Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1983-04-06
1985-01-29
Nelli, Raymond A.
Internal-combustion engines
Charge forming device
Fuel injection system
123475, F02B 300, F02M 5100
Patent
active
044959249
ABSTRACT:
A fuel injection control system for a direct injection type internal combustion engine having a plurality of fuel injection valves installed in respective combustion chambers. The fuel injection control system comprises: (a) a means for calculating start timing with respect to each engine stroke and duration of fuel injection through the respective fuel injection valves according to the engine operating condition; (b) a means for producing a plurality of pulse signals each having a period corresponding to an angle of a crankshaft rotation including at least two engine strokes; and (c) a injection signal means provided for each engine cylinder for producing a fuel injection signal which rises at the time of the calculated start timing and has a duration corresponding to the calculated duration of fuel injection, the fuel injection signal being sent to the corresponding fuel injection valve at any time during the extended time interval from at least the beginning of the suction stroke to the end of the compression stroke of the engine cylinder.
REFERENCES:
patent: 3855973 (1974-12-01), Scofield
patent: 3941100 (1976-03-01), Bensch et al.
patent: 4213425 (1980-07-01), Read
Takase Sadao
Ueno Takashi
Nelli Raymond A.
Nissan Motor Company Limited
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