초록 ▼

In a controlled ignition internal combustion engine, two temperature sensors, one of which is placed in the farthest position relative to the spark plug and the other in the vicinity of the spark plug in a cylinder, generate signals the difference of which is significant for the detection of the kno

In a controlled ignition internal combustion engine, two temperature sensors, one of which is placed in the farthest position relative to the spark plug and the other in the vicinity of the spark plug in a cylinder, generate signals the difference of which is significant for the detection of the knock phenomenon. As the temperature differential of the two sensors exceeds a preselected magnitude, a warning signal may be delivered on the dashboard, or the controlled ignition system of the engine may receive a command for reducing the angle of advance of ignition until ordinary, non-knock conditions are restored for the engine.

대표청구항 ▼

A controlled-ignition internal combustion engine of the type having a spark plug and a piston for each cylinder, said engine having an ignition system for causing electric discharge at the spark plug with a determined basic regulation of ignition advance relative to the upper dead center of the resp

A controlled-ignition internal combustion engine of the type having a spark plug and a piston for each cylinder, said engine having an ignition system for causing electric discharge at the spark plug with a determined basic regulation of ignition advance relative to the upper dead center of the respective piston, said engine also having a device for detecting the occurrence of the knock phenomenon in an explosion chamber of at least one of the engine cylinders, said device comprising two separate temperature sensors separately arranged in exposed relation in said chamber, one of said sensors being arranged in a zone of said chamber farthest from the spark plug in which generally the phenomenon of incipient knocking is experienced, the other of said sensors being arranged in a zone of said chamber near the spark plug in which said incipient knocking phenomenon does not occur, said device further comprising an electronic circuit for receiving and comparing signals coming from said sensors so as to detect if the engine is operating under knock conditions.