CN112392613B - Starting method and starting system of gas engine - Google Patents
Starting method and starting system of gas engine Download PDFInfo
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- CN112392613B CN112392613B CN202011295703.3A CN202011295703A CN112392613B CN 112392613 B CN112392613 B CN 112392613B CN 202011295703 A CN202011295703 A CN 202011295703A CN 112392613 B CN112392613 B CN 112392613B
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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
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
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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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Combustion & Propulsion (AREA)
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- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The method comprises starting a gas engine according to a crankshaft signal when a camshaft signal of the gas engine is lost, acquiring an actuator electrical interference signal of a currently started cylinder chamber of the gas engine and a detonation signal waveform of the currently started cylinder chamber in the starting process, acquiring an actual ignition signal of the currently started cylinder chamber of the gas engine according to the actuator electrical interference signal, judging whether the currently started cylinder chamber of the gas engine is correctly started according to the detonation signal waveform and the actual ignition signal, and adjusting the crankshaft signal of the gas engine when the currently started cylinder chamber of the gas engine is not correctly started so as to enable the currently started cylinder chamber to be normally started in a next starting period or a next starting cylinder chamber of the gas engine, the problem of unable normal start when the camshaft signal of gas engine is lost is solved.
Description
Technical Field
The present disclosure relates to vehicle engineering technologies, and more particularly, to a starting method and a starting system for a gas engine.
Background
During ignition of an electronically controlled engine system, it is often necessary to know the operating conditions of each cylinder chamber in order to determine the injection or ignition timing.
During the starting process of the traditional engine, a camshaft sensor is required to acquire a camshaft signal of a cylinder chamber and further determine the working state of the cylinder chamber, so the camshaft sensor is also called as a cylinder identification sensor.
However, when the camshaft sensor fails during the application process, the engine cannot be started normally.
Disclosure of Invention
In order to solve the technical problem, the application provides a starting method and a starting system of a gas engine so as to solve the problem that the gas engine cannot be normally started when a camshaft signal of the engine is lost.
In order to achieve the technical purpose, the embodiment of the application provides the following technical scheme:
a gas engine starting method for controlling gas engine starting when a camshaft signal of a gas engine is lost, the gas engine starting method comprising:
when the gas engine is started according to a crankshaft signal, acquiring an actuator electrical interference signal of a current starting cylinder chamber of the gas engine and a knock signal waveform of the current starting cylinder chamber;
Acquiring an actual ignition signal of a current starting cylinder chamber of the gas engine according to the electric interference signal of the actuator;
and judging whether the current starting cylinder chamber of the gas engine is correctly started or not according to the detonation signal waveform and the actual ignition signal, and if not, adjusting a crankshaft signal of the gas engine.
Optionally, the determining whether the currently started cylinder chamber of the gas engine is started correctly according to the knock signal waveform and the actual ignition signal comprises:
and judging whether the angle of the actual ignition signal is advanced to the angle of the knock signal waveform by a preset angle threshold value or not, if so, judging that the current starting cylinder chamber of the gas engine is normally started, and if not, judging that the current starting cylinder chamber of the gas engine is abnormally started.
Optionally, the value range of the preset angle threshold is 0-40 °.
Optionally, the adjusting the crank signal of the gas engine comprises:
angularly offsetting a crankshaft signal of the gas engine by 360 °.
Optionally, after adjusting the crank signal angle of the gas engine, the method further includes:
and taking the adjusted crankshaft signal of the gas engine as the crankshaft signal of the next starting period of the current starting cylinder chamber of the gas engine or the crankshaft signal of the current starting period of the next starting cylinder chamber of the gas engine.
