Bosch plant makes one-hundred millionth HFM
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Bosch Automotive OE Division product story
Edited by the Engineeringtalk editorial team
Nov 3, 2009
Bosch has announced that its plant in Eisenach, Germany produced its one-hundred millionth hot-film air-mass meter (HFM) last month (October 2009).
The sensor measures the engine's air intake, independently of air temperature and density.
The data provided by the HFM provides the basis for metering the amount of fuel injected into the engine.
Achieving the right air-fuel ratio ensures that the engine operates efficiently, which in turn reduces emissions.
Moreover, in modern diesel engines, hot-film air-mass meters also control exhaust-gas recirculation.
The HFM7 is available with either an analogue or digital interface to the control unit.
The HFM7 is characterised by its high-precision metering, compact design and sturdiness.
Moreover, thanks to its spontaneous response characteristics, for instance after starting the engine in a vehicle equipped with a start-stop system, the HFM7 can quickly deliver reliable data relating to the air flow in the induction tract.
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