What is a crankshaft-speed sensor? What is the function of the crankshaft speed sensor? What is the purpose of the crankshaft location sensor?
The crankshaft speed sensor, one of the most critical electronic devices in a vehicle’s engine, is also important. This sensor is also known as top dead center sensor (or crankshaft location sensor), crankshaft speed sensor (or crankshaft sensor). It is used to measure the rotational speed. 1. It transmits to the electronic controller unit (ECU) the exact position of each piston in the cylinder (top- or bottom-dead center). This information is then used by the engine control module (ECU), which regulates ignition and fuel injection. In order to collect the data accurately, it is important that the crankshaft be in good condition. It is located near the crankshaft or camshaft belt.
Detection function
The speed sensor is made up of a permanent magnet and a coil. This structure generates voltage when magnetic fields change. A large voltage variation is caused by the magnetic field fluctuation (due to the loss of a tooth in its sensor gear). This generates an alternating current AC signal, which is used by the engine management module (EMU), to calculate the rotational speeds. EMU can be described as an engine computer. Magnetic oscillation can be used to determine the speed and position the camshaft.
Irregular Pin arrangement
Sometimes, a pin may not appear in consecutive intervals at the crankshaft. The crankshaft may have double pins. This arrangement will vary depending on which vehicle model you have. Sections that do not have pins are known as “Top Dead Spot”. This causes a signal change at TDC. TDC is the main reference point for many motor timing measurements. Here are the camshaft and ignition timing. TDC also controls timing from cavities to pistons and valves.
As the crankshaft turns, signals at these points can fluctuate due to missing or double-ended pins. The TDC position determines how the information is transmitted back to EMU. The engine speed affects the peak voltage of the speed signals. Tension increases with faster rotations. While the voltage is low when the engine idles, it can reach as low as 10 V, while at high speeds it can reach 100 V.
Defective Crankshaft Speed Sensor
For high engine performance, it is important that the crank sensor be maintained at its maximum level. Failing sensors send incorrect data to EMU. This causes the engine’s performance to be poor. Your vehicle may even stall due to this. If the crank sensor fails, the EMU can depend on memory to provide the proper ignition and fuel.
But this temporary situation is temporary. The crank sensor transmits live data that is more useful than static information stored in the EMU. Your vehicle will still run even if it isn’t performing as expected. It is possible to measure the condition of the crankshaft sensor using electronic equipment.
To restore engine performance, a worn or defective sensor must be replaced. You will need to contact a mechanic in this instance.
