Current Issue : July - September Volume : 2014 Issue Number : 3 Articles : 4 Articles
This paper discusses the design, modeling, and development of small motorcycle equipped with a HCCI engine\n \n\n \n!\" \n\n\n#\n\n\n$%&\n\n!\nrun in HCCI combustion mode and integrated into a prototype vehicle. Dual-fuel and external EGR strategies were\nused to upgrade the engine speed and torque capabilities of the engine to meet the requirements of the powertrain.\nAn electrical generator, hub-motor, battery pack and other power electronics devices were used to form the electrical\nsystem for the vehicle. The advantages of the proposed design compared to the original motorcycle with SI engine\nand CVT transmission are: 1) a reduction in noxious emissions due to the HCCI combustion, and 2) higher fuel\neconomy in city driving because of the HCCI engine and series hybrid powertrain. Fuel economy was measured by\ndriving the motorcycle on a chassis dynamometer using a sequence of ECE-40 driving cycles. The overall fuel economy\nwas measured to be 73.7 km/L which represents a 139.3% increase in fuel economy over the baseline vehicle....
Due to the passenger�s security, the recognized hidden faults in car engines are the most importantwork for amaintenance engineer,\nso they can regulate the engines to be safe and improve the reliability of automobile systems. In this paper, we will present a novel\nfault recognition method based on the genetic algorithm (GA) and the extension theory and also apply this method to the fault\nrecognition of a practical car engine. The proposed recognition method has been tested on the Nissan Cefiro 2.0 engine and has\nalso been compared to other traditional classification methods. Experimental results are of great effect regarding the hidden fault\nrecognition of car engines, and the proposed method can also be applied to other industrial apparatus....
The objective of this study was to test the performance of diesel engine using diesel B3 mixed with crude palm oil in ratios of 95 : 5,\n90 : 10, and 85 : 15, respectively, and to compare the results with diesel B3. According to the tests, they showed that the physical\nproperties of the mixed fuel in the ratio of 95 : 5 were closest to those of diesel B3. The performance of the diesel engine that used\nmixed fuels had 5ââ?¬â??17% lower torque and power than that of diesel B3.Thespecific fuel consumption of mixed fuels was 7ââ?¬â??33%higher\nthan using diesel B3. The components of gas emissions by using mixed fuel had 1.6ââ?¬â??52% fewer amount of carbon monoxide (CO),\ncarbon dioxide (CO2), sulfur dioxide (SO2), and oxygen (O2) than those of diesel B3. On the other hand, nitric oxide (NO) and\nnitrogen oxides (NO??) emissions when using mixed fuels were 10ââ?¬â??39% higher than diesel B3. By comparing the physical properties,\nthe performance of the engine, and the amount of gas emissions of mixed fuel, we found out that the 95 : 5 ratio by volume was a\nsuitable ratio for agricultural diesel engine (low-speed diesel engine)....
This paper presents the results obtained by the 2WIDE SENSE Project, an EU funded project aimed at developing a low cost camera\nsensor able to acquire the full spectrum from the visible bandwidth to the Short Wave InfraRed one (from 400 to 1700 nm). Two\nspecific applications have been evaluated, both related to the automotive field: one regarding the possibility of detecting icy and\nwet surfaces in front of the vehicle and the other regarding the pedestrian detection capability. The former application relies on the\nphysical fact that water shows strong electromagnetic radiation absorption capabilities in the SWIR band around 1450 nmand thus\nan icy or wet pavement should be seen as dark; the latter is based on the observation that the amount of radiation in the SWIR band\nis quite high even at night and in case of poor weather conditions. Results show that even the use of SWIR and visible spectrum\nseems to be a promising approach; the use in outdoor environment is not always effective....
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