JP4495026B2 - Diesel engines, especially large diesel engines with control systems that include electronic modules - Google Patents

Abstract

The diesel engine has electronic modules (10) and a control system (1) with an inter modular communication bus arranged between them for transferring information. The bus system has a connection point (150) for replacement modules (100) to be attached. The control system automatically conditions the modules with a specific operating program and actualization of operating parameters such that replacement module apart from the actively running control system is in a no-load operation. During failure of an active module the replacement module is immediately operationally substituted for the malfunctioning module. Each connection point of the module at the inter modular bus system can be substituted, before-conditioned replacement module has begun. Cylinders of the engine are controlled such as the functions and environmental settings and each cylinder is assigned to a module of the control system, and each control module covers an identically trained logic circuit of two functional parts. The first functional part is the controlling of an assigned cylinder such as environmental functions, and the second controls redundancy such that part of the engine performance remains in case of an error due to the redundancy. An INDPENDENT CLAIM is included for a method.

Description

The present invention relates to a diesel engine, in particular a large diesel engine with a control system comprising a plurality of electronic modules according to the preamble part of claim 1. The invention also relates to a method for operating a diesel engine according to the invention and to the use of this engine. The large engine can be a 4-cycle engine as well as a 2-cycle engine.

A diesel engine having an engine control device is known from EP 0 899 297 that is operated by a control system comprising a plurality of electronic modules. In an engine such as this diesel engine, a local function, that is, a function related to a cylinder and an entire function, that is, a function related to the entire engine is controlled by a control system. In a further developed large diesel engine (unpublished European Patent Application No. 04405073.0), the control system includes a plurality of electronic modules with identically designed logic circuits. Each cylinder is associated with one of the electronic modules , and the logic circuit includes a first functional part and a second functional part, respectively. Use a first function portion, associated cylinder that are controlled. The function of the whole engine is controlled by the whole of the plurality of electronic modules, i.e. the second functional part of the electronic module of at least a part of the plurality of electronic modules cooperates with the second functional part of another electronic module. The entire engine is controlled in a redundant manner .

  When using a large engine to move an ocean-going vessel, it is necessary that at least a portion of the engine power is still available when individual parts of the control system or engine components fail. Furthermore, overall engine control must continue to function to a sufficient extent. In such a failure, the individual cylinders can fail because the engine can still be operated at reduced power. Continuous operation of the engine is achieved by controlling it in a redundant manner and also by installing multiple individual components to create redundancy in the machine parts. In addition to the main control that actively controls the overall engine, it cooperates passively with respect to the overall engine control, but can be switched to the active control state without delay if necessary. Two controls are allowed to operate. With redundancy, at least a portion of the engine is maintained in the event of a failure. Only one electronic module for local control is provided for each cylinder. For overall functionality with electronic system components, there must be at least twice as many identical system components in the control system.

Other provided redundancy, so that it can generate again redundancy in the case of the electronic module failure, it is necessary to prepare an alternate electronic module.

An object of the present invention may alternatively electronic module is removed from the ready state, it is possible to perform insertion and preparation of alternative electronic modules in an advantageous manner, it is to provide examples for diesel engines. This object is met by an engine as defined in claim 1.

Diesel engines, particularly large diesel engines, have a control system that includes a plurality of electronic modules. Information can be transmitted between multiple electronic modules using an inter-module bus system. Alternative electronic modules can be used to repair faults in the control system. The intermodule bus system is provided with at least one connection point for alternative electronic modules. By the control system, an alternative electronic module is connected is automatically adjusted in advance. Thus, specific operation program is loaded to the alternate electronic module, operating parameters Ru allowed to start. Things preconditioned alternative electronic module is inserted at the connection point for the alternative electronic modules intermodule bus system.

The dependent claims 2 to 7 relate to special embodiments of the diesel engine according to the invention. Claims 8 and 9 relate to a method for operating an engine according to the invention, while the use of the engine is the subject of claim 10 .

