Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Aircraft engine detonation indication system










Image Number 2 for United States Patent #5581016.

A detonation detection system for internal combustion piston engines which senses pressure within each cylinder through a piezoelectric force transducers installed under each spark plug producing pressure charged signals which signal is converted from inline charge to voltage. The signal is then passed through a gating comparator which segregates out the low pressure signals associated with intake and exhaust strokes. The signal then passes through a high-pass filter which removes normal combustion pressures. The filtered signal is then processed through an RMS (root mean square) to a DC converter which continuously computes the instantaneous square of the input signal, averages it, and takes the square root of the result to provide a DC voltage proportional to the RMS of the input. The DC signal is then processed through a peak and hold circuit which holds the peak signal for an adjustable reset-time period. A digital display is provided for each cylinder which receives and displays in numerical value the peak RMS signal.








 
 
  Recently Added Patents
Method and system for implementing power detection
Catalyst compositions for hydroformylation reaction and hydroformylation process using the same
Flexible pouch
Writing implement
Ottoman
Spectral measurement device
N-phenyl-(homo)piperazinyl-benzenesulfonyl or benzenesulfonamide compounds suitable for treating disorders that respond to the modulation of the serotonin 5-HT.sub.6 receptor
  Randomly Featured Patents
Metal heating furnace
On line ultrasonic velocity gauge
Highly time resolved impedance spectroscopy
Carbon coating for a starting member used in producing optical waveguide
Image display apparatus
Obtaining and displaying status updates for presentation during playback of a media content stream based on proximity to the point of capture
Light amount adjusting apparatus and image pickup apparatus
Compact fluorescent reflector lamp
Wall mounted distribution frame for telephone subscriber locations
Polymer filaments used as a thermoluminescent dosimeter