What unique feature is present in the EGR cooler setup of the GHG17 DD13 engine?

The unique feature of the GHG17 DD13 engine's EGR cooler setup is the one-piece EGR cooler with an integrated coolant collector. This design simplifies the cooling system by combining the functionalities of the EGR cooler and the coolant collector into a single unit. This integration helps to reduce the number of components, leading to a more compact installation and potentially improving reliability due to fewer connection points that could leak or fail over time.

Moreover, having a one-piece design can enhance thermal efficiency, as it ensures optimal heat transfer between the EGR gases and the coolant. This setup is particularly beneficial in meeting stringent emissions regulations while maintaining engine performance. The seamless integration also aids in easier maintenance and serviceability compared to other designs that might have additional parts or require more complex assembly processes.