Controller and control method for engine ignition timing

Details Controller and control method for engine ignition timing Controller and control method for engine ignition timing

1997-07-11

1999-03-30

Argenbright, Tony M.

Internal-combustion engines

Means to whirl fluid before, upon, or after entry into...

12340626, 12340647, 12340648, F02P 515, F02D 4304

Patent

active

058875689

ABSTRACT:
A predetermined firing delay time B.sub.1 is added to a value obtained by dividing a total gas weight Gcyl in a cylinder by an unburnt gas density basic value DENS and a laminar flow flame velocity basic value FLML. The value obtained by this calculation is unit converted and then set as a basic ignition timing for which a minimum ignition advance value or MBT is obtained. In this way, ignition timing control is optimized for various engine running conditions without preparing a plurality of maps.

REFERENCES:
patent: 4557236 (1985-12-01), Showalter
patent: 4621603 (1986-11-01), Matekunas
patent: 4624229 (1986-11-01), Matekunas
patent: 4841925 (1989-06-01), Ward
patent: 4915079 (1990-04-01), Holmes
patent: 5050556 (1991-09-01), Williams et al.

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