Isuzu Motors Ltd. and Delphi Automotive Systems say their “ion sense” ignition subsystems — in use for the past year on Isuzu Troopers and Rodeos — have enabled cuts in emissions and fuel usage while adding value by integrating functions. The ion-sense system consists of an individual ignition coil for each cylinder and a central control module, none of which have any moving parts. After the spark fires the cylinder's air/fuel mixture, the system applies a DC current to the sparkplug gap, ...

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