What type of EGR/coolant collector is found on the Gen 5 DD16's?

In the Gen 5 DD16 engines, the design features an external crossover pipe style for the exhaust gas recirculation (EGR) and coolant collector system. This design allows for effective management of EGR, facilitating the recirculation of exhaust gases back into the combustion process to reduce emissions. The use of an external crossover pipe helps maintain efficient airflow and heat exchange, playing a crucial role in engine performance and efficiency.

The external crossover pipe design is advantageous as it enables easier maintenance and better thermal management compared to more integrated solutions. This design choice reflects a balance between innovative engineering and straightforward servicing, ensuring that manufacturers can facilitate quicker repairs and modifications when necessary.

In contrast, other designs, such as fixed internal pipe styles or more complex multi-piece systems, may present limitations in terms of maintenance access or may not provide the same level of efficiency as the external style employed in the Gen 5 DD16. The integrated cooler with coolant channels, while effective in certain contexts, does not align with the specific engineering structure of the DD16, hence reinforcing the correct selection of the external crossover pipe style.