Study the impact of Engine and Vehicle level parameters for reduction in Engine Oil Consumption for advanced emission architecture
2022-01-0713
03/29/2022
- Event
- Content
- Automotive industry has seen implementation of advanced emission regulations like BS-VI in India along with growing market demand for increased product performance and reduction in total cost of ownership. This has made the engine architecture more intricate leading to complex interaction among engine and vehicle level parameters. It poses a challenge to understand mechanism and underlying physics for achieving product attributes like increased power density, higher fluid economy and reduced oil consumption. The current paper focusses on reducing engine oil consumption across diverse duty cycles using simulation tools, vehicle data analytics and design of experiments. The contribution of oil consumption mechanisms viz. oil evaporation, oil throw and oil transport are identified across different loads and duty cycles patterns. Piston ring dynamics simulation has been used to identify critical piston and ring parameters impacting oil consumption through directional trends. Design of experiments was conducted in engine test cell environment to assess effect of system level parameters like combustion temperature, Intake Air Throttle (IAT) and Exhaust Throttle Valve (ETV) operation, intake manifold pressure on oil consumption. Vehicle testing is conducted, and the real time data analytics was used to identify correlation of vehicle duty cycle parameters like % idling, Thermal management operation, coolant temperature, etc. with measured oil consumption. Based on this analytical and experimental study the critical factors impacting oil consumption are identified. Results of interaction and main effects for individual factors are discussed. The parameters having weaker co-relations are also highlighted. The proposed solution is a combination of piston geometry features, ring geometry features, thermal management strategy, in-cylinder temperature and vehicle operational controls. The demonstration of final recipe of solution at vehicle level showed substantial improvement in oil consumption over baseline. The corresponding results for tractor and tipper applications are presented and future scope of improvement is also highlighted
- Citation
- Gautam, N., "Study the impact of Engine and Vehicle level parameters for reduction in Engine Oil Consumption for advanced emission architecture," SAE Technical Paper 2022-01-0713, 2022, .