When the engine is ignited, the starting opportunity will suddenly increase to more than 16,000 rpm. At this time, the overheated rotor will break up when the centrifugal force suddenly increases! The driver was not aware of it. Only when he started the next time, he found that the starter did not respond, so he took it back and negotiated with the dealer.
Therefore, we have two reasons. First, the vehicle is difficult to start, the starting time is too long, causing the temperature to rise, and the second is that the rotor commutator is resistant to high temperature and the degree of firmness is low.
In addition, there are some motor rotor commutators. Although there is no break-up, a certain copper strip of the commutator has been bulged or collapsed, which is what we call the "squatting" and "jumping" phenomenon. It is also the same reason. .
Therefore, as a manufacturer, we should start with these two aspects and choose better materials. In addition, the factory believes that the commutator breaks up, as long as it does not appear in large numbers, in the three-package period, the user and the manufacturer should be jointly responsible. We think this is more objective, and manufacturers must work hard to find better materials to reduce this phenomenon. However, so far, it is difficult to put an end. I think this phenomenon will change a lot with the continuous improvement of material technology.