Patent ID: 6840236
Filing Date: 2005-01-11
Classification: F02D,G01D

Abstract:
1. An engine controller comprising: cogs provided at non-uniform intervals on an outer periphery of a crankshaft or a member which rotates in synchronism with the crankshaft; crank pulse generation means which transmits a pulse signal in association with an approach to said cogs; crankshaft phase detection means for detecting the phase of a crankshaft from said crank pulse; engine control means for controlling the operating state of an engine on the basis of the phase of said crankshaft detected by said crankshaft phase detection means; and erroneous-detection-of-crank-pulse detection means which detects occurrence of erroneous detection of said crank pulse by means of comparing the rotational speed of said crankshaft determined from crank pulses assigned to specific cogs from among said cogs provided at non-uniform intervals with the rotational speed of said crankshaft determined from crank pulses assigned to cogs located in the vicinity of said specific cogs.