What are the components of an engine abnormal noise diagnostic instrument?
2 Answers
The components of an engine abnormal noise diagnostic instrument include: sensor, frequency selection network, power amplification, phase selection, display, and other parts. The engine abnormal noise diagnostic instrument usually adopts an acceleration sensor, and its usage method is: 1. Use strong magnetic material to attach the sensor to the engine surface; 2. Hold the probe-type sensor and apply a certain pressure to make the probe contact the part to be inspected. The components of an engine are: 1. Valve train; 2. Crank linkage mechanism; 3. Ignition system; 4. Cooling system; 5. Lubrication system; 6. Supply system. Engine maintenance methods: 1. Use high-quality engine oil; 2. Use qualified coolant; 3. Regularly clean the radiator scale; 4. Regularly remove carbon deposits from the car; 5. Replace the car's air filter, oil filter, and fuel filter on time.
I've used this device, which mainly consists of three parts: the probe acts like a doctor's stethoscope, needing to be placed on the engine to capture sounds; the small box in the middle is the key, decomposing various noises into high and low frequency signals; finally, it connects to a phone or display screen, showing red or yellow alerts indicating what kind of issue it might be—perhaps a loose valve or a worn timing chain. Having it in the shop saves a lot of effort, allowing precise identification of the source of abnormal noises, much more reliable than relying on an experienced mechanic's ears, since machines don't get tired. To use it yourself, you need to pair it with a software database that stores various car models' noise samples for comparison to diagnose the problem.
