Knock suppression apparatus for internal combustion engine
A knock suppression apparatus is described for an internal combustion engine which consists of: means for detecting knock induced in the engine; means for detecting the load state of the engine; means for detecting the rotational speed of the engine; means for detecting the transient running state of the engine; memory means for storing corrective control values corresponding to the individual running modes of the engine each represented by a combination of the load and the rotational speed of the engine and, in response to the input information from the load detecting means and the speed detecting means, outputting the corrective control value corresponding to the information; means for correcting the control value which controls at least one of the operating characteristic values of the engine by using the value read out from the memory means and the output of the knock detecting means, the control value being so corrected at each ignition cycle; renewal control means responsive to the output of the knock detecting means and renewing, in the direction of knock suppression, the corrective control value stored in the memory means or, in the absence of any knock detection output, renewing the stored corrective control value in the reverse direction, the renewal control means being arranged to effect renewal of the corrective control value only at intervals corresponding to ignition cycles; and means for prohibiting the action of the renewal control means when a transient running state is detected by the means for detecting the transient running state of the engine.
- Assignee:
- Mitsubishi Denki Kabushiki Kaisha, Tokyo
- Patent Number(s):
- US 4586474
- OSTI ID:
- 5637723
- Resource Relation:
- Patent File Date: Filed date 01 Jan 1983
- Country of Publication:
- United States
- Language:
- English
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