Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Reexamination Certificate
2007-09-18
2007-09-18
Kwon, John T. (Department: 3747)
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
C123S434000, C123S568210
Reexamination Certificate
active
11433351
ABSTRACT:
In an engine having a premixed combustion mode, an EGR flow rate estimating precision is deteriorated at a transient time, and a torque fluctuation and an exhaust gas deterioration are caused. In an engine control apparatus having a premixed combustion mode and a diffusion combustion mode, a sensor detecting an EGR flow rate is arranged in an EGR flow path of the engine, and a cylinder state of the engine is estimated by using an output value of the sensor detecting the EGR flow rate at a time when the engine is in the premixed combustion mode. Since it is possible to accurately detect the EGR flow rate at the transient time and feed back the EGR flow rate at a high response, it is possible to prevent a torque fluctuation and an exhaust gas deterioration.
REFERENCES:
patent: 6273056 (2001-08-01), Shirakawa et al.
patent: 6276334 (2001-08-01), Flynn et al.
patent: 6286482 (2001-09-01), Flynn et al.
patent: 2003/0140629 (2003-07-01), Shirakawa
patent: 0 924 419 (1999-06-01), None
patent: 2003-286880 (2003-10-01), None
Fukatsu Katsuaki
Ichihara Takanobu
Igarashi Shinya
Iwaki Hidefumi
Kadohiro Takashi
Crowell & Moring LLP
Hitachi , Ltd.
Kwon John T.
LandOfFree
Control apparatus of engine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control apparatus of engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control apparatus of engine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3764150