Controller mode marine diesel engine with remote control

 

(57) Abstract:

Usage: the operation of vessels with diesel engines, equipped trosikom remote control. The inventive controller operation mode of the diesel engine includes a control unit 1, the sensor speed Tacho 3 propeller shaft 4, the sensor feedback 5 position of the slats 6 of the fuel pump 7 and the actuator 9. The latter provided with a device 11 with rollers for bending of the cables 10 and acts on the cable remote control diesel. 3 Il.

The invention relates to shipbuilding, in particular to the operation of vessels with diesel engines, equipped trosikom remote control.

It is known a device for controlling the mode of operation of marine diesel engines [1] in which the sensor speed is mechanically connected (by mechanical traction) with control valve acting on the actuating mechanism made in the form of a hydraulic servomotor having a reverse hydraulic communication with the spool, and directly moving rail fuel pumps. A disadvantage of this device is that the actuator Kee is in the navigation quite often, when any outside interference in the management of diesel engine is a hindrance (when mooring, the locking, the divergence of the courts, and so on), failure of the actuator and its jamming may result in restricted movement of the fuel rail that can create an emergency situation. All this reduces the reliability of the control engine. A disadvantage of this device is the complexity of the design of the actuator and the complexity of the changeover to another program regulation.

Known control mode (speed) marine diesel engine [2] 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 pump of diesel engine, and the output from the second input of the control unit and the actuator with the actuator, and the output control unit is connected to the input drive of the actuator.

The disadvantage of this controller is its low reliability, since the actuator is continuously connected with rail fuel pumps and constantly on edstone on the engine in conditions of high temperature and vibration, the impact of fuel and oil, in the conditions of the possibility of damage during maintenance and repair of diesel, at a distance from the pilothouse, reduces its reliability and ease of maintenance; limitations on the size of the actuator because of financial pressure when it is placed on the engine cause the need for selection of the component parts of the actuator, for example, a drive with more minimum dimensions than on reliability and durability.

The purpose of the invention is the improvement of the design of the controller operation mode of ship engine, improving the reliability and ease of maintenance of diesel regulators with trosikom remote control.

The aim is achieved in that in the known regulator mode marine diesel engine with a remote control 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 of the first input of the control unit, sensor feedback, the input of which is connected with rail, fuel pump of diesel engine, and the output from the second input of the control unit, and the actuator with the actuator, and the output control unit connection of a driving pulley, associated with the control handle, and the driven pulley associated with the speed control of diesel driven pulley through a cable connected with the drive pulley and the actuating mechanism is in the form of an element with rollers mounted for movement and bending of the cable rollers.

In Fig. 1 shows a diagram of the regulator of Fig. 2 and 3 scheme of action of the actuator on the cables of the remote control system of the diesel.

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 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 of diesel engine 7, the control unit 2 issues a control signal to the actuator 8 of the actuator 9, acting on the cables 10 remote control with the device 11 with the rollers.

The actuator is located outside the engine room, in a location convenient for service is the LTE control 12, with the handle 13. In a full-time remote control system also includes drive pulley 14 interlocked with operating handle 13, the cables 10 and the driven pulley 15 nominal speed controller 16 diesel 7.

The controller operates as follows. After power-on power supply 1 and the inclusion of the control unit 2, the circuit of the tachometer generator and the sensor circuit feedback 5 closed circuit comparing the control unit 2. If you currently ship diesel engine 7 operates at a nominal mode (full load ship, deep water, direct course, steady speed, no wind and waves), the magnitude of the electrical signals in the comparison circuit from the Tacho-generator 3 and the feedback sensor 5, equal, and regulation does not occur. The handle 13 of the remote control station occupies the position of "full speed" (Fig. 1). The device 11 of the actuator 9 Flex cables 10 rollers (Fig. 2). 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 soysal speed. Thus, the signal from the feedback sensor 5 does not change, since the position of the slats 6 of the fuel pump 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 actuator 8 of the actuator 9, which moves the roller device 11 to the right (Fig. 1). In the case of marginal onlinenote driving conditions the rollers will be moved to the rightmost position shown in Fig. 3. When the control handle 13 and the driving pulley 14 will remain in the same position ("full speed"), and the ratio of the lengths of the cables will change due to the fact that the right wire is straight, and the left bent rollers of the actuator, therefore, the driven pulley 15 rotates in the direction of decreasing the fuel supply to the anglemax(the maximum angle regulation), respectively, will move the rail 6 of the fuel pump and will decrease the magnitude of the signal from the feedback sensor 5. The regulatory process occurs as long as the magnitude of both signals (from the Tacho-generator 3 and from the feedback sensor 5) are equal, i.e., until they become equal to the same amount by which the programmed control unit 2">

