CN114263542A - Air control method - Google Patents
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Abstract
The application provides an air control method, which is applied to a controller in an engine system, wherein an air distributor in the engine system is respectively connected to a main air passage through a starting air inlet branch and an air supplementing air inlet branch; the starting air inlet branch comprises a starting pressure reducing valve and a starting electromagnetic valve; the method comprises the steps that after whether an engine meets a starting condition or an in-cylinder air supply condition is determined respectively, and if the starting condition is met, the starting electromagnetic valve is controlled to be opened; if the in-cylinder air supplement condition is met, the air supplement electromagnetic valve is controlled to be opened, the starting air supplement and in-cylinder air supplement functions are realized by setting a control program and adding a controllable electromagnetic valve by utilizing the characteristics of different and complementary intersection of starting air supplement and air supplement in the engine cylinder, and the problem that the related scheme can only control the air intake in the engine cylinder and cannot control the air supplement in the engine cylinder in the operation process is solved.
Description
Technical Field
The invention relates to the technical field of control, in particular to an air control method.
Background
The marine engine is generally started by means of compressed air. Wherein, the engine with small cylinder diameter adopts an electric motor to drive a gear ring fixed on a flywheel to rotate, thereby starting the diesel engine; the engine with large cylinder diameter is generally started in a cylinder due to insufficient motor power, namely, each cylinder is provided with a cylinder cover starting valve, the tail end of a cam shaft is connected with an air distributor, and low-pressure air is sent into the cylinder through the corresponding cylinder cover starting valves in turn according to the firing sequence through the air distributor so as to push a piston to move to finish the starting.
The engine supercharger with large cylinder diameter has larger inertia and slow response at low speed, and needs air supplement measures to ensure the air supplement speed. The inventor researches and discovers that the existing engine can only realize the control of air intake for starting in a cylinder and can not control the air supply in the cylinder in the running process.
Disclosure of Invention
Therefore, the air control method is provided to solve the problem that the related scheme can only control air intake in the engine cylinder and cannot control air supplement in the engine cylinder in the operation process.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the application discloses an air control method, which is applied to a controller in an engine system, wherein an air distributor in the engine system is respectively connected to a main air passage through a starting air inlet branch and an air supplementing air inlet branch; the starting air inlet branch comprises a starting pressure reducing valve and a starting electromagnetic valve; the air supply inlet branch comprises: a gas supply pressure reducing valve and a gas supply electromagnetic valve; the method comprises the following steps:
respectively determining whether the engine meets a starting condition or an in-cylinder air supplement condition;
if the engine meets the starting condition, controlling the starting electromagnetic valve to be opened;
and if the engine meets the in-cylinder air supplement condition, controlling the air supplement electromagnetic valve to be opened.
Optionally, in the above air control method, after controlling the start solenoid valve to open, the method further includes:
and controlling a target cylinder cover air valve in the engine system to be opened according to a preset starting air inlet phase, so that the air distributor supplies air to the cylinder through the target cylinder cover air valve.
Optionally, in the above air control method, the preset starting intake phase is a preset power stroke period.
Optionally, in the above air control method, after controlling the make-up air solenoid valve to open, the method further includes:
and controlling a target cylinder cover air valve in the engine to be opened according to a preset air supplementing phase so that the air distributor supplies air to the cylinder through the target cylinder cover air valve.
Optionally, in the above air control method, the preset air supplement phase is a preset intake stroke period.
Optionally, in the above air control method, the starting intake branch further includes: the starting pressure test valve is used for testing the air pressure output by the starting pressure reducing valve, and before the starting electromagnetic valve is controlled to be opened, the method further comprises the following steps:
acquiring an intake air pressure value measured by the starting pressure test valve;
judging whether the intake air pressure value meets a preset intake pressure requirement or not;
if the air inlet pressure value is judged not to meet the preset air inlet pressure requirement, sending an alarm for prompting a user to start the abnormal air pressure;
and if the air inlet pressure value meets the preset air inlet pressure requirement, executing the step of controlling the starting electromagnetic valve to be opened.
