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Abstract: To evaluate the performance of newly designed electro-pneumatic valves (EPVs) for the air-powered engine (APE) and study laws of parameters affecting them, a simulation model was established based on the thermodynamics and mechanics theories. Experiments were set up to determine the instantaneous effective orifice area of solenoid valve by the constant volume discharge method. The simulation model was also validated by comparing the measured displacement curve with the simulated displacement curve of the valve in the pressure of 0.16 and 0.49 MPa. simulation and experimental results showed that maximum working frequency of the designed EPV could reach 30 Hz corresponding to 2000 r/min of engine rotating speed. Based on simulation results, impacts of temperature and pressure of control air on delay time, full opening/closing time and seating velocity of EPV were analyzed. The simulation model could also act as EPV simulation prototype in designing the air exchange control system of APE.

[1] Cai, J.L., Yu, X.L., Yuan, G.J., Shen, Y.M., 2004. Influence of port timing on work process of air-powered engine. Journal of Zhejiang University (Engineering Science), 38(1):65-69 (in Chinese).

[2] Chen, Y., Liu, H., Tao, G.L., 2005. Simulation on the port timing of an air-powered engine. International Journal of Vehicle Design, 38(2/3):259-273.

[3] Daw, N.A., Wang, J., Wu, Q.H., Chen, J., Zhao, Y., 2003. Parameter identification for nonlinear pneumatic cylinder actuators. Lecture Notes in Control and Information Sciences, 281:77-88.

[4] Higelin, P., Vasile, I., Charlet, A., Chamaillard, Y., 2004. Parametric optimization of a new hybrid pneumatic-combustion engine concept. International Journal of Engine Research, 5(2):205-217.

[5] Jia, G.Z., Wang, X.Y., Wu, G.M., 2003. Development of the two-stage pneumatic extra-high pressure on-off valve. Machine Tool & Hydraulics, (3):12-13 (in Chinese).

[6] Jia, M., Gouming, Z., Harold, S., Jim, W., 2007. Adaptive Control of a Pneumatic Valve Actuator for an Internal Combustion Engine. Proceedings of the 2007 American Control Conference, New York City, USA, p.3678-3685.

[7] Lenz, H.P., Geringer, B., Smetana, G., 1989. Initial Test Results of an Electro-hydraulic Variable Valve Actuation System on a Firing Engine. SAE 890678.

[8] Liu, H., Tao, G.L., Chen, Y., 2005. Research on the Displacement and Stroke-bore Ratio of the Air-powered Engine. The Sixth International Conference on Fluid Power Transmission and Control, ICFP 2005, Zhejiang University, Hangzhou, China, p.381-384.

[9] Liu, L., Yu, X.L., 2008. Practicality study on air-powered vehicle. Frontiers of Energy and Power Engineering in China, 2(1):14-19.

[10] Richer, E., Hurmuzlu, Y., 2000. A high performance pneumatic force actuator system: Part I—nonlinear mathematical model. Journal of Dynamic Systems, Measurement and Control, 122(3):416-425.

[11] Ruan, J., Burton, R., Ukrainetz, P., 2002. An investigation into the characteristics of a two dimensional “2D” flow control valve. Journal of Dynamic Systems, Measurement and Control, 124(1):214-220.

[12] Sugimoto, C., Sakai, H., Umemoto, A., Shimizu, Y., Ozawa, H., 2004. Study on Variable Valve Timing System Using Electromagnetic Mechanism. SAE 2004-01-1869.

[13] Topcu, E.E., Yuksel, I., Kamis, Z., 2006. Development of electro-pneumatic fast switching valve and investigation of its characteristics. Mechatronics, 16(6):365-378.

[14] Trajkovic, S., Milosavljevic, A., Tunestal, P., Johansson, B., 2006. FPGA Controlled Pneumatic Variable Valve Actuation. SAE 2006-01-0041.

[15] Watson, J.P., Wakeman, R.J., 2005. Simulation of a Pneumatic Valve Actuation System for Internal Combustion Engine. SAE 2005-01-0771.

[16] Yu, X.L, Yuan, G.J., Shen, Y.M., Liu, Z.T., Su, S.C., 2002. Theoretical analysis of air-powered engine work cycle. Chinese Journal of Mechanical Engineering, 38(9):118-122 (in Chinese).

[17] Zhou, F.Z., Li, L.Q., Liu, Z.W., Ren, D.Z., 1998. Design and study of high-speed on/off digital valve. Chinese Journal of Mechanical Engineering, 34(5):101-105 (in Chinese).

[18] Zuo, C.Q., Qian, Y.J., An, D., Ouyang, M.G., Yang, F.Y., 2007. Experimental study on air-powered engine. Chinese Journal of Mechanical Engineering, 43(4):93-97 (in Chinese).