CN114962043A - Speed regulation control device for diesel engine and ship - Google Patents
Speed regulation control device for diesel engine and ship Download PDFInfo
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- CN114962043A CN114962043A CN202111557786.3A CN202111557786A CN114962043A CN 114962043 A CN114962043 A CN 114962043A CN 202111557786 A CN202111557786 A CN 202111557786A CN 114962043 A CN114962043 A CN 114962043A
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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
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/007—Electric control of rotation speed controlling fuel supply
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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
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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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
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/06—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving electric generators
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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
- F02D41/08—Introducing corrections for particular operating conditions for idling
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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
- F02D41/10—Introducing corrections for particular operating conditions for acceleration
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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
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
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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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
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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
- F02D41/38—Controlling fuel injection of the high pressure type
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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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1409—Introducing closed-loop corrections characterised by the control or regulation method using at least a proportional, integral or derivative controller
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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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
- F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
- F02D2700/07—Automatic control systems according to one of the preceding groups in combination with control of the mechanism receiving the engine power
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention provides a speed regulation control device for a diesel engine, which comprises: a power generation mode setting element for setting a set rotation speed of the diesel engine in a power generation application mode in the form of point values; a first propulsion mode setting element for setting a set rotational speed of the diesel engine in a propulsion application mode in point values; a second propulsion mode setting element for setting the set rotational speed in the form of a continuous analog quantity; the control module is configured to perform: acquiring the current rotating speed of the diesel engine; acquiring a set rotating speed of the diesel engine from the power generation mode setting element and the first or second propulsion mode setting element; determining a target rotating speed according to the set rotating speed; and adjusting the rotating speed of the diesel engine according to the difference value of the target rotating speed and the current rotating speed. According to the diesel engine speed regulation control device, a plurality of sets of rotating speed setting input elements are set according to various application modes of the diesel engine, so that different use requirements of users are facilitated.
Description
Technical Field
The invention relates to the technical field of diesel engine control, in particular to a speed regulation control device for a marine diesel engine and a ship with the same.
Background
The working process control of the marine diesel engine is essentially adjustment control of the rotating speed of the diesel engine, namely, the target fuel injection quantity of each cycle is adjusted according to the deviation of the set rotating speed and the actual rotating speed of the diesel engine. Marine diesel engines are primarily useful in both power generation and propulsion applications, with differences in speed control requirements. When the diesel engine is used for power generation, the rotating speed of the diesel engine is generally required to be always close to the rated rotating speed, and the load changes along with the working condition; when the diesel engine is used for propulsion, the rotation speed and the load of the diesel engine are required to be changed within a certain range. In order to improve the applicability of the marine diesel engine, the requirements of the speed regulation control functions of the power generation and propulsion application modes need to be met at the same time.
Therefore, there is a need for a governor control apparatus for a diesel engine and a vessel that at least partially solves the above problems.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
A first aspect of the present invention provides a throttle control apparatus for a diesel engine configured to operate in a power generation application mode or a propulsion application mode, the throttle control apparatus comprising:
a power generation mode setting element for setting a set rotation speed of the diesel engine in the power generation application mode in point value form;
a first propulsion mode setting element for setting a set rotational speed of the diesel engine in the propulsion application mode in point value;
a second propulsion mode setting element for setting a set rotation speed of the diesel engine in a propulsion application mode in the form of a continuous analog quantity; and
a control module coupled with the power generation mode setting element, the first propulsion mode setting element, and the second propulsion mode setting element such that the control module obtains the set rotational speed,
wherein the control module is configured to perform the steps of:
s10, acquiring the current rotating speed of the diesel engine;
s20, acquiring the set rotating speed of the diesel engine, including:
obtaining a set rotation speed of the diesel engine in the power generation application mode from the power generation mode setting element, or
Obtaining a set rotational speed of the diesel engine in the propulsion application mode from the first propulsion mode setting element or the second propulsion mode setting element;
s30, determining a target rotating speed according to the set rotating speed;
and S40, adjusting the fuel injection quantity of the electronic control fuel injection system according to the difference value between the target rotating speed and the current rotating speed, thereby adjusting the rotating speed of the diesel engine.
According to the diesel engine speed regulation control device, a plurality of sets of rotating speed setting input elements are set according to various application modes of the diesel engine, so that different use requirements of users are facilitated. Meanwhile, the rotating speed set by a user in a plurality of application modes is processed to obtain a more appropriate target rotating speed, and the fuel injection quantity of the electric control fuel injection system is adjusted by adopting a negative feedback control method according to the deviation of the target rotating speed and the current actual rotating speed, so that the rotating speed of the diesel engine is adjusted, and the control process is safe and effective.
Optionally, the power generation mode setting element includes:
an idle rotation speed setting element that, when operated, sets the set rotation speed to a preset idle rotation speed; and
a rated rotation speed setting element that is set to a preset rated rotation speed when the rated rotation speed setting element is operated.
According to the diesel engine speed regulation control device, in the power generation application mode, a user can rapidly set the rotation speed of the diesel engine to the idle rotation speed or the rated rotation speed through the power generation mode setting element.
Optionally, the first propulsion mode setting element comprises:
an alignment rotational speed setting element that sets the set rotational speed to a preset alignment rotational speed when the alignment rotational speed setting element is operated; and
a slip rotation speed setting element that, when operated, sets the set rotation speed to a preset idle rotation speed.
According to the diesel engine speed regulation control device, in the propulsion application mode, a user can rapidly set the rotation speed of the diesel engine to the on-line rotation speed or the off-line rotation speed through the first propulsion mode setting element.
Optionally, further comprising an acceleration/deceleration setting element for setting the set speed in a manner of increasing or decreasing the current speed based on the current speed, the acceleration/deceleration setting element being coupled to the control module,
step S20 further includes: the control module obtains the set rotating speed from the acceleration and deceleration setting element.
