Browse Publications Technical Papers 2000-01-0543

Effects Contributing to the Temperature Rise of Electromagnetic Actuators 2000-01-0543

This paper discusses the thermal ramifications of using constant current pulse width modulation electronic drive circuits to energize electromagnetic actuators used in digital valves for Diesel fuel injection. The paper develops a differential equation modeling the actuator as an oven whose copper coil acts as the heating element and the thermoplastic encapsulation and surrounding steel are regarded as the oven's walls. These factors are implemented to develop an electrical model equivalent for the oven. The differential equation describing the power dissipation, time, and temperature relationship is solved through the use of Laplace transforms concluding that complex problems can often be handled with simple models.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 40% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.