Observations made by a newby
Thread Starter
|
Registered User
Joined: Feb 2012
Posts: 8
Likes: 0
From: New Mexico
WOW!
Thanks for the information (read education). It seems I have a boat load of research ahead of me, specifically regarding the MAP sensor and how it operates.
I'm not sure how a MAP sensor functions. Is it a piezo sensor?
Thanks for the information (read education). It seems I have a boat load of research ahead of me, specifically regarding the MAP sensor and how it operates.
I'm not sure how a MAP sensor functions. Is it a piezo sensor?
Absolute pressure actually means absolute zero pressure which is 100% vacuum. It measures change in vacuum. Vacuum readings decrease the more the butterfly is open. Vacuum at idle should be at its peak.
Thread Starter
|
Registered User
Joined: Feb 2012
Posts: 8
Likes: 0
From: New Mexico
Here we go:
It's more simple than I originally thought, a simple differential measurement.
The MAP sensor consists of two chambers separated by a flexible diaphragm. One chamber is the "reference air" (which may be sealed or vented to the outside air), and the other is the vacuum chamber which is connected to the intake manifold on the engine by a rubber hose or direct connection. The MAP sensor may be mounted on the firewall, inner fender or intake manifold.
A pressure sensitive electronic circuit inside the MAP sensor monitors the movement of the diaphragm and generates a voltage signal that changes in proportion to pressure. This produces an analog voltage signal that typically ranges from 1 to 5 volts.
A pressure sensitive electronic circuit inside the MAP sensor monitors the movement of the diaphragm and generates a voltage signal that changes in proportion to pressure. This produces an analog voltage signal that typically ranges from 1 to 5 volts.
