Abstract
The pulse tube engine consists of one piston in one cylinder, cooler with orifice, pulse tube, heater and gas damper with stacked wire gauzes. The pulse tube has the work source in this engine. The gas damper has the function breaking the thermodynamic symmetry. For this research, the engine replaced a gas damper with a sudden expansion tube is proposed. A simple prototype engine, using air at normal atmospheric pressure as the working gas, was fabricated. Effects of expansion tube shape on the engine performance were examined experimentally. The effect of sudden expansion tube was confirmed.
