Apparatus for controlling ignition timing in an internal combust

Details Apparatus for controlling ignition timing in an internal combust Apparatus for controlling ignition timing in an internal combust

1985-05-06

1988-02-16

Lall, Parshotam S.

Boots, shoes, and leggings

36443108, 123417, F02M 5100

Patent

active

047259558

ABSTRACT:
Disclosed is an engine having an air-fuel ratio control apparatus for obtaining various air-fuel ratios, the range of which is between the stoichiometric air-fuel ratio or lower than that ratio and the high air-fuel ratio providing a very lean air-fuel mixture. A plurality of ignition timing maps is provided, these maps having a respective order of priority determined by the air-fuel ratio. During operation of the engine, parameters substantially related to the air-fuel ratio ranges are detected, and a map having the highest order of priority is selected from the maps which meet the engine parameters. The ignition timing is calculated from the selected map.

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