speed is greater than or equal to the first speed set value and the fuel pressure is less than the first pressure set value, activating the electric fuel delivery pump to pump the fuel until the engine is powered off.
Further, the first rotating speed set value r1 is 80-r 1-500 rpm.
Further, the first pressure set value p1 is 1 ≦ p1 < 1.5 bar.
And further, when the engine speed is greater than or equal to a second speed set value and the fuel pressure is less than a second pressure set value, activating the electric fuel delivery pump to pump oil until the engine is powered off.
Furthermore, the second rotating speed set value r2 is r2 which is more than or equal to 500rpm and less than or equal to 800 rpm.
Further, the second pressure set point p2 is 1.5. ltoreq. p 2. ltoreq.3 bar.
The invention can realize that the electric oil delivery pump can assist the engine to pump oil under the condition that the low-pressure oil delivery pump fails in the whole vehicle and the low-pressure oil path of the engine, and particularly when the low-pressure oil delivery pump fails, the engine can be ensured to continue low-load work, and the vehicle can continue to run to a service station for maintenance, thereby reducing the possibility of vehicle breakdown.
Drawings
FIG. 1 is a schematic diagram of a fuel system for an engine according to the present invention.
Fig. 2 is a flow chart of the electric fuel delivery pump of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Where the terms "comprising", "having" and "including" are used in this specification, there may be another part or parts unless otherwise stated, and the terms used may generally be in the singular but may also be in the plural.
It should be noted that although the terms "first," "second," "top," "bottom," "side," "other," "end," "other end," and the like may be used and used in this specification to describe various components, these components and parts should not be limited by these terms. These terms are only used to distinguish one element or section from another element or section. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, with the top and bottom elements being interchangeable or switchable with one another, where appropriate, without departing from the scope of the present description; the components at one end and the other end may be of the same or different properties to each other.
Further, in constituting the component, although it is not explicitly described, it is understood that a certain error region is necessarily included.
In describing positional relationships, for example, when positional sequences are described as being "on.. above", "over.. below", "below", and "next", unless such words or terms are used as "exactly" or "directly", they may include cases where there is no contact or contact therebetween. If a first element is referred to as being "on" a second element, that does not mean that the first element must be above the second element in the figures. The upper and lower portions of the member will change depending on the angle of view and the change in orientation. Thus, in the drawings or in actual construction, if a first element is referred to as being "on" a second element, it can be said that the first element is "under" the second element and the first element is "over" the second element. In describing temporal relationships, unless "exactly" or "directly" is used, the description of "after", "subsequently", and "before" may include instances where there is no discontinuity between steps.
The features of the various embodiments of the present invention may be partially or fully combined or spliced with each other and performed in a variety of different configurations as would be well understood by those skilled in the art. Embodiments of the invention may be performed independently of each other or may be performed together in an interdependent relationship.
As shown in figure 1, the engine fuel system comprises an oil tank, a pre-filter with an oil-water separation function and a manual oil pump, an electric oil delivery pump, a main filter, a high-pressure oil pump, a high-pressure oil rail, an engine control module (ECU) and a series of sensors which are sequentially connected, wherein the electric oil delivery pump is required before a low-pressure oil delivery pump, and a fuel pressure sensor is required behind the low-pressure oil delivery pump for diagnosing whether the pressure of a low-pressure oil path is normal.
In order to ensure that the engine can still continue to work under load under the condition that the low-pressure fuel delivery pump has a fault, the rotating speed of the engine and the fuel pressure in a low-pressure oil way are detected in real time through a fuel pressure sensor and an engine rotating speed sensor which are arranged during the running process of a vehicle, and whether the electric fuel delivery pump is activated or not is determined according to the rotating speed of the engine and the fuel pressure.
In the engine pre-starting stage, an electric fuel delivery pump is used to achieve exhaust in the low pressure oil circuit. The operation of which is described in detail below.
The ECU is used for controlling the electric oil transfer pump to work in the pre-starting stage of the engine and controlling the electric oil transfer pump to stop working after the engine is started; the filter is connected with an oil outlet of the oil transfer pump through a low-pressure oil inlet pipe; an automatic exhaust screw is arranged at the top port of the diesel filter; and the electric oil transfer pump is used for discharging air in a low-pressure oil way through the automatic exhaust screw in the engine pre-starting stage.
That is, in the engine pre-start phase, the electric oil delivery pump operates. It is understood that the manual oil pump does not participate in the operation in the engine pre-start stage in the present embodiment, but is replaced with the electric oil delivery pump.
