Apparatus for controlling ignition timing for inte

专利名称：Apparatus for controlling ignition timing for

internal combustion engine

发明人：Yuichi Kashimura,Noboru Sugiura申请号：US06/712770申请日：19850318公开号：US04625692A公开日：19861202

摘要：An angle of an ignition timing for a specific cylinder is gradually advanced. Acomparison is made between the previous output of a knock detection circuit for thecylinder having its angle advanced and the present output thereof by a comparator. Thecomparator evaluates an occurrence of a knock when an output signal therefromchanges drastically. The signal from the comparator rewrites the knock evaluationreference value in each cylinder written in the memory. When an output from the knocksensor is larger than that of the memory, an ignition timing retard angle signal is outputfrom the comparator. As a result, the apparatus of the present invention can controlignition timing without errors due to the deterioration with age or manufacturing errors,as it can correct knocking detection sensibility of the apparatus.

申请人：HITACHI, LTD.

代理机构：Antonelli, Terry & Wands

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