Simulation and experimental study of electro-pneumatic valve used in air-powered engine

Ping-lu, Chen; Yu, Xiaoli; Lin, Lei

doi:10.1631/jzus.a0820373

Cited by 15 publications

(10 citation statements)

References 14 publications

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“…The electromagnetic subsystem of the solenoid valve can be simplified into a series connection of resistive and inductive components [10]. The electromagnetic force is calculated using…”

Section: Dynamic Model Of a Solenoid Valvementioning

confidence: 99%

Dynamic Analysis and Control of the Clutch Filling Process in Clutch-to-Clutch Transmissions

Guo

Liu

Zhang

et al. 2014

Mathematical Problems in Engineering

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Clutch fill control in clutch-to-clutch transmissions influences shift quality considerably. An oncoming clutch should be applied synchronously with the release of an offgoing clutch to shift gear smoothly; therefore, the gap between the piston and clutch plates should be eliminated when the torque capacity is near zero at the end of the clutch fill phase. Open-loop control is typically implemented for the clutch fill because of the cost of pressure sensor. Low control precision causes underfill or overfill to occur, deteriorating shift quality. In this paper, a mathematical model of an electrohydraulic clutch shift control system is presented. Special dynamic characteristic parameters for optimal clutch fill control are subsequently proposed. An automatic method for predicting initial fill control parameters is proposed to eliminate distinct discrepancies among transmissions caused by manufacturing or assembling errors. To prevent underfill and overfill, a fuzzy adaptive control method is proposed, in which clutch fill control parameters are adjusted self-adaptively and continually. Road vehicle test results proved that applying the fuzzy adaptive method ensures the consistency of shift quality even after the transmission’s status is changed.

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“…The electromagnetic subsystem of the solenoid valve can be simplified into a series connection of resistive and inductive components [10]. The electromagnetic force is calculated using…”

Section: Dynamic Model Of a Solenoid Valvementioning

confidence: 99%

Dynamic Analysis and Control of the Clutch Filling Process in Clutch-to-Clutch Transmissions

Guo

Liu

Zhang

et al. 2014

Mathematical Problems in Engineering

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“…The idea of pneumatic engines for transportation was revived again at the end of twentieth century. Many scientific and research works on pneumatic piston engines were carried out across the world in the past few years [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Modern Pneumatic and Combustion Hybrid Engines

Mitianiec¹

2018

Improvement Trends for Internal Combustion Engines

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This chapter presents the possibility of use of the pneumatic piston engine with twostroke cycle or four stroke-cycle of the work as an alternative driving source or additional power for the battery regeneration in the electric vehicles. Additionally, such engine can work together with combustion engine as a drive unit in a road vehicle. During city driving, such engine is driven by compressed air. The energy for the engine work is taken from the energy of the air stored at high pressure (about 30 MPa) in bottles or tanks. The chapter presents the thermodynamic theory included in the mathematical model of the engine based on thermodynamic processes (mass and energy balance). On such considerations, the chapter shows the results obtained from specially written computer program for the determination of the most important factors. The results of the calculations are included in the graphs showing the influence of the control parameters (air pressure, injection timing and rotational speed) on the engine working parameters. Certain chapters concern to a hybrid combustion system with an air injection only for a compression ignition engine in order to achieve higher indicated mean pressure and lower fuel consumption.

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“…Motor Development International (MDI) holds international patents for piston-type CAEs. 15 Chen et al 16 proposed a newly electropneumatic valve for the compressed air-powered engine. Although many have proposed that the output power and efficiency are affected by speed during operation, relatively few studies have reported speed characteristics and a control strategy for piston-type CAEs while working.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy logic speed control for the engine of an air-powered vehicle

Shi

Cai

et al. 2016

Advances in Mechanical Engineering

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To improve the condition of air and eliminate exhaust gas pollution, this article proposes a compressed air power system. Instead of an internal combustion engine, the automobile is equipped with a compressed air engine, which transforms the energy of compressed air into mechanical motion energy. A prototype was built, and the compressed air engine was tested on an experimental platform. The output torque and energy efficiency were obtained from experimental results. When the supply pressure was set at 2 MPa and the speed was 420 r min 21 , the output torque, the output power, and the energy efficiency were 56 N m, 1.93 kW, and 25%, respectively. To improve the efficiency of the system, a fuzzy logic speed control strategy is proposed and simulated. The experimental study verified that the theoretical evaluation of the system was reasonable, and this research can be referred to as the design and control of airpowered vehicles.

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Simulation and experimental study of electro-pneumatic valve used in air-powered engine

Cited by 15 publications

References 14 publications

Dynamic Analysis and Control of the Clutch Filling Process in Clutch-to-Clutch Transmissions

Dynamic Analysis and Control of the Clutch Filling Process in Clutch-to-Clutch Transmissions

Modern Pneumatic and Combustion Hybrid Engines

Fuzzy logic speed control for the engine of an air-powered vehicle

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