According to the diesel engine speed regulation control device of the present invention, a user can set the set rotation speed through the acceleration/deceleration setting element.
Optionally, the throttle control is configured to enable the acceleration and deceleration setting element when the second propulsion mode setting element fails.
According to the diesel engine speed regulation control device, under the propulsion application mode, when the second recommended mode setting element fails, a user can set the rotating speed of the diesel engine through the acceleration and deceleration setting element, so that the performance of the diesel engine speed regulation control device is better.
Optionally, the acceleration/deceleration setting element is configured as a key, and the acceleration/deceleration setting element includes:
the acceleration key is used for setting the set rotating speed in a mode of increasing the current rotating speed on the basis of the current rotating speed; and
and the speed reduction key is used for setting the set rotating speed in a mode of reducing the current rotating speed on the basis of the current rotating speed.
Further, when the speed-up key is pressed:
if the time length T that the acceleration key is pressed is less than or equal to the preset pressing time length Tp, the set rotating speed is equal to the sum of the current rotating speed and the first variation D1,
if the pressing duration T of the accelerator key is longer than the preset pressing duration Tp, the set rotating speed is equal to the sum of the current rotating speed and [ (Tp-T) xD 2+ D1], wherein D2 is a second variable quantity;
and/or
When the speed-down key is pressed:
if the time length T that the speed reduction key is pressed is less than or equal to the preset pressing time length Tp, the set rotating speed is equal to the current rotating speed minus the first variation D1,
if the time length T that the speed reduction key is pressed is longer than the preset pressing time length Tp, the set rotating speed is equal to the current rotating speed minus [ (Tp-T) xD 2+ D1], wherein D2 is the second variation,
wherein the second variation D2 is greater than the first variation D1.
According to the diesel engine speed regulation control device, the mode of operating the acceleration and deceleration setting element can be changed, so that the large rotating speed variation quantity and the small rotating speed variation quantity can be set respectively, and the use is more convenient.
Optionally, step S30 includes:
setting the value of the target rotation speed as the target rotation speed upper limit value when the set rotation speed is greater than the target rotation speed upper limit value,
setting the value of the target rotation speed as a target rotation speed lower limit value when the set rotation speed is less than the target rotation speed lower limit value,
the value of the target rotation speed is set to the set rotation speed when the set rotation speed is less than or equal to the target rotation speed upper limit value and greater than or equal to the target rotation speed lower limit value,
wherein the target rotation speed upper limit value is greater than the target rotation speed lower limit value.
According to the diesel engine speed regulation control device, the diesel engine can be ensured to work under the safe rotating speed by limiting the range of the target rotating speed.
Optionally, step S30 includes:
in the speed increasing process of the diesel engine, when the set rotating speed is less than a first rotating speed forbidden zone lower limit value, the target rotating speed is set as the set rotating speed, when the set rotating speed is less than a first rotating speed forbidden zone upper limit value and is greater than or equal to the first rotating speed forbidden zone lower limit value, and when the set rotating speed is greater than or equal to the first rotating speed forbidden zone upper limit value, the target rotating speed is set as the set rotating speed; and/or
In a rotational speed decelerating process of the diesel engine, the target rotational speed is set to the set rotational speed when the set rotational speed is greater than the first rotational speed forbidden zone upper limit value, the target rotational speed is set to the first rotational speed forbidden zone upper limit value when the set rotational speed is less than or equal to the first rotational speed forbidden zone upper limit value and greater than the first rotational speed forbidden zone lower limit value, and the target rotational speed is set to the set rotational speed when the set rotational speed is less than or equal to the first rotational speed forbidden zone lower limit value,
the upper limit value of the first rotating speed forbidden zone is larger than the lower limit value of the first rotating speed forbidden zone.
Further, the first rotation speed forbidden zone upper limit value is greater than or equal to Nc1 · (1+ X), and/or the first rotation speed forbidden zone lower limit value is less than or equal to Nc1 · (1-X), wherein Nc1 is the first critical rotation speed of the diesel engine, and 5% < ═ X < 100%.
According to the diesel engine speed regulation control device, the vibration damage of the diesel engine can be reduced by limiting the target rotating speed to enter the critical rotating speed.
Further, step S30 further includes:
in the process of increasing the rotating speed of the diesel engine, when the set rotating speed is less than a second rotating speed forbidden zone lower limit value, the target rotating speed is set as the set rotating speed, when the set rotating speed is less than a second rotating speed forbidden zone upper limit value and is greater than or equal to the second rotating speed forbidden zone lower limit value, and when the set rotating speed is greater than or equal to the second rotating speed forbidden zone upper limit value, the target rotating speed is set as the set rotating speed; and/or
In the process of reducing the rotation speed of the diesel engine, when the set rotation speed is greater than the second rotation speed forbidden zone upper limit value, the target rotation speed is set as the set rotation speed, when the set rotation speed is less than or equal to the second rotation speed forbidden zone upper limit value and greater than the second rotation speed forbidden zone lower limit value, the target rotation speed is set as the second rotation speed forbidden zone upper limit value, when the set rotation speed is less than or equal to the second rotation speed forbidden zone lower limit value, the target rotation speed is set as the set rotation speed,
the upper limit value of the second rotation speed forbidden zone is greater than the lower limit value of the second rotation speed forbidden zone, and the lower limit value of the second rotation speed forbidden zone is greater than the upper limit value of the first rotation speed forbidden zone.
Further, the second rotation speed forbidden zone upper limit value is greater than or equal to Nc2 (1+ Y), and/or the second rotation speed forbidden zone lower limit value is less than or equal to Nc2 (1-Y), wherein Nc2 is the second critical rotation speed of the diesel engine, Nc2> Nc1, 5% < -Y < 100%.
According to the diesel engine speed regulation control device, two critical rotating speeds and two rotating speed forbidden zones corresponding to the two critical rotating speeds can be set.
