Optimization of Fuel Delivery Variation in PFConventional Pump
Pump is the principle segment in the engine. The major problem identified is, the required fuel delivery is not optimized at the different speeds and the fuel delivery variation was more at the constant speed. The experimentation is conducted in a leading automobile industry to optimize this parameter. Utilizing critical thinking methodology, the major fuel delivery variation at 1800 RPM was observed. The fundamental goal of this work to optimize the fuel delivery variation and reduce the spread. The root cause is carried out utilizing advanced Shainin Technique and Design of Experiments (DOE)
Optimisation of Fuel Injection Pump Parameters of Tata 1613 & Tata 609 Engine Using Diesel & Biodiesel
Often called 'the heart of the engine', the fuel injection system is without any doubt one of the most important systems. It meters the fuel delivery according to engine requirements, it generates the high injection pressure required for fuel atomization, for air-fuel mixing and for combustion and it contributes to the fuel distribution in the combustion system-hence it significantly affects engine performance emissions and noise. In this Investigation optimization of control parameters used for optimum control of fuel delivered by the FIP of the Automotive engine is Analyzed. The parameters observed were fuel delivery, input current to driving motor, rpm of the pump, control rack travel and number of strokes. The fuelinjection system is the most vital component in the working of CI engine. The engine performance (power output, efficiency) is greatly dependent on the effectiveness of the fuel injection system and its parameters. The experiment is conducted on two MICO Bosch FIP of TATA Engine (TATA 1613 and TATA 609 FIP) as per DoE using three input parameters at different ranges and conditions. The mathematical models are developed for Fuel delivery of FIP using taguchi,anova regression. This paper also explains the optimization of FIP parameters using biodiesel. Key words-Fuel delivery, InjectionPump (FIP), DoE, Taguchi,Anova.
Design of a low power viterbi decoder for wireless communication applications
In this paper, a novel low-power Viterbi decoder with soft decision is proposed. For the branch metric of the Viterbi decoder, our design employs a soft-decision method to improve its correction capability. In order to find the survivor path efficiently, we modify the classical Viterbi decoding algorithm into a new one. This new algorithm is similar to the register-exchange method with lower latency, but using RAM instead of register banks for recording the output bit-stream of the survivor path. Hence, our design can provide a low-power design. Finally, the chip of this design consumes about 28.6K gates using TSMC 0.18 μm CMOS technology. The power consumption of our chip is about 19.5mW at 100MHz.