A gas engine starting system for controlling gas engine starting when a camshaft signal of a gas engine is lost, the gas engine starting system comprising:
the signal acquisition module is used for acquiring an actuator electrical interference signal of a current starting cylinder chamber of the gas engine and a knock signal waveform of the current starting cylinder chamber when the gas engine is started according to a crankshaft signal;
the ignition signal module is used for acquiring an actual ignition signal of a current starting cylinder chamber of the gas engine according to the electric interference signal of the actuator;
and the signal adjusting module is used for judging whether the current starting cylinder chamber of the gas engine is correctly started or not according to the knock signal waveform and the actual ignition signal, and if not, adjusting a crankshaft signal of the gas engine.
Optionally, the process of determining, by the signal adjustment module, whether the currently started cylinder chamber of the gas engine is correctly started according to the knock signal waveform and the actual ignition signal specifically includes:
and judging whether the angle of the actual ignition signal is advanced to the angle of the knock signal waveform by a preset angle threshold value or not, if so, judging that the current starting cylinder chamber of the gas engine is normally started, and if not, judging that the current starting cylinder chamber of the gas engine is abnormally started.
Optionally, the value range of the preset angle threshold is 0-40 °.
Optionally, the process of adjusting the crankshaft signal of the gas engine by the signal adjusting module specifically includes:
offsetting an angle of a crankshaft signal of the gas engine by 360 °.
Optionally, the signal adjusting module is further configured to, after adjusting the crank signal angle of the gas engine, use the adjusted crank signal of the gas engine as a crank signal at a next starting period of a currently starting cylinder chamber of the gas engine or as a crank signal at a current starting period of a next starting cylinder chamber of the gas engine.
It can be seen from the foregoing technical solutions that the present application provides a starting method and a starting system for a gas engine, where the starting method for the gas engine starts the gas engine according to a crankshaft signal when a camshaft signal of the gas engine is lost, obtains an actuator electrical interference signal of a currently started cylinder chamber of the gas engine and a knock signal waveform of the currently started cylinder chamber during starting, then obtains an actual ignition signal of the currently started cylinder chamber of the gas engine according to the actuator electrical interference signal, finally determines whether the currently started cylinder chamber of the gas engine is correctly started according to the knock signal waveform and the actual ignition signal, and adjusts the crankshaft signal of the gas engine when the currently started cylinder chamber of the gas engine is not correctly started, the starting cylinder chamber can be normally started in the next starting period or the next starting cylinder chamber of the gas engine, and the problem that the gas engine cannot be normally started when a camshaft signal of the gas engine is lost is solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic flow chart diagram illustrating a method for starting a gas engine according to an exemplary embodiment of the present disclosure;
FIG. 2 is a schematic flow chart diagram illustrating a method for starting a gas engine according to another exemplary embodiment of the present disclosure;
FIG. 3 is a schematic flow chart diagram illustrating a method for starting a gas engine according to yet another embodiment of the present application;
FIG. 4 is a schematic flow chart diagram illustrating a method for starting a gas engine according to yet another embodiment of the present application;
fig. 5 is a schematic structural diagram of a starting system of a gas engine according to an embodiment of the present application.
Detailed Description
As described in the background art, when a camshaft sensor of an engine fails, a camshaft signal cannot be obtained during the starting process of the engine, and the engine cannot be normally started.
In order to solve this problem, researchers have provided a piezoresistive cylinder pressure sensor in an engine, which can directly detect the pressure state in the cylinder of the engine, and there is a certain correlation between the change of the pressure state in the cylinder and the phase of the crankshaft. Based on the sensor, the cylinder judging function of the engine can be realized under the condition of no camshaft sensor or crankshaft sensor, the rotating speed of the engine can be calculated through the change of cylinder pressure through digital calculation, the operation of the engine under the condition of no camshaft is realized, and the system reliability is increased through redundancy design.