Here is a diagram of the operation of the regulator when entering shallow water. In addition to shallow water, the regulator can respond to any cause, which would increase the resistance to movement of the vessel, for example, wind, excitement, etc.

The equipment of the actuator device with rollers for bending the wires and the corresponding impact on the modes of operation of the diesel allows the Navigator to easily change the mode of operation of the diesel in its sole discretion, even if the actuator fails and jamming, as by changing the position of the handlebars diesel cables can move freely on the rollers of the actuator, whichever position were rollers. It improves the reliability of management diesel.

This embodiment allows you to set the actuator outside of the engine room, convenient for maintenance location and favorable conditions, and not on the engine, i.e. in conditions of high temperature and vibration, exposure to fuel and oil, the possibility of damage during maintenance and repair of diesel. In addition, removed limitations on the size and weight of the actuator, Thu is CNY the drive. All this improves the reliability and serviceability of the regulator.

CONTROLLER MODE MARINE DIESEL engine WITH a REMOTE CONTROL 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 pump of diesel engine, and the output from the second input of the control unit, and the actuator with the actuator, and the output control unit coupled to the output drive of the actuator, characterized in that the remote control system is made in the form of a driving pulley connected with the control handle, and the driven pulley associated with the speed control of diesel driven pulley through a cable connected with the drive pulley, and the actuator is made in the form of a device with rollers installed with the possibility of bending of the cable rollers.

 

Same patents:

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

The invention relates to systems for remote automated control (DAU) main ship engines (DG) running on the propeller controllable pitch

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

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: according to proposed method, radius rk of vehicle propulsor, namely, drive wheel or drive sprocket, and vehicle gross weight G, are measured, and using load brake, engine torque Me id changed. Engine torque Me and engine speed n set by means of governor are measured for each value of torque Me, and fuel consumption for each value of engine torque Me is measured and, basing on results of measurements, curve is plotted showing dependence of power Ne from engine torque Me. Drawbar force Pdr of traction vehicle is found from expression Pdr= Metr·i/rk)-Pfmax, where ηtr is transmission efficiency; I is transmission gear ratio; Pfmax is traction vehicle maximum rolling resistance found from expression Pfmax=fmax·G, where fmax is maximum rolling resistance coefficient, and G is gross weight of traction vehicle. Skid coefficient δ of traction vehicle is found and result are transformed into electric signals which are sent to computer to plot curves showing dependence of drawbar force Pdr from engine torque Me for different gears of vehicle and dependence of skid coefficient δ from drawbar force Pdr of traction vehicle after which maximum drawbar force Pdrmax created by propulsors of traction vehicle with gross weight is determined and signals are formed and sent to computer to determine skid coefficient from dependence of skid coefficient δ from vehicle drawbar force Pdr, for each gear of vehicle signals are formed and sent to computer to determine corresponding value of torque Me1 maximum drawbar force Pdrmax dependence of drawbar force Pdr from torque Me, then signal is formed and sent to computer to determine power Ne1 for maximum drawbar force Pdrmax by value of torque Me1 from curve showing dependence of engine power Ne from engine torque Me, value of power Ne1, thus found, is compared with value of power Ne from engine specifications and if they do not coincide, engine speed n and transmission gear ratio I are adjusted.

EFFECT: improved efficiency of use of vehicle engine owing to increased accuracy of measurement of engine power with account of specific operating conditions of vehicle, reduced labor input at measurements and processing of results of measurements.

