CN213540600U - Electric control type starting device of marine diesel engine - Google Patents
Electric control type starting device of marine diesel engine Download PDFInfo
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- CN213540600U CN213540600U CN202022505173.2U CN202022505173U CN213540600U CN 213540600 U CN213540600 U CN 213540600U CN 202022505173 U CN202022505173 U CN 202022505173U CN 213540600 U CN213540600 U CN 213540600U
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Abstract
The utility model provides an automatically controlled formula starting drive of marine diesel engine, belongs to diesel engine technical field, and the problem that exists among the prior art is overcome to this technical scheme, breaks through traditional marine diesel engine start air system design theory, provides a new design to high-power diesel engine starting system. The original starting air system function is decomposed, and a new method for controlling the diesel engine to realize the control logic and the control function is formed by combining a camshaft position indicator, a camshaft position detection sensor, a starting controller, an electromagnetic valve and the like, so that the control system is simple in structure and the maintainability is improved; no moving part is arranged in the control system, so that the condition of part abrasion is eliminated; the application in different machine types can be met, and the application field is expanded; provides a certain foundation for the development and the development of a follow-up novel diesel engine.
Description
Technical Field
The utility model belongs to the technical field of the diesel engine, concretely relates to automatically controlled formula starting drive of marine diesel engine.
Background
The starting system is an important component of the diesel engine, and the starting performance is one of important performance assessment indexes of the diesel engine. There are two types of starting systems for a conventional marine diesel engine: 1. a starting system driven by an air motor; 2. a mechanical air distributor controlled start system is employed.
(1) Starting system with air motor drive: the system adopts compressed air as power, when the compressed air control valve is opened, the compressed air enters the air motor to drive the air motor to rotate, the air motor drives the crankshaft to rotate, when the rotating speed of the diesel engine reaches the ignition rotating speed, the diesel engine automatically ignites to work, the compressed air control valve is immediately closed, and air supply is cut off. At the same time, the starter motor is disengaged from the meshing gear of the diesel engine. Air motors are generally used in marine diesel engines with relatively low power because of limitations in power, size, etc.
(2) Mechanical air distributor controlled start system:
the marine high-power diesel engine has heavy moving parts and large starting hysteresis torque, and is usually started by a compressed air starting system controlled by a mechanical air distributor, and a schematic diagram of the system is shown in fig. 7. The system mainly comprises the following parts: a compressed air bottle 1 ', a main starting valve 2 ', a mechanical air distributor 3 ', a starting control valve 4 ', an oil injector 5 ' and a compressed air pipeline.
The mechanical air distributor works according to the principle that:
when starting, firstly, the maintenance valve on the compressed air bottle 1 ' is opened, the starting button on the control console is pressed, and after the control console opens the main starting valve 2 ' for the opening signal (electric signal or pressure signal) of the main starting valve 2 ', the compressed air is divided into two paths: one path is main air for starting, and is directly sent to the front of a starting control valve 4' of each cylinder; the other is a small stream of control air, entering the mechanical air distributor 3'. The mechanical air distributor 3 ' controls the compressed air to sequentially open the starting control valves 4 ' according to the firing sequence, and after the starting control valves 4 ' are opened, the main starting air rushes into the air cylinder to push the piston to enable the crankshaft to rotate. When the diesel engine reaches the ignition speed, the main starting valve 2' is immediately closed, and the air supply is cut off.
Mounting structure of mechanical air distributor:
the mechanical air distributor 3 ' is constructed to ensure that the distribution plate 34 ' has at least one cylinder start control valve 4 ' in an open state at any position to ensure no dead point in the start. As shown in FIG. 9, the distributor plate 34' intersects the intake ports of the B2 and B1 cylinders, indicating that the B2 and B1 cylinders control air in the ON state. As shown in fig. 8: the distribution plate 34 'and the transmission shaft 37' are fastened together by means of a fastening nut 36 'and a washer 35'; the cross joint 39 'connects the transmission shaft 37' with the camshaft end and rotates along with the camshaft; the rest parts are fixing parts.