The principle is as follows: when a certain cylinder of the engine is in a compression stroke, the volume of the cylinder is continuously reduced along with the operation of the piston from a bottom dead center to a top dead center, and the cylinder pressure is increased along with the reduction of the volume of the cylinder according to an ideal gas state equation under the condition that the total gas quantity is basically unchanged; when the engine is in the exhaust stroke, the pressure in the cylinder is at a lower level and does not change greatly, and when the engine is in the power stroke, the pressure changes rapidly and takes a curve of steep rising and falling. Based on the difference of cylinder pressures, cylinder judgment and rotating speed calculation of the engine can be realized, so that reference signals can be provided for oil injection and ignition control, and a 'limping home' function is realized under the fault state of a crankshaft and a camshaft of the engine.
However, this solution requires an additional piezoresistive cylinder pressure sensor in addition to the camshaft sensor, and the hardware is increased, which may result in increased complexity and cost of the system.
In view of the above, an embodiment of the present application provides a starting method of a gas engine for controlling a gas engine to start when a camshaft signal of the gas engine is lost, the starting method of the gas engine including:
when the gas engine is started according to a crankshaft signal, acquiring an actuator electrical interference signal of a currently started cylinder chamber of the gas engine and a knock signal waveform of the currently started cylinder chamber;
acquiring an actual ignition signal of a current starting cylinder chamber of the gas engine according to the electric interference signal of the actuator;
and judging whether the current starting cylinder chamber of the gas engine is correctly started or not according to the knock signal waveform and the actual ignition signal, and if not, adjusting a crankshaft signal of the gas engine.
And correspondingly, a starting system of the gas engine, which is used for controlling the gas engine to start when a camshaft signal of the gas engine is lost, the starting system of the gas engine comprises:
The signal acquisition module is used for acquiring an actuator electrical interference signal of a currently started cylinder chamber of the gas engine and a knock signal waveform of the currently started cylinder chamber when the gas engine is started according to a crankshaft signal;
the ignition signal module is used for acquiring an actual ignition signal of a current starting cylinder chamber of the gas engine according to the electric interference signal of the actuator;
and the signal adjusting module is used for judging whether the current starting cylinder chamber of the gas engine is correctly started or not according to the knock signal waveform and the actual ignition signal, and if not, adjusting a crankshaft signal of the gas engine.
The starting method of the gas engine enables the gas engine to be started according to the crankshaft signal when the camshaft signal of the gas engine is lost, acquiring an actuator electrical interference signal of a currently started cylinder chamber of the gas engine and a knock signal waveform of the currently started cylinder chamber during starting, then obtaining an actual ignition signal of the current starting cylinder chamber of the gas engine according to the electric interference signal of the actuator, finally judging whether the current starting cylinder chamber of the gas engine is started correctly according to the waveform of the knock signal and the actual ignition signal, and adjusting a crank signal of said gas engine when a currently starting cylinder chamber of said gas engine is not started correctly, therefore, the current starting cylinder chamber can be normally started in the next starting period or the next starting cylinder chamber of the gas engine, and the problem that the gas engine cannot be normally started when a camshaft signal of the gas engine is lost is solved.
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The embodiment of the application provides a starting method of a gas engine, as shown in fig. 1, for controlling the gas engine to start when a camshaft signal of the gas engine is lost, and the starting method of the gas engine comprises the following steps:
s101: when the gas engine is started according to the crankshaft signal, acquiring an actuator electrical interference signal of a currently started cylinder chamber of the gas engine and a knock signal waveform of the currently started cylinder chamber.
S102: and acquiring an actual ignition signal of a current starting cylinder chamber of the gas engine according to the actuator electrical interference signal.
S103: and judging whether the current starting cylinder chamber of the gas engine is correctly started or not according to the knock signal waveform and the actual ignition signal, and if not, adjusting a crankshaft signal of the gas engine.
In step S101, the start of the gas engine by the crank signal may be a process of starting the whole gas engine from a stopped state, or a process of starting each cylinder chamber in each cycle while the gas engine is running.
