Sensors for Engine Management

A growing focus on reducing CO2 emissions means that mass airflow sensors are becoming increasingly important in ensuring the optimum air fuel ratio.
Mass airflow sensors are positioned directly after the air filter in the intake manifold and supply information on temperature, humidity and intake air volume. Despite their highly compact construction, they feature precision technology to capture information, which – together with other engine data – enables optimum engine management.

This data includes:

• Intake air temperature
• Intake air humidity
• Intake air volume

In gasoline engines, mass airflow measurement is used in conjunction with other sensor readings to regulate the supply of fuel to the engine.

In diesel engines, mass airflow sensors are used to regulate the exhaust gas recirculation rate and calculate the maximum injection quantity.

Our mass airflow sensors are exceptionally reliable and highly capable of withstanding environmental factors. Their dynamic measurement ability makes an important contribution to reducing vehicle emissions.

The wheel speed signal is crucial for electronic systems like ABS or ASC.

The camshaft sensor is located in the cylinder head and reads the camshaft sprocket to determine the position of the camshaft.

This information is required for functions such as initiating injection on sequential injection engines, the trigger signal for the magnet valve on pump valve injection systems and for cylinder-specific knock control.

The crankshaft sensor supplies information on the crankshaft’s current position, which the engine management system can then use to calculate rpm. These values make it possible to determine the most economical fuel injection and ignition timing for a vehicle.

Modern engines which allow high compression ratios have a distinct disadvantage: their design leads to increased knocking, which can damage the engine.

Knock sensors reliably measure the vibration of the engine block that is characteristic of engine knocking. This allows the firing angle and other parameters to be set such that the engine continues to function correctly close to the knock threshold. This not only protects the engine, but also reduces fuel consumption.

To ensure maximum precision, our knock sensors deploy groundbreaking bandwidth technology.

MAP and T-MAP sensors measure the air pressure in the intake manifold behind the throttle valve to determine air intake. This information is extremely important for calculating the amount of fuel to be injected to ensure the correct air fuel mix. For this reason, the dynamic measurement capability of these engine management components is crucial in reducing vehicle emissions.

MAP pressure sensor for turbocharged engines for measuring air pressure behind the turbocharger (measurement range 500–3000 hPa)

T-MAP pressure sensor with integrated temperature sensor

 Lambda sensors determine the amount of residual oxygen in the exhaust and transmit this value to the engine control, which in turn precisely sets the composition of the mixture using the transmitted values.

The only way to ensure almost complete conversion of the fuel/air mixture into environmentally compatible exhaust gases is through perfect adjustment of the fuel/air mixture. Our oxygen sensors ensure optimal engine power while complying with the stipulated emissions values.

It is supplied the information on temperature for protection of components and control efficiency.

• Temperature monitor for turbochargers, catalytic converters, diesel particle filters and nitrogen oxide reduction systems
• Protection of temperature overload
• Reduction of harmful emissions and fuel consumption