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...Technical Information Preheating relays General Preheating relays provide switching and control of glow plugs. Activation and operation duration are mostly influenced by the position of the ignition switch or activity of the door lock and a temperature sensor. Funct...

...Technical Information Accelerator pedal position sensor General On modern vehicles the percentage of electronic components is increasing. Reasons for this, are among others, the legal regulations, e.g. emissions and fuel consumption reduction, the increase of active and passive safet...

...Technical Information Air Flow Sensor (MAF) General The air flow sensor records the incoming air flow. It is constructed of a duct style housing with a flow rectifier, sensor protection and a sensor module. The air flow sensor is fitted into the inlet pipe between the air filte...

...Technical Information Camshaft sensor General Camshaft sensors have the function, in coordination with the crankshaft sensor, to define N o 1 cylinder compression/firing stroke. This information is needed for a) commencement of injection on sequential injections system, b) th...

...Technical Information Coolant level sensor General Coolant level sensors are fitted into the expansion tank. It checks the minimum level in the tank to prevent an overheated engine through water shortage. Function The coolant level sensor is a magnet which is...

...Technical Information Coolant temperature sensor General The coolant temperature sensor provides information for air/fuel mixture preparation by recording the operating temperature of the engine. The ECU adapts the injection time and the ignition angle to the operating conditi...

...Technical Information Crankshaft Sensor General Crankshaft sensors record the engine speed and crankshaft position. The fitting position is near the flywheel ring gear. More they are found on the engine block with the sensor ring bolted onto the crankshaft There are two differen...

...The Diesel Particulate Filter System DPF General information In order to maintain the prescribed emission limit values, a diesel particulate filter that is also known as DPF is used in vehicles with diesel engines. The diesel particulate filter comprises a ceramic structure that ha...

...Technical Information Idle speed control valve General The idle speed control valve is bypass valve. Example, as shown, is for Opel. It is made of a cast housing with a magnetic valve servo unit. A jet stem is fitted to the servo unit. Through the movement of the servo unit th...

...Technical Information Ignition module (Trigger box) General The ignition module contains the closed -loop primary current control circuit and the dwell-angle control. They are built with hybrid technology. This has the benefit that they can be built together with the igniti...



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