The size of atomization hole depends on different vehicles, and different vehicles have different specifications of oil inlets, which is uncertain. The larger the hole, the better the atomization effect, but the higher the fuel consumption. In fact, the vehicle engine was developed after many tests, so it has the best cost performance compared with the original accessories. Otherwise, this engine has no competitive advantage in the market, and so does the relative accessory "atomizing needle valve", so it is best not to mix and match different models to avoid unnecessary.