Optionally, step S40 includes:
when the target rotating speed is greater than the current rotating speed:
the control module is configured to change the rotational speed of the diesel engine from the current rotational speed to the target rotational speed at a first rate if the target rotational speed is less than or equal to a first rotational speed,
if the target speed is greater than the first speed and less than or equal to a second speed, the control module is configured to change the speed of the diesel engine from the current speed to the target speed at a second rate, wherein the second speed is greater than the first speed and the second rate is greater than the first rate,
if the target speed is greater than the second speed, the control module is configured to change the speed of the diesel engine from the current speed to the target speed at a third rate, wherein the third rate is greater than the second rate;
and/or
When the target rotating speed is less than the current rotating speed:
the control module is configured to change a rotational speed of the diesel engine from the current rotational speed to the target rotational speed at a preset deceleration rate.
According to the diesel engine speed regulation control device of the present invention, the rotational speed of the diesel engine is smoothly changed by controlling the rate of change of the rotational speed of the diesel engine.
Optionally, step S40 includes: and adjusting the fuel injection quantity of the electronic control fuel injection system through a PID closed-loop controller according to the difference value between the target rotating speed and the current rotating speed, so as to adjust the rotating speed of the diesel engine.
According to the diesel engine speed regulation control device, the rotating speed of the diesel engine is regulated by a PID closed-loop control method, and the regulation is more accurate.
A second aspect of the invention provides a marine vessel comprising a diesel engine and the aforementioned speed control device.
According to the ship, the diesel engine is used as a power device, and a plurality of sets of rotating speed setting input elements are set according to various application modes of the diesel engine, so that different use requirements of users are facilitated. Meanwhile, the rotating speed set by a user in a plurality of application modes is processed to obtain a more appropriate target rotating speed, and the fuel injection quantity of the electric control fuel injection system is adjusted by adopting a negative feedback control method according to the deviation of the target rotating speed and the current actual rotating speed, so that the rotating speed of the diesel engine is adjusted, and the control process is safe and effective.
Drawings
The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings:
fig. 1 is a block diagram showing a configuration of a governor control apparatus for a diesel engine according to a preferred embodiment of the present invention;
fig. 2 is a schematic view of a governor control principle of a governor control apparatus for a diesel engine according to a preferred embodiment of the present invention;
fig. 3 is a flowchart of a process of setting a rotational speed of a governor control apparatus for a diesel engine in a power generation application mode according to a preferred embodiment of the present invention;
FIG. 4 is a flowchart of a set speed process of a throttle control apparatus for a diesel engine in a propulsion application mode according to an embodiment of the present invention;
fig. 5 is a flowchart of a set rotation speed process of a governor control apparatus for a diesel engine in a propulsion application mode according to another embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a control method for controlling the speed forbidden zone in FIGS. 3 to 5 during the acceleration of the diesel engine;
fig. 7 is a schematic diagram of a control method for controlling the rotation speed forbidden zone in fig. 3 to 5 during deceleration of the diesel engine.
Description of reference numerals:
10: speed regulation control device
20: power generation mode setting element
21: idling speed setting element
22: rated speed setting element
30: first propulsion mode setting element
31: arranging rotation speed setting element
32: element for setting the speed of rotation of a row of pipes
40: second propulsion mode setting element
50: acceleration and deceleration setting element
51: acceleration setting element
52: deceleration arrangement element
60: control module
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring embodiments of the present invention.
Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. In the drawings, the same reference numerals are used to designate the same elements for the sake of clarity, and thus their description will be omitted.
The following detailed description is to be read in connection with specific embodiments.
The invention firstly provides a speed regulation control device for a diesel engine and a speed regulation control method matched with the speed regulation control device. The speed regulation control device and the speed regulation control method are particularly suitable for marine diesel engines.
As shown in fig. 1, in a preferred embodiment, the throttle control 10 includes a power generation mode setting element 20, a first propulsion mode setting element 30, a second propulsion mode setting element 40, an acceleration and deceleration setting element 50, and a control module 60. The power generation mode setting element 20, the first propulsion mode setting element 30, the second propulsion mode setting element 40, and the acceleration and deceleration setting element 50 are all coupled to the control module 60. The control module 60 is also coupled to an electronically controlled fuel injection system 70. The power generation mode setting element 20, the first propulsion mode setting element 30 and the second propulsion mode setting element 40 are used for a user to input a set rotating speed in various application modes of the diesel engine, and the acceleration and deceleration setting element 50 is used for a user to input acceleration and deceleration information (for example, the amount of increase or decrease of the rotating speed of the diesel engine is required). The control module 60 has control software built therein. After receiving the information from the above-mentioned setting elements, the control module 60 processes the information through the control software to control the operation of the electronic control fuel injection system 70, so as to achieve the purpose of controlling the rotation speed of the diesel engine.
It is understood that the speed control device 10 further includes a display module for displaying human-computer interaction information.
As shown in fig. 2, in a preferred embodiment of the present invention, a speed regulation control method for a diesel engine processes a rotation speed (i.e., a set rotation speed) set by a user in multiple application modes (e.g., a power generation application mode and a propulsion application mode) to obtain a target rotation speed, calculates a current actual rotation speed (i.e., a current rotation speed) of the diesel engine in real time, calculates a current oil amount of the diesel engine by using a PID (proportional-derivative-integral) closed-loop controller according to a deviation between the target rotation speed and the current rotation speed, and adjusts an oil injection amount of an electronically controlled fuel system to control the rotation speed of the diesel engine.
