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Micro-controller Based Electrical Energy Monitoring And Control System for a Low Power Two Wheeler Application

TVS Motor Company, Hosur, India-K. L. Jean, S. J. Dhinagar
Published 2005-01-19 by The Automotive Research Association of India in India
Automotive electrical system forms the backbone of the modern vehicles. The increase in electrical and electronics equipment fitted in the vehicle has resulted in increased power requirements. Today's two-wheeler vehicle electrical system has a magneto, which is the main source of energy and it is directly coupled with the engine shaft. The magneto output charges the battery as well as supplies power to the load.Because of the engine magneto coupling, as the engine speed increases, the output power of the magneto also increases. So even when power is not required and not necessary in certain situations, power is being generated but not utilized, at the cost of loading the engine and thereby increasing its fuel consumption. This surplus power generation causes power wastage and leads to inefficient power utilization. This unnecessary loading of the engine also reduces the engine torque for traction.The electrical loads on the battery and the magneto are at present controlled by the usage pattern of the driver because the loads are directly linked with the sources by means of the switches.…
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Development of a Low Cost Engine Simulator for HIL Testing

TVS Motor Company, Hosur, India-B. S. Rohini, Himadri B. Das, K. N. Kavitha, S. J. Dhinagar
Published 2005-01-19 by The Automotive Research Association of India in India
The growing challenges being met by the automotive industry are raising the needs and expectations for detailed simulation with in short time. Today there is more pressure to get products to market faster and reduce design cycle times. This has led to a need for dynamic testing, where components are tested while in use with the entire system, either real or simulated, unlike in static testing where only typical functional testing is done. This dynamic testing is defined as Hardware-in-Loop (HIL) testing where it includes sensors to send signals to the control system, actuators to receive signals, a controller to process data, a Human-Machine Interface (HMI) and a development post simulation analysis platform.The engine simulator, which is proposed in this paper, has been developed by TVS-M using a high speed embedded controller with a FPGA based I/O module. In the background a complex plant model of engine is running in a dedicated operating system platform. This simulator generates engine related signals (crankshaft signal, engine temperature signal) in response to the control signal generated by the…
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LED: An Alternate Solution For Two-Wheeler Lighting

TVS Motor Company, Hosur, India-S. Sudharsan, V. Madhurisha, G.R. Jayapal, Vinay C Harne
Published 2003-08-22 by The Automotive Research Association of India in India
Traditionally incandescent light bulbs are being used for two-wheeler lighting. These incandescent bulbs consume a lot of electrical power and most of the energy is wasted as heat. Hence, there is a need for an alternate technology, where there is a reduction in electrical energy consumed. LEDs convert electricity into light more efficiently than the inc andescent bulbs. The use of LED in motor vehicles reduces the amount of electrical power required by the vehicle. This allows the use of small alternators or batteries. The estimated power saving done by replacing dash board lighting turn signal assemblies and tail lamp assemblies by LED's will be around 60%. Small size of LED allows considerable design flexibility. LED assemblies are expected to last the life of the vehicle. This paper discusses the performance, efficiency and reliability of both incandescent bulbs and LEDs, and substantiates the use of LEDs as an alternate solution for two-wheeler lighting.
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