초록 ▼

An internal combustion engine ignition timing control system with knock control detects the knocking in an engine and the acceleration of the engine speed to control the ignition timing of the engine. The ignition timing of the engine is retarded in response to the detection of knocking in the engin

An internal combustion engine ignition timing control system with knock control detects the knocking in an engine and the acceleration of the engine speed to control the ignition timing of the engine. The ignition timing of the engine is retarded in response to the detection of knocking in the engine and the amount of retard is increased as compared with the amount of retard provided under the steady-state condition when the knocking occurs during the acceleration operation of the engine and the frequency of occurrence of knocking is high.

대표청구항 ▼

An ignition timing control system with knock control for internal combustion engines, comprising: a knocking sensor for detecting the occurrence of knocking in an engine and producing signals indicative thereof; an acceleration sensor for detecting an acceleration condition of said engine and produc

An ignition timing control system with knock control for internal combustion engines, comprising: a knocking sensor for detecting the occurrence of knocking in an engine and producing signals indicative thereof; an acceleration sensor for detecting an acceleration condition of said engine and producing signals indicative thereof; a control unit, responsive to detection signals from said knocking sensor and said acceleration sensor, for retarding ignition timing of said engine by a given retard angle, said control unit determining the presence or absence of knocking in accordance with the signals from said knocking sensor and determining whether present knocking signals exceed a predetermined level thereby constituting heavy knocking, said control unit further determining the presence or absence of acceleration in accordance with the signals from said acceleration sensor and increasing the amount of retard per each determined knocking whenever both heavy knocking and acceleration are determined, but maintaining said given retard angle if either determination has not been made in accordance with the results of said determinations, and said control unit generating a control signal corresponding to the amount of retard; and ignition means for igniting said engine at an ignition timing corresponding to said control signal from said control unit.