Boots – shoes – and leggings
Patent
1987-02-20
1990-02-06
LaRoche, Eugene R.
Boots, shoes, and leggings
123425, 36443103, F02D 3702
Patent
active
048992828
ABSTRACT:
Disclosed is a method and apparatus for controlling an internal combustion engine having two inputs and one output affected by both inputs. One input is perturbed and the effect on the output is compared with a desired effect on the output. One or the other input is varied until the actual affect on the output is the same as the desired effect on output. In one embodiment, ignition timing is periodically varied and the effect upon engine speed is detected. The detected output variations (slope) are compared with predetermined output variations for the existing engine speed and load demand. Any error is used to correct fueling to the engine. Preferred embodiments include unique slop determination as well as a unique interpolation method of determining the engine input from a fixed schedule. In a further embodiment the error corrects the ignition timing directly and corrects fueling indirectly at a slower rate. Further embodiments control air/fuel ratio, engine roughness, exhaust gas recirculation, for individual cylinders or groups of cylinders or the engine as a whole, depending upon the change in engine output in response to the variation in engine input.
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Ham Seung
LaRoche Eugene R.
Lucas Industries Public Limited Company
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