Released on = September 21, 2006, 4:24 pm

Press Release Author = John Cecil

Industry = Automotive

Press Release Summary = Here's an analogy for how the LM-1's measurement principle
works, and how it differs from both narrow-band technology, and other wideband
technology:

Press Release Body = Here's an analogy for how the LM-1's measurement principle
works, and how it differs from both narrow-band technology, and other wideband
technology:

Narrow-band Sensors: Like a balance scale with only one reference weight

Picture a balance scale like the ones used by merchants and traders for the last
10,000 years. These scales work by adding various known weights to one side until
both sides balance. But if you had only one reference weight, all you could know is
if your item weights more or less than the reference. This is what a narrow-band,
switch-type sensors do (even 3-wire or 4-wire versions). They tell you if you are
higher or lower than 14.7 AFR, but nothing else. This works for regulating engines
to 14.7AFR at idle or cruise, but is useless for maximizing efficiency or
performance.

Wideband sensors: Like a spring scale

A Wideband sensor is more like a spring-based scale. These scales determine a weight
by measuring the deflection of a spring. A set screw is used to set the spring
tension to a defined deflection for a known exact weight. The spring analog in this
example is the pump current, the set-screw is the calibration resistor provided by
the sensor manufacturer and the known exact weight is pump current required in free
air. Another issue with this scale is that when you put a new weight on the scale,
you need to wait until the scale stops oscillating.

But what if the spring looses tension with age or manufacturing tolerances make the
spring deflection non-linear?

The very expensive high-end meters supply a \'calibration table\' that compensates for
the \'spring\' non-linearity on a sensor-by-sensor basis. Producing this table is a
laborious and expensive process and is naturally only correct for a new
spring/sensor.

For more details, Please visit : http://www.innovatemotorsports.com/press.php




Web Site = http://www.innovatemotorsports.com/

Contact Details = Innovate! Technology, Inc.
5 Jenner
Suite 100
Irvine, CA 92618
TEL: 949-502-8400
FAX: 949-502-8439
Email : innovatemotor@gmail.com