2 cl, 1 dwg

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: invention relates to testing and regulating of internal combustion engines. According to proposed method, radius rk of vehicle propulsor is measuring and as well as vehicle gross weight G, and using load brake, engine torque Me is changed. Engine torque Me and engine speed n are measured. Fuel consumption for each value of engine torque Me is measured and basing on results of measurement curve is plotted showing dependence of engine power Ne from engine torque Me, tangential traction force Pt of vehicle propulsor on radius rk is found from expression Pt= Me·ηtr·i/rk, where ηtr is transmission efficiency; I is transmission gear ratio, speed V of vehicle engine is found from expression V=3,377·rk·n/i, maximum tangential traction force Pt max, created by propulsors of vehicle with gross weight G is found from expression Pt maxmax·G, where ϕmax is maximum adhesion coefficient of propulsors with ground. Results are transformed into electric signals, signals are sent to computer and, basing on the signals curves are plotted showing dependence of traction force Pt from engine torque Me and dependences of vehicle speeds V for different gears of vehicle from value of tangential traction force Pt and after determining maximum tangential traction force Pt max for each gear of vehicle, signals are formed and sent to computer to determine corresponding speed Vmax 1 for maximum tangential traction force Pt max from relationship of vehicle speed V and value of tangential traction force Pt and corresponding value of torque Me1 for maximum tangential traction force Pt max from dependence of tangential traction force Pt from torque Me after which signals are formed and sent to computer to determine power Ne for maximum tangential traction force Pt max by value of torque Me1 from curve showing dependence of engine power Ne from engine torque Me. If value of maximum tangential traction force Pt max exceeds value of tangential traction force Pt1 for first gear, signals are formed and sent to computer to determine power Ne1 and torque Men1 from expressions Ne1=Pt max·V1/270·ηtr1 and Men1 Pt max·rk/ ηtr1·i1, where V1 is speed of vehicle in first gear, i1 is transmission gear ratio in first gear; ηtr1 is transmission efficiency in first gear, rk is vehicle propulsor radius. Power values found by calculations and from curve, are compared, and if they do not coincide, speed n of engine and transmission gear ratio I are adjusted.

EFFECT: improved efficiency of use of vehicle internal combustion engine owing to increased accuracy of measurement of engine power with account of specific operating conditions of vehicle, reduced labor input at measurements and processing of results of measurements.

1 dwg

FIELD: motors and pumps.

SUBSTANCE: invention relates to motor engineering industry, and particularly to gas-turbine boost motors. The method of motor lifetime increase and fuel consumption decrease on motor ships with gas-turbine boost motors is specific by the motor operation set at minor revolutions as compared to the operating revolutions. Simultaneously rotation frequency and exhaust gas temperature are decreased, and travel and disc ratio of propeller screw is increased.

EFFECT: increase of motor lifetime and fuel consumption decrease.

2 cl, 4 tbl

FIELD: automotive industry.

SUBSTANCE: invention relates to automotive control instrumentation. Proposed control instrument controls the device incorporated with the vehicle to generate setting for vehicle device, control the latter using said setting and settle conflicts between several settings for one device. In the case of conflict, at least one of two settings is expressed in units other than those of another setting. Control instrument converts physical magnitudes of settings to unify units. Prior to converting physical magnitude of setting, the latter is memorised by control instrument. Conflict settled and setting required inverse conversion of physical magnitude, control instrument outputs memorised setting to make a device setting. Said device can made a vehicle traction force source. In setting generation, first and second settings are generated. First setting is base don driver manipulations (S100). Second setting is not based on driver manipulations. When engine makes the vehicle traction force source, first setting "a" is expressed in torque units (S200). Second setting "A" is expressed in traction force units (S400). On converting physical magnitudes, conversion into units of traction forces (S500) is carried out. First setting "a" (S300) is memorised. If first setting is selected after conflict settling (no S600), memorised first setting "a" (S900) is set for the engine.

EFFECT: better vehicle controllability.