  The present invention will be described below with reference to the drawings.

Diesel engines, for example, 2-cycle diesel engine shown partially in FIG. 1 comprises a plurality of cylinders 2, in the diesel engine, the entire wide functionality local function and engine related cylinder 2 is controlled It is .

In addition to the control system 1, components appearing in the example of the engine shown in FIG. 1 include an intake / exhaust valve 21, a valve member 211 , an intake / exhaust system 20 having a passage 212 through which air is supplied and combustion exhaust gas is drawn. the fuel 300 liquid, controlled injection member 32 and the nozzle 22 (nozzle tip 22a, 22b) by being injected into the combustion chamber 23 located between the valve member 211 and the piston 24, the fuel 300 to control the volume or time An injection system 30 for feeding in, pumps 31 and 41 for supplying fuel 300 and / or control medium 400 that can be moved via a controlled feed member 42 to the intake and exhaust valves 21, and so-called With the accumulator 43 for the control medium 400 and the accumulator 33 for the fuel 300 which are “common rails” These accumulators 33 and 43 are connected to the pumps 31 and 41 on the one hand and to the injection system 30 and the intake / exhaust system 20 of all cylinders 2 on the other hand.

The pumps 31 and 41 and the members 32 and 42 are connected to the control system 1 via connection lines 310, 410, 320, and 420 for signal transmission. A further connecting line 210 is connected to the sensor of the intake / exhaust valve 21.

In addition to these components of the engine which are not shown in the figure, the hydraulic system with members for carrying out injection and intake and exhaust , local and overall functions are synchronized with the rotation of the shaft driven by the engine angle determining apparatus for, and there is a device for adjusting and air supply control at the time of startup of the fuel supply and intake and exhaust.

FIG. 2 shows details of a special control system 1 for a diesel engine according to the invention. The control system 1, when limited to the illustrated, the electronic module 10, in particular the electronic module 10a for control, 10b, 10c, 10d, 10e, comprises 10f and alternative electronic module 100, an electronic module listed here All are connected to an inter-module bus system 15 comprising redundancy by two bus systems 15a and 15b. Information is transmitted between the electronic modules 10 including the connected alternative electronic module 100 using the intermodule bus system 15. Further components of the control system 1 are the block 7 for the first part of the overall function (eg ship alarm system, security system, rotational speed control) and the actuators 8a, 8b, 8c and 9a for the further part of the overall function, 9b. Block 7 is controlled redundantly, i.e. via two bus systems 17a, 17b and by simultaneous operation of two electronic modules 10a and 10b. Even if one of the electronic modules 10a or 10b fails, the block 7 continues to receive signals necessary for control.

It may be advantageous if one or more alternative electronic modules 110 are connected to the intermodule bus system 15. Experience shows that when an electronic module is operated in idle mode (voltage is applied to the electronic module, but no load is applied), it is exposed to unfavorable environmental influences (condensation due to moisture, temperature changes) in the storage location. Longer life can be expected than alternative electronic modules . Alternative electronic modules 100 connected to the inter-module bus system 15 are conveniently monitored for usefulness by the control system.

The plurality of electronic modules 10 all have or are provided with an operation program specifically designed for the diesel engine to be controlled, as well as the alternative electronic module 100 connected to the inter-module system 15. . In principle, the individual electronic modules, although only a portion of the operating parameters in consideration of the ability of the operation must be available, a plurality of electronic modules 10 and alternative electronic module 100 also receives the same operating parameters . The incorporation of a plurality of electronic modules 10 into the control system 1 is established, for example, by connecting cables with plugs and connectors, and the ability of the individual electronic modules 10 to function is achieved by connecting them. The ability of individual electronic modules 10 to function is recognized and operated by plugging these plugs into the connection points provided for them.