It should be noted that the automatic air-bleeding screw in the present embodiment is different from the air-bleeding screw in the prior art. The air bleeding screw in the prior art can exhaust air in the diesel filter only by a gap after being unscrewed, and the automatic air bleeding screw in the embodiment can automatically exhaust air without manually unscrewing the air bleeding screw to exhaust air as in the prior art.
According to the engine fuel system provided by the embodiment, a pre-oil supply pipeline is additionally arranged at an oil inlet of an original manual oil pump and an oil outlet of an oil transfer pump, an electric oil transfer pump is arranged on the pre-oil supply pipeline, and the electric oil transfer pump only works at the pre-starting stage of an engine. After the engine is started, the electric fuel delivery pump stops operating. And air in the low-pressure oil way can be discharged through the automatic exhaust screw during the pre-starting process. In addition, the electric oil transfer pump in the embodiment does not need to work all the time in the running process of the engine, and only needs to work in the pre-starting stage, so that the electric oil transfer pump with very high reliability does not need to be used. The life requirement for the electronic fuel delivery pump is much lower than that of the engine. The engine fuel system provided by the embodiment can be started successfully when air exists in a low-pressure oil path of an engine in a communication system, and an electric fuel delivery pump with very high reliability is not needed.
The engine fuel system provided by the embodiment further comprises the automatic exhaust pipe and an oil return pipe; one end of the automatic exhaust pipe is connected with the automatic exhaust screw, and the other end of the automatic exhaust pipe is connected with the oil return pipe; the automatic exhaust pipe is used for conveying the oil discharged by the diesel oil filter through the automatic exhaust screw to the oil return pipe.
Because the gas exhaust in the diesel oil filter in-process can have a certain amount of oil blowout, consequently, in order to recycle spun oil, can retrieve, the automatic blast pipe has been increased in this implementation, and automatic blast pipe is connected with the oil return pipe, carries the oil return pipe with the oil of retrieving, retrieves the oil tank by the oil return pipe with the oil of retrieving.
It should be noted that, an exhaust hole is provided in the middle of the bolt of the automatic exhaust screw, through which air in the low-pressure oil path can be exhausted, and in addition to the exhaust hole, the automatic exhaust screw may be provided with another mechanism instead of the exhaust hole to achieve automatic exhaust, which is not illustrated herein.
In the above embodiment of the system, the automatic exhaust pipe is connected to the oil return pipe, and the oil sprayed from the diesel filter is recovered to the oil tank through the oil return pipe. In the present embodiment, the automatic exhaust pipe is directly connected to a fuel tank (not shown), and the oil discharged from the diesel filter is recovered to the fuel tank. That is, in this embodiment, one end of the automatic exhaust pipe is connected to the automatic exhaust screw, and the other end of the automatic exhaust pipe is connected to the oil tank; the automatic exhaust pipe is used for recovering the oil discharged by the diesel oil filter through the automatic exhaust screw to the oil tank.
It should be noted that, in the above embodiments of the system, the fuel system of the engine may further include a relay; the relay is connected with the electric oil transfer pump in series; the relay is used for controlling whether the electric oil delivery pump works or not, and when the relay is closed, the electric oil delivery pump works; when the relay is disconnected, the electric oil transfer pump stops working; and the ECU is used for controlling the relay to be closed in the engine pre-starting stage and controlling the relay to be opened after the engine is started. Because the electric oil transfer pump is controlled by the relay, the electric oil transfer pump can also be realized in a remote monitoring mode, the remote monitoring center sends a control instruction to the ECU, and the ECU controls the relay to be closed so that the electric oil transfer pump works. Thus, the working condition that the generator set for communication is located in a remote area and unattended operation is met.
The operating time of the electric oil transfer pump may be controlled by the ECU controlling the relay to close for a predetermined period of time, the predetermined period of time being greater than or equal to the duration of the engine pre-start phase.
For example, the engine pre-start phase is 10 seconds, the predetermined time period may be set to 15 seconds, and the predetermined time period is set to be longer than the engine pre-start phase in order to ensure that the engine is completely started. Of course, it may be set to 10 seconds as the time equivalent to the engine pre-start phase.
In addition, the electric oil transfer pump and the manual oil pump are dual-guaranteed, if the electric oil transfer pump breaks down, the engine can be started in advance, and normal pre-starting operation can be completed manually through the manual oil pump.
Based on the control system, the invention also provides a control method of the electric fuel delivery pump of the diesel engine.
