This paper presents three methods for reduce thermal losses in the intake system with improvement of airflow and thermal protection. In the experiment are involved two patented devices conceived by the author and one PhD theme device: 1- Dynamic device for air transfer, 2-Integrated thermal deflector, and, 3-Advanced thermal protection. The tests were carried on different vehicle running in real traffic and in the Internal Combustion Engines Laboratory, within the specialization 'Road vehicle' belonging to the Faculty of Engineering Hunedoara, component of Politehnica University of Timisoara. The results have been processed and compared whit the ones obtained without these devices.
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