What's the sound of the train?

What's the sound of the train? This sound is produced by the collision between the wheel and the rail interface. There is a certain gap between the two rails, mainly considering the reason of thermal expansion and cold contraction. Now the high-speed rail track is seamless, but the cost is high. Personal understanding

Onomatopoeia is used to describe the old steam train, which can be used as "Woo-woo ~, frame-frame-frame ..."

The sound of rolling is similar to "brushing", and it is a bit like the sound of a stove when it is slow.

The wheel-rail crash is clicking or something.

Basket booth ~ ~ basket booth

A long whistle: the train is ready to start; Two long sounds: the train retreated;

Three sirens: call signal: ask the protective personnel to evacuate;

One long sound and one short sound: steam on signal; One long sound and two short sounds: steam closing signal; One short sound and one long sound: bow lowering signal on the way; Two short and one long sounds: call signal; One long and three short sounds: alarm signal; A short beep: try to read the automatic brake and repeat the signal; Two short, hearty and intestinal-rich lights serve the dog axe: relieve and let go of the signal; Three short sounds: the signal to tighten the handbrake; Continuous short sound: emergency stop signal.

What's the sound of the train? Besides, besides, besides.

What's the sound of opening the door? What's the sound of hooves? What is the whistle of the train? Shut the door with a squeak.

Di ~ ~ ~ ~ The train honked.

The clatter of hooves ~ ~ ~ ~ ~ ~ ~

Personal feeling

What's the sound of a car? (1) step on the accelerator, found that the acceleration is not obvious, there is no power, the engine has a hysterical voice. The most likely time is when the engine is hot, cold or short of oil.

The causes of such problems can be divided into air filter, spark plug, ignition wire, gasoline, gasoline filter, gasifier, oil pump and other problems. Check whether the air filter is dirty, whether the spark plug is old and needs to be replaced, whether the ignition coil is broken, and whether the gasoline is dirty, such as water in the oil circuit. And check the oil pump.

(2) The engine hisses, just like steam or air coming out of the engine. Generally, after hearing this sound, the engine will lose power quickly. Possible problem, engine overheating, check the cooling system. The exhaust system is blocked, and the vacuum tube leaks or breaks.

(3) The engine will whir when accelerating, or it will appear when decelerating. In short, as the speed changes, the volume will also change. Possible cause: the power steering oil is insufficient and filled with oil. The generator bearing may be damaged. When there is a problem with the power steering pump and water pump, it will also produce similar noise.

There is a lot of noise in the exhaust pipe, which is very annoying. Sometimes similar sounds will come from the front section. The main problem is the exhaust system. Check whether the exhaust pipe is broken.

(5) When the engine changes speed, it makes a clicking sound, as if something is patting metal. It may not be heard when accelerating, which may be caused by the cylinder valve. You can change the adjusting valve. Lack of oil may also cause similar problems, and the oil pressure is relatively low, so it is necessary to check the oil pressure.

⑥ When you step on the accelerator pedal, you will hear a bang, bang sound from the exhaust pipe. The sound may not be loud, the car will not drive abnormally, and fuel consumption will increase. It is recommended to check whether the muffler and exhaust pipe are damaged.

Engine noise, tire noise, wind noise, body panel noise, etc.

Describe the problem in detail. Do you think it's an abnormal sound from a suspected car fault or something?