3 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: piston engine comprises engine control system and valve timing phase variation system. Intake pipe houses blow valve while cylinder accommodates intake and discharge valves driven by camshaft. Blow receiver is arranged between blow valve and intake valve. In compliance with this invention, blow valve is opened by partial or complete displacement of throttle driven by common armature of several electromagnets in response to engine control system and valve timing variation system instructions, while intake and discharge valves are driven with no part of valve timing system. Note here that intake valve opens before blow valve to communicate combustion chamber with blow receiver but closes after, before or at a time with blow valve after BDC of intake stroke.

EFFECT: improved operating performances.

13 cl, 13 dwg

FIELD: transport.

SUBSTANCE: invention relates to working machines with ICE engaged with stepless transmission. Working machine comprises ICE (1C) and stepless transmission (IVT) engaged therewith. At least, one sensor generates output signal representing ICE load in real time. At least, one data processing electric circuit serves to control transmission power subject to ICE threshold and real loads. In compliance with one version, at least, one data processing electric circuit includes ICE control unit (ECU) connected with ICE (1C), and transmission control UNIT (TCU) engaged with stepwise transmission (IVT). Engine control unit (ECU) feeds output signal to transmission control unit (TCU) that represents load in real time. Transmission control unit controls transmission power output subject to threshold load and real time load. Invention relates to method of operating said working machine.

EFFECT: ruled out ICE engine overload.

17 cl, 3 dwg

FIELD: transport.

SUBSTANCE: invention may be used in working machines comprising internal combustion engine with stepless transmission. Working machine comprises ICE with output and stepless transmission engaged with ICE output. Stepless transmission features adjustable power input-to-power output ratio. Torque control input device controlled by operator outputs output signal. Said torque control input device is connected with one electric processing circuit configured to control ICE power output and power input-to-power output ratio depending upon aforesaid output signal of said torque control input device. Invention relates to method of operating said working machine.

EFFECT: stable engagement at low speed.

20 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: method refers to operation of transmission (1) of an automobile with speed change box (62). The automobile has internal combustion engine (2), which includes turbo-supercharger (22) and a supercharging device of supplementary compressed air to suction air path (8) of internal combustion engine (2). The method consists in the fact that time interval, duration, pressure and/or volume of supplementary compressed air subject to supercharging to air path (8) of internal combustion engine (2) is controlled depending on desired power, actual number of revolutions of internal combustion engine (2), value of load of internal combustion engine (2) and movement speed of the automobile. In addition, time interval, duration, pressure and/or volume of supplementary compressed air subject to supercharging to suction air path of the internal combustion engine is controlled depending on operations as per the change of transfer ratio of speed change box (62).

EFFECT: control of the air supply device together with the speed change box.

15 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed device comprises section 2 to control conditions of heat source 1 mounted at vehicle, section 5 to calculate required heat, section 4 to estimate fuel feed and section 6 to increase heat emission. Section 5 to calculate required heat calculates expected amount of heat required for heat consuming device 3 that uses heat emitted by source 1. Section 4 to estimate fuel feed estimates expected fuel feed from source 1 to heat consuming device 3 Section 6 to increase heat emission requests section 2 to increase emission of heat from source 1 when amount of heat estimated by section 4 is lower than that calculated by section 5. Invention covers the design version of said control device.

EFFECT: reduced loss of heat.

26 cl, 6 dwg

FIELD: engines and pumps.

SUBSTANCE: control method of an exhaust gas temperature during interruption of fuel feed is intended for engine (10) of transport vehicle (100) actuating transmission (22) of transport vehicle (100). The method consists in alternation of two or more operating modes, at least one of which maintains higher exhaust gas temperature than one or several other operating modes. Engine (10) is disengaged from transmission (22) in one of the operating modes alternated with the operating mode of the engine as a compression brake for creation of a brake moment.

EFFECT: maintaining exhaust gas temperature at the level providing possible operation of an exhaust gas neutralisation system in acceptable temperature range.

