Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant
Patent
1997-08-05
1998-11-03
Dombroske, George M.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
With indicator or control of power plant
73116, 731173, 123419, 123436, G01M 1500
Patent
active
058324046
ABSTRACT:
A device for accurately detecting misfiring repetitively occurring in the opposing cylinders every 360.degree. CA. An angular velocity detecting means detects the angular velocity of rotation of the crankshaft for each cylinder at the time of combustion. A first rotational change calculation means calculates a first amount of change in the rotation by finding a deviation of angular velocity between the two cylinders of consecutive combustion strokes. A second rotational change calculation means calculates a second amount of change in the rotation by finding a deviation of angular velocity between the two cylinders 360.degree. CA before the moment at which the first rotational change calculation means has detected the angular velocity to calculate the first amount of change in the rotation. An adder means adds up the first amount of change in the rotation calculated by the first rotational change calculation means and the second amount of change in the rotation calculated by the second rotational change calculation means. A misfiring detecting means detects misfiring that occurs every 360.degree. CA by comparing the amount of change in the rotation added up by said adder means with a predetermined discrimination value.
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Dombroske George M.
Tovota Jidosha Kabushiki Kaisha
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