Factors That Affect The Thermal Properties Of The Engine

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Abstract The efficiency of an automobile engine is low as all the energy produced by the engine by burning the fuel is not used completely. A large portion of the energy is lost in friction, cooling and exhaust heat. This lost energy is almost around 50% [1]. Heat is a major reason for the loss in efficiency. All of the automotive industry is working towards reducing the losses by making more efficient technologies which can improve the vehicle efficiency. In this project we focus on the various factors that affect the powertrain performance related to thermal management. Heating and cooling of the engine to improve efficiency is the main objective of this project. In this project we have considered the four main characteristics that…show more content…
This is just an attempt to make use of the current developments in the industry efficiently. No industry has developed as rapidly as the automotive industry which moved completely from carburetors to electronic fuel injectors in mere one decade. This improved the efficiency of the vehicle tremendously. Back in the days when there were fewer vehicles on the road and gas prices were also low, it was not a major concern. But currently with the number of vehicles and sky rising fuel prices fuel efficient vehicles are a need of the hour in the current situation. [1] 2. Engine Oil: Engine crankcase oils influence automotive fuel efficiency through the energy required to overcome viscous shear and boundary friction. Energy Conservation is an important performance feature of gasoline engine oils. Studies of power loss in internal combustion engines indicate that only 40% of the power developed by motor vehicles is available for useful work output and about a quarter of this work is consumed by friction losses. With half of these losses occurring in the piston assembly alone, the behavior of lubricants in this part of the engine are of particular importance. Past improvements in the lubricant-related fuel savings have principally derived from the development of the lower SAE viscosity grades. Fuel economy has linear relationship with

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