5 cl, 5 dwg

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: invention is designed for determining condition of internal combustion engine. According to proposed method, piston speed and acceleration are determined and indicator diagram of force acting onto piston is plotted, depending on angle of turning of crankshaft journal around its axis of rotation, or heat characteristics of internal combustion engine are taken and, basing on heat calculations, indicator diagram stated above is plotted and then inertia forces of reciprocating masses of piston and crank gear of each cylinder on internal combustion engine are determined depending on acceleration or deceleration of piston. Pressure of fuel combustion products onto piston is measured, and changes of pressure of combustion products onto piston depending on angle of turning of crankshaft journals are determined and, with due account of measured values of pressure, value of forces of reciprocating masses of piston and crank gear of internal combustion engine in direction of cylinder axis are determined and indicator diagram is plotted after which, for each turn of crankshaft, mean summary tangential force (Tm) acting onto crank depending on torque (Mtm) on crankshaft is determined: Tm=Mtm/R where R is radius of crank of crankshaft. Then mean summary forces along axis of piston and crank gear P are determined depending on angle α of crankshaft turning and angle β of deflection of connecting rod from cylinder axis P=Tm/Sin(α+β)/Cosβ. Basing on obtained results, for each half-turn of crankshaft summary value of tangential force on crank of crankshaft, summary value of pressure of combustion products of fuel mixture in cylinder, and summary inertia force of reciprocating masses of piston and crank gear for each cylinder are determined as difference between mean summary forces P for mean summary tangential force Tm and summary pressures of combustion products of fuel mixture depending on angle of crankshaft turning, after which flywheel is installed on engine shaft and rotation of crankshaft at constant angular velocity is provided. Size of flywheel is determined to provide summary antitorque moment to crankshaft rotation equal to summary torque of acceleration of crankshaft under action of summary inertia force calculated as stated above.

EFFECT: increased efficiency of engine and its service life by optimization of operation conditions of internal combustion engine.

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: invention is designed for checking condition of internal combustion engine. According to proposed method, pressure of fuel combustion products onto piston is measured and changes of said pressure on piston depending on angle of turning of crankshaft journal and with due account of measured pressure values, reciprocating forces of moving masses of piston and engine crank gear in direction along axis of engine cylinder are determined with plotting of indicator diagram after which, for each half-turn of crankshaft, mean summary tangential force acting onto crank depending on crankshaft torque is determined. Basing on obtained results, summary value of tangential force on crankshaft crank for each half-turn of crankshaft is determined, as well as summary value of pressure of fuel mixture combustion products in cylinder and summary inertia forces of reciprocating masses of piston and crank gear for each cylinder is determined as difference between mean summary forces for mean summary tangential force and summary pressure forces of fuel mixture combustion products depending on angle of crankshaft turning are found after which flywheel is mounted on engine shaft and rotation of crankshaft with constant angular velocity is provided. Size of flywheel is chosen to provide summary crankshaft rotation resistance torque equal to summary torque caused by acceleration of crankshaft rotation under action of summary inertia force calculated as stated above. Counterweights are mounted on crankshaft. Centrifugal force on counterweight at its rotation with crankshaft is equal to unbalanced centrifugal forces if inertia of rotation masses at steady state operation of engine, and torque appearing on counterweight at rotation is equal to longitudinal torque of unbalanced forces of separate cylinders if summary resistance torque is equal to mean indicated summary torque of engine.

EFFECT: increased efficiency and service life of engine by increasing stability of operation of internal combustion engine.

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: according to proposed method, value of pressure of fuel combustion products onto piston and changing of said pressure onto piston depending on angle of turning of crankshaft journal around its of rotation with account of measured values of pressure and determined values of inertia forces of reciprocating moving masses of piston and engine crank gear in direction along axis of cylinder of internal combustion engine are measured and indicator diagram is plotted after which, for each half-turn of crankshaft, mean summary tangential force acting onto crank, depending on torque on crankshaft, it determined. Then mean summary forces along axis of piston and crank gear, depending on angle of turning of crankshaft, are found. All journals of crankshaft rotate in one direction at constant angular velocity owing to flywheel fitted on crankshaft. Size of flywheel is chosen to provide summary torque of resistance to rotation of crankshaft equal to summary acceleration torque of crankshaft under action of summary inertia force found as difference between mean summary force for mean tangential force and summary pressure force of fuel mixture combustion products, depending on crankshaft turning angle.