In addition, in step S101, the process of acquiring the actuator electrical interference signal of the currently started cylinder chamber of the gas engine and the knock signal waveform of the currently started cylinder chamber may both be performed by a knock sensor provided in the gas engine. In some gas engines, where each cylinder chamber is equipped with a knock sensor, the signal may be obtained by the knock sensor of each cylinder chamber. In some gas engines, in order to save the number of knock sensors, two or more cylinder chambers may be equipped with one knock sensor, and in this case, one knock sensor obtains the actuator electrical interference signals of two or more cylinder chambers and the knock signal waveform of the currently started cylinder chamber, and the obtained signals may be in one-to-one correspondence with the respective cylinder chambers according to the starting sequence of the respective cylinder chambers of the gas engine and the obtaining sequence of the signals, for example, when the cylinder chamber 1 is started first, the actuator electrical interference signal and the knock signal waveform obtained first by the knock sensor correspond to the cylinder chamber 1, that is, the actuator electrical interference signal and the knock signal waveform of the cylinder chamber 1.
In step S102, after acquiring the actuator electrical interference signal of a certain cylinder chamber, the ignition signal may be determined according to the frequency, amplitude and time of the actuator electrical interference signal. And when the frequency of the electric interference signal of the actuator is 5-10 kHz, the amplitude is 0.25-0.4V, the duration is kept between 0.8ms and 0.9ms, and the voltage peak value of the knock sensor is kept between 0 and 40 degrees or between 320 and 360 degrees of crank angle deviation, judging the interference of the ignition coil during operation.
In another embodiment of the present application, based on the above embodiment, as shown in fig. 2, the starting method of the gas engine includes:
s201: when the gas engine is started according to a crankshaft signal, acquiring an actuator electrical interference signal of a currently started cylinder chamber of the gas engine and a knock signal waveform of the currently started cylinder chamber;
s202: acquiring an actual ignition signal of a current starting cylinder chamber of the gas engine according to the electric interference signal of the actuator;
s203: and judging whether the angle of the actual ignition signal is advanced to the angle of the knock signal waveform by a preset angle threshold value or not, if so, judging that the current starting cylinder chamber of the gas engine is normally started, otherwise, judging that the current starting cylinder chamber of the gas engine is abnormally started, and adjusting a crankshaft signal of the gas engine.
When only a crankshaft signal is available, the ECU of the gas engine can calculate the current engine speed, and after the engine speed is calculated, the time ta required by the current starting cylinder chamber 1 rotation of the engine can be obtained according to the engine speed, the internal logic of the ECU is performed according to the time, the time T1 of the ignition signal, the generation time T2 of the knock signal waveform, and the time difference tb obtained from T2-T1 are recorded, the angle corresponding to tb is tb/ta × 360 °, and the angle corresponding to tb is the angle value at which the angle of the actual ignition signal is compared with the angle of the knock signal waveform, and when the judgment is made, tb/ta × 360 ° (i.e. the angle of the actual ignition signal is compared with the angle of the knock signal waveform) is compared with the preset angle threshold.
In the present embodiment, step S203 is executed to determine whether the currently activated cylinder chamber of the gas engine is properly activated, specifically, based on the knock signal waveform and the actual ignition signal. The angle of the actual ignition signal may also be referred to as an ignition angle or an ignition advance angle, and generally, when a certain cylinder chamber is ignited (started), the angle of the ignition signal of the cylinder chamber is generally earlier than the angle of the waveform of the knock signal, but the difference between the angles is not too large, and optionally, the value range of the preset angle threshold is 0 to 40 °.
In another embodiment of the present application, based on the above embodiment, as shown in fig. 3, the starting method of the gas engine includes:
s301: when the gas engine is started according to a crankshaft signal, acquiring an actuator electrical interference signal of a currently started cylinder chamber of the gas engine and a knock signal waveform of the currently started cylinder chamber;
s302: acquiring an actual ignition signal of a current starting cylinder chamber of the gas engine according to the electric interference signal of the actuator;
s303: and judging whether the angle of the actual ignition signal is advanced by a preset angle threshold value compared with the angle of the knock signal waveform, if so, judging that the currently started cylinder chamber of the gas engine is normally started, otherwise, judging that the currently started cylinder chamber of the gas engine is abnormally started, and shifting the angle of a crankshaft signal of the gas engine by 360 degrees.
