Ignition timing control device for internal combustion engine

Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 機関のアイドル運転性、燃費を損なうことな く、触媒を早期に活性化するように点火時期を制御す る。 【構成】 運転条件から基本点火時期を算出する手段２ と、始動時の冷却水温から触媒の活性に必要な点火時期 の基本遅角量を算出する手段３と、吸気絞弁をバイパス して空気を増量するアイドル制御弁の開度から前記遅角 量の補正値を演算する手段４と、始動後の経過時間に応 じて前記遅角量の補正値を演算する手段５と、前記基本 遅角量をこれら両補正値に基づいて補正してアイドル遅 角量を算出する手段６と、このアイドル遅角量にもとに 前記基本点火時期を修正する手段７とを備える。 (57) [Summary] [Purpose] The ignition timing is controlled so as to activate the catalyst early without impairing the idle operation performance and fuel consumption of the engine. [Configuration] Means 2 for calculating a basic ignition timing from operating conditions And means 3 for calculating the basic retardation amount of the ignition timing required for activation of the catalyst from the cooling water temperature at the time of starting, and the retardation amount from the opening degree of the idle control valve that bypasses the intake throttle valve and increases the air. 4 for calculating the correction value of the above, a means 5 for calculating the correction value for the retard amount according to the elapsed time after the start, and the basic delay amount for correcting the delay amount based on both of these correction values. Means 6 for calculating the angle amount and means 7 for correcting the basic ignition timing based on the idle retard amount are provided.

Inventors

• 👤 Hiroshi Iwano
• 👤 岩野　　浩
• 👤 Hatsuo Nagaishi
• 👤 初雄 永石

Bibliographic Details