EFFECT: increased efficiency and service life of engine by improving efficiency of operation.

FIELD: transport engineering; internal combustion engines.

SUBSTANCE: according to proposed method of control of internal combustion engine, mainly, transport internal combustion engines, air is fed into combustion chamber by means of throttle device, mainly, throttle valve. Leaned-out fuel-air mixture is delivered into combustion chamber through fuel evaporation control system. First of all, amount of fuel delivered through fuel evaporation control system is determined and depending on amount of fuel in leaned-out fuel-air mixture and total amount of injected fuel, amount of additionally inject fuel by means of valve-type nozzle at first mode at intake stroke and at second mode, at compression stroke, is determined. At second mode, either additional amount of fuel for injecting leaned-out fuel-air mixture is injected into combustion chamber and ignited by spark plug, or if leaned-out fuel-air mixture is capable of igniting from spark of spark plug, no additional fuel is injected into combustion chamber. To implement the method, use is made of internal combustion engine with control unit including control element, mainly, flash memory.

EFFECT: provision of minimum possible consumption of fuel and minimum discharge of noncombusted fuel into ambient medium.

7 cl, 1 dwg

FIELD: mechanical engineering; piston machines.

SUBSTANCE: proposed resonance piston machine with crank-and-connecting rod mechanism has variable inertia moment flywheel, clutch, flyweights and leverage designed for stepless changing moment of inertia of vibratory system, shaft angular velocity sensor, ambient temperature transmitter, barometric pressure transmitter, clutch position sensor of variable inertia moment flywheel, microprocessor control system, unit to set clutch movement law of variable inertia moment flywheel. Microprocessor control system contains unit with mathematical model of operation of resonance piston machine, first comparator unit and second comparator unit. Output signals of shaft angular velocity sensor, ambient temperature transmitter, ambient barometric pressure transmitter, clutch position sensor of variable inertia moment flywheel are applied to inputs of unit with mathematical model of operation of resonance piston machine. Applied to first input of first comparator unit is calculated value of shaft angular velocity of piston machine corresponding to resonance mode of operation at measured values of ambient temperature and barometric pressure. Output signal of shaft angular velocity sensor is applied to second input of first comparator unit. Applied to first input of second comparator unit is calculated value of position of clutch of variable inertia moment flywheel corresponding to resonance mode of operation at measured values of ambient temperature and barometric pressure, and for resonance value of angular velocity of piston machine shaft, and to second input of second comparator unit, output signal of sensor of clutch position of variable inertia moment flywheel. Signals from outputs of first and second comparator units are supplied correspondingly to inputs of first and second actuating-and-regulating devices smoothly changing velocity of piston machine shaft and position of clutch of flywheel with variable moment of inertia to provide minimum irregularity factor of piston machine shaft rotation. When this condition is met, piston machine is set to resonance. Signal from output of microprocessor control system is applied to input of unit setting clutch movement law of flywheel with variable moment of inertia, and output signal from this unit is applied to input of second comparator unit.

EFFECT: provision of automatic maintenance of resonance mode of operation of piston machine.

2 cl, 9 dwg

FIELD: engines and pumps.

SUBSTANCE: design for erection of disc of pulse generator includes the following: key groove (14), key part (16) and fastener (18). Key groove (14) is made in end surface (10) of rotating wall (9). Key part (16) is provided on disc of pulse generator (P). Disc of pulse generator (P) is attached to rotating wall (9) by means of fastener (18). Key part (16) is made of arc-shaped band-like part (16a) and pair of connecting parts (16b). Arc-shaped band-like part (16a) protrudes in the bent shape from end surface of disc of pulse generator (P). Arc-shaped band-like part (16a) is engaged with key groove (14). Connecting parts (16b) provide connection between the disc of pulse generator (P) and opposite ends of arc-shaped band-like part (16a). Longitudinal directions of key groove (14) and arc-shaped band-like part (16a) are located along radius of disc of pulse generator (P).

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

13 cl, 17 dwg

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