In this embodiment, step S303 provides a practical way to adjust the crank signal of the gas engine, because only the crank signal is used at the time of starting, the rotational speed phase determined by the gas engine according to the crank signal is either correct or deviated by 360 °, so that when the starting is abnormal, the angle of the crank signal of the gas engine is deviated by 360 ° to ensure the successful next ignition.
In another embodiment of the present application, based on the above embodiment, as shown in fig. 4, the starting method of the gas engine includes:
s401: when the gas engine is started according to a crankshaft signal, acquiring an actuator electrical interference signal of a current starting cylinder chamber of the gas engine and a knock signal waveform of the current starting cylinder chamber;
s402: acquiring an actual ignition signal of a current starting cylinder chamber of the gas engine according to the electric interference signal of the actuator;
s403: and judging whether the angle of the actual ignition signal is ahead of the angle of the knock signal waveform by a preset angle threshold value or not, if so, judging that the current starting cylinder chamber of the gas engine is normally started, otherwise, judging that the current starting cylinder chamber of the gas engine is abnormally started, deviating the angle of the crankshaft signal of the gas engine by 360 degrees, and using the adjusted crankshaft signal of the gas engine as the crankshaft signal of the gas engine in the next starting cycle of the current starting cylinder chamber of the gas engine or as the crankshaft signal of the next starting cylinder chamber of the gas engine in the current starting cycle.
In this embodiment, after determining that the current starting cylinder chamber of the gas engine is abnormally started and adjusting the crank signal angle of the gas engine, the adjusted crank signal of the gas engine is used as the crank signal in the next starting period of the current starting cylinder chamber of the gas engine or as the crank signal in the current starting period of the next starting cylinder chamber of the gas engine to correct the quick determination phase for the starting process of the next starting cylinder chamber of the gas engine, so as to ensure that the next starting cylinder chamber of the starting engine can be normally started, or correct the quick determination phase for the starting process of the next starting period of the current starting cylinder chamber of the gas engine, so as to ensure that the next starting period of the current starting cylinder chamber of the gas engine can be normally started.
The following describes a starting system of a gas engine provided in an embodiment of the present application, and the following described starting system of a gas engine and the above described starting method of a gas engine may be referred to in correspondence with each other.
Accordingly, an embodiment of the present application provides a starting system of a gas engine, as shown in fig. 5, for controlling the gas engine to start when a camshaft signal of the gas engine is lost, the starting system of the gas engine including:
the signal acquisition module 100 is configured to acquire an actuator electrical interference signal of a currently started cylinder chamber of the gas engine and a knock signal waveform of the currently started cylinder chamber when the gas engine is started according to a crankshaft signal;
the ignition signal module 200 is used for acquiring an actual ignition signal of a current starting cylinder chamber of the gas engine according to the actuator electrical interference signal;
and the signal adjusting module 300 is configured to determine whether the currently started cylinder chamber of the gas engine is correctly started according to the knock signal waveform and the actual ignition signal, and if not, adjust a crankshaft signal of the gas engine.
In the signal obtaining module 100, the starting of the gas engine according to the crank signal may refer to a process of starting the whole gas engine from a stopped state, or may refer to a starting process of each cylinder chamber in each cycle during the operation of the gas engine.
In addition, in the signal obtaining module 100, the process of obtaining the actuator electrical interference signal of the currently started cylinder chamber of the gas engine and the knock signal waveform of the currently started cylinder chamber may be both performed by a knock sensor provided in the gas engine. In some gas engines, where each cylinder chamber is equipped with a knock sensor, the signal may be obtained by the knock sensor of each cylinder chamber. In some gas engines, in order to save the number of knock sensors, two or more cylinder chambers may be equipped with one knock sensor, and in this case, one knock sensor obtains the actuator electrical interference signals of two or more cylinder chambers and the knock signal waveform of the currently started cylinder chamber, and the obtained signals may be in one-to-one correspondence with the respective cylinder chambers according to the starting sequence of the respective cylinder chambers of the gas engine and the obtaining sequence of the signals, for example, when the cylinder chamber 1 is started first, the actuator electrical interference signal and the knock signal waveform obtained first by the knock sensor correspond to the cylinder chamber 1, that is, the actuator electrical interference signal and the knock signal waveform of the cylinder chamber 1.
In the ignition signal module 200, after the actuator electrical interference signal of a certain cylinder chamber is acquired, the ignition signal can be judged according to the frequency, the amplitude and the time of the actuator electrical interference signal. And when the frequency of the electric interference signal of the actuator is 5-10 kHz, the amplitude is 0.25-0.4V, the duration is kept between 0.8ms and 0.9ms, and the voltage peak value of the knock sensor is kept between 0 degree and 40 degrees or between 320 degrees and 360 degrees of crank angle deviation, the interference of the ignition coil during operation is judged.
On the basis of the above embodiment, in another embodiment of the present application, the process of determining whether the currently activated cylinder chamber of the gas engine is correctly activated according to the knock signal waveform and the actual ignition signal by the signal adjusting module 300 specifically includes:
and judging whether the angle of the actual ignition signal is advanced by a preset angle threshold value compared with the angle of the knock signal waveform, if so, judging that the currently started cylinder chamber of the gas engine is normally started, and if not, judging that the currently started cylinder chamber of the gas engine is abnormally started.
In the present embodiment, an execution manner is given to determine whether or not the currently activated cylinder chamber of the gas engine is properly activated, specifically, based on the knock signal waveform and the actual ignition signal. The angle of the actual ignition signal may also be referred to as an ignition angle or an ignition advance angle, and generally, when a certain cylinder chamber is ignited (started), the angle of the ignition signal of the cylinder chamber is generally earlier than the angle of the waveform of the knock signal, but the difference between the angles is not too large, and optionally, the value range of the preset angle threshold is 0 to 40 °.
Based on the above embodiments, in another embodiment of the present application, the process of the signal adjusting module 300 adjusting the crankshaft signal of the gas engine specifically comprises:
angularly offsetting a crankshaft signal of the gas engine by 360 °.
In the present embodiment, a practical way of adjusting the crank signal of the gas engine is provided, because only the crank signal is provided at the time of starting, the rotational speed phase determined by the gas engine according to the crank signal is either correct or deviated by 360 °, therefore, when starting is abnormal, the angle of the crank signal of the gas engine is deviated by 360 ° to ensure the successful ignition next time.
On the basis of the above embodiment, in a further embodiment of the present application, the signal adjusting module 300 is further configured to, after adjusting the crank signal angle of the gas engine, use the adjusted crank signal of the gas engine as the crank signal at the next starting cycle of the currently starting cylinder chamber of the gas engine or as the crank signal at the current starting cycle of the next starting cylinder chamber of the gas engine.
In this embodiment, after determining that the current starting cylinder chamber of the gas engine is abnormally started and adjusting the crank signal angle of the gas engine, the adjusted crank signal of the gas engine is used as the crank signal in the next starting period of the current starting cylinder chamber of the gas engine or as the crank signal in the current starting period of the next starting cylinder chamber of the gas engine to correct the quick determination phase for the starting process of the next starting cylinder chamber of the gas engine, so as to ensure that the next starting cylinder chamber of the starting engine can be normally started, or correct the quick determination phase for the starting process of the next starting period of the current starting cylinder chamber of the gas engine, so as to ensure that the next starting period of the current starting cylinder chamber of the gas engine can be normally started.
