发明名称 |
Method for detecting operating parameters of a power tool comprising an internal combustion engine |
摘要 |
In a method for detecting an operating parameter of a power tool having an internal combustion engine with a cylinder, a piston delimiting a combustion chamber in the cylinder and driving a crankshaft supported rotatably in a crankcase, an intake supplying combustion air to the combustion chamber, an exhaust removing combustion gases from the combustion chamber, and a signal generator driven in rotation by the crankshaft emitting sequential alternating voltage signals, a period duration of the voltage signal is selected to correspond to the n-th portion of a crankshaft revolution with n greater than 2. The n-th portion of the crankshaft revolution provides a crankshaft angle interval. For each crankshaft angle interval at least one information is detected that represents a course plotted against the crankshaft angle. The course is scanned with regard to characteristic features that are correlated with an operating parameter of the power tool.
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申请公布号 |
US7974767(B2) |
申请公布日期 |
2011.07.05 |
申请号 |
US20070838278 |
申请日期 |
2007.08.14 |
申请人 |
ANDREAS STIHL AG & CO. KG |
发明人 |
MAIER GEORG;LAYHER WOLFGANG;ABOU-ALY MOHAMED;LEUFEN HEINRICH;SCHIEBER EBERHARD |
分类号 |
F02B77/08;F02P5/15;G01M15/00;G06F19/00 |
主分类号 |
F02B77/08 |
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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