Bosch MAF and Regina ATS
no mo volvo
Joined: Oct 2010
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From: 37 North on the left coast
um, they are *completely* different things. one measures air mass, eg, how much air is being sucked into the engine, while the other measures the inlet air temperature.
Regina also uses a manifold air PRESSURE sensor, which measures the manifold vacuum. Regina calculates the air mass from the air temp and manifold pressure, to figure out how much fuel to squirt in, while Bosch measures the air flow directly.
The Bosch MAF uses a heated nichrome wire across the intake air, and measures the current flow through this wire. more air cools the wire faster, this changes the wires resistance, which changes the current flow. unlike earlier mechanical air flow meters that used a moving flap, the hot wire automatically compensates for the thinner air at higher elevations.
Regina also uses a manifold air PRESSURE sensor, which measures the manifold vacuum. Regina calculates the air mass from the air temp and manifold pressure, to figure out how much fuel to squirt in, while Bosch measures the air flow directly.
The Bosch MAF uses a heated nichrome wire across the intake air, and measures the current flow through this wire. more air cools the wire faster, this changes the wires resistance, which changes the current flow. unlike earlier mechanical air flow meters that used a moving flap, the hot wire automatically compensates for the thinner air at higher elevations.
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From: Columbus
um, they are *completely* different things. one measures air mass, eg, how much air is being sucked into the engine, while the other measures the inlet air temperature.
Regina also uses a manifold air PRESSURE sensor, which measures the manifold vacuum. Regina calculates the air mass from the air temp and manifold pressure, to figure out how much fuel to squirt in, while Bosch measures the air flow directly.
The Bosch MAF uses a heated nichrome wire across the intake air, and measures the current flow through this wire. more air cools the wire faster, this changes the wires resistance, which changes the current flow. unlike earlier mechanical air flow meters that used a moving flap, the hot wire automatically compensates for the thinner air at higher elevations.
Regina also uses a manifold air PRESSURE sensor, which measures the manifold vacuum. Regina calculates the air mass from the air temp and manifold pressure, to figure out how much fuel to squirt in, while Bosch measures the air flow directly.
The Bosch MAF uses a heated nichrome wire across the intake air, and measures the current flow through this wire. more air cools the wire faster, this changes the wires resistance, which changes the current flow. unlike earlier mechanical air flow meters that used a moving flap, the hot wire automatically compensates for the thinner air at higher elevations.
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MNWILD
Volvo 240, 740 & 940
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Jun 16, 2011 11:26 AM
