Hybrid Power Unit Research Articles

Balancing Parameters for a Storage Battery

Means of improving the operational safety and life of rechargeable batteries in hybrid power units and electric vehicles are considered. Passive and active balancing of the storage cells in the battery is investigated. A method of establishing the balancing parameters is proposed.

Embedded Model Based Onboard Diagnosis of Hybrid Power Generation System

Renewable energy is the energy which comes from natural resources such as wind, rain, sunlight, and tides. These resources are generally renewable can be naturally replenished. Therefore, for all practical purposes, and resources can be considered as inexhaustible unlike dwindling conventional fossil fuels. This renewable energy has to be used in an efficient way for that Hybrid systems are used. This paper shows the monitoring of a hybrid power unit. The monitoring system has been conceived for comparing the performance of the power generation unit with reference. Depending upon the performance the fault can be analyzed. The fault can be viewed in local and remote location. LABVIEW software is used for data acquisition and analyzing a fault.

The Control Simulation of Parallel Hybrid Power Unit

A parallel hybrid power unit model has been established on Matlab/Simulink platform. A torque control strategy is put forward in this paper and four working conditions which include starting, acceleration, adding load and unloading are studied. The results of simulation indicates that the control strategy is feasible.

Study of the influence of structural parameters on the dynamic load in the mechanical automotive transmission with hybrid powerplant

This paper presents a method to study of the influence of structural parameters on the dynamic load in the mechanical automotive transmission with hybrid power unit (HPI). The results calculation dynamic loads in the branches of UAZ 5153 parallel hybrid drivetrain are presented.

Diesel Engine Optimization for Electric Hybrid Vehicles

Performance and emission testing for a single cylinder four-stroke diesel engine have been experimentally performed to determine the optimum operation conditions for this engine when it is used as a hybrid power unit. The studied operation parameters included brake specific fuel consumption (BSFC), exhaust emission (NOx, CO, CO2, and O2), and engine life. The results indicate that the lowest BSFC of the engine was found when the engine runs around 1 kW charging load at speed ranged between 1900 rpm and 2700 rpm. As the speed of the engine is maintained constant, the minimum level of BSFC is below 300 g/kW h at around 1900 rpm. The best engine operation conditions, for low emission, are found at engine speed around 2500 rpm. It was found that the oxides of nitrogen remain within the acceptable level (below 180 ppm) for such a diesel engine. The battery charge has been conducted at constant speeds, where the lubricant oil temperature was constant and always below maximum temperature; this is a good indication for longer engine life.

AIRCRAFT PROPULSION SYSTEMS : A DIESEL HYBRID ENGINE

ABSTRACTRecent developments in diesel piston engine technology have increased performancein a very significant way. In this paper a new hybrid diesel-turbine engine is introducedand it is compared to up-to-date turboprops. The weak point of the common rail engineis the difficulty to obtain very fast injectors for large engines. Automotive injectors areavailable only for small power outputs. The problem was solved with a dual chamberspiston with two injectors per cylinder. It is then possible to use off-the-shelf automotivecommon rail components even on very large diesel engines with benefits oncombustion especially at medium low power level. The other more interestingadvantage is a significant increase on crankshaft maximum speed and reduction ofhead mechanical stress. It is then possible to have smaller and more powerfulturbodiesel and hybrid engines. Another advantage is the improved reliability of a dualinjection system. The diesel – turbine hybrid power unit proposed in this papercombines the advantages of the turboprop/turbofan/turboshaft and piston turbo-dieselprop/ turbo-diesel-fan / turbodiesel engines. However, It should be clear than theautomotive commercial common rail components should be treated to use jp4, jp8 andjet(A1) fuels and to fulfil aeronautical requirements.

Airport electric vehicle powered by fuel cell

Nowadays, new technologies and breakthroughs in the field of energy efficiency, alternative fuels and added-value electronics are leading to bigger, more sustainable and green thinking applications. Within the Automotive Industry, there is a clear declaration of commitment with the environment and natural resources. The presence of passenger vehicles of hybrid architecture, public transport powered by cleaner fuels, non-aggressive utility vehicles and an encouraging social awareness, are bringing to light a new scenario where conventional and advanced solutions will be in force. This paper presents the evolution of an airport cargo vehicle from battery-based propulsion to a hybrid power unit based on fuel cell, cutting edge batteries and hydrogen as a fuel. Some years back, IBERIA (Major Airline operating in Spain) decided to initiate the replacement of its diesel fleet for battery ones, aiming at a reduction in terms of contamination and noise in the surrounding environment. Unfortunately, due to extreme operating conditions in airports (ambient temperature, intensive use, dirtiness, …), batteries suffered a very severe degradation, which took its toll in terms of autonomy. This reduction in terms of autonomy together with the long battery recharge time made the intensive use of this fleet impractical in everyday demanding conditions.

Hybrid Vehicles are the Solution of Environmental Problems of Road Transport

The authors describe the benefits of vehicles with hybrid power unit (GSU), consider the schemes of hybrid propulsion vehicles. The article presents a design developed by the experimental all-wheel drive vehicle with hybrid power plant, made by a parallel circuit; description of the experimental vehicle test bench for fuel economy and emissions, held at the Federal State Unitary Enterprise NITSIAMT; the results of tests confirming the reduction of fuel consumption and emissions of cars with hybrid powerplant.

High-Energy DOFC. Battery Hybrid Power Unit (PU) for Portable Computing Based on a Unique Membrane.

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