Patent ID: 6976472

Claim:
An ignition circuit for an internal combustion engine including an engine in a portable handheld work apparatus, the engine having operating parameters and including a crankshaft which rotates through a crankshaft angle, the ignition circuit comprising: a spark plug; a voltage source; an ignition switch connecting said spark plug to said voltage source; an electronic control circuit for actuating said ignition switch to close the same in dependence upon said crankshaft angle and at least one of said operating parameters and to trigger an ignition spark per revolution of said crankshaft; said control circuit functioning to make a first ignition time point available for an idle state and a second time point for an acceleration state at one and the same rpm of said engine; said control circuit functioning to monitor the idle rpm and switching over to said second time point for said acceleration state when there is an rpm increase during idle to thereby effect a rapid acceleration out of idle and, after the ignition switchover to said acceleration state, continuing to monitor the rpm and, when there is an absence of a further increase in rpm or when there is a drop in said rpm, said control circuit switching back to said first ignition time point for the idle state.