Specifically, the power generation mode setting element 20 is used for a user to set a set rotation speed of the diesel engine in the power generation application mode in the form of a point value. The power generation mode setting element 20 includes an idle rotation speed setting element 21 and a rated rotation speed setting element 22. The idle speed setting element 21 and the setpoint speed setting element 22 may be configured, for example, as a key element, such as a pushbutton, a touch screen, a touch-sensitive key, or the like. When the user operates the idle rotation speed setting element 21, the idle rotation speed setting element 21 sends a short-time trigger signal, and the control module 60 receives the trigger signal, so as to set the set rotation speed to the idle rotation speed. When the user operates the rated rotation speed setting element 22, the rated rotation speed setting element 22 emits a short-time trigger signal, which the control module 60 receives, thereby setting the set rotation speed to the rated rotation speed. The idle speed and the rated speed are preset values.
The first propulsion mode setting element 30 is used for the user to set the set rotational speed of the diesel engine in the propulsion application mode in the form of a point value. The first propulsion mode setting element 30 comprises an in-line rotational speed setting element 31 and an out-of-line rotational speed setting element 32. The alignment rotational speed setting element 31 and the detachment rotational speed setting element 32 may each be configured, for example, as a key element, such as a button, a touch screen key, or the like. When the user operates the aligning rotating speed setting element 31, the aligning rotating speed setting element 31 sends a short-time trigger signal, and the control module 60 receives the trigger signal, so as to set the set rotating speed as the aligning rotating speed. When the user operates the discharging rotation speed setting element 32, the discharging rotation speed setting element 32 sends a short-time trigger signal, and the control module 60 receives the trigger signal, so as to set the set rotation speed as the discharging rotation speed. Wherein, the close-up rotating speed and the release rotating speed are preset values.
The second propulsion mode setting element 40 is used for the user to set the set speed of the diesel engine in the propulsion application mode in the form of a continuous analog quantity. The second propulsion mode setting element 40 may for example be configured as a knob element, which knob may be continuously rotated. When the knob is rotated, the rotation angle corresponds to the 4-20mA analog signal, and the control module 60 can calculate the set rotation speed according to the 4-20mA analog input signal, that is, the rotation speed in the whole working range of the diesel engine can be set through the knob. The lower the current corresponding to the second propulsion mode setting element 40, the lower the set rotational speed of the diesel engine, and the higher the current corresponding to the second propulsion mode setting element 40, the higher the set rotational speed of the diesel engine. It will be appreciated that the second propulsion mode setting element 40 may also be configured as a continuously adjustable slider-type adjustment element, for example.
In a preferred embodiment, the control module 60 is configured to perform the steps of:
s10, acquiring the current rotating speed of the diesel engine;
s20, acquiring the set rotating speed of the diesel engine;
s30, determining a target rotating speed according to the set rotating speed;
and S40, adjusting the fuel injection quantity of the electronic control fuel injection system according to the difference value between the target rotating speed and the current rotating speed, thereby adjusting the rotating speed of the diesel engine.
In step S10, the control module 60 may calculate the current speed of the diesel engine by monitoring signals of the sensors, voltage signals, current signals, and the like.
In step S20, the control module 60 acquires the set rotation speed of the diesel engine in the power generation application mode from the power generation mode setting element 20; alternatively, the set rotational speed of the diesel engine in the propulsion application mode is obtained from the first propulsion mode setting element 30 or the second propulsion mode setting element 40. Wherein in the propulsion application mode the vessel is configured to set the set rotation speed either by the first propulsion mode setting element 30 or by the second propulsion mode setting element 40. Since the power generation application mode and the propulsion application mode of the diesel engine do not exist at the same time, only one of the power generation mode setting member 20, the first propulsion mode setting member 30, and the second propulsion mode setting member 40 may be operated in a specific application mode.
The above-described power generation mode setting member 20 and first propulsion mode setting member 30 can realize one-key operation to set a certain set rotation speed of a commonly used fixed value. In order to adapt to different loads, the rotating speed of the diesel engine needs to be adjusted within a certain range, and the acceleration and deceleration setting element 50 is used for a user to input acceleration and deceleration information. Specifically, the acceleration/deceleration setting element 50 is used for the user to set the set rotation speed of the diesel engine based on the current rotation speed in a manner of increasing or decreasing the current rotation speed. The acceleration-deceleration-setting element 50 includes an acceleration-setting element 51 and a deceleration-setting element 52. When the user operates the acceleration/deceleration setting element 50, step S20 further includes: the control module 60 obtains a set rotational speed from the acceleration and deceleration setting element 50.
Specifically, the acceleration setting element 51 is used to set the set rotational speed in such a manner as to increase the current rotational speed on the basis of the current rotational speed, that is, it is desired that the diesel engine is rotated up; the deceleration setting member 52 is used to set the set rotational speed in such a manner as to reduce the current rotational speed based on the current rotational speed, i.e., it is desired to decelerate the rotation of the diesel engine. The acceleration setting element 51 and the deceleration setting element 52 may each be configured, for example, as a key element, such as a button, a touch screen key, or the like.
Preferably, when the speed-up key 51 is pressed: if the time length T for which the acceleration key 51 is pressed is less than or equal to the preset pressing time length Tp, setting the rotating speed equal to the sum of the current rotating speed and the first variation D1; if the accelerator key 51 is pressed for a time period T longer than the preset pressing time period Tp, the set rotation speed is equal to the sum of the current rotation speed and [ (Tp-T) × D2+ D1], where D2 is the second variation. For example, the preset pressing time is 1s, the first variation D1 is 1rpm, and the second variation D2 is 50 rpm. If the current rotation speed is 500rpm, if the acceleration key 51 is pressed for a short time (i.e., the pressing duration does not exceed the preset pressing duration 1s), the set rotation speed is 501rpm, and the set rotation speed is increased by the first variation D1 based on the current rotation speed. If the current rotation speed is 500rpm, if the accelerator key 51 is pressed for 3.5s for a long time, the set rotation speed in the first 1s is firstly changed into 501rpm, then the set rotation speed in the second 2.5s is gradually increased from 501rpm to 626rpm, and the set rotation speed is increased by (Tp-T) × D2+ D1 to (3.5-1) × 50+1 to 2.5 × 50+1 to 126rpm on the basis of the current rotation speed of 500 rpm.
