Diesel SystemsSensors for diesel systems

Electronic diesel control requires a host of information to ensure that all engine functions are always perfectly set. Reliable and high-precision sensors from Bosch provide this information from the powertrain, the exhaust-gas tract and the engine periphery.

Lambda sensor for diesel enginesThe wide-band lambda sensor for diesel engines enables reliable adherence to the strictest exhaust-gas and diagnostics regulations. It measures the residual oxygen content in the exhaust gas. This data helps to ideally adjust the air-fuel mixture via the air system. For monitoring and regulating the latest diesel exhaust-gas treatment systems we are developing both an NOx sensor and a particulate matter sensor. These will permit compliance with the stricter diagnosis guide-lines due to be introduced in the next few years.

Camshaft and crankshaft sensorThe point of time at which the fuel enters the com-bustion chamber is important for the injection pro-cess; so our non-contacting sensors register the exact positions of camshaft and crankshaft. In this way it is possible to defi ne the entire injection process, which consists of several injections, precisely for each cylinder.

Technical features camshaft and crankshaft sensorTemperature range ≤ 150°C (max. 250 h @ 160°C)Sensor diameter < 11.3 mm Technology Hall or inductive

Customer benefi ts Clean and economical engine operation thanks to

the provision of all required data High measuring precision Adherence to all emission standards

Customer benefi ts lambda sensor Reliable adherence to the strictest exhaust-gas

and diagnosis regulations Emission advantages already for applications

corresponding to Euro 4 Very fast light-off time

Customer benefi ts camshaft and crankshaft sensor Precise recognition of the camshaft or crank-

shaft position Compact and robust design High degree of durability, electromagnetic and

media compatibility Customer-specifi c connector

Technical features lambda sensor for diesel enginesRange of lambda control λ = 0.8 to airMax. exhaust-gas temperature (permanent) ≤ 930°CTechnology Nernst cell

Lambda sensor

Camshaft and crankshaft sensor

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Robert Bosch GmbHDiesel Systems

Postfach 30 02 2070442 StuttgartGermanyFax: +49 711 811-45090diesel@bosch.com

www.future-with-diesel.com

Printed in Germany292000P0VT-C/CCA-201203-En

© Robert Bosch GmbH 2012. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights

Peripheral pressure sensor In the case of pressure-controlled diesel injection systems, the pressure of the aspirated air in the intake manifold is measured. This permits the calculation of air charge in order to determine the amount of fuel needed. Bosch pressure sensors can also be employed to measure the media pressure in oil or fuel lines.

Diff erential-pressure sensorThe diff erential-pressure sensor from Bosch allows the realization of a fuel-saving, requirement-controlled re-generation concept for the particulate fi lter. The sensor measures the exhaust-gas pressure upstream and down- stream of the particulate fi lter. The loading state of the fi lter can be identifi ed from the diff erence in pressure.

Temperature sensorThe temperature sensor measures a variety of diff erent media (e.g. water, fuel, oil) over a broad range of temperatures. The robust sensor is specially designed for automotive applications.

Diesel Systems | Sensors for diesel systems

Customer benefi ts peripheral pressure sensor Compact, lightweight and robust Flexible mounting position High measuring precision, short response time High degree of durability, electromagnetic and

media compatibility Integrated evaluation circuit Customer-specifi c connector

Customer benefi ts diff erential-pressure sensor Compact, lightweight and robust Flexible mounting position High measuring precision, short response time High degree of durability, electromagnetic and

media compatibility Integrated evaluation circuit Customer-specifi c connector

Customer benefi ts temperature sensor Resistant to media (e.g. water, fuel, oil) Wide temperature range Specifi c connectors for diff erent temperature

ranges Connector versions for passenger cars/

commercial vehicles

Technical features diff erential-pressure sensorPressure range (typical) 0 - 100 kPa (diff erential) (relative) 0 - 125 kPa (relative) Response time < 1 msTemperature range -40 °C - 130 °CTechnology Piezoresistive sensor element

Technical features peripheral pressure sensorPressure range air intake 115 - 450 kPa oil or fuel line ≤ 10 barTechnology Piezoresistive sensor element

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Pressure sensor

Diff erential-pressure sensor

Temperature sensor

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Technical features temperature sensorTemperature range standard - 40°C - 130°C optional ≤ 150°CSupply voltage 5 VTechnology NTC element

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