Spark several variable multiplex spark ignition devices for internal combustion engine

摘要

(57) Abstract The coil it was disposed to every ignition device and the especially plug on vehicle energy is supplied according to command (CPP) being the device, the restrike being the program possible, single ignition energy output makes smallest, at the time when it shows the start of burnup because of this at the time of idle engine speed and light load and is limited, in addition 0 - 2% mass combustion rate of the ignition possible air/fuel mixture of the combustion chamber (MFB), desirably, in order 0.5% mass combustion rate (MFB) to occur inside the range, each coil (4) is done the restrike, namely it discharges the maximum frequency which is beforehand decided in the coil design. In addition the coil was disposed to every this plug (CPP) the device, program possibility including the restrike, because of this device abandoning restrike modulo the operational status, especially special engine speed state and special partial load state, in a state where it exceeds the range which is decided beforehand, is reset to single ignition modulo. The field where it was put in this state with (i) one side is idle engine speed and minimum load, and is engine speed and in a partial load state where (ii) beforehand it is decided. As for this ignition modulo, the coil (4) is done the ignition of 1 times or more, but the fact that it does not exceed the maximum frequency of the restrike which is decided beforehand in the coil design is included, restrike frequency of specification in order to be decided ideally in order to achieve complete burnup with the operational status which is detected, is decided by the schedule which is decided beforehand.