초록 ▼

A control device for a multicylinder engine comprising a knocking detector for detecting the occurrence of knocking, a crank angle sensor for generating a signal indicative of the crank angle, an engine operating condition control device for governing the engine operating condition, and a control ci

A control device for a multicylinder engine comprising a knocking detector for detecting the occurrence of knocking, a crank angle sensor for generating a signal indicative of the crank angle, an engine operating condition control device for governing the engine operating condition, and a control circuit for identifying one of the engine cylinders in which knocking has actually occurred, in dependence on both outputs from the detector and the crank angle sensor. The control circuit operates to cause the engine operating condition control device to control the at least one of the engine cylinders when the output from the detector is lower than a predetermined value, but to control all of the engine cylinders when it is higher than the predetermined value.

대표청구항 ▼

A control device in combination with a multicylinder internal combustion engine having a plurality of engine cylinders adapted to be fired in a predetermined order, fuel combustion means in each cylinder and actuating means for actuating said fuel combustion means in said predetermined order, said c

A control device in combination with a multicylinder internal combustion engine having a plurality of engine cylinders adapted to be fired in a predetermined order, fuel combustion means in each cylinder and actuating means for actuating said fuel combustion means in said predetermined order, said control device comprising: vibration sensing means operably connected to said engine for sensing engine vibration and generating a first signal in accordance therewith; knock detecting circuit means connected to said vibration sensing means for receiving said first signal, and separating from said first signal any portion thereof which is generated by engine knock and generating a second signal in accordance therewith; crank angle sensing means operably connected to said engine for sensing the crank angle of the engine and generating a third signal in accordance therewith; and a control circuit operably connected to said actuating means and to said knock detecting circuit means and said crank angle sensing means and including first circuit means for comparing said second and third signals to identify an engine cylinder in which knocking has occurred, and for providing a fourth signal to said actuating means in response to said second signal, when said second signal is below a predetermined value, to retard the actuation of the respective fuel combustion means, and second circuit means for providing a signal to said actuating means, when said second signal is above said predetermined value, to retard the actuation of all of said fuel combustion means.