The world of sensors -

These sensors play an important part ,in reducing harmful nitrogen oxide, or NOx for short. But high operating temperatures and aggressive exhaust gases make high demands of NOx sensors. So this is why Motorservice is offering NOx sensors on the aftermarket from its sister company Pierburg, with the reliable quality you associate with original manufacturers.

With diesel engines, NOx sensors help inject the right amount of urea in the SCR catalytic converter (SCR = selective catalytic reduction). If two NOx sensors are fitted, the second NOx sensor monitors the function of the SCR catalytic converter.

NOx sensors are installed in utility vehicles from Euro VI as standard. In the case of petrol engines with direct injection, the NOx sensor monitors the load on the NOx catalytic converter.

The available item numbers cover more than 13 million vehicles worldwide, including utility vehicles from the “big seven” – DAF, IVECO, MAN, Mercedes-Benz, Renault, Scania and Volvo.

Motorservice has expanded its sensors portfolio to include active sensors for the tyre pressure monitoring system (TPMS).

With the active (direct) TPMS, a batterypowered sensor is fitted to each wheel rim and constantly measures air pressure and temperature in the tyre. The data is sent via wireless transmission to the trip computer. The advantage is that air pressure and temperature can be accurately monitored for individual wheels in real time.

The sensors are available as clamp-in sensors with cap nut and as snap-in sensors with rubber coating. These are active sensors (433 MHz) in the direct TPMS. 
The 30 articles cover approx. 222 million vehicles worldwide.

Wheel speed sensors are among the most important sensors in a vehicle. Their signal serves as an input variable for safety and comfort systems, such as the anti-lock braking system (ABS), electronic stability control (ESC), traction control system (TCS) or in the tyre pressure monitoring system. In this way, they make a direct contribution to driving safety, driving comfort and fuel consumption.
The 35 articles cover approx. 270 million vehicles worldwide.

Exhaust gas temperature sensors monitor the hot exhaust gas flow and protect components from overheating.

Typical applications include protecting components which are sensitive to temperature, such as turbochargers and all forms of catalytic converters, monitoring the free-burning process of the diesel particulate filter, controlling the optimal temperature range for catalytic converters and measuring the EGR exhaust gas temperature as part of on-board diagnostics (OBD). In the event of critical overheating, the control unit responds by taking appropriate action to reduce the temperature, e.g. through reduced performance (limp home function).

Motorservice offers more than 200 exhaust gas temperature sensors covering more than 125 million vehicles.

In addition to lambda sensors and exhaust gas temperature sensors, exhaust gas pressure sensors are the third product group of exhaust gas sensors available from Pierburg.

This group includes the following types of sensor:

• Differential pressure sensors are mainly used to determine how soiled the particulate filter is. They can also be used to detect whether e.g. an air filter or an EGR cooler is clogged or blocked.
• Exhaust back pressure sensors protect the engine and turbocharger against excess pressure.

Motorservice’s current range of exhaust gas pressure sensors and differential pressure sensors covers roughly 133 million vehicles worldwide.

Also referred to as fuel rail pressure sensors, these components supplement Pierburg’s existing range of fuel supply and sensor products.

In many cases, the rail can only be purchased as a complete unit along with all the attachments. However, Motorservice offers the pressure sensor separately as a spare part.

The item numbers that are currently available are compatible with a huge number of vehicles globally — over 140 million. The range is continually being expanded.

Lambda sensors measure the residual oxygen in the exhaust gas. This produces a lambda value, which the engine management system uses to regulate the mixture composition for the most optimal combustion possible.

Lambda sensors are the most important element in engine management systems in terms of ensuring perfect engine running with low emissions.

High operating temperatures and aggressive exhaust gas place high demands on lambda sensors. You should therefore choose products from the specialist for emission control.

Offering over 130 different lambda sensors, Motorservice covers the needs of more than 170 million vehicles worldwide.

Air mass sensors have been used in almost every vehicle for the last decade, and have become one of the most important components in engine management. They are therefore a key component in the air supply system and for emission control.

The air mass sensor records the air mass flowing into the engine. Its signal is used to calculate the injected fuel quantity, and in diesel engines also for regulating the exhaust gas recirculation.

Motorservice offers Pierburg air mass sensors with a flow pipe or as a separate plugin probe, suitable for over 1900 applications.

Air pressure sensors supply important input variable for the engine control
system. The commonly used abbreviation “MAP sensors” stands for “manifold absolute pressure”.

With around 60 OE references, these air pressure sensors cater for almost 1100 applications in Audi, VW, Škoda, Seat, Opel, Vauxhall, Fiat and PSA vehicles.

This corresponds to more than 130 million vehicles worldwide.