Boots – shoes – and leggings
Patent
1990-03-12
1992-09-01
Lall, Parshotam S.
Boots, shoes, and leggings
36443101, 36443107, 36443105, 123416, 123419, 324392, F02P 500, F02P 515
Patent
active
051445603
ABSTRACT:
An engine control apparatus for shifting an ignition timing signal to an ignition coil (48) so that the engine produces optimum torque generates a pseudo random signal (26) which is preferably an M series signal and applies the pseudo random signal to a parameter of the engine having a noise frequency component such as the engine rotational speed y(t). The M series signal is a signal having a impulse type self correlation function. A mutual correlation function of the number of revolutions of the internal combustion engine and of the M series signal is computed (30-44) and an optimum ignition advance angle is supplied to an adder (46). The adder (46) combines the optimized signal ignition advance angle with a basic ignition timing signal (.theta..sub.advB) to provide an ignition timing signal (.theta.ig) to the ignition coil (48).
REFERENCES:
patent: 4236214 (1980-11-01), Sasayama
patent: 4262334 (1981-04-01), Monpetit
patent: 4375668 (1983-03-01), Leung et al.
patent: 4379333 (1983-04-01), Ninomiya et al.
patent: 4407251 (1983-10-01), Nakanishi
patent: 4800499 (1989-01-01), Ina et al.
Ishii Junichi
Kaneyasu Masayoshi
Kurihara Nobuo
Hitachi , Ltd.
Lall Parshotam S.
Pipala E. J.
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