Horology: time measuring systems or devices – Controlled by a disparate device – Engine
Patent
1995-05-11
1997-09-09
Miska, Vit W.
Horology: time measuring systems or devices
Controlled by a disparate device
Engine
368113, 123478, 123492, G04F 800, F02B 300
Patent
active
056663293
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to an electronic control device for controlling a fuel injection starting time and a fuel injection duration in an internal combustion engine. Such electronic control devices can be used to perform a variety of functions. One activity, in particular a control function, is carried out according to the counter state of a counter. This activity can take place for example when the counter is counting or when it has reached a specific counter state. The counter is connected to a clock source which controls the counting in the counter. The range of application of known electronic control devices is limited by the relatively rigidly prescribed possibilities.
SUMMARY OF THE INVENTION
The control device according to the invention has, in contrast, the advantage that both the starting time of the counter and the counting interval can be reset variably and always to a respective desired value during operation as a function of desired parameters so that the control functions can be instantaneously influenced during ongoing operation. This means that a device which is actuated by the control device according to the invention can be operated in an optimum way as a function of the aforesaid parameters. In particular, the electronic control device is suitable for operating an internal combustion engine, preferably in order to realize an injection control and/or an ignition control. In the case of injection control, the start of injection and the duration of injection are to be realized as a function of the crankshaft angle and further parameters. Since, according to the invention, a first register is assigned to the counter, into which register a first, prescribable, in particular variable, register value can be input. It is possible to feed this register value as an instantaneous counter state to the counter by means of a loading device in order to set it. An event device is assigned to the loading device and triggers, by means of an event signal, the setting of the counter by starting the loading device as a function of a given occurrence of an event. The aforesaid functions can be realized in an optimum way. If the counting interval of the counter corresponds to the duration of injection, the duration of injection can be set correspondingly as a function of the register value which is written into the first register. The injection process occurs when the counter starts and ends when it has reached a specific counter state. However, the counter is not started until the event device triggers the setting of the counter, as a function of the prescribable occurrence of an event, by starting the loading device. When the event occurs, the first register value of the first register is fed to the counter by means of the loading device. This counter then starts with a counter state corresponding to the register value. By means of the prescribable occurrence of the event, the injection time can thus be determined with the aforesaid injection control of an internal combustion engine. Since it is possible to influence the occurrence of the event, and it is also possible to vary the register value and thus the counting period of the counter, in the aforesaid example of the motor vehicle injection control it is possible to match the injection time and duration of injection to the continuously changing operating conditions while a vehicle is being driven.
According to one embodiment of the invention there is provision for the counter-state evaluation unit to carry out the respectively appropriate activity when the counter starts, during counting and/or when a prescribable final counter state has been reached. It is therefore possible to trigger a control function only when the counter starts, to carry out a control function during the counting process and/or to carry out the control function when a prescribable final counter state has been reached. At the same time, it is possible for the counter to increment or, according to a different exemplary embodiment, for the counter to dec
REFERENCES:
patent: 3809029 (1974-05-01), Wakamatsu et al.
patent: 4245605 (1981-01-01), Rice et al.
patent: 4267810 (1981-05-01), Wesemeyer et al.
patent: 4285314 (1981-08-01), Kiencke et al.
patent: 4354239 (1982-10-01), Kanegae
patent: 4363307 (1982-12-01), Amano et al.
patent: 4942559 (1990-07-01), Fleck et al.
patent: 4952367 (1990-08-01), Porter et al.
Buro Davide
Eitrich Frank-Thomas
Strugala Michael
Miska Vit W.
Robert & Bosch GmbH
Striker Michael J.
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