专利名称：POWER CONTROL CIRCUIT FOR
ELECTROMAGNETIC ACTUATOR SUCH ASAN INJECTOR OR AN ELECTROVALVE
发明人：BOUCLY, BERNARD申请号：EP98936459.1申请日：19980707公开号：EP0995023A1公开日：20000426
摘要：The invention concerns a power control circuit, for powering a coil (7-10) of atleast an actuator such as a fuel injector, comprising a positive booster stage connected toa low voltage power source (3), and comprising a capacitor (6) and a self-induction coil (1)designed to accumulate energy, and first switches (4) cyclically closed and opened by acontrol unit (16) for charging the coil (1) from the source (3) then charging the capacitor(6) from the coil (1); and finally charging several times and successively the coil (1) againbefore closing the second switches (11-14) to ensure the powering of at least oneactuating coil (7-10) by simultaneous discharge of the capacitor (6) and the self-inductioncoil (1). The invention is applicable for supplying power to electromagnetic actuatorssuch as electrovalves and injectors for internal combustion engine with direct injection.
申请人：MAGNETI MARELLI FRANCE
地址：19, rue Lavoisier 92002 Nanterre Cédex FR
国籍：FR
代理机构：Bérogin, Francis
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