PTC-base Injector Fuel Heat Transfer Analysis and Research during Cold-start
The vehicle has a high harmful material emission during cold-start. It has a close relationship with temperature of the fuel. In this paper, a PTC-base injector is presented, which is embedded PTC material around the fuel ducts of common injector and powered by car inverter. The PTC material possesses a low resistance and quickly generates heat when its temperature is lower than Curie point. This heat will be transfer to the fuel oil. And while the temperature come to the Curie point, the resistance sharply rise and the PTC material almost stop generating heat. Utilizing this special resistance-temperature characteristic, the fuel temperature of nozzle can be controlled in an ideal scope during cold-start. The main work of this paper is modeling for PTC-base injector and analyzing fuel heat transfer in different condition. According to the simulation results, a conclusion is draw that the fuel can be heated very well in PTC-base injector. This result shows that PTC-base injector will produce positive effect to reduce emission.
PTC injector heat transfer engine cold-start
Wang Jun Li Xiao Lu
Mechnical and Electronical Engineering College China JiLiang University Hangzhou, Zhejiang province
国际会议
太原
英文
252-255
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）