Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1996-08-08
1998-07-07
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Fuel injection system
123480, 701104, 701105, 364133, F02D 4126, G06F 1516
Patent
active
057752966
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
Present invention relates to an arrangement and a method for a combustion engine control system, said control system including a distributed computer network.
PRIOR ART
Computerised control systems of combustion engines often includes a system- or main computer, in motor vehicles conventionally located at the fire wall, which computer controls the ignition system, the fuel supply system or both. If the control system should be implemented in a considerably larger type of combustion engines, such as stationary electric power units or marine engines exceeding 500 hp, a rather extensive wiring are needed. These engines are often produced in relatively small series where the wiring is made manually for each individual engine, which is very time consuming and expensive.
In EP,B,189404 (=U.S. Pat. No. 4,841,450) is shown a system for distributed computer networks where each individual node computer could be configured by the main computer. In this type of system is each node computer configured by soft-ware control at the start of the control system. The concept is that each node computer should be pre-programmed for a number of different operating modes, and that each node computer should be freely interchangeable. At start up the main computer sends digital signals, via a CAN-bus, which signals will configure each node computer. It is also mentioned that the node computers could be configured by a code plug or switching means. The disadvantage is that the main computer will be limited for the intended function, and will not be able to be transferred to other type of systems.
SUMMARY OF THE INVENTION
The main object of the invention is to create a control system for combustion engines including a main computer and a number of node computers, which main computer as well as node computers in an unrestricted manner could be interchanged between different engines, the engines having 4,6,8,9,12,16 or 18 cylinders, and where the node computers of each engine could be interchanged, among themselves.
Another object of the invention as implemented in control systems for combustion engines including a distributed computer network system, is to enable a simple replacement of node computers, which node computers without any sophisticated means could be configured for the intended node function An essential advantage is that each node computer could be configured by a small size screw driver, or automatically when a new substituting computer module is mounted in the node housing, which will facilitate replacement of a malfunctioning computer module of a node computer.
In larger combustion engines used in stationary electric power plants or as a propulsion unit for ships, it is essential that malfunctioning node computers could be replaced quickly on site, without needing any special equipment for the configuration of replacing node computers.
Another object of a first embodiment is that the configuration of the node computers will be made according a logical manner for each individual engine, where the engine operator only have to know the number of cylinders of the engine in question, and which node computer which should be replaced.
Another object of a second embodiment is that the configuration will be made automatically when the computer module of a node computer is replaced. The configuration of the node number and the total number of cylinders of the engine will then be made once and for all in a lower bottom part of a node housing preferably mounted stationary at the engine. The computer module of the node computer being integrated into a upper lid which could be mounted in the lower bottom pan.
Yet another object is to obtain in a simple manner a double check of the proper configuration of each node computer, as to the correct setting of each node computer of the type of engine used and that the amount of node computers required for the engine have been installed and configured.
This type of configuration of the node computers will also configure the main computer to the present nu
REFERENCES:
patent: 4841450 (1989-06-01), Fredriksson
patent: 4884204 (1989-11-01), Seibt et al.
patent: 5001642 (1991-03-01), Botzenhardt et al.
patent: 5267542 (1993-12-01), Keskula
patent: 5339782 (1994-08-01), Golzer et al.
patent: 5444626 (1995-08-01), Schenk
patent: 5454095 (1995-09-01), Kraemer et al.
Almstedt Bo F. Nilson
Bjorquist Cunnar L. C.
Goras Anders J.
Argenbright Tony M.
Mecel AB
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