In the scheme, when the rotating speed of the engine is greater than or equal to the first rotating speed set value and the fuel pressure is smaller than the first pressure set value, the electric fuel delivery pump is activated to pump oil until the engine is powered off. The first set rotating speed value r1 is more than or equal to 80 and less than or equal to r1 and less than 500rpm, preferably 80 rpm. The first pressure setpoint p1 is 1. ltoreq.p 1 < 1.5bar, preferably 1 bar.
In the scheme, when the rotating speed of the engine is greater than or equal to the second rotating speed set value and the fuel pressure is less than the second pressure set value, the electric fuel delivery pump is activated to pump oil until the engine is powered off. The second set rotating speed r2 is more than or equal to 500r 2 and less than or equal to 800rpm, preferably 500 rpm. The second pressure setpoint p2 is 1.5. ltoreq. p 2. ltoreq.3 bar, preferably 2 bar.
The control process of the electric oil delivery pump when the engine is started is as follows:
s401: in the pre-starting stage of the engine, controlling the electric oil transfer pump to work to discharge air in the low-pressure oil way through the automatic exhaust screw;
in the prior art, an electric oil delivery pump is not provided, only a manual oil pump is provided, and the manual oil pump is used for realizing air discharge in a low-pressure oil way in the introduction of pre-starting of an engine.
In the embodiment, the electric fuel delivery pump is added, namely, a pre-fuel supply pipeline is merged into the original fuel path. In the pre-starting stage of the engine, the electric oil delivery pump works to bypass the manual oil pump, so that the electronic oil delivery pump can be used for discharging air in the low-pressure oil way in the starting stage.
S402: and after the engine is started, controlling the electric oil transfer pump to stop working.
Namely, in the engine pre-starting stage, the electric oil transportation pump works;
the fuel oil supply path is as follows: the fuel tank, the electric fuel delivery pump, the diesel filter and the fuel injection pump.
The path of the air in the oil path is: the device comprises an electric oil transfer pump, a low-pressure oil inlet pipe, a diesel filter and an automatic exhaust screw.
It should be noted that the automatic air-bleeding screw in the present embodiment is different from the air-bleeding screw in the prior art. The air bleeding screw in the prior art can discharge the gas in the diesel filter only by a gap after being unscrewed, and the automatic air bleeding screw in the embodiment can automatically discharge the gas in the low-pressure oil way, so that the air bleeding screw does not need to be unscrewed manually for air bleeding like the prior art.
The fuel control method for the engine provided by the embodiment controls the electric fuel delivery pump to work only in the pre-starting stage of the engine. After the engine is started, the electric fuel delivery pump stops operating. And air in the low-pressure oil way can be discharged through the automatic exhaust screw during the pre-starting process. In addition, the electric oil transfer pump in the embodiment does not need to work all the time in the running process of the engine, and only needs to work in the pre-starting stage, so that the electric oil transfer pump with very high reliability does not need to be used. The life requirement for the electric fuel delivery pump is much lower than that of the engine. The engine fuel control method provided by the embodiment can ensure that the low-pressure oil circuit of the engine in the communication system can be started successfully when air exists in the low-pressure oil circuit, and an electronic fuel delivery pump with very high reliability is not needed.
The second method embodiment:
the difference between this embodiment and the first embodiment of the method is that steps S501 and S502 are added;
s501: controlling one end of the automatic exhaust pipe to be connected with the automatic exhaust screw, and controlling the other end of the automatic exhaust pipe to be connected with an oil return pipe;
s502: and controlling the diesel filter to convey oil discharged by the automatic exhaust screw to the oil return pipe.
Because the gas exhaust in the diesel oil filter in-process can have a certain amount of oil blowout, consequently, in order to recycle spun oil, can retrieve, the automatic blast pipe has been increased in this implementation, and automatic blast pipe is connected with the oil return pipe, carries the oil return pipe with the oil of retrieving, retrieves the oil tank by the oil return pipe with the oil of retrieving.
It should be noted that, an exhaust hole is provided in the middle of the bolt of the automatic exhaust screw, through which air in the low-pressure oil path can be exhausted, and in addition to the exhaust hole, the automatic exhaust screw may be provided with another mechanism instead of the exhaust hole to achieve automatic exhaust, which is not illustrated herein.
The third method embodiment:
in the second embodiment of the method, the automatic exhaust pipe is connected to an oil return pipe, and the oil sprayed from the diesel filter is recovered to the oil tank through the oil return pipe. In the embodiment, the automatic exhaust pipe is directly connected to the oil tank, and the oil sprayed by the diesel oil filter is recycled to the oil tank.
