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| Regulation and Control Effect of ISG Motor on Exhaust Waste Heat Recovery, Storage and Utilization of a Diesel Engine |
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| Key Words:heavy duty diesel engine ISG motor waste heat recovery coupling effect overall efficiency |
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| Hits: 2700 |
| Download times: 1997 |
| Abstract:To optimize the exhaust waste heat recovery-storage-utilization of a diesel engine, an energy comprehensive utilization composed of the Rankine cycle waste heat recovery system, the energy storage battery as well as the electric cooling system and an integrated starter generator(ISG) motor for energy utilization was proposed. On the basis of the balance between charge and discharge, the operation and management of the engine as well as the waste heat recovering-storing-utilizing process could be realized by adjusting the ISG motor power in order to obtain the maximum overall efficiency of the system. Based on the GT-Suite simulation platform of engine and vehicle, the influence of the ISG motor power on the engine, Rankine cycle, battery and electric cooling system as well as the coupling relationship between the systems was studied. From the view point of overall efficiency, the effect law of ISG motor was studied, and the optimal control strategy of ISG motor was presented. Results indicate that, the ISG motor could optize the overall efficiency of the engine and the waste heat recovery-storage-utiliztion system, while maintaining the balance of charge and discharge of the ISG motor, so that the vehicle’s fuel per hundred kilometers could be reduced by 9.8%~11.7% on the driving cycle. |
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