Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Reexamination Certificate
2006-06-27
2006-06-27
Solis, Erick (Department: 3747)
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
Reexamination Certificate
active
07066164
ABSTRACT:
The present invention has been realized in order to keep the cylinder exhaust temperature of a gas engine within a predetermined range, and thereby prevent the generation of misfire and knocking. In the present invention, in S1, when the number of rotations of the engine is greater than a predetermined number, in S2, the exhaust temperatures of the cylinders are sampled at predetermined intervals, in S3, an average of the exhaust temperatures is calculated, in S4, the load factor at that point is determined, in S5, the average exhaust temperature Taveis compared with the exhaust temperature T(n) of each cylinder, and it is determined whether the deviation ΔTnis greater or smaller than the set deviation Tlimitfor that load factor. When the deviation ΔTnis smaller, the exhaust temperature is within the set deviation and there is no need to adjust the fuel spray period, and therefore the sequence returns to S2. When the deviation ΔTnis greater, in S6, it is determined whether to increase or reduce the opening period of the electronic fuel spray valve. When increasing the opening period, the sequence shifts to S7, and when reducing the opening period, the sequence shifts to S8. Then, in S9, if the engine exceeds the predetermined number of rotations, the processes of S2to S6are repeated; in S9, if the engine is below the predetermined number of rotations, the control operation ceases.
REFERENCES:
patent: 6314952 (2001-11-01), Turin et al.
patent: 6382198 (2002-05-01), Smith et al.
patent: 6675787 (2004-01-01), Damitz et al.
patent: 62-186037 (1987-08-01), None
patent: 10-110640 (1998-04-01), None
patent: H10-110640 (1998-04-01), None
Goto Satoru
Nakayama Sadao
Nishi Yoshifumi
Ono Yoshiharu
Niigata Power Systems Co., Ltd.
Solis Erick
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