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Old 01-11-2004, 02:22 PM
Duke2.6 Duke2.6 is offline
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Join Date: Mar 2003
Location: Southern California
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Re: Steve is correct, KE systems senses ....

Quote:
Originally posted by ChinaClipper
and deflects the sensor plate, in relation to the VOLUME of air that passes it, not the MASS.
No, as I said before the K air meter reacts to incoming air momentum (mass times velocity), so at a given CFM lower density air will deflect the plate less. This is explained in Bosch literature on the K and KE systems.

The K air flow meter does measure mass flow, but it is not as accurate or responsive as a modern hot wire MAF, which is why the electronics were added to fine tune the performance of the system for emission requirements.

The KE system is one of the most complex fuel systems ever devised, and that's why it was finally abandoned in favor of full electronic systems, which were both cheaper and more accurate.

Duke
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