Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1984-03-09
1985-02-12
Nelli, Raymond A.
Internal-combustion engines
Charge forming device
Fuel injection system
123416, 123417, F02P 504, F02D 3702
Patent
active
044984383
ABSTRACT:
An ignition timing control unit for a car engine by use of a microprocessor having a CPU, A ROM, and a RAM and a plurality of sensors, each output of which is connected to the input of the microprocessor so as to detect various parameters about running conditions of the engine in which various operations and calculations, such as determining whether or not the current engine speed detected is larger than an averaged out value which was detected previously and which has been stored in the RAM, updating the old weighting averaged value stored in the RAM with a new weighting averaged value, calculating a delay angle amount to be corrected for a spark advance angle and an effective spark advance angle value, and controlling the output timing of the ignition current to be applied to the igniter are carried out in the CPU of the microprocessor, in accordance with particular control programs according to the present invention which have been stored in the ROM.
With this construction, an over control of the ignition timing due to the fluctuation in the engine speed which was met in the prior art can be prevented by the averaging processing of the engine speed and a suitable ignition timing control becomes possible, thus reducing shocks and "hiccups" which otherwise often occur at the time of the abrupt acceleration or deceleration.
REFERENCES:
patent: 4367531 (1983-01-01), Furuhashi et al.
patent: 4380983 (1983-04-01), Kobushi et al.
patent: 4403584 (1983-09-01), Suzuki et al.
patent: 4414946 (1983-11-01), Dauoner et al.
patent: 4448162 (1983-05-01), Ninomiya et al.
patent: 4448171 (1984-05-01), Ninomiya et al.
Nelli Raymond A.
Toyota Jidosha & Kabushiki Kaisha
LandOfFree
Ignition timing control unit for a car engine and method thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ignition timing control unit for a car engine and method thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ignition timing control unit for a car engine and method thereof will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1384499