Search Results

This paper describes and investigates the possibilities and the advantages of using LIN as a multiplexed electrical system in a vehicle. LIN is a communication protocol designed for controlling simpler electrical components in a vehicle, like for example switches, sensors and actuators. Investigations have been done concerning the technique behind LIN as well as the recourses needed in order to implement LIN-communication between components on the power window of a Maruti Suzuki's ZEN car. Clearly the benefits of using LIN are low cost to feature ratio and at the same time reducing harness costs and enabling higher reliability of the vehicle functions.

Engine maps consisting of three-dimensional contour plots of engine performance parameters such as bsfc in the engine speed - bmep plane give a large amount of information in a very concise manner. Such maps can be drawn for many more parameters of interest if a high speed data acquisition system, such as E-DACS (Engine Data Acquisition and Control System) which was developed in-house, is used to obtain the transient data of combustion chamber pressure. New maps of: pmax, (dp/dθ)max, etc. from the pressure-crank angle data; isfc, imep, pumping losses, etc. from the pressure-volume data; ignition delay, burn angle, maximum rate of burning, maximum burnt gas temperature, etc. after conducting heat release analysis using the pressure-crank angle data, can be generated. Such an enlarged view offered by these new sets of engine maps will definitely prove useful to engineers, giving them newer insights.