INTERNAL COMBUSTION ENGINE CONTROLLER AND IGNITER

To solve the problem that in an engine comprising an auxiliary chamber with an ignition plug therein, since an amount of heat generated in the auxiliary chamber tends to be large, it is necessary to suppress abnormal combustion, but adding a sensor to the spark plug tends to increase a manufacturing...

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Bibliographische Detailangaben
Hauptverfasser:	SARUWATARI MASAYUKI, OSHIRYOJI KAZUHIRO, KUMANO KENGO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	To solve the problem that in an engine comprising an auxiliary chamber with an ignition plug therein, since an amount of heat generated in the auxiliary chamber tends to be large, it is necessary to suppress abnormal combustion, but adding a sensor to the spark plug tends to increase a manufacturing cost of a spark plug.SOLUTION: An ECU 2 comprises: an auxiliary chamber temperature estimation unit 21 that estimates a temperature of an auxiliary chamber 42; and an ignition control unit 22 that when the estimated temperature of the auxiliary chamber 42 is included in a medium temperature region below a first setting temperature, delays ignition timing by a first decrease degree defined by an amount of change in the ignition timing with respect to the temperature of an auxiliary combustion chamber as the temperature of the auxiliary chamber 42 rises.SELECTED DRAWING: Figure 7 【課題】点火プラグを内部に有する副室を備えるエンジンでは、副室内の発熱量が大きくなりやすいので異常燃焼を抑える必要があるが、点火プラグにセンサを追加すると点火プラグの製造コストが上がりやすい。【解決手段】ＥＣＵ２は、副室４２の温度を推定する副室温度推定部２１と、推定された副室４２の温度が第１設定温度以下である中温領域に含まれる場合に、副室４２の温度が高くなるにつれて、副燃焼室の温度に対する点火時期の変化量で規定される第１減少度合いで点火時期を遅らせる点火制御部２２と、を備える。【選択図】図７