Apparatus for controlling ignition timing for inte

专利名称：Apparatus for controlling ignition timing for

internal combustion engines

发明人：Toshio Ishii,Noboru Sugiura申请号：US06/597750申请日：19840406公开号：US04513718A公开日：19850430

摘要：An ignition timing control apparatus for an internal combustion engine whereinan ignition timing &thgr; of at least one cylinder of the engine is retarded (or advanced)by a little amount &Dgr; &agr; to intentionary check the generation sensitivity of a knockdetection signal, that is, the detection sensitivity of knocking, then a knock judging level ismodified thereby to judge as to whether knock is produced or not on the basis of themodified knock judging level, in order to correct and control the ignition timing &thgr; ofthe engine. As a result, irrespective of the non-uniformity of properties of the knockdetection device and an internal combustion engine due to the deterioration with age ormanufacturing errors, correct judgement of knocking can always be insured.

申请人：HITACHI, LTD.

代理机构：Antonelli, Terry & Wands

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