Preferably, when the speed-down key 52 is pressed: if the time length T that the speed reduction key 52 is pressed is less than or equal to the preset pressing time length Tp, setting the rotating speed to be equal to the current rotating speed minus the first variation D1; if the speed-down key 52 is pressed for a time period T greater than the preset pressing time period Tp, the set rotation speed is equal to the current rotation speed minus [ (Tp-T) × D2+ D1], where D2 is the second variation. For example, the preset pressing time is 1s, the first variation D1 is 1rpm, and the second variation D2 is 50 rpm. If the current speed is 500rpm, if the speed-down button 52 is pressed for a short time (i.e., the pressing duration does not exceed the preset pressing duration 1s), the set speed is 499rpm, and the set speed is reduced by the first variation D1 based on the current speed. If the current rotation speed is 500rpm, if the speed reduction key 52 is pressed for 3.5s for a long time, the set rotation speed in the first 1s is changed to 499rpm, the set rotation speed in the second 2.5s is gradually reduced from 499rpm to 374rpm, and the set rotation speed is reduced by (Tp-T) × D2+ D1 ═ 3.5-1) × 50+1 ═ 2.5 × 50+1 ═ 126rpm on the basis of the current rotation speed of 500 rpm.
Preferably, the second variation D2 is greater than the first variation D1. Therefore, the user can conveniently set the set rotating speed through the time length of pressing the key.
As previously described, the second propulsion mode setting element 40 may perform the function of continuously setting the diesel engine speed by an analog amount, similar to the operation effect of the acceleration/deceleration setting element 50. To optimize the control flow, when the vessel is configured to set the rotational speed by the second propulsion mode setting element 40, the control module 60 is configured to: if the second propulsion mode setting element 40 is not malfunctioning, the function of the acceleration/deceleration setting element 50 is masked; if the second propulsion mode setting element 40 fails, the acceleration/deceleration setting element 50 is enabled and acceleration/deceleration processing is performed on the basis of the set rotation speed set by the second propulsion mode setting element 40 before the failure occurs. For example, when the current rotation speed is 2000rpm, the user wants to increase the rotation speed to 2100rpm, and thus operates the second propulsion mode setting member 40 (e.g., the rotation knob), a malfunction occurs when the second propulsion mode setting member 40 is rotated to a position corresponding to the rotation speed of 2050rpm, at which time the alarm device alarms to inform the user that the second propulsion mode setting member 40 is malfunctioning, and the control module 60 enables the acceleration and deceleration setting member 50, the user can continue to set the set rotation speed using the acceleration and deceleration setting member 50 (e.g., the acceleration setting member 51). At this time, the user can set the set rotation speed to 2100rpm on the basis of 2050rpm by the acceleration setting element 51. The user may adjust the diesel engine speed by the acceleration and deceleration setting member 50 until the second propulsion mode setting member 40 is not repaired. When the user adjusts the rotation speed using the acceleration/deceleration setting member 50 again, the set rotation speed is set on the basis of the current rotation speed.
Based on the power generation mode setting member 20, the first propulsion mode setting member 30, the second propulsion mode setting member 40, and the acceleration/deceleration setting member 50, the user can complete the work of setting the set rotation speed. The control module 60 will further process the set rotational speed to obtain the target rotational speed.
To ensure safe operation of the diesel engine, the control module 60 is configured to control a range of target speeds. Preferably, the control software is provided with a target rotation speed upper limit value and a target rotation speed lower limit value, wherein the target rotation speed upper limit value is greater than the target rotation speed lower limit value. Step S30 includes: when the set rotating speed is greater than the target rotating speed upper limit value, setting the value of the target rotating speed as the target rotating speed upper limit value; when the set rotating speed is smaller than the lower limit value of the target rotating speed, setting the value of the target rotating speed as the lower limit value of the target rotating speed; when the set rotation speed is less than or equal to the target rotation speed upper limit value and greater than or equal to the target rotation speed lower limit value, the value of the target rotation speed is set as the set rotation speed.
To avoid vibration damage at the critical speed, it is preferable that the control software does not make the diesel engine rotate at the critical speed Nc. Specifically, the control software is provided with a rotation speed forbidden zone range which is not less than +/-5% of Nc, namely the upper limit value of the rotation speed forbidden zone is greater than or equal to Nc (1+ X), and the lower limit value of the rotation speed forbidden zone is less than or equal to Nc (1-X), wherein 5% < ═ X < 100%.
As shown in fig. 3, in the process of increasing the rotation speed of the diesel engine, the step S30 includes: when the set rotating speed is less than the lower limit value of the rotating speed forbidden zone, the target rotating speed is set as the set rotating speed; when the set rotating speed is less than the upper limit value of the rotating speed forbidden zone and is greater than or equal to the lower limit value of the rotating speed forbidden zone, the target rotating speed is set as the lower limit value of the rotating speed forbidden zone; when the set rotating speed is greater than or equal to the rotating speed forbidden zone upper limit value, the target rotating speed is set as the set rotating speed. That is, during acceleration of the diesel engine, the speed forbidden zone is crossed.
As shown in fig. 4, in the rotational speed reduction process of the diesel engine, step S30 includes: when the set rotating speed is greater than the upper limit value of the rotating speed forbidden zone, the target rotating speed is set as the set rotating speed; when the set rotating speed is less than or equal to the upper limit value of the rotating speed forbidden zone and greater than the lower limit value of the rotating speed forbidden zone, the target rotating speed is set as the upper limit value of the rotating speed forbidden zone; when the set rotation speed is less than or equal to the rotation speed forbidden zone lower limit value, the target rotation speed is set as the set rotation speed. That is, during deceleration of the diesel engine, the speed forbidden zone is crossed.