Optionally, in the above air control method, the make-up air intake branch further includes: the air supply pressure test valve is used for testing the air pressure output by the air supply pressure reducing valve; before controlling the air make-up solenoid valve to be opened, the method further comprises the following steps:
acquiring a gas supplementing air pressure value measured by the gas supplementing pressure test valve;
judging whether the air supplementing pressure value meets the preset air supplementing pressure requirement or not;
if the air supplementing pressure value is judged not to meet the preset air supplementing pressure requirement, an alarm is sent out and used for prompting a user that the air supplementing pressure is abnormal;
and if the air supplementing pressure value is judged to meet the preset air supplementing pressure requirement, executing the step of controlling the air supplementing electromagnetic valve to be opened.
Optionally, in the above air control method, after controlling the start solenoid valve to open, the method further includes:
judging whether the rotating speed of the engine reaches a preset ignition rotating speed or not;
if the rotating speed of the engine is judged to reach the preset ignition rotating speed, the engine is judged to be started successfully;
and if the rotating speed of the engine is judged not to reach the preset ignition rotating speed, giving an alarm for prompting a user that the engine is abnormally started.
Optionally, in the above air control method, the engine satisfying the start condition includes: the engine is switched from a static state to a starting state, and the air pressure of the main air passage is larger than a preset air inlet air pressure value.
Optionally, in the above air control method, the engine satisfying the in-cylinder make-up condition includes: and the load of the engine is suddenly increased in the running state, and the air pressure of the main air passage is greater than a preset air supplementing air pressure value.
Based on the air control method provided by the invention, the air control method is applied to a controller in an engine system, and an air distributor in the engine system is respectively connected to a main air passage through a starting air inlet branch and an air supplementing air inlet branch; the starting air inlet branch comprises a starting pressure reducing valve and a starting electromagnetic valve; the method comprises the steps that after whether an engine meets a starting condition or an in-cylinder air supply condition is determined respectively, and if the starting condition is met, the starting electromagnetic valve is controlled to be opened; if the in-cylinder air supplement condition is met, the air supplement electromagnetic valve is controlled to be opened, the starting air supplement and in-cylinder air supplement functions are realized by setting a control program and adding a controllable electromagnetic valve by utilizing the characteristics of different and complementary intersection of starting air supplement and air supplement in the engine cylinder, and the problem that the related scheme can only control the air intake in the engine cylinder and cannot control the air supplement in the engine cylinder in the operation process is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a partial block diagram of an engine system provided in accordance with an embodiment of the present disclosure;
FIG. 2 is a flow chart of an air control method provided by an embodiment of the present application;
FIG. 3 is a schematic view of a start-supplement phase according to an embodiment of the present disclosure;
fig. 4 to 7 are flowcharts of four air control methods provided in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The application provides an air control method, which aims to solve the problem that related schemes only can control air intake in an engine cylinder and cannot control air supplement in the engine cylinder in the operation process.
The air control method can be applied to a controller in an engine system, as shown in fig. 1, in which an air distributor can be connected to a main air passage (a high-pressure compressed air passage in the figure) through a starting air inlet branch and a make-up air inlet branch, respectively. The starting intake branch may include a starting pressure reducing valve (pressure reducing valve 1 in the drawing) through which high-pressure air in the main air passage is reduced in pressure and a starting solenoid valve through which the high-pressure air may enter the air distributor. The air supply inlet branch can comprise an air supply pressure reducing valve (a pressure reducing valve 2 in the figure) and an air supply electromagnetic valve, and high-pressure air in the main air passage can enter the air distributor through the air supply electromagnetic valve after being reduced in pressure by the air supply pressure reducing valve.
It should be noted that the controller in the engine system may be an ECU (Electronic Control Unit) or other devices having a system Control function, and the present application is not particularly limited thereto, and as long as the devices capable of implementing the Control method provided in the following embodiments are within the scope of the present application.
Referring to fig. 2, the air control method may include the steps of:
and S100, respectively determining whether the engine meets a starting condition or an in-cylinder air supplement condition.
