G - Physics – 01 – M
Patent
G - Physics
01
M
73/168, 354/24
G01M 15/00 (2006.01) F02P 17/06 (2006.01) G01M 15/04 (2006.01) G01P 3/48 (2006.01) G01P 3/489 (2006.01)
Patent
CA 1072211
ABSTRACT OF THE DISCLOSURE The rpm, dwell and timing of an internal combustion engine are measured by starting and stopping a digital counter on the leading edge of pulse waveforms generated either within the engine or by a timing light. To measure rpm and dwell only the low coil signal is used. For rpm measurement, the counter is started when the ignition points open, and stopped upon the next opening of the points. To measure dwell the counter is started by the opening of the points and stopped when the points close, the resultant count being the inverse of dwell, and this count is subtracted from the rpm count to obtain dwell. Timing is measured by starting the counter upon the firing of the number one cylinder, and providing an additional signal delayed in time as a function of the distributor advance to stop the counter. The count in the counter is converted to rpm, dwell or timing by either analog or digital techniques. A high energy ignition adapter cir- cuit prevents triggering of the counter by a false indica- tion of the opening of the points due to a waveform peculiar to low coil signals produced in vehicles using high energy ignition systems. A timing light delay cir- cuit having a variable delay is incorporated with the timing light to produce the delayed signal proportional to distributor advance, the delay being adjustable within two selectable ranges. By measuring and displaying the computed dwell for each cylinder in sequence, distributor mechanical wear associated with shaft bearings and drive gears may be detected. Power contribution and dynamic relative compression for each cylinder may be measured by using the counter to measure the time that the points are open, and the time that the points are closed, for each cylinder in sequence, and displaying the measurements.
246714
LandOfFree
Power contribution measurement system for internal... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power contribution measurement system for internal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power contribution measurement system for internal... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-688497