After being installed, the distribution disc 34 'is in clearance fit with the distributor body 31', the shell 32 'and the cover plate 33'; the distribution plate 34 'is clearance fitted to the housing 32' and has a labyrinth seal. At start-up, the compressed air enters the air distributor, because of the different cross-sectional dimensions of the two sides of the distribution disk 34 ', an axial thrust is generated which pushes the distribution disk 34 ' towards the distributor body 31 ', which achieves the seal between the distribution disk 34 ' and the distributor body 31 ', while friction occurs between the distribution disk 34 ' and the distributor body 31 '. An oil filler 5 'is usually installed in the line before the air distributor, and its function is to mix the lubricating oil in the oil filler 5' with the compressed air and lubricate the sealing surface of the distribution plate. Although the oil filler 5 'is present in the line, wear tends to occur between the distributor disc 34' and the distributor body 31 'and the housing 32'.
As shown in fig. 10 and 11, which are structural diagrams of the distributor body 31 ', and fig. 12 and 13, which are structural diagrams of the distributor disc 34', it can be seen that the dimensional tolerance, form and position tolerance, and surface quality requirements of the components are relatively high, which all affect the sealing of the air distributor and the air leakage amount, the compressed air start converts the internal energy of the compressed air into the kinetic energy of the crankshaft of the diesel engine, and the leakage amount is large, which may cause the diesel engine to be unable to start or start over time.
The number of the air outlets on the mechanical air distributor is determined by the number of single exhaust cylinders of the diesel engine, a plurality of air outlets are required to be uniformly distributed on an air distributor body with a plurality of cylinders, and if the cylinders of the same type are different, the distributors cannot be interchanged; the air distributor body and the connecting flange are usually one piece and therefore cannot be used for end face connections of different sizes. Therefore, the mechanical air distributor is of special design and has poor universality. The structure is complex.
According to the working principle and the structural characteristics of the starting system controlled by the mechanical air distributor, the following defects exist in the starting system controlled by the mechanical air distributor: 1. the mechanical air distributor has a complex structure, and the requirements of the size tolerance, the form and position tolerance and the surface finish of parts are high; the assembly, debugging and maintenance are inconvenient; 2. when the mechanical air distributor is started, the distribution disc 34 'and the distributor body 31' are in direct contact and rub against each other, so that abnormal abrasion is easy to occur, and parts are damaged; 3. the distribution disc 34 ' of the mechanical air distributor is in clearance fit with the distributor body 31 ' and the shell 32 ', and compressed air leaks; the size tolerance, the form and position tolerance, the surface quality and the assembly clearance of the parts are sensitive to the leakage amount of compressed air, and the increase of the leakage amount can cause that the diesel engine cannot be started or is started overtime; 4. the mechanical air distributor is a high-pressure working part, so that certain safety risk exists; 5. the mechanical air distributor belongs to a special design, the air cylinders cannot be interchanged when the number of the air cylinders is different, and the size and the installation size limit the interchangeability of the air distributor.
In view of the above-mentioned problems associated with the starting of both types of diesel engines, there is a need for improvement.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem: the utility model provides an automatically controlled formula starting drive of marine diesel engine, the utility model discloses overcome the problem that exists among the prior art, break through traditional marine diesel engine start air system design theory, propose a new design to high-power diesel engine starting system; the original starting air system function is decomposed, and a new method for controlling the diesel engine to realize the control logic and the control function is formed by combining a camshaft position indicator, a camshaft position detection sensor, a starting controller, an electromagnetic valve and the like, so that the control system is simple in structure and the maintainability is improved; no moving part is arranged in the control system, so that the condition of part abrasion is eliminated; the application in different machine types can be met, and the application field is expanded; provides a certain foundation for the development and the development of a follow-up novel diesel engine.
