The trigger wheel rotates with engine RPMs and causes the speed sensor, or pickup oil, to produce triggering voltage pulses that correspond to engine speed and piston position. 觸發葉輪隨發動機轉速而旋轉，使得轉速感測器或拾波線圈產生與發動機轉速和活塞位置相對應的觸發電壓脈衝。
Through changing rotating speed, the germination rate of forage grass seeds that were treated in the hard seed treatment hit-machine could be increased significantly. 通過改變碰撞機葉輪轉速，可以獲得具有合適擦傷度的牧草種子，滿足提高種子滲透性和發芽率的要求。
