Browse Publications Technical Papers 2020-28-0012
2020-04-30

Assessment of Engine cooling system Performance using 1-D/3-D simulation approach for Engine transient Cycle 2020-28-0012

The advent of new non-road transient cycle for upcoming off-road emission norms in India requires attention on engine thermal management also. A simulation prediction capability is evaluated assessing engine coolant circuit behavior in 3.3 liter turbocharged engine. The cylinder head and block jackets are modeled in Hypermesh acusolve for generating pressure drop and flow distribution study. A complete engine cooling circuit is modeled using Ricardo Ignite software and calibrated with experimental results for steady state as well as transient modes on various engine speeds. Once model calibration is established within acceptable correlation limit of maximum 10% deviation, it is coupled with non road transient cycle simulated in Ricardo Ignite. The whole drive cycle simulated flow conditions line coolant temperature, flow rate and radiator heat dissipation is compared with experimental measured values. The correlation is also very below acceptable limit. Now pump speed, thermostat opening setting temperature and radiator sizes are parameterized and an optimum combination is finalized which is verified on engine test bed also. The interest of this work is to evaluate the feasibility of this technique on a well known system in order to gain confidence and expertise for future and ongoing similar engine development programs.

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