The utility model adopts the technical proposal that: the electric control type starting device of the marine diesel engine comprises a compressed air bottle, a main starting valve, starting control valves, a starting controller, an electromagnetic valve and a camshaft position detection device, wherein the starting control valves are arranged on cylinder covers of cylinders with different numbers of the diesel engine, the compressed air bottle is connected with the main starting valve, the main starting valve is controlled by a control console, and the main starting valve is respectively connected with each starting control valve through a main starting air pipe; the inlet part of the main starting air pipe is connected with the starting control valve through a control air pipe and an electromagnetic valve; the camshaft position detection device comprises a camshaft position indicator and camshaft position detection sensors, the camshaft position indicator is fixed on the end face of the diesel engine camshaft and rotates along with the diesel engine camshaft, the camshaft position detection sensors are provided with a plurality of camshaft position detection sensors according to the number of cylinders and correspond to the number of the cylinders, the camshaft position detection sensors are arranged on the end face of a camshaft hole of a diesel engine body, and the installation positions of the camshaft position detection sensors are sequentially arranged according to the number and the ignition sequence of the cylinders; the camshaft position detection sensor is connected with the electromagnetic valve through the starting controller.
The technical scheme is further limited, the camshaft position indicator is installed by taking a first cylinder of the diesel engine as a reference cylinder when installed, and the camshaft position indicator sequentially passes through the camshaft position detection sensors according to the firing sequence when rotating along with the camshaft of the diesel engine.
The technical scheme is further limited, the camshaft position indicator is made of a steel plate, the fixed end of the camshaft position indicator is fixedly connected with the center of the end face of the camshaft of the diesel engine through a bolt, and a hole for the bolt to pass through is formed in the fixed end of the camshaft position indicator.
The technical scheme is further limited, an installation cover plate for installing a camshaft position detection sensor is arranged on the end face of the camshaft hole of the diesel engine body, the camshaft position detection sensor is screwed into the installation cover plate through threads, and a certain gap is reserved between the camshaft position detection sensor and a camshaft position indicator and is used for finely adjusting the air inlet time of the diesel engine.
In order to further limit the technical scheme, the mounting cover plate is made of a steel plate.
The technical scheme is further limited, and the continuous air inlet angle of the starting air of the diesel engine is adjusted through the installation radius of the camshaft position detection sensor relative to the center of the camshaft of the diesel engine or the width of the camshaft position indicator.
In order to further limit the technical scheme, the starting controller is a 24V direct current power supply, the starting controller is mainly internally composed of a plurality of groups of photoelectric couplers and a high-power driving pipe, the plurality of groups of photoelectric couplers are connected with the high-power driving pipe, a plurality of groups of interfaces are arranged outside the starting controller, and the number of the interface groups can be increased or decreased according to needs.
The technical scheme is further limited, the electromagnetic valve is a normally closed electromagnetic valve, and the electromagnetic valve is fixed on the cylinder cover of the cylinder through a connecting block.
The utility model has the advantages compared with the prior art:
1. according to the scheme, the original starting air system is functionally decomposed, and a new method for controlling the diesel engine to realize the control logic and the control function is formed by combining the camshaft position indicator, the camshaft position detection sensor, the starting controller, the electromagnetic valve and the like, so that the system structure is simplified, and the production, assembly, debugging and overhauling difficulties of parts are reduced;
2. in the scheme, the whole is mainly realized by installing electrical components such as a camshaft position detection sensor, a starting controller, an electromagnetic valve and the like, no mechanical moving part exists in the system, no part directly generating friction exists, the condition of part abrasion is eliminated, and the failure rate of the part is very low;
3. the scheme has no clearance fit problem in the installation and movement processes of mechanical parts, and has no compressed air leakage problem, so that compressed air can be fully utilized, and the problem that a diesel engine cannot be started or is started overtime is solved;
4. in the scheme, the starting controller is powered by a 24V direct-current power supply, the voltage is within a safe voltage range, and no electric shock hazard exists during installation and debugging; the inlet part of the main starting air pipe is connected with the starting control valve through the control air pipe and the electromagnetic valve, the electromagnetic valve is installed on the corresponding cylinder cover and is connected with the starting control valve installed on the cylinder cover, so that the length of the control pipeline is greatly shortened, the installation and the connection of the control pipeline are simplified, a high-pressure control air pipeline is not arranged at the end of the cam shaft, and potential safety hazards are eliminated;