In the present invention, two forbidden zones can be set at most, that is, two critical rotation speeds at most, a first critical rotation speed Nc1 and a second critical rotation speed Nc2, where Nc2> Nc1, are included.
Step S30 includes: in the process of increasing the rotating speed of the diesel engine, when the set rotating speed is less than the lower limit value of the first rotating speed forbidden zone, the target rotating speed is set as the set rotating speed, when the set rotating speed is less than the upper limit value of the first rotating speed forbidden zone and is greater than or equal to the lower limit value of the first rotating speed forbidden zone, the target rotating speed is set as the lower limit value of the first rotating speed forbidden zone, and when the set rotating speed is greater than or equal to the upper limit value of the first rotating speed forbidden zone, the target rotating speed is set as the set rotating speed; in the rotating speed deceleration process of the diesel engine, when the set rotating speed is greater than the upper limit value of the first rotating speed forbidden zone, the target rotating speed is set as the set rotating speed, when the set rotating speed is less than or equal to the upper limit value of the first rotating speed forbidden zone and greater than the lower limit value of the first rotating speed forbidden zone, the target rotating speed is set as the upper limit value of the first rotating speed forbidden zone, and when the set rotating speed is less than or equal to the lower limit value of the first rotating speed forbidden zone, the target rotating speed is set as the set rotating speed. The upper limit value of the first rotating speed forbidden zone is larger than the lower limit value of the first rotating speed forbidden zone. The upper limit value of the first rotation speed forbidden zone is greater than or equal to Nc1 (1+ X), and the lower limit value of the first rotation speed forbidden zone is less than or equal to Nc1 (1-X), wherein Nc1 is the first critical rotation speed of the diesel engine, and 5% <X < 100%.
Step S30 includes: in the process of increasing the rotating speed of the diesel engine, when the set rotating speed is less than the lower limit value of the second rotating speed forbidden zone, the target rotating speed is set as the set rotating speed, when the set rotating speed is less than the upper limit value of the second rotating speed forbidden zone and is greater than or equal to the lower limit value of the second rotating speed forbidden zone, the target rotating speed is set as the lower limit value of the second rotating speed forbidden zone, and when the set rotating speed is greater than or equal to the upper limit value of the second rotating speed forbidden zone, the target rotating speed is set as the set rotating speed; in the process of reducing the rotating speed of the diesel engine, when the set rotating speed is greater than the upper limit value of the second rotating speed forbidden zone, the target rotating speed is set as the set rotating speed, when the set rotating speed is less than or equal to the upper limit value of the second rotating speed forbidden zone and is greater than the lower limit value of the second rotating speed forbidden zone, the target rotating speed is set as the upper limit value of the second rotating speed forbidden zone, and when the set rotating speed is less than or equal to the lower limit value of the second rotating speed forbidden zone, the target rotating speed is set as the set rotating speed. The upper limit value of the second rotation speed forbidden zone is larger than the lower limit value of the second rotation speed forbidden zone, and the lower limit value of the second rotation speed forbidden zone is larger than the upper limit value of the first rotation speed forbidden zone. The upper limit value of the second rotation speed forbidden zone is greater than or equal to Nc2 (1+ Y), and the lower limit value of the second rotation speed forbidden zone is less than or equal to Nc2 (1-Y), wherein Nc2 is the second critical rotation speed of the diesel engine, and 5% < -Y < 100%.
To this end, the control module 60 has been able to determine a target speed for the diesel engine.
In step S40, the control module 60 preferably adjusts the fuel injection amount of the electronically controlled fuel injection system via the PID closed-loop controller according to the difference between the target speed and the current speed, so as to adjust the speed of the diesel engine to reach or approach the target speed.
To ensure smooth variation of the diesel engine speed, the control module 60 preferably controls the rate of change of the diesel engine speed (i.e., the speed of change of the speed) in step S40. When the target rotating speed is larger than the current rotating speed (namely when the rotating speed of the diesel engine needs to be increased): if the target speed is less than or equal to the first speed, the control module 60 is configured to cause the speed of the diesel engine to change from the current speed to the target speed at a first rate (e.g., 25 rpm/s); if the target speed is greater than the first speed and less than or equal to a second speed, the control module 60 is configured to change the speed of the diesel engine from the current speed to the target speed at a second rate (e.g., 30rpm/s), wherein the second speed is greater than the first speed and the second rate is greater than the first rate; if the target speed is greater than the second speed, the control module 60 is configured to change the speed of the diesel engine from the current speed to the target speed at a third rate (e.g., 35rpm/s), wherein the third rate is greater than the second rate.
Preferably, in step S40, when the target rotation speed is less than the current rotation speed (i.e. when the rotation speed of the diesel engine is required to be decelerated): the control module 60 is configured to vary the speed of the diesel engine from a current speed to a target speed at a preset derating rate (e.g., 40 rpm/s).
Fig. 5 to 7 illustrate the above-described control process in various application modes.
As shown in fig. 5, in the power generation application mode, when the diesel engine receives a stop command, the set rotation speed is set to 0. And if the test mode is the test mode, assigning the test rotating speed set by the test software to the set rotating speed. When the diesel engine runs, the set rotating speed assignment is carried out according to the point value input signal of the power generation mode setting element 20, namely: when the idle speed contact is effective (the idle speed setting element 21 is operated), the set speed is assigned as the idle speed; the setpoint rotational speed value is set to the setpoint rotational speed when the setpoint rotational speed contact is active (the setpoint rotational speed setting element 22 is actuated). When the acceleration/deceleration contact is effective (the acceleration/deceleration setting member 50 is operated), the set rotation speed is obtained according to the case where the acceleration/deceleration setting member 50 is operated. And then, the set rotating speed set through a key for example is subjected to safety range limitation and rotating speed forbidden zone crossing control to obtain the final target rotating speed. And finally, controlling the rotation speed of the diesel engine to gradually change from the current rotation speed to the target rotation speed at a proper change rate.
