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The autonomy is one of the problems that limited the integration of electric vehicle. Among different solution is the use of hybridization with hydrogen-fuel to supply the vehicle. This study presents an experimental study on a bi-fuel generator (hydrogen-gasoline), the influence of mixture richness (for hydrogen) have been investigated. Experimental results show that for a hydrogen-rich mixture,...
This paper investigates the influences of the initial temperature on the performance of free piston linear generator (FPLG). Based on multi-dimensional combustion model, the effects of initial temperature on in-cylinder pressure, in-cylinder temperature and NOx emissions are studied. The cause of NOx in internal combustion engine is introduced and the NOx formation mechanism of gasoline FPLG is explored...
Current focus on the reduction of tailpipe CO2 emissions of road vehicles is increasing the interest in hybrid and electric vehicle technologies. Pure electric vehicles, however, require bulky, heavy and expensive battery packs to enable an acceptable driveable range to be achieved. Extended-range electric vehicles (EREVs) partly overcome the limitations of current battery technologies by having a...
This work presents an electric vehicle range extension system based on a hydrogen genset which is obtained by retrofitting a 5kW gasoline genset equipped with two generators. The power provided by the hydrogen genset is used to extend the battery pack autonomy through a serial topology. This genset has the potential to be less expensive and more robust to extreme low operating temperature than a fuel...
Our literature search shows vastly fragmented scientific results for use of Hydrogen-On-Demand (HOD) in mainstream automotive and transportation applications. These seemingly disconnected advances in electrochemistry, power electronics, electromagnetics, material coatings and plasma physics have possibly contributed to the slow progress in the development of safe, reliable, affordable and scalable...
An improved fuzzy adaptive PID controller is proposed in the paper, in which the count of fuzzy quantity can be increased according to the practical situation. During operation period, the improved fuzzy adaptive PID controller can amend PID coefficients automatically to enhance dynamic characteristic of electronic speed governor according to gasoline engine speed change each stage in the transition...
A 5 kW gasoline generator was converted into gas generator that could run on pipeline natural gas. A fire-restrain device and pressure reducer are designed to ensure safety. The measures such as increasing the compression ratio, enlarging spark advance and using a high-energy ignition are taken to improve the performance of the engine running on gas. Experiment has been done to compare the performances...
On a diesel engine of generating unit, investigated the control strategy of the diesel-water coal slurry blends combustion and the speed of the diesel engine, and developed an electronic control unit. The experimental results show that this control strategy can limit the engine speed, output voltage and frequency of the generating unit to a regulated range, and keeping them steadily.
In this paper the optimization of wearable power system comprising of an IC engine, motor/generator, inverter/rectifier, Li-battery pack, DC/DC converters, and controller is performed. The Wearable Power System must have the capability to supply an average 20 W for 4 days with peak power of 200 W and have a system weight less then 4 kg. The main objectives are to select the engine, fuel and battery...
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