5. the scheme has strong universality and is not influenced by the machine type and the number of the cylinders, one controller can simultaneously control the starting of double-row cylinders or a plurality of diesel engines, the interchangeability is high, the occupied space is small, and the arrangement is convenient;
6. the scheme has good reliability, maintainability, safety, supportability, testability and environment applicability, meets the shipping requirement, has good universality, can be widely applied to diesel engines with different purposes and different models, can also be applied to development and design of new models and design and improvement of the starting system of the original diesel engine, has low maintenance cost and has very high popularization effect.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the device for detecting the position of a middle camshaft according to the present invention;
FIG. 3 is a schematic structural view of the mounting cover plate of the present invention;
fig. 4 is a schematic structural view of the middle camshaft position indicator of the present invention;
FIG. 5 is a schematic structural diagram of the start controller of the present invention;
fig. 6 is a schematic view of the installation structure of the electromagnetic valve of the present invention;
FIG. 7 is a schematic diagram of a prior art mechanical air distributor controlled start-up system;
FIG. 8 is a front view of a prior art mechanical air distributor;
FIG. 9 is a left side view of a prior art mechanical air distributor configuration;
FIG. 10 is a front view of a dispenser body in a prior art mechanical air dispenser;
FIG. 11 is a cross-sectional view of the A-A configuration of the dispenser body of FIG. 10 of the prior art;
FIG. 12 is a front view of a prior art distributor plate for a mechanical air distributor;
fig. 13 is a cross-sectional view of the a-a structure of the prior art dispensing disk of fig. 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements" does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Referring to fig. 1-6, embodiments of the present invention are detailed.
An electrically controlled starting device for a marine diesel engine, as shown in fig. 1, comprises a compressed air tank 1, a main starting valve 2 and starting control valves 3 arranged on cylinder covers of different numbered cylinders of the diesel engine, wherein the compressed air tank 1 is connected with the main starting valve 2, the main starting valve 2 is controlled by a control console, and the main starting valve 2 is respectively connected with each starting control valve 3 by a main starting air pipe 5. The device also comprises a starting controller 7 arranged on the diesel engine body, an electromagnetic valve 4 arranged on each cylinder cover, and a camshaft position detection device 8 arranged on the camshaft of the diesel engine; the inlet part of the main starting air pipe 5 is connected with the starting control valve 3 through a control air pipe 6 and an electromagnetic valve 4; the camshaft position detection device 8 comprises a camshaft position indicator 9 and camshaft position detection sensors 10, the camshaft position indicator 9 is fixed on the end face of a diesel engine camshaft 11 and rotates along with the diesel engine camshaft 11, the camshaft position detection sensors 10 are provided with a plurality of cylinders according to the number of the cylinders and correspond to the cylinder numbers, the camshaft position detection sensors 10 are arranged on the end face of a camshaft hole 13 of a diesel engine body, and the installation positions of the camshaft position detection sensors 10 are sequentially arranged according to the numbers and the cylinder firing sequence; the camshaft position detection sensor 10 is connected to the solenoid valve 4 via the start controller 7.
Fig. 1 shows an embodiment of single-row start, and if a double-row start is adopted, only one row of camshaft position detection devices 8 (a camshaft position indicator 9 and a camshaft position detection sensor 10) need to be added, and one start controller 7 can be shared. Similarly, if the starting controller 7 has enough signal receiving ports and transmitting ports, a plurality of diesel engines can share one starting controller 7. Therefore, the present solution is described here by taking a single-row start as an example.
Compared with the mechanical starting air distributor control scheme in the prior art, the utility model has the following new design of several parts:
1) camshaft position indicator 9: the camshaft position indicator 9 is installed by taking a first cylinder of the diesel engine as a reference cylinder during installation, and the camshaft position indicator 9 sequentially passes through the camshaft position detection sensors 10 according to an ignition sequence when rotating along with a camshaft 11 of the diesel engine.
The camshaft position indicator 9 is made of a steel plate and is in a shape shown in figure 4, the fixed end of the camshaft position indicator 9 is fixedly connected with the center of the end face of the diesel engine camshaft 11 through a bolt 12 and a gasket, and a hole for the bolt 12 to penetrate through is formed in the fixed end of the camshaft position indicator 9.