In practical applications, the engine satisfying the starting condition may be: the engine is switched from a static state to a starting state, and the air pressure of the main air passage is greater than a preset air inlet air pressure value. The specific value of the preset intake air pressure value can be determined according to the specific type of the engine and the user requirement, for example, if the engine is a large marine engine, the preset intake air pressure value can be 30bar, 25bar, 20bar, and the like.
It should be noted that the purpose of setting the air pressure of the main air duct to be greater than the preset intake pressure value is to enable the air pressure of the main air duct to have an emergency stop function at the same time, so as to avoid the occurrence of the situation that the vehicle cannot be stopped in an emergency due to insufficient air pressure of the main air duct. Of course, the air pressure in the main air passage larger than the preset intake air pressure value can eliminate the low pressure in the moving degree, which causes the failure of starting.
In practical application, the condition that the engine satisfies the in-cylinder air supplement condition can be as follows: the load of the engine in the running state is suddenly increased, and the air pressure of the main air passage is greater than the preset air supplementing air pressure value.
It should be noted that the sudden increase in engine load may be: the rate of increase of the load of the engine per unit time exceeds a preset value. The specific value of the preset value can be determined according to specific application environment and user requirements, and the application is not particularly limited and is within the protection scope of the application.
If the engine is a marine engine, when the engine is started and then is arranged in parallel and the control system judges that the load of the engine is suddenly increased within a certain time, the reaction of the supercharger is delayed, the air inflow is insufficient, the power is insufficient, black smoke is emitted, and the condition of air supplement in a cylinder can be met.
It should be noted that the starting condition principle is similar, and the specific value of the preset air supplement pressure value can also be determined according to the specific type of the engine and the user's requirements. If the engine is assumed to be a large marine engine, the preset air supply pressure value may be set to 20bar, which is not limited to this, and may also be determined according to the specific application environment and the user's requirements, and all belong to the protection scope of the present application.
It should be further noted that the purpose of setting the air pressure of the main air duct to be greater than the preset air supply air pressure value is to enable the air pressure of the main air duct to have an emergency stop function at the same time, so as to avoid the occurrence of the situation that the vehicle cannot be stopped in an emergency due to insufficient air pressure of the main air duct. Of course, if the air pressure of the main air passage is greater than the preset air supply air pressure value, the low pressure can be eliminated in the moving degree, and the failure that air cannot be supplied is caused.
And S102, if the engine meets the starting condition, controlling the starting electromagnetic valve to be opened.
In practical application, if the engine meets the starting condition, the air pressure of the main air passage of the engine is larger than the preset air inlet air pressure value, the starting electromagnetic valve can be controlled to be opened, and the air decompressed by the starting decompressor is sent to the air distributor.
In practical applications, after controlling the starting solenoid valve to open, the method may further include step S200:
and S200, controlling a target cylinder cover air valve in the engine system to be opened according to a preset starting air inlet phase, so that the air distributor supplies air to the cylinder through the target cylinder cover air valve.
It should be noted that, in the process of cylinder air-intake and cylinder air-supplement, the air entering the cylinders may be in the firing order, but the phases of the air entering the cylinders are different. The preset intake phase may be a preset power stroke period. Specifically, as shown in fig. 3, in order to ensure a good intake effect, the starting phase may be set in the power stroke.
With reference to fig. 1, when the engine system sends a start signal, the start solenoid valve is opened, the low-pressure air pushes the main start valve to open, and the high-pressure control enters the main air passage; meanwhile, low-pressure air (generally 6-10bar) decompressed by the starting pressure reducing valve enters an air distributor, the air distributor sequentially leads the air in the air distributor into corresponding cylinder cover air valves according to a firing sequence and a starting phase, and high-pressure air in a main air passage sequentially enters the air cylinders according to the opening sequence and the starting time of the cylinder cover air valves to push the pistons to move so as to finish the starting of the engine.
And S104, if the engine meets the in-cylinder air supplement condition, controlling the air supplement electromagnetic valve to be opened.
In practical application, if the engine meets the in-cylinder air supplement condition, the air pressure of the main air passage of the engine is larger than a preset air supplement air pressure value, the air supplement electromagnetic valve can be controlled to be opened, and air decompressed by the air supplement pressure reducing valve is sent to the air distributor.
