The Design and Development of a Temperature Testing System in an Electric Fuel Injection Engine

Abstract

In order to achieve the best engine performance, electronic control unit needs to be provided a different fuel injection and ignition timing corresponding to different engine temperature while in other conditions the parameters is the same, so the temperature of the engine cylinder plays an important role. In this paper, the C8051F020 is used as the main control unit MCU and the data processing unit. The cylinder temperature signal is detected by thermistor temperature sensor and at the same time A/D conversion and data processing are completed. The acquisition temperature values are sent to LED display, while achieving ultra-high temperature alarm and ultra-low temperature alarm. This paper introduced the hardware design of temperature acquisition system, in this section this paper focuses on the choice of the temperature sensor, micro-controller selection and the design of temperature acquisition circuit and temperature display circuit. This paper introduces the software design of the temperature test system. Based on the understanding to C8051F020 MCU, with a micro-controller language this paper assembled a software program of temperature test system including the signal acquisition, A/D conversion and temperature display. This paper also designed a simple structure and processing the data speed of the temperature acquisition system.