2) Camshaft position detection sensor 10: the end face of the camshaft hole 13 of the diesel engine body is provided with an installation cover plate 14 for installing the camshaft position detection sensor 10, and the installation positions of the camshaft position detection sensor 10 on the installation cover plate 14 are sequentially arranged according to the serial number and the cylinder ignition sequence.
The mounting cover plate 14 is made of a steel plate, the camshaft position detection sensor 10 is screwed into the mounting cover plate 14 through threads, a certain gap is reserved between the camshaft position detection sensor 10 and the camshaft position indicator 9 and is used for finely adjusting the air intake time of the starting air of the diesel engine, the adjustment is carried out within the required gap range, the sensitivity of the sensor sensing camshaft position indicator 9 is adjusted by adjusting the screwing depth of the camshaft position detection sensor 10, and the continuous crankshaft rotation angle of the intake air is ensured to meet the requirements. If the clearance is too large, the camshaft position detection sensor 10 senses that the rotation angle of the camshaft position indicator 9 becomes small, that is, the main starting air intake continuation angle is shortened, and the starting air amount is reduced, which affects the starting time. In addition, considering that the camshaft has a certain amount of axial play, the camshaft position detection sensor 10 may collide with the start controller 7 if the clearance is too small.
The camshaft position detection sensor 10 is used to detect the signal state of the camshaft position indicator 9 approaching and departing from the camshaft position detection sensor 10: when approaching, the camshaft position detection sensor 10 lights up the indicator lamp, transmits a signal to the start controller 7; when the camshaft position detection sensor 10 is separated, the indicator lamp is turned off, and the sensor signal is interrupted.
The camshaft position detection sensor 10 adopts market mature components, the technology is mature, and the purchase cost is low.
The diesel engine starting air intake continuation angle is adjusted by the mounting radius of the camshaft position detection sensor 10 with respect to the center of the diesel engine camshaft 11 or the width of the camshaft position indicator 9. Adjusting the width of the camshaft position indicator 9 is relatively simpler and more convenient, especially in the debugging and verification phase of the control system. The method can be widely applied to the aspects of development and design of new models and design and reconstruction of the original diesel engine starting system, and has the advantages of simple design and reconstruction, short period and low cost.
3) The start controller 7: the start controller 7 is a core component of the starting air system. As shown in fig. 5, the start controller 7 is a 24V dc power supply, and the voltage is within a safe voltage range, so there is no electric shock hazard during installation and debugging. The receiving and sending signals are 24V direct current switching value signals, and the controller sends the signals outwards from the corresponding port after receiving the signals. The starting controller 7 is provided with a plurality of groups of interfaces outside, the number of the interface groups can be increased or decreased according to needs, and the serial numbers of signal input and signal output correspond to each other. The internal control logic is simple, the starting controller 7 is mainly composed of a plurality of groups of photoelectric couplers and high-power driving pipes, the plurality of groups of photoelectric couplers are connected with the high-power driving pipes, the sensor is connected to the photoelectric couplers of the controller and then connected with the high-power driving pipes, and the driving pipes are connected with the electromagnetic valve 4. When the camshaft position detecting sensor 10 sends a signal, the signal firstly passes through the photoelectric coupler (anti-interference) and then reaches the high-power driving tube, after the driving tube receives the signal, a signal is sent to the electromagnetic valve 4, and the electromagnetic valve 4 is opened.
Safety measures such as signal interference prevention, high-voltage overcurrent protection, short-circuit protection and the like are arranged in the starting controller 7, so that the controller is prevented from being damaged. The starting controller 7 has small volume and light weight, and is convenient to arrange and install on the diesel engine; the wiring is simple, the cylinder number of the sensor and the cylinder number of the electromagnetic valve are only required to be corresponded during wiring, and the interface serial number of the controller does not influence normal use.
The components adopted by the controller are common components in the market, the technology is mature, and the purchase cost is low.
