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São Paulo, July 2023 - A Niterra, Japanese multinational owner of the NGK and NTK brands and specialist in components for ignition systems, announces the expansion of its sensor portfolio with the new line of rotation models marketed by NGK.
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The launch of the brand encompasses two categories: Inductive sensors, which have no external power supply and their working principle is based on electromagnetic induction, Capable of reproducing a sine wave; e Hall Sensors, whose internal power generates a broken-type wave, which can be 5 or 12 volts.
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Both pieces of equipment are important for injection and ignition systems because they make it easier to start the vehicle, indicating the position of the PMS (Top Dead Center) of the engine and reporting the angular velocity of the crankshaft. Can be located at the tip of the crankshaft, next to the front pulley; on the back, next to the seal or on the steering wheel seal itself; and in the engine block.
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Segundo Hiromori Mori, Technical Assistance Consultant at Niterra do Brasil, the lack of signal from the speed sensors makes it difficult to start the vehicle and, in some cases, The phase sensor can replace some of the information for the item in question. "In this case we will have a longer match, This absence reduces the possibility of better engine management.", says the technician.
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Mori lists some problems and their respective solutions that can help drivers be more aware of how to take care of these components:
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1) Clearance and misalignment of crankshaft and flywheel: The problem triggers a longer match, which can affect the operation of the sensors. "In this scenario, It is important to pay attention to gaps and misalignments, Measurement of components is required when the problem persists. This measurement requires specific equipment and greater intervention in the engine.", Mori explains;
2) Failures such as light switching on and difficulty starting the engine: according to the Niterra expert, in general, There is no way to prevent a component problem, Therefore, it is always best to ensure the maintenance of the vehicle according to what is recommended by the manufacturer, In some cases where the sensor is located in the flywheel there is an accumulation of metal chips coming from the clutch system, in this case, We must always keep the sensor clean and free of residues.
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3) Rotation sensors do not have direct repairs: There is no pre-established periodic maintenance for the speed sensor, warns Mori. "The best way to take care of the sensors is to perform basic maintenance on the engine and ignition system, in addition to the oil change", clarify;
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4) Rotation Sensor Diagnostics: To make a diagnosis of the sensor it is necessary to measure its signal with an oscilloscope. If it's a hall type, It will be necessary to measure the correct feeding of the sensor with a multimeter or oscilloscope. "It is important to emphasize that the speed sensors must have a distance between them and the crankshaft or flywheel", informs the Niterra expert;
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5) Rotation Sensor Replacement: The exchange is executed in a simple way, However, in engines where the sensor is located behind the flywheel, it is necessary to remove the transmission. It is worth noting that these sensors do not allow repair. There are also motors in which it is necessary to perform a process of synchronizing the rotation sensor with specific equipment. In the case of hall-type sensors, the correct supply of the component must be checked.
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6) Risks of driving a vehicle with damaged speed sensors: according to Niterra's consultant, The vehicle may simply not work. If the engine does not have a phase sensor - more common in vintage automobiles - Lack of signal will immobilize the engine, inhibiting its operation.
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