Internal-combustion engines – Spark ignition timing control – Electronic control
Reexamination Certificate
2005-12-20
2005-12-20
Argenbright, Tony M. (Department: 3747)
Internal-combustion engines
Spark ignition timing control
Electronic control
C123S406460, C123S406470, C123S406510
Reexamination Certificate
active
06976472
ABSTRACT:
An ignition circuit for a two-stroke engine has a spark plug connected via an ignition switch to a voltage source. The ignition switch is actuated via a control circuit to close the ignition switch in dependence upon the crankshaft angle and the rpm of the engine and to trigger an ignition spark per revolution of the crankshaft. For one and the same rpm, the control circuit makes available an ignition time point for the idle case and an ignition time point for the acceleration case. To achieve rapid acceleration from idle, the control circuit monitors idle rpm to switch to an ignition time point for the acceleration case for a pregiven rpm increase. If the control circuit determines an absence of the rpm increase or drop after ignition switchover to the acceleration case, then there is a switch back to the ignition time point for the idle case.
REFERENCES:
patent: 4612899 (1986-09-01), Honjoh et al.
patent: 4930477 (1990-06-01), Nanyoshi et al.
patent: 5447131 (1995-09-01), Nickel et al.
patent: 6223723 (2001-05-01), Ito
patent: 2003/0033076 (2003-02-01), Isoda et al.
patent: 60-256536 (1985-12-01), None
Andreas Stihl AG & Co. KG
Ottesen Walter
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