4) And (4) electromagnetic valve: as shown in fig. 6, the electromagnetic valve 4 is a normally closed electromagnetic valve, i.e., is closed when no signal is received and is opened when a signal is received. The electromagnetic valve 4 is fixed on the cylinder cover of the cylinder through a connecting block 15.
The electromagnetic valve 4 is arranged on a control pipeline of the starting control valve 3, when a signal of the starting controller 7 is received, the electromagnetic valve 4 is opened, control air is used for opening the starting control valve 3, and main starting air is flushed into the air cylinder; when the signal is interrupted, the electromagnetic valve 3 automatically resets, the control air is cut off, and the air inlet is stopped.
In the system, a small air flow is divided into a small air flow at the inlet part of a main starting air pipe 5 of a slave cylinder cover, passes through a control air pipe 6 and is connected with a starting control valve 3 through an electromagnetic valve 4, so that the length of a control pipeline is greatly shortened, and the installation and connection of the control pipeline are simplified. And the camshaft end is not provided with a high-pressure control air pipeline any more, so that potential safety hazards are eliminated.
The utility model discloses the theory of operation: when starting, the maintenance valve on the compressed air bottle 1 is opened; ensuring that the start controller 7 is powered on and self-checking is complete (indicator light green). After a starting button on a control console is pressed, the control console opens the main starting valve 2 by an opening signal (an electric signal or a pressure signal) of the main starting valve 2, and compressed air is divided into two paths: one path is main air for starting, and the main air is directly sent to each cylinder starting control valve 3 to be standby; the other branch is control air which is branched from a main starting air pipe 5 entering the cylinder and is sent to the electromagnetic valve 4 through a control air pipe 6. The starting controller 3 receives a position switch signal detected by the camshaft position detection sensor 10, sends a switch signal to the corresponding electromagnetic valve 4, opens the electromagnetic valve 4, controls air to open the starting control valve 3, and actively starts air to rush into the cylinder to push the piston to rotate the crankshaft. Once the diesel engine is ignited to work, the main starting valve 2 is closed immediately, and the air supply is cut off. The start controller 7 maintains the power on state.
Wherein, on the diesel engine, as shown in fig. 6, the camshaft position indicator 9 rotates clockwise, the ignition sequence of the diesel engine is 1-4-7-6-8-5-2-3-1, and the number represents the number of the cylinder to be ignited. The cylinder numbers of a common diesel engine are 1, 2 and 3 … … in sequence from the output end. If the machine is a V-shaped machine, the left hand side is arranged in the A row, and the right hand side is arranged in the B row when viewed from the output end; the serial number of the cylinder is still from the first cylinder at the output end, and the row A is sequentially A1, A2 and A3 … …; and the row B is sequentially B1, B2 and B3 … ….
The utility model overcomes the problem that exists among the prior art breaks through traditional marine diesel engine and starts the air system design theory, is to high-power diesel engine starting system provides a new design. The original starting air system function is decomposed, and a new method for controlling the diesel engine to realize the control logic and the control function is formed by combining the camshaft position indicator 9, the camshaft position detection sensor 10, the starting controller 3, the electromagnetic valve 4 and the like, so that the control system is simple in structure and the maintainability is improved; no moving part is arranged in the control system, so that the condition of part abrasion is eliminated; the application in different machine types can be met, and the application field is expanded; provides a certain foundation for the development and the development of a follow-up novel diesel engine.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The electric control type starting device of the marine diesel engine comprises a compressed air bottle (1), a main starting valve (2) and starting control valves (3) arranged on cylinder covers of cylinders with different numbers of the diesel engine, wherein the compressed air bottle (1) is connected with the main starting valve (2), the main starting valve (2) is controlled by a control console, and the main starting valve (2) is respectively connected with each starting control valve (3) through a main starting air pipe (5), and the electric control type starting device is characterized in that: the device also comprises a starting controller (7) arranged on the diesel engine body, an electromagnetic valve (4) arranged on each cylinder cover of the cylinder, and a camshaft position detection device (8) arranged on the camshaft of the diesel engine; the inlet part of the main starting air pipe (5) is connected with the starting control valve (3) through a control air pipe (6) and an electromagnetic valve (4); the camshaft position detection device (8) comprises a camshaft position indicator (9) and camshaft position detection sensors (10), the camshaft position indicator (9) is fixed on the end face of a diesel engine camshaft (11) and rotates along with the diesel engine camshaft (11), the camshaft position detection sensors (10) are provided with a plurality of cylinders according to the number of the cylinders and correspond to the number of the cylinders, the camshaft position detection sensors (10) are arranged on the end face of a camshaft hole (13) of a diesel engine body, and the installation positions of the camshaft position detection sensors (10) are sequentially arranged according to the number and the ignition sequence of the cylinders; the camshaft position detection sensor (10) is connected with the electromagnetic valve (4) through the starting controller (7).
