发动机, 测试仪器, 设计, 油耗, 标定

Aiming at the common problems of engines’ fuel-consumption measuring and testing technology, combining with the domestic and foreign research level and development trend, adopting sensing technology, single chip microcomputer(SCM) control technology and display technology, a research of intelligent fuel-consumption testing technology was made. A mathematical model of engines’ fuel-consumption testing system was established based on the testing principles;its hardware and steering circuit were designed in accordance with its functional requirements; its control procedures were programed to test petrol engine and diesel engine on the road or indoors in a steady-state and dynamic way. Through theoretical error analysis and experimental calibration, the accuracy of fuel-consumption testing can reach 0.4%.