Controller mode marine diesel

 

(57) Abstract:

Usage: shipbuilding, in particular the operation of vessels with diesel engines mainly with mechanical remote control. The inventive controller operation mode of the diesel engine with mechanical remote control includes a control unit 2, the gauge of number of turns, which applied Tacho 3 propeller shaft 4, a feedback sensor 5 (the position of the slats 6 of the fuel pump and the actuator 9, acting on the rail 6 of the fuel pumps. Between the sending element of the actuator 9 and the rail 6 fuel pumps installed electromagnetic clutch 10, and between the feedback sensor 5 and the rod 6 fuel pumps installed fibrogenesis element 8. 1 Il.

The invention relates to the field of shipbuilding, in particular to the operation of vessels with diesel engines mainly with mechanical remote control.

It is known a device for controlling the mode of operation of marine diesel engines, in which the sensor speed is mechanically connected (by mechanical traction) with a distribution valve, affecting ispolnitelnaya and directly moving rail fuel pumps.

A disadvantage of this device is that the actuator is continuously connected with rail fuel pumps and continuously it acts depending on the driving conditions, while in the navigation quite often there are situations when any outside interference in the management of diesel engine is an obstacle: when mooring, the locking and so on ; the failure of the actuator and its jamming (and the corresponding restriction of the movement of the fuel rail) can even create an emergency situation. All this leads to reduced reliability of control of a diesel engine. A disadvantage of this device is the complexity of the design of the actuator and the need to readjust it to another program regulation.

Known control mode (speed) marine diesel that contains the control unit in the form of an element of comparison with the amplifier, sensor speed, made in the form of a Tacho-generator, whose input is connected with the propeller shaft and the output with the first input of the comparison element, sensor feedback, the input of which is connected with rail fuel pumps, and the output from the second input of the comparison element, the actuator electrically connected to ispolnitelnogo mechanism.

The disadvantage of this controller is its lack of reliability, because the actuator is continuously connected with rail fuel pumps and continuously it acts depending on the driving conditions. In addition, in practice it was observed failures of the feedback sensors, accompanied by the termination of the signal and jamming due to the large number of cycles of micrometric movements caused by vibration of Reiki fuel pumps, which indicates low reliability of sensors that are directly related to rail fuel pumps.

The aim of the invention is to improve the reliability of control diesel and reliability regulator.

This goal is achieved by the fact that the regulator mode marine diesel that contains the control unit from the comparison circuit, the gauge of number of turns made in the form of a Tacho-generator, whose input is connected with the propeller shaft and the output with the first input of the control unit, sensor feedback, the input of which is connected with rail fuel pumps, and the output from the second input of the control unit, the actuator is electrically connected with rail fuel pumps, and the output control unit connected to the surrounding part of the actuator and rail fuel pumps, and fibrogenesis element installed between the sensor feedback and rail fuel pumps, and the control unit is made with extra output associated with an electromagnetic clutch.

The drawing shows a diagram of the controller.

The controller includes a power supply 1, which converts AC ship's mains to DC low voltage to power the control unit 2, which receives electrical signals from the sensor speed, which applied Tacho 3 propeller shaft 4, and from the feedback sensor 5 (the position of the slats 6 of the fuel pump of diesel engine 7). The feedback sensor 5 receives movement from the rail 6 of the fuel pump through fibrogenesis element 8 mounted between the feedback sensor 5 and the rod 6 of the fuel pumps. The control unit 2 issues a control signal to drive the actuator 9, acting on the rail 6 of the fuel pump through an electromagnetic clutch 10. The electromagnetic clutch 10 is installed between the sending element of the actuator 9 and the rail 6 of the fuel pumps. The power supply unit 1 and control unit 2 is installed in the wheelhouse near the standard remote control preregulator effect sensor circuit feedback 5 closes with a comparison circuit of the control unit 2, and also provides power to the electromagnetic clutch 10, which connects the actuator 9 with rail 6 of the fuel pumps. If you currently ship diesel engine 7 operates at nominal conditions (deep water), then the magnitude of the signals in the comparison circuit of the control unit 2 from the Tacho-generator 3 and the feedback sensor 5, equal and regulation does not occur. If the vessel enters the area with complicated driving conditions, for example in shallow water, the resistance to movement of the vessel increases, which causes a decrease in the speed of the vessel. When this propeller becomes hydrodynamically more "heavy" and diesel 7, working on their external characteristics with a constant (nominal) frame fuel in the cylinders are loaded and slightly reduces the number of revolutions. Thus, the signal from the feedback sensor 5 does not change, because the position of the slats 6 fuel pumps remained the same, and the signal from the Tacho-generator 3 changes in accordance with the decrease in the number of revolutions. Therefore, the control unit 2 in order to equalize the signals, supplies power to the electric actuator 9, which through an electromagnetic clutch 10 will shift rail 6 fuel pumps to decrease the CC regulation occurs until while the magnitude of both signals (from the feedback sensor 5 and Tacho 3) are equal, i.e., until they become equal to the same amount by which the programmed control unit 2 for the depth of the fairway. At the exit of the vessel in deep water is the reverse process of regulation. When disconnecting the regulator of the electromagnetic clutch 10 is de-energized and disconnects the actuator 9 from the rail 6 fuel pumps, i.e., the regulator almost instantly ceases to have any impact on the operation of diesel engine 7.

