摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a high-pressure pump cam position detector in which a total period of time can be shortened which is required for electromagnetic valve lift control performed by a high-pressure pump by shortening a time period for detecting a cam top position at the start of an engine in a high-pressure pump for a pressure-accumulation type fuel injector. <P>SOLUTION: There is provided the high-pressure pump cam position detector for detecting a cam lobe position of the cam in the high-pressure pump driven by the cam formed on a cam shaft to pressurize fuel to high pressure, and accumulating the pressure in a pressure accumulator. In the high-pressure pump cam position detector, a plurality of the cam lobes are provided per one cylinder and equipped with position detecting pointers provided in the same numbers of pieces and at the same phases as those of the cam lobes in an outer circumferential surface of the cam shaft. Then, a plurality of positional signals of the position detecting pointers are detected by the cam position detector arranged corresponding to the position detecting pointer. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |