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The main challenge in today's modern engines is to design the parts, which should withstand higher temperatures. To achieve this, selection of materials and process tolerances are very important factors. The product identified in this study is a conventional oil pump, which is an engine auxiliary component. The function of the oil pump is to supply oil to different parts of the engine to lubricate and reduce the overall engine friction. The different speed and load conditions for which the engine is subjected, pose a challenge to the oil pump, to supply the necessary quantity of oil at the required pressure and temperature. Normally, the oil pump is subjected to a temperature of 120°C at higher speeds. However, the peak oil temperature in modern diesel engines can be as high as 140°C to 150°C for a short period of time. For this study, two engine grade oils were selected. Numerical analysis was performed to predict the oil flow rate for these oil grades.

With the introduction of stringent emission norms for two wheeler applications, and need to reduce green house gases emission, it is a challenging task to improve the performance of the engine, especially at part throttle conditions. The typical drawback of spark ignition engine is poor part throttle performance and the Indian driving cycle (IDC) predominantly covers these part throttle operations. Contrary to popular belief, carbureted two wheelers with engine capacity up to 250cc are able to meet regulation Euro III with add-ons like secondary valve and catalyst. Vehicles with EFI systems are more expensive and they are not able to provide any fuel economy benefit or improvement in drivability. Under these circumstances, carburetor designers are working continuously to improve its performance. In order to improve the performance, optimization of slow speed to high speed fueling circuit dividing ratio is of immense importance.

Increasing the efficiency of the Engine parts and reduction in development time with good accuracy are the challenges in the Automotive Industry. Lubricating oil pump has been selected for this study. Existing literatures explain the methodology to generate the rotor profile from the given geometrical parameters of the rotor like eccentricity, tooth radius etc. Invariably the specifications to design the pump are provided in terms of pump performance at various operating conditions. The analytical model developed in this study uses the performance and boundary specifications to generate the rotor profile and to estimate the flow rate at various operating conditions of the pump. This methodology includes the generation of trochoidal profile for inner rotor and modified conjugate profile for the outer rotor and the volume calculation of number of chambers (N) which are created between the rotors during meshing.

The reduction of development time of new Internal Combustion Engines prototype and reduction of fuel consumption are key issues in automotive Industry. Lubricating oil pump systems having potential of reducing fuel consumption by up to 3% in the new European Motor Vehicle Emission Group (MVEG) Cycle. Oil pump feeds lubricant oil into the parts of engine to prevent wear and to cool the moving parts of the engine. Gerotor pump is a special kind of internal rotary positive displacement pump which is driven by crank shaft. It provides high volumetric efficiency and smooth pumping action, and it works well with a wide range of fluid viscosities. Tip to tip clearance, volumetric efficiency, flow ripple and cavitation damage are causes for concern in Gerotor pump with high output flow. To optimize the pump performance, it is essential to understand the flow dynamics inside the pump.