Here is a diagram of the operation of the regulator when the output is in shallow water, but shallow controller can respond to any cause, which leads to increased resistance to movement of the vessel, such as wind, waves, etc.

The use of a magnetic coupling as the transmitting link from the actuator to the rail, fuel pumps, providing detaching the actuator from Reiki fuel pumps when the clutch is de-energized (in particular, when you turn off the controller) allows, especially in cases of emergency, to almost instantly stop the impact of the regulator on the diesel, which increases the reliability of the control is necessary, or in the absence of needs in an optimal regulation, allows to save the life of the regulator and, therefore, increases its reliability.

Use vibromassage element as the transmitting link from Reiki fuel pumps to sensor feedback prevents the sensor feedback from breakage and jamming due to abrasion mutually moving parts of the sensor caused by micromovements (vibration) Reiki fuel pumps, which increases the reliability of the regulator.

CONTROLLER MODE MARINE DIESEL that contains the control unit from the comparison circuit, the gauge of number of turns made in the form of a Tacho-generator, whose input is connected with the propeller shaft and the output with the first input of the control unit, sensor feedback, the input of which is connected with rail fuel pumps, and the output from the second input of the control unit, the actuator is electrically connected with rail fuel pumps, and the output control unit is connected to the input of the electric actuator, wherein the controller is equipped with an electromagnetic clutch, installed between the sending element of the actuator and rail fuel pumps, and fibrogenesis element, the mouth of the additional output, associated with an electromagnetic clutch.

 

Same patents:

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5 cl, 5 dwg

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FIELD: mechanical engineering; internal combustion engines.

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FIELD: mechanical engineering; internal combustion engines.

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FIELD: transport engineering; internal combustion engines.

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7 cl, 1 dwg

FIELD: mechanical engineering; piston machines.

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2 cl, 9 dwg

FIELD: engines and pumps.

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EFFECT: development of design for erection of disc of pulse generator, at which high positioning accuracy and manufacturability is provided.

13 cl, 17 dwg

FIELD: engines and pumps.

SUBSTANCE: reduction method of content of nitrogen oxides (NOx) in exit gases is intended for internal combustion engine (10) installed on transport vehicle and containing at least one cylinder (11), inlet air supply pipeline (12), outlet pipeline (14) for removal of exit gases to exit gas neutralisation system (40) used to reduce the hazardous emission level of internal combustion engine (10). Engine includes exit gas recirculation system (80) supplying the exit gases from outlet pipeline (14) to inlet pipeline (12) of internal combustion engine (10). After outlet pipeline (14) in flow of exit gases there installed in series is turbine (54) of turbosupercharger (50) and turbine (60) of turbocompound, which are used at least as two energy converters (54, 60) to absorb the energy of exit gases. Control of internal combustion engine (10) operation in high and/or average load mode is performed so that at certain output power it can operate with increased load and reduced rotation frequency of crankshaft in comparison to rotation frequency usually chosen for the above certain output power. Temperature rise of exit gases, which is achieved due to operation of internal combustion engine (10) with reduced rotation frequency of crankshaft, is performed up to the first temperature, which is sufficient for actuation at least of two turbines (54, 60) and setting of certain exit gas temperature after those turbines. Cooling of exit gases having increased temperature on two turbines (54, 60) is performed to the temperature in the desired temperature range contributing to NOx neutralisation in exit gas neutralisation system (40). Variation of rotation frequency of crankshaft of internal combustion engine (10) is performed depending on NOx content in exit gases after they pass through exit gas neutralisation system (40) and/or depending on design capability of exit gas neutralisation system (40) as to NOx neutralisation. Nitrogen oxide content reduction device has been described.

EFFECT: reduction of hazardous emission level and economy of fuel is provided.

14 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed method consists in defining the initial moment of combustion in every cylinder 3, comparing it with preset magnitude and varying the moment of fuel injection into cylinders 3 in case defined moment differs from preset magnitude. Note here that exhaust gas temperature of every cylinder is measured to vary duration of fuel injection into cylinders 3 on the basis of exhaust gas temperatures to equalise power produced by said cylinders. Invention covers also the system for diesel engine cylinders balancing.

EFFECT: equalised power produced by different cylinders.

22 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: invention may be used in automotive industry. Propose device comprises electric channel (1) including primary transducer (2), signal inverter (3), indicator (4) and power supply (5). Said primary transducer (2) is composed of following mechanism made up of rpm centrifugal regulator (7) lever (6) and inductive displacement sensor (8) built in corrector case (9). It comprises second electric channel (10) including extra primary transducer (11), signal inverter (12) and indicator (13). Said extra primary transducer (11) is composed of following mechanism made up of rpm centrifugal regulator and inductive displacement sensor (15) lever (14) built in fuel feed corrector case screw (16).

EFFECT: simultaneous control of diesel feed rate and load.

1 dwg

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