Abstract
Pneumatic-hydraulic transmission has been developed for years. However, its dynamic properties are not good enough for application. In this paper, in order to increase the output characteristics, a late-model air-powered vehicle using expansion energy is proposed which can boost energy through a pneumatic-hydraulic transmission. The dynamic characteristics of the air-powered vehicle is modeled and verified by conducting experiment. In addition, the influence of the key parameters of the air-powered vehicle is researched for the optimization of the system performance. Through the results, the author got the conclusion that, firstly, comparison of the results of model and experiment proves the built model to be effective; secondly, input air pressure should be set according to the request of the practical loads, and range of 0.65 to 0.75 MPa can be chosen; thirdly, as a key structure parameter of the air-powered vehicle, ratio of the areas is considered to be set to approximate 8; what’s more, a bigger orifice with a limit will promote the system dynamic characteristic property, and the limit is about 3.5 mm; last but not the least, not too farther position of the rings will increase the quality of output dynamic characteristics. This paper can be a reference for system design of air-powered vehicle and dynamic improvement.
Highlights
For advantages of anti-explosion, zero-emission, and pollution-free, sustainable energy vehicles suitable for friendly environments have been widely adopted as a late model green transport
For promoting working efficiency by using the expansion energy of the compressed air, we proposed a new type of expansion energy used air-powered vehicle using pneumatic-hydraulic transmission
The application of air expansion energy used vehicle is still hard to achieve due to the lack of research on output dynamic characteristics, which caused trouble for the performance improvement of air-powered vehicles [16]
Summary
For advantages of anti-explosion, zero-emission, and pollution-free, sustainable energy vehicles suitable for friendly environments have been widely adopted as a late model green transport. Very little study on any type of sustainable vehicle driven by pneumatic-hydraulic transmission has been reported [14, 15], especially that using air expansion energy. For promoting working efficiency by using the expansion energy of the compressed air, we proposed a new type of expansion energy used air-powered vehicle using pneumatic-hydraulic transmission. The application of air expansion energy used vehicle is still hard to achieve due to the lack of research on output dynamic characteristics, which caused trouble for the performance improvement of air-powered vehicles [16]. What’s more, output dynamic characteristics were studied by analyzing affection of several key structure parameters for inspecting the best performance of the air-powered vehicle with pneumatic-hydraulic transmission
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