Effect of Fuel Temperature on Operation of High-speed Electromagnetic Actuator Common Rail Injector

摘要

Requirements for the materials of the fastresponse electromagnetic actuators are formulated in this article. Temperature stability is one of the most important requirements for them. The influence of temperature in the range of 16 ... 150 ° C on the magnetic properties of the selected material - DT4C steel was determined experimentally. The experiment result shows that the temperature significantly affects the magnetic properties of the DT4C material. With the increase of temperature the saturation magnetic flux density, the residual magnetic flux density and the coercive force are reduced differently. The temperature increase reduces the magnetization of the DT4C material, but it accelerates demagnetization. The effect of temperature on magnetic permeability is multi-directional for different values of magnetic flux. A strong temperature dependence of the materials of the electromagnetic actuator leads to disruption of the normal operation of the fuel systems of engines with electronic control.