Electricity: measuring and testing – Internal-combustion engine ignition system or device – In situ testing of spark plug
Patent
1983-04-01
1985-12-10
Krawczewicz, Stanley T.
Electricity: measuring and testing
Internal-combustion engine ignition system or device
In situ testing of spark plug
36443103, G01R 1508, G01R 1504, F02P 1700
Patent
active
045582807
ABSTRACT:
The secondary ignition circuit of a spark ignited internal combustion engine is analyzed to identify the location of faulty portions of the circuit, the circuit having an induction coil for generating sparking voltage pulses repetitively, and a distributor for cyclically distributing the voltage pulses to respective spark plugs in a predetermined order. The peak amplitude of respective voltage pulses of one polarity developed at a single point in the secondary ignition circuit for respective spark plugs in each engine cycle is measured to produce measurement signals systematically related thereto. A comparison signal is derived that is systematically related to the average peak amplitude of voltage pulses of the one polarity developed for all spark plugs. Successive measurement signals are compared with the comparison signal, and a fault is indicated when a measurement signal differs from the comparison signal by more than a predetermined differential. A fault is also indicated when the measurement signal is less than a predetermined amplitude. A fault is also indicated when peak voltage pulses of the opposite polarity exceed the average peak by more than a predetermined differential. The spark plugs at fault are individually identified, as is the nature of the fault.
REFERENCES:
patent: 3740642 (1973-06-01), Taylor
patent: 3743922 (1973-07-01), Festos
patent: 3793584 (1974-02-01), Liebermann et al.
patent: 3942102 (1976-03-01), Kuhn
patent: 3961240 (1976-06-01), Pohl
patent: 3984768 (1976-10-01), Staples
patent: 4204152 (1980-05-01), Imrie
patent: 4305038 (1981-12-01), Luzynski
patent: 4449100 (1984-05-01), Johnson
Koehl Stephen E.
Tiller Charles R.
Cooper Industries Inc.
Krawczewicz Stanley T.
Solis Jose M.
LandOfFree
Ignition secondary analyzer 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 secondary analyzer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ignition secondary analyzer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-61062