초록 ▼

In an internal combustion engine in which overheating phenomena in the explosion chamber are to be monitored and prevented, a temperature sensor is arranged in the region far from the sparking plug to send signals to a governing electronic circuitry which is arranged for modifying the ignition advan

In an internal combustion engine in which overheating phenomena in the explosion chamber are to be monitored and prevented, a temperature sensor is arranged in the region far from the sparking plug to send signals to a governing electronic circuitry which is arranged for modifying the ignition advance responsively to abnormal situations and for restoring normal running conditions as soon as the disturbing phenomena have ceased to occur.

대표청구항 ▼

A device for checking the overheating phenomena in the interior of the explosion chamber of an internal combustion engine of the controlled-ignition type and equipped with an ignition system for producing an electric discharge at a sparking plug of a cylinder relative to the upper dead center of a r

A device for checking the overheating phenomena in the interior of the explosion chamber of an internal combustion engine of the controlled-ignition type and equipped with an ignition system for producing an electric discharge at a sparking plug of a cylinder relative to the upper dead center of a respective piston, said device comprising a temperature sensor in the interior of the explosion chamber of at least one of the engine cylinders, said sensor being positioned for contact with exhaust gases while also bonded to a wall of said explosion chamber so as to take a temperature between the average temperature of the gases and the average temperature of said wall, said sensor being also positioned in the explosion chamber in a zone generally farthest from the sparking plug and in which a knock phenomenon first occurs, and an electronic circuit for receiving a signal from said temperature sensor, said circuit comprising a threshold comparator which is capable of evaluating if the sensor temperature is below or above a preselected threshold value and of sending thus a command if said temperature exceeds said threshold value.