As shown in fig. 6, in the first propulsion application mode, when the diesel engine receives a stop command, the set rotation speed is set to 0. And if the test mode is the test mode, assigning the test rotating speed set by the test software to the set rotating speed. When the diesel engine is running, the set rotation speed assignment is carried out according to the point value input signal of the first propulsion mode setting element 30, namely: when the row combination rotating speed contact is effective (the row combination rotating speed setting element 31 is operated), the set rotating speed is assigned as the row combination rotating speed; when the discharging speed contact is effective (the discharging speed setting element 32 is operated), the set rotating speed is assigned as the discharging rotating speed. When the acceleration/deceleration contact is effective (the acceleration/deceleration setting member 50 is operated), the set rotation speed is obtained according to the case where the acceleration/deceleration setting member 50 is operated. And then, the set rotating speed set through a key for example is subjected to safety range limitation and rotating speed forbidden zone crossing control to obtain the final target rotating speed. And finally, controlling the rotation speed of the diesel engine to change from the current rotation speed to the target rotation speed step by step at a proper change rate.
As shown in fig. 7, in the second propulsion application mode, when the diesel engine receives a stop command, the set rotation speed is set to 0. And if the test mode is the test mode, assigning the test rotating speed set by the test software to the set rotating speed. When the diesel engine runs, the set rotating speed is assigned according to the analog quantity input signal of the second propulsion mode setting element 40. If the second propulsion mode setting element 40 fails, the acceleration/deceleration setting element 50 is activated to set the set rotational speed. And then, carrying out safety range limitation and rotation speed forbidden zone crossing control on the set rotation speed set by the setting element to obtain the final target rotation speed. And finally, controlling the rotation speed of the diesel engine to gradually change from the current rotation speed to the target rotation speed at a proper change rate.
A second aspect of the invention provides a marine vessel that employs a diesel engine as a drive device and that employs a speed control device for the diesel engine as described above to regulate and control the rotational speed of the diesel engine.
According to the diesel engine speed regulation control device, a plurality of sets of rotating speed setting input elements are set according to various application modes of the diesel engine, so that different use requirements of users are facilitated. Meanwhile, the rotating speed set by a user in a plurality of application modes is processed to obtain a more appropriate target rotating speed, and the fuel injection quantity of the electric control fuel injection system is adjusted by adopting a negative feedback control method according to the deviation of the target rotating speed and the current actual rotating speed, so that the rotating speed of the diesel engine is adjusted, and the control process is safe and effective.
The ship according to the present invention includes the diesel speed control device according to the present invention, and therefore has all the features and effects of the diesel speed control device according to the present invention.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (15)
1. A throttle control apparatus for a diesel engine configured to operate in either a power generation application mode or a propulsion application mode, comprising:
a power generation mode setting element for setting a set rotation speed of the diesel engine in the power generation application mode in point value form;
a first propulsion mode setting element for setting a set rotational speed of the diesel engine in the propulsion application mode in point value;
a second propulsion mode setting element for setting a set rotation speed of the diesel engine in a propulsion application mode in the form of a continuous analog quantity; and
a control module coupled with the power generation mode setting element, the first propulsion mode setting element, and the second propulsion mode setting element such that the control module obtains the set rotational speed,
wherein the control module is configured to perform the steps of:
s10, acquiring the current rotating speed of the diesel engine;
s20, acquiring the set rotating speed of the diesel engine, including:
obtaining a set rotation speed of the diesel engine in the power generation application mode from the power generation mode setting element, or
Obtaining a set rotational speed of the diesel engine in the propulsion application mode from the first propulsion mode setting element or the second propulsion mode setting element;
s30, determining a target rotating speed according to the set rotating speed;
and S40, adjusting the fuel injection quantity of the electronic control fuel injection system according to the difference value between the target rotating speed and the current rotating speed, thereby adjusting the rotating speed of the diesel engine.
2. The speed regulation control device of claim 1, wherein the power generation mode setting element comprises:
an idle rotation speed setting element that, when operated, sets the set rotation speed to a preset idle rotation speed; and
a rated rotation speed setting element that is set to a preset rated rotation speed when the rated rotation speed setting element is operated.
3. Speed regulation control device according to claim 1, characterized in that the first propulsion mode setting element comprises:
an alignment rotational speed setting element that sets the set rotational speed to a preset alignment rotational speed when the alignment rotational speed setting element is operated; and
a discharging rotation speed setting element that is set to a preset discharging rotation speed when the discharging rotation speed setting element is operated.
4. The throttle control device of claim 1, further comprising an acceleration-deceleration setting element for setting the set rotational speed in a manner that increases or decreases the current rotational speed based on the current rotational speed, the acceleration-deceleration setting element coupled to the control module,
step S20 further includes: the control module obtains the set rotating speed from the acceleration and deceleration setting element.
5. Speed regulation control device according to claim 4, characterized in that the speed regulation control device is configured to enable the acceleration and deceleration setting element when the second propulsion mode setting element fails.
6. The throttle control device of claim 4, wherein the acceleration and deceleration setting element is configured as a key, the acceleration and deceleration setting element comprising:
the acceleration key is used for setting the set rotating speed in a mode of increasing the current rotating speed on the basis of the current rotating speed; and
and the speed reduction key is used for setting the set rotating speed in a mode of reducing the current rotating speed on the basis of the current rotating speed.
