发明名称 |
Method for determining the closing time of an electromagnetic fuel injector |
摘要 |
A method for determining the closing time of an electromagnetic fuel injector including the steps of applying at a starting time of the injection a positive voltage to the coil of the electromagnetic actuator in order to circulate through the coil an electric current which causes the opening of an injection valve; applying at an ending time of the injection a negative voltage to the coil in order to annul the electric current flowing through the coil; detecting the trend over time of the voltage across the coil after the annulment of the electric current flowing through the coil; identifying a perturbation of the voltage across the coil; and recognizing the closing time of the injector that coincides with the time of the perturbation of the voltage.
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申请公布号 |
US8571821(B2) |
申请公布日期 |
2013.10.29 |
申请号 |
US201113081784 |
申请日期 |
2011.04.07 |
申请人 |
SERRA GABRIELE;PAROTTO MARCO;ARMENI SAVERIO;SANTAMATO LUIGI;TRICARICO ROMITO;MAGNETI MARELLI S.P.A. |
发明人 |
SERRA GABRIELE;PAROTTO MARCO;ARMENI SAVERIO;SANTAMATO LUIGI;TRICARICO ROMITO |
分类号 |
G01R19/00 |
主分类号 |
G01R19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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