The individual electronic modules 10 are arranged and connected in the control system 1 so that only replacement steps for replacing them at the failed electronic module 10 need be performed. When the removal of one of the individual electronic modules 10, as briefly described in the introductory part of this specification, the control system by virtue of the redundancy remain operable state (Sunawa Chi, logical in two functional portions minutes say of the circuit, associated cylinder is controlled by a first function portion, the entire engine functions are controlled by a second functional portion).

The replacement of an alternative electronic module 1 00 can be implemented for each electronic module 10. At least one connection point 150 is provided for the alternative electronic module 100 in the intermodule bus system. Connecting alternative electronic module 100 taken out of the reservoir, one of the alternative electronic module is pre-adjusted by the control system, the electronic module 10 operation program written for diesel engines of the plurality to be controlled Alternatively, it is loaded from the control system 1 and specific values are associated with the operating parameters. Connected alternative electronic module 100 operates in idle should mode, when the electronic module 10 during operation fails, since it is preconditioned, alternative electronic module 100 is immediately usable.

Alternative electronic modules in the adjustment Le takes significantly longer than the time required for the replacement module. Therefore, in the diesel engine according to an alternative electronic module 100 that has been pre-adjusted accompanied present invention, first, the loading of the operating program and operating parameters of the alternative electronic modules after performing the replacement module in the module between bus systems 15 It saves time compared to a diesel engine that must be implemented.

The alternative electronic module 100 connected to the inter-module bus system 15 in FIG. 2 forms a connection point to the peripheral device 5 as a “gateway” , and the gateway includes a converter 105 and a control device 6. Ru can be performed 6 and exchange of information between the control system 1. The “gateway” is a component of the system that protects the inter-module bus system 15 from electrical effects that can cause damage and external interference from the environment. "Gateway" is allow passage of only signals required for information exchange.

As a general rule, that have more alternative electronic module 100 is incorporated into the reservoir. These alternative electronic module 100, they can be used immediately, and does not require adjustment before use, i.e., a failure electronic module 10 in a manner which does not require to start the loading and operating parameters of the operating program Suitable for direct replacement.

The control system 1 according to the invention of a diesel engine is provided in particular for use on a seagoing ship in which the engine rotates the drive shaft of the ship. The electronic module 10 has inputs and outputs therefor, through which information is exchanged with, inter alia, ship alarm systems, security systems and ship drive shaft electronic rotational speed controllers, whereby the control system Ru is further controlled under use of this information.

The actuators 8a, 8b, 8c, 9a, and 9b exist according to the number that generates redundancy. These are connected to the electronic module 10, ie electronic modules 10c, 10d and 10e, via bus systems 18a, 18b and 18c. Adaptation in sound actuator operation when one of the actuators fails is achieved by using the corresponding electronic module 10. The actuators 8a and 8b include three pumps for servo oil including 8c, and the actuator 9a includes a pump for fuel 300 supplied to the accumulator 33 including 9b. For example, if the actuator 8a fails, adaptation in the operation of sound actuators 8b and 8c is achieved by using the corresponding electronic modules 10d and 10e of the control system 1. In such a measure, servo oil requirements are met using two of the three actuators by correspondingly increasing the supply capacity of healthy actuators 8b and 8c. If one of the electronic modules 10c, 10d or 10e associated with 8a, 8b, 8c fails, the corresponding actuator 8a, 8b or 8c stops operating and the actuators 8a, 8b, 8c Due to the redundancy, it will not lead to the failure of the whole engine.

1 is a view of the center of a large diesel engine, in particular a two-cycle diesel engine. 1 is an extremely simplified control system for a diesel engine according to the invention. FIG.

