发明名称 |
Fuel injection timer and current regulator |
摘要 |
A fuel injector control system and method provides precise fuel injection timing while eliminating the need for a voltage regulator by estimating or predicting ramp times between voltage application and actual fuel injection. In one embodiment, an estimated ramp time injection is calculated from a measured voltage and is used to delay or advance application of the voltage on the coil so that the load current reaches a desired current level at a desired injection start time. In another embodiment, an actual ramp time for a given injection is measured and used to predict future ramp times. A current regulator prevents excessive emissions from being generated when controlling the load current.
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申请公布号 |
US2005213277(A1) |
申请公布日期 |
2005.09.29 |
申请号 |
US20050132021 |
申请日期 |
2005.05.18 |
申请人 |
SIEMENS VDO AUTOMOTIVE CORPORATION |
发明人 |
VIERLING LOU;TRACY SHAWN L.;HOLLOWELL WILLIAM E. |
分类号 |
F02D41/20;(IPC1-7):H01H47/28;F02M51/00 |
主分类号 |
F02D41/20 |
代理机构 |
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