Development of a Magnetic Coupling Water Pump for a Four-Stroke 50cm3 Scooter Engine 2002-01-0858
In the development of a magnetic-coupling water pump, the pulling-out (disengagement) of a coupling that led to the stopping of an impeller was a concern. Upon analysis of the behavior of the magnetic coupling, presence of two types of the pulling-out was found, that is, the pulling-out resulting from a lack of transfer torque in the high-speed revolutions and the pulling-out due to the resonance of an inner magnet and an outer magnet. Main factors that affect the pulling-out are the angular velocity input to the drive side, the moment of inertia of the driven side, characteristics of the magnetic coupling, and a damping from coolant. Using a measurement and simulation of the behavior of the water pump, factors were analyzed and the process of pulling-out was clarified. As a result, design specifications that prevented the pulling-out were established.
Citation: Miyake, Y., Niino, T., Fukamachi, M., Nabeya, S. et al., "Development of a Magnetic Coupling Water Pump for a Four-Stroke 50cm3 Scooter Engine," SAE Technical Paper 2002-01-0858, 2002, https://doi.org/10.4271/2002-01-0858. Download Citation