In order to ensure that legal specifications for emissions are complied with and that the vehicle is not consuming fuel unnecessarily, air and fuel must be fed through the engine in a precisely defined ratio. This takes place by means of an air-mass meter or air flow sensor which detects the actual air-mass flow and transmits the measured values to the regulating and control systems of the engine.
When, as a result of the energy crisis, the reduction of fuel consumption became an important development goal in 1972-73, Bosch introduced air-volume measurement with the mechanical K-Jetronic gasoline injection and the electronically controlled L-Jetronic gasoline injection. As the inventor, Bosch is still a pioneer in the field of technical development for air-volume and air-mass metering.
Bosch hot-film air-mass meters are equipped with the latest technology (e.g. with integrated temperature, humidity, or pressure sensors) and microelectronics. In newer versions they are extremely reliable as they are highly resistant to contamination. Bosch hot-film air-mass meters work with utmost precision and thus make a significant contribution to minimizing the vehicle’s fuel consumption and emissions.
If the air-mass meter on a vehicle needs replacing, it pays off to rely on first-class Bosch quality. This is because Bosch air-mass meters are perfectly adapted to the vehicle and guarantee optimum performance for minimum consumption.
The following high-quality exchange parts for older vehicles with fuel-injection engines are available in the Bosch exchange range, Bosch eXchange: