Measuring and testing – Internal combustion engine or related engine system or... – Relative rotational position
Reexamination Certificate
2006-09-06
2010-06-15
Caputo, Lisa M (Department: 2855)
Measuring and testing
Internal combustion engine or related engine system or...
Relative rotational position
Reexamination Certificate
active
07735360
ABSTRACT:
Method for determining the reversal of the direction of engine rotation for internal combustion engines having a crankshaft fitted with a target wheel having teeth, one of which is a long tooth, with a unidirectional crankshaft position sensor delivering a signal used for counting teeth and with an engine management device including a processor and a model of the engine behavior in a stalling phase, including: recording the signal and measuring each time difference between two successive edges of the signal, calculating, on the basis of the model, the time variation of the engine position from the time differences between the edges of the signal, and estimating the stopped position of the engine, wherein the model is a second-order polynomial function of time, and the position of reversal of the direction of rotation is estimated from the calculation of the peak position of this second-order polynomial function.
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Dian Vincent
Gouzenne Valérie
Zouboff Pierre
Caputo Lisa M
Continental Automotive France
Kirkland, III Freddie
Young & Thompson
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