Knock control apparatus and method for internal combustion engines

Patent · Tue Sep 13 04:00:00 EDT 1988

OSTI ID:6793410

Sakakibara, K; Nishikawa, S; Haraguchi, H

This patent describes a knock control apparatus for an internal combustion engine comprising: a knock sensor for detecting the occurrence of knocking in an engine; average value generating means for determining an average value of an output signal of the knock sensor; average value correcting means for adding a predetermined correction quantity to the average value determined by the average value generating means; knock discrimination level generating means for increasing the corrected average value determined by the average value correcting means by K times by a K-value to generate a knock discrimination level; knock discrimination means for comparing the knock discrimination level generated by the knock discrimination level generating means and an output signal of the knock sensor to determine the presence or absence of knocking; and driver means responsive to a discrimination result of the knock discriminating means to control a knock control factor including at least one of an ignition timing and a supercharge pressure of the engine.

• Assignee: Nippondenso Co., Ltd., Kariya
• Patent Number(s): US 4770144
• OSTI ID: 6793410
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COMPUTERIZED CONTROL SYSTEMS
CONTROL
CONTROL SYSTEMS
CORRECTIONS
ENGINES
FUEL SYSTEMS
HEAT ENGINES
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
KNOCK CONTROL
MEASURING INSTRUMENTS
METERING
METERS
OPERATION