Current Issue : April - June Volume : 2013 Issue Number : 2 Articles : 4 Articles
This paper is aimed to gain a better understanding of the relationship between environmental scanning\r\nand performance. A quantitative, non-experimental, and descriptive-analytic questionnaire survey\r\ndesign was used in this study. A random sample was drawn from members of Iranian Automobile Parts\r\nManufactures Association (IAPMA). The results of stepwise regression analysis indicated that scanning\r\ncompetitors environment is the major and the only factor that affects performance. Thus, parts\r\nmanufacturing companies can focus deeply on the competitors� environment to improve their\r\nperformance....
Due to the advancement in technology and consumer electronics, automotive infotainment system is growing\r\nrapidly. More and more new technologies and devices are integrated into the system. All the infotainment electronic\r\ncontrol units (ECUs) are networked in the automotive platform. Therefore, it has always been a challenging topic for\r\n \r\n \r\n \r\n \r\n \r\n \r\n\r\n \r\n\r\n \r\n\r\n \r\n\r\n\r\n\r\nand user demands. Until the last few years, automotive devices were integrated using Controller Area Network (CAN)\r\ntechnology. Due to the slow speed of data transfer in Controller Area Network (CAN) (generally up to few hundred\r\nKilo Bytes per second), a new technology named as MOST (Media Oriented System Transport) was introduced.\r\nHere, the data is transferred optically. For the last few years, more and more applications including Navigation\r\nsystem, Multi Media Player, iPod, SD Card, USB Memory, Instrument Cluster, Digital Tuner sand Telephony have\r\nbeen integrated into the MOST system. Data transfer rate of up to 150 MB its per second is realizable using MOST. In\r\nthis paper, MOST network architecture which is the backbone of modern infotainment platform, network management\r\nprotocols and related devices are presented....
An air flow meter for measuring the intake air of an automobile engine is\r\npresented. It is based on a miniaturized silicon thermal mass flow sensor using a thick\r\nporous Si (Po-Si) layer for local thermal isolation from the Si substrate, on which the\r\nsensor active elements are integrated. The sensor is mounted on one side of a printed\r\ncircuit board (PCB), on the other side of which the readout and control electronics of the\r\nmeter are mounted. The PCB is fixed on a housing containing a semi-cylindrical flow tube,\r\nin the middle of which the sensor is situated. An important advantage of the present air\r\nflow meter is that it detects with equal sensitivity both forward and reverse flows. Two\r\nprototypes were fabricated, a laboratory prototype for flow calibration using mass flow\r\ncontrollers and a final demonstrator with the housing mounted in an automobile engine\r\ninlet tube. The final demonstrator was tested in real life conditions in the engine inlet tube\r\nof a truck. It shows an almost linear response in a large flow range between ââ?¬â??6,500 kg/h\r\nand +6,500 kg/h, which is an order of magnitude larger than the ones usually encountered\r\nin an automobile engine....
This study investigates the transient effects of heater on CO2 emissions in an automobile. In the\r\nevaluation of comfort in automobiles, in general temperature, humidity and air velocity measurements\r\nare taken. It is also important to assess the CO2 emission of the air inside a car. The aim of this study\r\nwas to measure the CO2 emissions with different occupant numbers, different air velocities with\r\ndifferent heating options. All experiments were carried out in a Fiat Albea 2005, during winter months.\r\nCO2 emissions and the air temperature values were measured from the breathing zone of the driver. It\r\nwas observed that CO2 emissions increased rapidly in the first 10 min and stayed stable after 15 min for\r\nair-recirculation mode and CO2 emissions were significantly higher than that of air intake from the\r\noutside environment, which is 4.65 times of the air intake mode by mean values. Occupant numbers\r\nhave effect on CO2 emissions, and two sedentary persons have 1.24 times greater CO2 emissions than\r\nthat of one sedentary person without air-condition mode. Full heating period also affects the CO2\r\nemissions in a car, and 20 min of heating period have 1.12 times greater CO2 emissions than that of 10\r\nmin of full heating period. It can be suggested that CO2 emissions must be accounted for the driving\r\nsafety parameters in the cars....
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