In practical applications, after the air make-up control solenoid valve is opened, the method may further include step S300:
and S300, controlling a target cylinder cover air valve in the engine to be opened according to a preset air supplementing phase, so that the air distributor supplies air to the cylinder through the target cylinder cover air valve.
It should be noted that, in the process of cylinder air-intake and cylinder air-supplement, the air entering the cylinders may be in the firing order, but the phases of the air entering the cylinders are different. The preset charge phase may be a preset intake stroke period.
Specifically, as shown in fig. 3, in order to ensure a better air supply effect, the air supply phase may be set in the intake stroke (before the bottom dead center and after the exhaust valve is closed), and the closing position may be set in the beginning of the compression stroke (after the bottom dead center and before the intake valve is closed). At the moment, the exhaust valve is just closed, the fresh air in the cylinder is less, the air pressure is low, and the valve is favorable for opening the air supplementing valve to supplement air to enter the cylinder; at the middle and rear sections of the compression stroke, the air in the cylinder is compressed and is high, and if the air replenishing valve is continuously opened at the moment, the air can be caused to flow backwards.
Referring to fig. 1, when the engine meets the air supplement condition, the air supplement electromagnetic valve is opened, low-pressure air (generally 3-4bar) decompressed by the air supplement pressure reducing valve enters the air distributor, and the air valve of the cylinder cover is partially opened to complete air supplement.
Based on the principle, the air control method provided by the embodiment can be applied to a controller in an engine system, wherein an air distributor in the engine system is connected to a main air passage through a starting air inlet branch and a gas supplementing air inlet branch respectively; the starting air inlet branch comprises a starting pressure reducing valve and a starting electromagnetic valve; the method comprises the steps that after whether an engine meets a starting condition or an in-cylinder air supply condition is determined respectively, and if the starting condition is met, the starting electromagnetic valve is controlled to be opened; if the in-cylinder air supplement condition is met, the air supplement electromagnetic valve is controlled to be opened, the starting air supplement and in-cylinder air supplement functions are realized by setting a control program and adding a controllable electromagnetic valve by utilizing the characteristics of different and complementary intersection of starting air supplement and air supplement in the engine cylinder, and the problem that the related scheme can only control the air intake in the engine cylinder and cannot control the air supplement in the engine cylinder in the operation process is solved.
In addition, the air inlet and the air supplement can be realized in the cylinder only by arranging the corresponding air inlet branch in the engine system, the number of parts is reduced, the workload of design and assembly of the engine system is reduced, the functions of starting air inlet and air supplement in the cylinder can be realized simultaneously by using one set of system, and the integration level is higher. In addition, control is directly sprayed into the cylinder for starting air intake and air supplement in the cylinder, the starting air intake and air supplement are changed rapidly, and the starting performance and the sudden load response performance of the engine are improved.
Alternatively, in another embodiment provided by the present application, as shown in fig. 1, the starting intake branch further includes: the starting pressure test valve (the pressure test valve 1 in the figure) is used for testing the air pressure output by the starting pressure reducing valve, and the air control method can also comprise steps S400 to S404 before the starting electromagnetic valve is controlled to be opened in the step S102, please refer to FIG. 4.
And S400, acquiring an intake air pressure value measured by the starting pressure test valve.
S402, judging whether the intake air pressure value meets the preset intake pressure requirement or not.
In practical application, the preset intake pressure requirement can be determined according to specific application environment and user requirements. For example, when the engine is a large marine engine, starting the pressure relief valve requires reducing the air pressure to between 6-10 bar.
If the intake air pressure value is determined not to satisfy the preset intake pressure requirement, step S404 is executed. And if the value of the intake air pressure is judged to meet the preset intake pressure requirement, executing a step of controlling the starting electromagnetic valve to be opened, namely executing the step S102.
And S404, giving an alarm for prompting a user to start the abnormal air pressure.
It should be noted that, when it is determined that the intake air pressure value does not meet the preset intake pressure requirement, it may be determined that the starting air pressure is abnormal, and an alarm signal needs to be sent to prompt the user.