In summary, the present application provides a starting method and a starting system for a gas engine, wherein the starting method for the gas engine starts the gas engine according to a crankshaft signal when a camshaft signal of the gas engine is lost, acquires an actuator electrical interference signal of a currently starting cylinder chamber of the gas engine and a knock signal waveform of the currently starting cylinder chamber during the starting process, then acquires an actual ignition signal of the currently starting cylinder chamber of the gas engine according to the actuator electrical interference signal, finally determines whether the currently starting cylinder chamber of the gas engine is started correctly according to the knock signal waveform and the actual ignition signal, and adjusts the crankshaft signal of the gas engine when the currently starting cylinder chamber of the gas engine is not started correctly, so that the currently starting cylinder chamber can be started normally in a next starting cycle or in a next starting cylinder chamber of the gas engine, the problem of unable normal start when the camshaft signal of gas engine is lost is solved.
Features described in the embodiments in the present specification may be replaced with or combined with each other, and each embodiment is described with emphasis on differences from other embodiments, and similar parts may be referred to each other between the embodiments.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. 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 application. Thus, the present application 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.
Claims (6)
1. A gas engine starting method for controlling a gas engine to start when a camshaft signal of the gas engine is lost, the gas engine starting method comprising:
when the gas engine is started according to a crankshaft signal, acquiring an actuator electrical interference signal of a current starting cylinder chamber of the gas engine and a knock signal waveform of the current starting cylinder chamber, and when the frequency of the actuator electrical interference signal is 5-10 kHz, the amplitude is 0.25-0.4V, the duration time is kept between 0.8ms and 0.9ms, and the voltage peak value of a knock sensor is kept between 0 degree and 40 degrees or between 320 degrees and 360 degrees of crankshaft angle deviation, judging the interference when an ignition coil works;
Acquiring an actual ignition signal of a current starting cylinder chamber of the gas engine according to the electric interference signal of the actuator;
judging whether the current starting cylinder chamber of the gas engine is correctly started or not according to the detonation signal waveform and the actual ignition signal, and if not, adjusting a crankshaft signal of the gas engine;
the judging whether the currently started cylinder chamber of the gas engine is started correctly according to the knock signal waveform and the actual ignition signal comprises the following steps:
judging whether the angle of the actual ignition signal is advanced to the angle of the knock signal waveform by a preset angle threshold value or not, if so, judging that the current starting cylinder chamber of the gas engine is normally started, and if not, judging that the current starting cylinder chamber of the gas engine is abnormally started;
the adjusting the crank signal of the gas engine comprises:
angularly offsetting a crankshaft signal of the gas engine by 360 °.
2. The gas engine starting method according to claim 1, wherein the preset angle threshold value is in a range of 0 to 40 °.
3. A starting method of a gas engine as recited in claim 1, further comprising after said adjusting a crank signal angle of said gas engine:
And taking the adjusted crankshaft signal of the gas engine as the crankshaft signal of the next starting period of the current starting cylinder chamber of the gas engine or the crankshaft signal of the current starting period of the next starting cylinder chamber of the gas engine.
4. A gas engine starting system for controlling a gas engine start when a camshaft signal of the gas engine is lost, the gas engine starting system comprising:
the device comprises a signal acquisition module, a signal processing module and a control module, wherein the signal acquisition module is used for acquiring an actuator electrical interference signal of a current starting cylinder chamber of the gas engine and a detonation signal waveform of the current starting cylinder chamber when the gas engine is started according to a crankshaft signal, and when the frequency of the actuator electrical interference signal is 5-10 kHz, the amplitude is 0.25-0.4V, the duration time is kept for 0.8-0.9 ms, and the voltage peak value of a detonation sensor is kept for 0-40 degrees or 320-360 degrees of crankshaft angle deviation, the interference generated when an ignition coil works is judged;
the ignition signal module is used for acquiring an actual ignition signal of a current starting cylinder chamber of the gas engine according to the electric interference signal of the actuator;
the signal adjusting module is used for judging whether a current starting cylinder chamber of the gas engine is started correctly or not according to the detonation signal waveform and the actual ignition signal, and if not, adjusting a crankshaft signal of the gas engine;
The process that the signal adjusting module judges whether the current starting cylinder chamber of the gas engine is correctly started or not according to the knock signal waveform and the actual ignition signal specifically comprises the following steps:
judging whether the angle of the actual ignition signal is advanced to the angle of the knock signal waveform by a preset angle threshold value or not, if so, judging that the current starting cylinder chamber of the gas engine is normally started, and if not, judging that the current starting cylinder chamber of the gas engine is abnormally started;
the process of the signal adjustment module adjusting the crankshaft signal of the gas engine specifically comprises:
offsetting an angle of a crankshaft signal of the gas engine by 360 °.
