Mr. Lefeng Gu Profile

Lefeng Gu

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Proceedings Article | 31 December 2010 Paper

Temperature characteristics for PTC material heating diesel fuel

Lefeng Gu, Xiaolu Li, Jun Wang, Ying Li, Ming Li

Proceedings Volume 7544, 75445C (2010) https://doi.org/10.1117/12.885831

KEYWORDS: Ceramics, Data acquisition, Temperature metrology, Carbon monoxide, Computing systems, Dynamical systems, Temperature sensors, Control systems, Analog electronics, Sensors

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This paper gives a way which utilizes the PTC (Positive Temperature Coefficient) material to preheat diesel fuel in the injector in order to improve the cold starting and emissions of engine. A new injector is also designed. In order to understand the preheating process in this new injector, a dynamic temperature testing system combined with the MSP430F149 data acquisition system is developed for PTC material heating diesel fuel. Especially, the corresponding software and hardware circuits are explained. The temperature of diesel fuel preheating by PTC ceramics is measured under different voltages and distances, which Curie point is 75 °C. Diesel fuel is heated by self-defined temperature around the Curie point of PTC ceramics. The diesel fuel temperature rises rapidly in 2 minutes of the beginning, then can reach 60 °C within 5 minutes as its distance is 5mm away from the surface of PTC ceramics. However, there are a lot of fundamental studies and technology to be resolved in order to apply PTC material in the injector successfully.

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