Optionally, in another embodiment provided by the present application, as shown in fig. 1, the make-up air intake branch further includes: before the air supply pressure test valve (the pressure test valve 2 in the figure) is used for testing the air pressure output by the air supply pressure reducing valve, the air control method controls the air supply electromagnetic valve to open in step S104, please refer to fig. 5, and may further include steps S500 to S504.
S500, acquiring a gas supplementing air pressure value measured by the gas supplementing pressure test valve.
S502, judging whether the air supplementing pressure value meets the preset air supplementing pressure requirement or not.
In practical application, the requirement of the preset air supply pressure can also be determined according to the specific application environment and the user requirement. For example, when the engine is a large marine engine, the make-up air pressure relief valve needs to reduce the air pressure to between 3-4 bar.
If the air supply pressure value is judged not to meet the preset air supply pressure requirement, executing step S504; and if the air replenishing pressure value meets the preset air replenishing pressure requirement, executing the step of controlling the air replenishing electromagnetic valve to be opened, namely executing the step S104.
S504, sending an alarm for prompting the user that the air replenishing pressure is abnormal;
it should be noted that, when it is determined that the air supply pressure value does not meet the preset air supply pressure requirement, it may be determined that the air supply pressure is abnormal, and an alarm signal needs to be sent to prompt the user.
Optionally, in another embodiment provided by the present application, after the start solenoid valve is controlled to be opened in step S102, referring to fig. 6, steps S600 to S604 may be further included:
and S600, judging whether the rotating speed of the engine reaches a preset ignition rotating speed or not.
In practical application, the preset ignition rotating speed can be determined according to specific application environments and user requirements, and different engines are different in corresponding preset ignition rotating speed.
If the rotating speed of the engine is judged to reach the preset ignition rotating speed, executing a step S602; if it is determined that the engine rotation speed does not reach the preset ignition rotation speed, step S604 is performed.
And S602, judging that the engine is started successfully.
In practical application, if the rotating speed of the engine is judged to reach the preset ignition rotating speed, the successful starting of the engine can be indicated. After the engine is started successfully, the starting electromagnetic valve and the main starting valve can be closed, the main air path is stopped, and the air valve of the cylinder cover is closed.
And S604, giving an alarm for prompting the user that the engine is abnormally started.
In practical application, if the rotating speed of the engine is judged not to reach the preset ignition rotating speed, the abnormal starting of the engine can be indicated, and warning information needs to be sent out to prompt a user.
Based on the air control method provided by the above embodiment, with reference to fig. 7, the following implementation processes are specifically performed for the starting intake air of the present invention:
1: after the engine starting control is pressed, firstly, judging whether the engine is started or not; and if the engine is judged to be started, executing the step 2.
2: judging whether the air pressure of the main air path meets the requirement or not; if the main air path air pressure is judged to meet the requirement, executing the step 3; and if the main air circuit air pressure is judged not to meet the requirement, alarming that the main air circuit air pressure is abnormal.
3: judging whether the starting air pressure meets the requirement or not; if the starting air pressure is judged to meet the requirement, executing the step 4; if the starting air pressure is judged not to meet the requirement, the alarm of 'starting air pressure is abnormal'.
4: the starting solenoid valve opens.
5: whether the engine reaches the ignition rotating speed or not; if the engine is judged to reach the ignition rotating speed, the engine is successfully started; if the engine does not reach the ignition rotating speed, an alarm of 'abnormal engine starting' is given.
The cylinder air supplement of the invention has the following implementation processes:
a: judging whether the air supplement condition is achieved; if the air supplement condition is judged to be met, executing the step B; if the air supplement condition is judged not to be met, the air supplement function of the engine is judged not to be started.
B: whether the air pressure for supplementing air meets the requirement or not; if the air supply pressure is judged to meet the requirement, executing the step C; if the air supplement pressure is judged not to meet the requirement, the alarm is given to 'abnormal air supplement pressure'.
C: and opening the air replenishing electromagnetic valve.