5. A gas engine starting system according to claim 4, characterized in that said preset angular threshold value ranges from 0 to 40 °.
6. A starting system for a gas engine according to claim 4, characterized in that said signal adjustment module, after adjusting the crank signal angle of the gas engine, is further adapted to use the adjusted crank signal of the gas engine as the crank signal at the next starting cycle of the currently starting cylinder chamber of the gas engine or as the crank signal of the current starting cycle of the next starting cylinder chamber of the gas engine.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06213057A (en) * | 1993-01-14 | 1994-08-02 | Fuji Heavy Ind Ltd | Engine crank position discriminating method |
| CN1413291A (en) * | 1999-11-24 | 2003-04-23 | 株式会社美姿把 | Starter, start control device, and crank angle detector of internal combustion engine |
| CN101476512A (en) * | 2007-11-06 | 2009-07-08 | 株式会社电装 | Internal combustion engine start control device |
| JP2013167223A (en) * | 2012-02-16 | 2013-08-29 | Toyota Motor Corp | Control device of internal combustion engine |
| CN107407226A (en) * | 2015-03-02 | 2017-11-28 | 日立汽车系统株式会社 | The apparatus for diagnosis of abnormality and method of rotatable phase detection means, the rotation position control device using them |
| CN107917006A (en) * | 2016-10-07 | 2018-04-17 | 现代自动车株式会社 | Startup control method for vehicle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020092499A1 (en) * | 2001-01-12 | 2002-07-18 | Kargilis John S. | Detonation sensing of crankshaft position |
| JP4050878B2 (en) * | 2001-06-20 | 2008-02-20 | 株式会社日立製作所 | Engine cylinder identification device |
| US7055372B2 (en) * | 2002-11-01 | 2006-06-06 | Visteon Global Technologies, Inc. | Method of detecting cylinder ID using in-cylinder ionization for spark detection following partial coil charging |
| US7142973B2 (en) * | 2004-06-11 | 2006-11-28 | Denso Corporation | Engine control apparatus designed to ensure accuracy in determining engine position |
-
2020
- 2020-11-18 CN CN202011295703.3A patent/CN112392613B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06213057A (en) * | 1993-01-14 | 1994-08-02 | Fuji Heavy Ind Ltd | Engine crank position discriminating method |
| CN1413291A (en) * | 1999-11-24 | 2003-04-23 | 株式会社美姿把 | Starter, start control device, and crank angle detector of internal combustion engine |
| CN101476512A (en) * | 2007-11-06 | 2009-07-08 | 株式会社电装 | Internal combustion engine start control device |
| JP2013167223A (en) * | 2012-02-16 | 2013-08-29 | Toyota Motor Corp | Control device of internal combustion engine |
| CN107407226A (en) * | 2015-03-02 | 2017-11-28 | 日立汽车系统株式会社 | The apparatus for diagnosis of abnormality and method of rotatable phase detection means, the rotation position control device using them |
| CN107917006A (en) * | 2016-10-07 | 2018-04-17 | 现代自动车株式会社 | Startup control method for vehicle |
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