Claims (10)

A diesel engine with a control system (1) including a plurality of cylinders (2) a plurality of electronic modules respectively associated with (10), said plurality of electronic using inter-module bus system (15) module (10) information between is transmitted, Oite diesel engines are available for the alternative electronic module alternative electronic module has failed (10),
At least one connection point (150) is provided in the inter-module bus system (15) for at least one alternative electronic module (100);
At least one alternative electronic module (100) is connected to the at least one connection point (150), and the connected alternative electronic module (100) is preconditioned by the control system (1). In order to obtain the same operation program and operation parameters for the alternative electronic module (100) and the plurality of electronic modules (10), the pre-adjustment is performed by one of the plurality of electronic modules (10) or the control system ( 1) loading an operation program and operation parameters from idling mode in which the alternative electronic module (100) connected to the connection point (150) is energized but not loaded. have been operated, one of the electronic module during operation (10) has failed if the connection Diesel engines, characterized in that in a state where the substitute electronic module connected to the (150) (100) can be used immediately in place of the electronic module (10) that said failure. The diesel engine according to claim 1, wherein
The diesel engine is a diesel engine before Symbol entire functions related local functions and the overall diesel engines relates to the cylinder (2) is controlled by said control system (1),
Each of the electronic modules (10) comprises a logic circuit of the same design having a first functional part and a second functional part;
The local functions relating to the cylinder (2) is controlled by the first functional part,
The entire function for the entire diesel engine, wherein are controlled by the second functional part generally by redundant form, in the case of a fault, and at least a part of the engine output is maintained by redundancy, diesel engine. Wherein a diesel engine according to claim 1 or 2, wherein the local function and overall function, by operating simultaneously the electronic module using the same operating program (10), to be executed Diesel engine. The diesel engine according to any one of claims 1 to 3, wherein the alternative electronic module (100) connected to the inter-module bus system (15) is information with the control system (1). Diesel engine, characterized in that it establishes one connection point as a "gateway" to a peripheral device (5) that can be replaced . The diesel engine according to any one of claims 1 to 4, wherein
Failure to replace the electronic module, the failure just like it Re to implement the removal process in the electronic module where the plurality of electronic modules (10) are connected with said control system (10),
Even when for alternating electronic module (10) failed alternative electronic module (100) that is the connection, before Symbol control system by redundancy of the control system (1) (1) is still be operating Diesel engine characterized by Diesel engine according to any one of claims 1 to 5,
Before SL plurality of electronic modules (10), the following components of the diesel engine, i.e.,
An injection system (30) for feeding liquid fuel (300) into said associated cylinder (2);
An intake and exhaust system ( 20 ) for the associated cylinder (2),
Pumps (31, 41) for supplying the fuel and control medium (400);
An accumulator (43) for the control medium and an accumulator (33) for the fuel, the so-called “ common rails” being connected to the pump, the injection system and the intake / exhaust system. Accumulator, which is
A hydraulic system having members for performing fuel injection and supply / exhaust ;
An angle determination system for synchronizing the local and global functions with the rotation of a shaft driven by the diesel engine;
Wherein the device and each of which is the signal transmission connection for the control of the fuel supply and air supply and exhaust adjusting and air supply at the time of starting, the diesel engine. The diesel engine according to any one of claims 1 to 6, wherein the diesel engine is an engine for ocean-going vessels. A method of operating a diesel engine according to any one of claims 1 to 7, a plurality of alternative electronic module (100) is stored, a for taking in the reservoir alternative electronic module that has been pre-adjusted A method of operating, characterized in that these alternative electronic modules are exchanged at a connection point (150) for the alternative electronic modules of the inter-module bus system (15). 9. The operating method according to claim 8 , characterized in that the alternative electronic module (100) connected to the inter-module bus system (15) is monitored by the control system (1) for its ability to operate. How to drive. 8. Use of a diesel engine according to any one of claims 1 to 7 for rotation of a ship drive shaft in an ocean-going ship, wherein the electronic module (10) has a signal input through which the Use of a diesel engine, in which an electronic module can receive information from the ship 's alarm system, security system and ship's drive shaft electronic rotational speed controller for control of said control system (1).

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