Description
The main objective of the project is to develop two Exhaust Gas Recirculation (EGR) heat exchangers. They will cover the requirements that CO2 regulations impose, and at the same time, respond to several problems to which there is no solution in the current market: • Boiling failures and thermal shock caused by high temperatures in gasoline engines. The new system will solve this problem by maintaining high efficiencies, implying a specific design with innovative materials. • Loss durability against fouling for EGR generated in diesel engines at high pressure. The objective is to achieve an alternative tube with better performance compared to current systems. At the same time, this new solution will be better than existing products for performance with fouling. After several years of research, VALEO TERMICO aims to provide a product with high efficiency and durability, solving the problems of this technology for future applications.
Summary of project results
The main objective of the project is to develop two Exhaust Gas Recirculation (EGR) heat exchangers to cover the requirements that CO2 regulations impose, and at the same time, respond to several problems to which there is no solution in the current market: • Boiling failures and thermal shock caused by high temperatures in gasoline engines. The new system solves this problem by maintaining high efficiency, implying a specific design with innovative materials. • Loss durability against fouling for EGR generated in diesel engines at high pressure. The objective is to achieve an alternative tube with better performance compared to current systems. The company has designed tubular heat exchanger tubes for diesel application which minimizes the effect of fouling. The new products designed also guarantee an optimal level of performance compared to previously existing technologies. To achieve this design, the company has developed a large number of variants, assessing its functionality by fluid-dynamic simulations. The selected option has been validated in engine bench using a representative cycle of use in the vehicle fouling. For gasoline application it was developed using a new material, different from that had been used in the most extensive diesel application. To do this, the company has evaluated the mechanical properties of stainless steels, resulting in the selection of a ferritic material.
Summary of bilateral results