The difference between this embodiment and the first embodiment of the method is that steps S601 and S602 are added;
s601: controlling one end of the automatic exhaust pipe to be connected with the automatic exhaust screw, and controlling the other end of the automatic exhaust pipe to be connected with the oil tank;
s602: and controlling the diesel filter to recycle the oil discharged by the automatic exhaust screw to the oil tank.
It should be noted that, in the above embodiments of the method, the following steps may also be included:
the control electric oil transfer pump works specifically as follows:
the relay connected with the electric oil transfer pump in series is controlled to be closed, so that the electric oil transfer pump works;
the control the electric oil transfer pump stops working, and specifically comprises the following steps:
and the electric oil transfer pump stops working by controlling a relay connected with the electric oil transfer pump in series to be disconnected.
Because the electric oil transfer pump is controlled by the relay, the electric oil transfer pump can also be realized in a remote monitoring mode, the remote monitoring center sends a control instruction to the ECU, and the ECU controls the relay to be closed so that the electric oil transfer pump works. Thus, the working condition that the generator set for communication is located in a remote area and unattended operation is met.
The operating time of the electric oil transfer pump may be controlled by the ECU controlling the relay to close for a predetermined period of time, the predetermined period of time being greater than or equal to the duration of the engine pre-start phase.
For example, the engine pre-start phase is 10 seconds, the predetermined time period may be set to 15 seconds, and the predetermined time period is set to be longer than the engine pre-start phase in order to ensure that the engine is completely started. Of course, it may be set to 10 seconds as the time equivalent to the engine pre-start phase.
In addition, the electric oil transfer pump and the manual oil pump are dual-guaranteed, if the electric oil transfer pump breaks down, the engine can be started in advance, and normal pre-starting operation can be completed manually through the manual oil pump.
It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not intended to be limited to the specific order or hierarchy presented.
The foregoing description of the embodiments and specific examples of the invention have been presented for purposes of illustration and description; it is not intended to be the only form in which the embodiments of the invention may be practiced or utilized. The embodiments are intended to cover the features of the various embodiments as well as the method steps and sequences for constructing and operating the embodiments. However, other embodiments may be utilized to achieve the same or equivalent functions and step sequences.
In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. To those skilled in the art; various modifications to these embodiments will be readily apparent, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".
Those of skill in the art will further appreciate that the various illustrative logical blocks, units, and steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate the interchangeability of hardware and software, various illustrative components, elements, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present embodiments.
The various illustrative logical blocks, or elements, described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.
The foregoing is considered as illustrative of the preferred embodiments of the invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. The utility model provides a control system of diesel engine electric oil delivery pump which characterized in that: comprises that
The rotating speed detection module is used for detecting the rotating speed of the engine and sending the rotating speed to the engine control module;
the fuel pressure detection module is used for detecting the fuel pressure of the low-pressure oil way and sending the fuel pressure to the engine control module;
an engine control module determines whether to activate the electric fuel delivery pump based on an engine speed and a fuel pressure.
2. The control system for an electric diesel fuel delivery pump of claim 1, wherein: and when the rotating speed of the engine is greater than or equal to the first rotating speed set value and the fuel pressure is less than the first pressure set value, activating the electric fuel delivery pump to pump the fuel until the engine is powered off.
3. The control system for an electric diesel fuel delivery pump of claim 2, wherein: and when the rotating speed of the engine is greater than or equal to the second rotating speed set value and the fuel pressure is less than the second pressure set value, activating the electric fuel delivery pump to pump fuel until the engine is powered off, wherein the first rotating speed set value is less than the second rotating speed set value.
4. A control method of an electric oil delivery pump of a diesel engine is characterized by comprising the following steps: and in the running process of the vehicle, detecting the rotating speed of the engine and the fuel pressure in the low-pressure oil way in real time, and determining whether to activate the electric fuel delivery pump according to the rotating speed of the engine and the fuel pressure.
5. The control method of the diesel electric fuel delivery pump according to claim 4, characterized in that: and when the rotating speed of the engine is greater than or equal to the first rotating speed set value and the fuel pressure is less than the first pressure set value, activating the electric fuel delivery pump to pump the fuel until the engine is powered off.
6. The control method of the diesel electric fuel delivery pump according to claim 5, characterized in that: the first rotating speed set value r1 is r1 which is more than or equal to 80 and less than 500 rpm.
