International Journal of Research (IJR) Vol-1, Issue-10 November 2014 ISSN 2348-6848 Page | 1019 A Study on Problem, Causes and Aids of Cold Start Performance on Internal Combustion Engine 1 Gourav Patel, 2 Lakhan Puri Goswami, 3 Chandrashekhar Khadia, 4 Prakash Kumar Sen, 5 Shailendra Kumar Bohidar 1,2,3 Student,Bachelor of Engg.,Mechanical Engineering Kirodimal Institute of Technology, Raigarh C.G. Raigarh, Chhattisgarh, INDIA Email: gouravpatel31@gmail.com 4,5 Faculty, Mechanical Engg. Department Kirodimal Institute of Technology, Raigarh C.G. Raigarh, Chhattisgarh, INDIA Abstract — Internal combustion engine is sensitive to atmospheric condition. In the stage of cold start of an internal combustion engine, the cold start performance of an internal combustion engine on normal working is significantly higher than the condition at lower surrounding temperature. In cold climate regions cold start problem is a big issue and the review tries to view about this critical issue. Keywords—Internal combustion engine, cold start performance, lubricant, CI engine. I. INTRODUCTION The power to drive the wheels of a vehicle is achieved by the internal combustion engine. Easy starting from cold is very important requirement of a CI engine. To ensure easy cold starting, frequently compression ratios higher than necessary are used [1].The lubricant system and a coolant system needs to served in internal combustion engine. The lubricant system is used to reduce friction in moving elements of engine and the cooling system is used for maintaining the temperature of engine within safe limit. Table.1 Nomenclature It is largely accepted that the combustion efficiency of a modern internal combustion (I.C.) engine is well optimized, with approximately 98% of the energy contained within the fuel being released on combustion in diesel engines and 95– 98% in gasoline engines[2]. The properties of lubricants are highly temperature dependent and without exception, engine lubricants are designed to be at their most efficient at steady state operating temperatures which range between 100 0 C and 110 0 C[ 3,4].Will et al. [5,6] estimated that frictional losses in the engine during the early stages of warm-up (when the engine is in the region of 20 0 C) can be up to 2.5 times higher than those observed when the lubricant is fully warm. If this temperature is reduced to a cold-start scenario of 0 0 C, then Samhaber et al. [7] predicted increases in fuel consumption of up to 13.5%. During the engine warm-up phase, there are effectively three thermal masses interacting with each other, namely the main engine block, the lubricant and coolant [3].Of the three the coolant is the fastest to respond owing to its temperature being closely coupled to that of the combustion gases [2,9,10].In contrast, the lubricant temperature and block temperature are generally much slower to respond owing to the block having a large thermal inertia and the lubricant being much less closely coupled to the combustion process [4,11,12]. The desired increase in temperature of the lubricant during the warm-up phase results from some direct transfer of heat from the cylinder I.C. Internal combustion NEDC New European Drive Cycle S.I. Spark ignition C.I. Compression ignition _2