I figured out why mazda used a narrow range TPS in s4 models.
05-21-09, 11:48 PM
#1
I figured out why mazda used a narrow range TPS in s4 models.
It's because the design of the flapper type airflow meter makes a full range design unnecessary. Besides operating emissions, on a modern car the purpose of a TPS is to tell the ECU when the throttle plates open suddenly so that extra fuel can be injected to prevent a stumble.
the flapper design makes a full range TPS unnecessary, all OMP systems aside. It's a pretty impressive design for basically 70s technology.
http://bama.ua.edu/~darren/boschindex.html
original source is the Bosch L-Jetronic guide. Our fuel injection system (and especially s3 GSL-SE cars) are based on this system.
the flapper design makes a full range TPS unnecessary, all OMP systems aside. It's a pretty impressive design for basically 70s technology.
http://bama.ua.edu/~darren/boschindex.html
original source is the Bosch L-Jetronic guide. Our fuel injection system (and especially s3 GSL-SE cars) are based on this system.
05-22-09, 06:40 AM
#4
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What's the profile for an S5 TPS?
For the S4, I know the TPS output starts at about 1 volt at closed throttle and gets to about 5 volts at about 50% to 75% throttle.
For the S4, I know the TPS output starts at about 1 volt at closed throttle and gets to about 5 volts at about 50% to 75% throttle.
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