2. The electrically controlled starter device for a marine diesel engine according to claim 1, characterized in that: the camshaft position indicator (9) is installed by taking a first cylinder of a diesel engine as a reference cylinder during installation, and the camshaft position indicator (9) sequentially passes through the camshaft position detection sensors (10) according to an ignition sequence when rotating along with a camshaft (11) of the diesel engine.
3. The electrically controlled starter device for a marine diesel engine according to claim 2, characterized in that: the camshaft position indicator (9) is made of a steel plate, the fixed end of the camshaft position indicator (9) is fixedly connected with the center of the end face of the diesel engine camshaft (11) through a bolt (12), and a hole for the bolt (12) to penetrate through is formed in the fixed end of the camshaft position indicator (9).
4. The electrically controlled starter device for a marine diesel engine according to claim 1, characterized in that: the end face of the camshaft hole (13) of the diesel engine body is provided with an installation cover plate (14) used for installing a camshaft position detection sensor (10), the camshaft position detection sensor (10) is screwed into the installation cover plate (14) through threads, and a certain gap is reserved between the camshaft position detection sensor (10) and a camshaft position indicator (9) and is used for finely adjusting the air inlet time of the starting of the diesel engine.
5. The electrically controlled starter device for a marine diesel engine according to claim 4, characterized in that: the mounting cover plate (14) is made of a steel plate.
6. The electrically controlled starter device for a marine diesel engine according to claim 1, characterized in that: the diesel engine starting air intake continuous angle is adjusted by the installation radius of the camshaft position detection sensor (10) relative to the center of the diesel engine camshaft (11) or the width of the camshaft position indicator (9).
7. The electrically controlled starter device for a marine diesel engine according to claim 1, characterized in that: the starting controller (7) is a 24V direct-current power supply, the starting controller (7) is mainly composed of a plurality of groups of photoelectric couplers and a high-power driving tube, the plurality of groups of photoelectric couplers are connected with the high-power driving tube, a plurality of groups of interfaces are arranged outside the starting controller (7), and the number of the groups of the interfaces can be increased or decreased according to needs.
8. The electrically controlled starter device for a marine diesel engine according to claim 1, characterized in that: the electromagnetic valve (4) is a normally closed electromagnetic valve, and the electromagnetic valve (4) is fixed on a cylinder cover of the cylinder through a connecting block (15).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022505173.2U CN213540600U (en) | 2020-11-03 | 2020-11-03 | Electric control type starting device of marine diesel engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022505173.2U CN213540600U (en) | 2020-11-03 | 2020-11-03 | Electric control type starting device of marine diesel engine |
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| CN202022505173.2U Active CN213540600U (en) | 2020-11-03 | 2020-11-03 | Electric control type starting device of marine diesel engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263542A (en) * | 2021-12-31 | 2022-04-01 | 潍柴动力股份有限公司 | Air control method |
| CN116006335A (en) * | 2023-02-27 | 2023-04-25 | 陕西柴油机重工有限公司 | Diesel engine car blowing system based on compressed air jigger |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263542A (en) * | 2021-12-31 | 2022-04-01 | 潍柴动力股份有限公司 | Air control method |
| CN116006335A (en) * | 2023-02-27 | 2023-04-25 | 陕西柴油机重工有限公司 | Diesel engine car blowing system based on compressed air jigger |
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