The Development and Optimization of Internal Combustion Engine Cooling System Test Rig with Recirculation System for Enhancement of Radiator Effectiveness

Effective control of engine temperature during the internal combustion process is crucial for engine performance and durability. This project aims to enhance heat dissipation in internal combustion engines (ICE) by developing and optimizing a cooling system test rig with recirculation system. The main objective is to maintain engine temperatures between 90 °C and 105 °C, preventing overheating. The literature review focuses on the development of ICE cooling systems and recirculation systems, highlighting key components such as radiators, radiator caps, expansion tanks, thermostats, water pumps, water jackets, and radiator fans. The methodology involves reconstructing the test rig, calibrating devices, and conducting experiments to assess performance. Modification includes changing the recirculation path to improve radiator effectiveness. Experiments evaluate the impact of engine speed and recirculation percentage on cooling performance. Results show that recirculation increases radiator effectiveness, especially at lower engine speeds. Experiment 1 indicates optimal radiator performance at 10 LPM (0.307), while Experiment 2 demonstrates improved effectiveness at 1000 rpm (ranging from 0.307 to 0.357). The findings emphasize the importance of effective engine cooling systems in maintaining optimal temperatures, thereby extending engine lifespan and reducing the size.