7. The control method of the diesel electric fuel delivery pump according to claim 5, characterized in that: the first pressure set value p1 is more than or equal to 1 and less than or equal to p1 and less than 1.5 bar.
8. The control method of the diesel electric fuel delivery pump according to claim 4, characterized in that: and when the rotating speed of the engine is greater than or equal to the second rotating speed set value and the fuel pressure is less than the second pressure set value, activating the electric fuel delivery pump to pump the fuel until the engine is powered off.
9. The control method of the diesel electric fuel delivery pump of claim 8, characterized in that: the second rotating speed set value r2 is r2 which is more than or equal to 500 and less than or equal to 800 rpm.
10. The control method of the diesel electric fuel delivery pump of claim 8, characterized in that: the second pressure set value p2 is more than or equal to 1.5 and less than or equal to p2 and less than or equal to 3 bar.
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| CN202111010430.8A CN113898508A (en) | 2021-08-31 | 2021-08-31 | Control system and method for electric oil delivery pump of diesel engine |
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| CN202111010430.8A CN113898508A (en) | 2021-08-31 | 2021-08-31 | Control system and method for electric oil delivery pump of diesel engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810385A (en) * | 2022-03-28 | 2022-07-29 | 东风汽车股份有限公司 | Fuel system exhaust method for first starting of light diesel vehicle |
| CN116335841A (en) * | 2023-03-30 | 2023-06-27 | 潍柴动力股份有限公司 | Control method and system for electric oil delivery pump of diesel engine based on fault self-diagnosis |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005105860A (en) * | 2003-09-29 | 2005-04-21 | Toyota Motor Corp | Fuel supply device for internal combustion engine |
| CN103925091A (en) * | 2014-04-09 | 2014-07-16 | 三一汽车起重机械有限公司 | Dynamic power matching method, dynamic power matching system and engineering machinery |
| CN104047782A (en) * | 2014-06-16 | 2014-09-17 | 华为技术有限公司 | Engine fuel system and control method |
| CN205559135U (en) * | 2016-02-05 | 2016-09-07 | 成都威特电喷有限责任公司 | It provides automatically controlled monoblock pump of low pressure fuel feeding inner loop to need not petroleum pump |
| CN110067652A (en) * | 2018-01-23 | 2019-07-30 | 中国航发商用航空发动机有限责任公司 | A kind of aero-engine oil supply system and oil-feeding control method |
| CN110778439A (en) * | 2019-09-26 | 2020-02-11 | 潍柴动力股份有限公司 | Anti-clamping stagnation system and method for diesel engine |
| CN111520239A (en) * | 2020-03-31 | 2020-08-11 | 潍柴动力股份有限公司 | Control method and control device for low-pressure oil way of engine and low-pressure oil way system |
-
2021
- 2021-08-31 CN CN202111010430.8A patent/CN113898508A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005105860A (en) * | 2003-09-29 | 2005-04-21 | Toyota Motor Corp | Fuel supply device for internal combustion engine |
| CN103925091A (en) * | 2014-04-09 | 2014-07-16 | 三一汽车起重机械有限公司 | Dynamic power matching method, dynamic power matching system and engineering machinery |
| CN104047782A (en) * | 2014-06-16 | 2014-09-17 | 华为技术有限公司 | Engine fuel system and control method |
| CN205559135U (en) * | 2016-02-05 | 2016-09-07 | 成都威特电喷有限责任公司 | It provides automatically controlled monoblock pump of low pressure fuel feeding inner loop to need not petroleum pump |
| CN110067652A (en) * | 2018-01-23 | 2019-07-30 | 中国航发商用航空发动机有限责任公司 | A kind of aero-engine oil supply system and oil-feeding control method |
| CN110778439A (en) * | 2019-09-26 | 2020-02-11 | 潍柴动力股份有限公司 | Anti-clamping stagnation system and method for diesel engine |
| CN111520239A (en) * | 2020-03-31 | 2020-08-11 | 潍柴动力股份有限公司 | Control method and control device for low-pressure oil way of engine and low-pressure oil way system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810385A (en) * | 2022-03-28 | 2022-07-29 | 东风汽车股份有限公司 | Fuel system exhaust method for first starting of light diesel vehicle |
| CN114810385B (en) * | 2022-03-28 | 2023-03-21 | 东风汽车股份有限公司 | Fuel system exhaust method for first starting of light diesel vehicle |
| CN116335841A (en) * | 2023-03-30 | 2023-06-27 | 潍柴动力股份有限公司 | Control method and system for electric oil delivery pump of diesel engine based on fault self-diagnosis |
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