Internal-combustion engines – Starting device – Condition responsive control of starting device
Patent
1991-12-12
1993-10-26
Dolinar, Andrew M.
Internal-combustion engines
Starting device
Condition responsive control of starting device
123198DC, F02D 4500
Patent
active
052556425
ABSTRACT:
The invention is directed to a method for operating control apparatus during delayed shutoff after switching off the ignition of an internal combustion engine. This method protects the battery as far as possible and for this method, three principles are applied individually or in any desired combination but preferably all together. The first principle provides that the delayed-shutoff functions are no longer carried out, as has been conventional, until a fixed pregiven time duration is reached; instead, the functions are either interrupted when values of special variables reach a fixed pregiven threshold or a threshold fixed in dependence upon operating variables in advance of switch-off of the engine is reached. The particular monitored physical variable and the threshold value corresponding thereto are each so selected that, when the actual value reaches the threshold value and accordingly, the delayed-shutoff function is interrupted or not even started, this occurs without essentially influencing the new start capacity of the engine. The second principle provides that delayed-shutoff functions, and especially those which require a high current flow, are not carried out simultaneously but instead sequentially. The third principle provides that the current-supplying capacity of the battery is monitored and as soon as it becomes apparent that this current-supplying capacity is just sufficient for a new start of the cooled-down engine, the delayed-shutoff functions are interrupted or not even begun.
REFERENCES:
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patent: 5024205 (1991-06-01), Gatza et al.
Arnold Herbert
Pischke Jurgen
Dolinar Andrew M.
Ottesen Walter
Robert & Bosch GmbH
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