7. Speed regulation control apparatus according to claim 6,
when the speed-up key is pressed:
if the time length T that the acceleration key is pressed is less than or equal to the preset pressing time length Tp, the set rotating speed is equal to the sum of the current rotating speed and the first variation D1,
if the pressing duration T of the accelerator key is longer than the preset pressing duration Tp, the set rotating speed is equal to the sum of the current rotating speed and [ (Tp-T) xD 2+ D1], wherein D2 is a second variable quantity;
and/or
When the speed-down key is pressed:
if the time length T that the speed reduction key is pressed is less than or equal to the preset pressing time length Tp, the set rotating speed is equal to the current rotating speed minus the first variation D1,
if the time length T that the speed reduction key is pressed is longer than the preset pressing time length Tp, the set rotating speed is equal to the current rotating speed minus [ (Tp-T) xD 2+ D1], wherein D2 is the second variation,
wherein the second variation D2 is greater than the first variation D1.
8. The throttle control device according to any one of claims 1 to 7, wherein step S30 includes:
setting the value of the target rotation speed as the target rotation speed upper limit value when the set rotation speed is greater than the target rotation speed upper limit value,
setting the value of the target rotation speed as a target rotation speed lower limit value when the set rotation speed is less than the target rotation speed lower limit value,
the value of the target rotation speed is set to the set rotation speed when the set rotation speed is less than or equal to the target rotation speed upper limit value and greater than or equal to the target rotation speed lower limit value,
wherein the target rotation speed upper limit value is greater than the target rotation speed lower limit value.
9. The throttle control device according to any one of claims 1 to 7, wherein step S30 includes:
in the speed increasing process of the diesel engine, when the set rotating speed is less than a first rotating speed forbidden zone lower limit value, the target rotating speed is set as the set rotating speed, when the set rotating speed is less than a first rotating speed forbidden zone upper limit value and is greater than or equal to the first rotating speed forbidden zone lower limit value, and when the set rotating speed is greater than or equal to the first rotating speed forbidden zone upper limit value, the target rotating speed is set as the set rotating speed; and/or
In a process of reducing the rotational speed of the diesel engine, the target rotational speed is set to the set rotational speed when the set rotational speed is greater than the first rotational speed forbidden zone upper limit value, the target rotational speed is set to the first rotational speed forbidden zone upper limit value when the set rotational speed is less than or equal to the first rotational speed forbidden zone upper limit value and greater than the first rotational speed forbidden zone lower limit value, the target rotational speed is set to the set rotational speed when the set rotational speed is less than or equal to the first rotational speed forbidden zone lower limit value,
the upper limit value of the first rotating speed forbidden zone is larger than the lower limit value of the first rotating speed forbidden zone.
10. The governor control device according to claim 9, wherein the first restricted rotation speed upper limit value is greater than or equal to Nc1 · (1+ X), and/or the first restricted rotation speed lower limit value is less than or equal to Nc1 · (1-X), where Nc1 is the first critical rotation speed of the diesel engine, and 5% < ═ X < 100%.
11. The speed governing control device of claim 10, wherein step S30 further comprises:
in the process of increasing the rotating speed of the diesel engine, when the set rotating speed is less than a second rotating speed forbidden zone lower limit value, the target rotating speed is set as the set rotating speed, when the set rotating speed is less than a second rotating speed forbidden zone upper limit value and is greater than or equal to the second rotating speed forbidden zone lower limit value, and when the set rotating speed is greater than or equal to the second rotating speed forbidden zone upper limit value, the target rotating speed is set as the set rotating speed; and/or
In the process of reducing the rotation speed of the diesel engine, when the set rotation speed is greater than the second rotation speed forbidden zone upper limit value, the target rotation speed is set as the set rotation speed, when the set rotation speed is less than or equal to the second rotation speed forbidden zone upper limit value and greater than the second rotation speed forbidden zone lower limit value, the target rotation speed is set as the second rotation speed forbidden zone upper limit value, when the set rotation speed is less than or equal to the second rotation speed forbidden zone lower limit value, the target rotation speed is set as the set rotation speed,
the upper limit value of the second rotation speed forbidden zone is greater than the lower limit value of the second rotation speed forbidden zone, and the lower limit value of the second rotation speed forbidden zone is greater than the upper limit value of the first rotation speed forbidden zone.
12. The speed-regulation control device according to claim 11, wherein the second rotation speed forbidden zone upper limit value is greater than or equal to Nc2 · (1+ Y), and/or the second rotation speed forbidden zone lower limit value is less than or equal to Nc2 · (1-Y), where Nc2 is a second critical rotation speed of the diesel engine, Nc2> Nc1, and 5% < ═ Y < 100%.
13. The throttle control device according to any one of claims 1 to 7, wherein step S40 includes:
when the target rotating speed is greater than the current rotating speed:
the control module is configured to change the rotational speed of the diesel engine from the current rotational speed to the target rotational speed at a first rate if the target rotational speed is less than or equal to a first rotational speed,
if the target speed is greater than the first speed and less than or equal to a second speed, the control module is configured to change the speed of the diesel engine from the current speed to the target speed at a second rate, wherein the second speed is greater than the first speed and the second rate is greater than the first rate,
if the target speed is greater than the second speed, the control module is configured to change the speed of the diesel engine from the current speed to the target speed at a third rate, wherein the third rate is greater than the second rate;
and/or
When the target rotating speed is less than the current rotating speed:
the control module is configured to change a rotational speed of the diesel engine from the current rotational speed to the target rotational speed at a preset deceleration rate.
14. The throttle control device according to any one of claims 1 to 7, wherein step S40 further includes: and adjusting the fuel injection quantity of the electronic control fuel injection system through a PID closed-loop controller according to the difference value between the target rotating speed and the current rotating speed, so as to adjust the rotating speed of the diesel engine.
15. A marine vessel comprising a diesel engine and a speed control device according to any one of claims 1-14.
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| CN115750108A (en) * | 2022-11-29 | 2023-03-07 | 上海船舶运输科学研究所有限公司 | Multifunctional speed regulation driving system and method for marine high-power diesel engine |
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