Patent ID: 9243574
Filing Date: 2016-01-26
CPC Classification: F02D,F02P,G01D,G01P

Claim Text:
1. An engine control unit comprising: a pulse generator that detects a reluctor provided on a crank pulser rotor rotating synchronously with a crankshaft of a single cylinder engine to output crank pulses; an angular velocity calculator that calculates a first crank angular velocity using a reluctor in a predetermined section near compression top dead center of the engine in a compression stroke and an interval between two crank pulses output in the predetermined section near the compression top dead center of the engine, and detects near overlap top dead center the same reluctor used for calculating the first crank angular velocity to calculate a second crank angular velocity in an exhaust stroke using an interval between two crank pulses output from the pulse generator; and an engine load estimator that estimates an engine load from a difference between the first crank angular velocity and the second crank angular velocity, wherein the two crank pulses to be output in each of predetermined sections near the compression top dead center and the overlap top dead center are output at a time of detection of front and rear ends of a single reluctor provided on the crank pulser rotor.