Features described in the embodiments in the present specification may be replaced with or combined with each other, and the same and similar portions among the embodiments may be referred to each other, and each embodiment is described with emphasis on differences from other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. 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 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. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention 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.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. The air control method is characterized by being applied to a controller in an engine system, wherein an air distributor in the engine system is respectively connected to a main air passage through a starting air inlet branch and an air supplementing air inlet branch; the starting air inlet branch comprises a starting pressure reducing valve and a starting electromagnetic valve; the air supply inlet branch comprises: a gas supply pressure reducing valve and a gas supply electromagnetic valve; the method comprises the following steps:
respectively determining whether the engine meets a starting condition or an in-cylinder air supplement condition;
if the engine meets the starting condition, controlling the starting electromagnetic valve to be opened;
and if the engine meets the in-cylinder air supplement condition, controlling the air supplement electromagnetic valve to be opened.
2. The air control method according to claim 1, further comprising, after controlling the start solenoid valve to open:
and controlling a target cylinder cover air valve in the engine system to be opened according to a preset starting air inlet phase, so that the air distributor supplies air to the cylinder through the target cylinder cover air valve.
3. The air control method of claim 2, wherein the preset starting intake phase is a preset power stroke period.
4. The air control method of claim 1, further comprising, after controlling the make-up air solenoid valve to open:
and controlling a target cylinder cover air valve in the engine to be opened according to a preset air supplementing phase so that the air distributor supplies air to the cylinder through the target cylinder cover air valve.
5. The air control method of claim 4, wherein the predetermined charge air phase is a predetermined intake stroke period.
6. The air control method according to claim 1, wherein the starting intake branch further includes: the starting pressure test valve is used for testing the air pressure output by the starting pressure reducing valve, and before the starting electromagnetic valve is controlled to be opened, the method further comprises the following steps:
acquiring an intake air pressure value measured by the starting pressure test valve;
judging whether the intake air pressure value meets a preset intake pressure requirement or not;
if the air inlet pressure value is judged not to meet the preset air inlet pressure requirement, sending an alarm for prompting a user to start the abnormal air pressure;
and if the air inlet pressure value meets the preset air inlet pressure requirement, executing the step of controlling the starting electromagnetic valve to be opened.
7. The air control method of claim 1, wherein the make-up air intake branch further comprises: the air supply pressure test valve is used for testing the air pressure output by the air supply pressure reducing valve; before controlling the air make-up solenoid valve to be opened, the method further comprises the following steps:
acquiring a gas supplementing air pressure value measured by the gas supplementing pressure test valve;
judging whether the air supplementing pressure value meets the preset air supplementing pressure requirement or not;
if the air supplementing pressure value is judged not to meet the preset air supplementing pressure requirement, an alarm is sent out and used for prompting a user that the air supplementing pressure is abnormal;
and if the air supplementing pressure value is judged to meet the preset air supplementing pressure requirement, executing the step of controlling the air supplementing electromagnetic valve to be opened.
8. The air control method according to claim 1, further comprising, after controlling the start solenoid valve to open:
judging whether the rotating speed of the engine reaches a preset ignition rotating speed or not;
if the rotating speed of the engine is judged to reach the preset ignition rotating speed, the engine is judged to be started successfully;
and if the rotating speed of the engine is judged not to reach the preset ignition rotating speed, giving an alarm for prompting a user that the engine is abnormally started.
9. The air control method according to any one of claims 1 to 8, wherein the engine satisfying the start condition includes: the engine is switched from a static state to a starting state, and the air pressure of the main air passage is larger than a preset air inlet air pressure value.
10. The air control method of any of claims 1-8, wherein the engine satisfying the in-cylinder make-up condition comprises: and the load of the engine is suddenly increased in the running state, and the air pressure of the main air passage is greater than a preset air supplementing air pressure value.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163346A (en) * | 2022-05-20 | 2022-10-11 | 潍柴动力股份有限公司 | Air supplementing method, device and equipment for engine cylinder and storage medium |
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| CN115163346B (en) * | 2022-05-20 | 2024-04-16 | 潍柴动力股份有限公司 | Air supplementing method, device and equipment for engine cylinder and storage medium |
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