Internal-combustion engines – Charge forming device – Including cylinder pressure or temperature responsive means
Patent
1987-09-09
1988-05-17
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Including cylinder pressure or temperature responsive means
123425, 73 35, F02P 5155, G01L 2322
Patent
active
RE0326674
ABSTRACT:
A system for use with an internal combustion engine which reduces, or eliminates, engine knock and attendant engine damage. An audio transducer is placed on an engine cylinder to convert audio signals occurring within the combustion chamber into an electrical signal. This signal is sampled and filtered and the amplitudes of two time-sequenced segments are compared. One of those segments is timed for an interval during which detonation, if any, is likely to occur, and the other of these segments is timed for an interval during which no detonation is likely to occur. When the amplitude of the sample from the segment of likely detonation exceeds the amplitude of the sample from the segment of unlikely detonation, by a predetermined amount, extra fuel is momentarily added to the combustion chamber to slow down the rate of combustion and cool the walls of the combustion chamber.
REFERENCES:
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patent: 4440129 (1984-04-01), Iwata
patent: 4449501 (1984-05-01), Greeves
patent: 4535739 (1985-08-01), Kuoo et al.
patent: 4552111 (1985-11-01), Tahara
patent: 4565087 (1986-01-01), Damson et al.
patent: 4593553 (1986-06-01), Bonitz et al.
Brunswick Corporation
Wolfe Willis R.
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