BorgWarner is launching a range of exhaust gas recirculation (EGR) coolers for commercial vehicles to support OEMs in meeting current and future emissions regulations.
The economical series of multi-platform coolers has a compact floating core and the design, unlike conventional solutions that are designed for specific applications, is modular and able to adapt to a wide range of engine sizes from 2.0- to 16.0-liter displacement.
“The new EGR solution offers high robustness against thermal fatigue and enhanced coolant distribution for durable performance even with minimum coolant flow, while reducing NOx emissions,” said Joe Fadool, president and general manager, BorgWarner emissions and thermal systems.
BorgWarner integrated a thermomechanical damper into the design to facilitate complete decoupling of the shell and inner core components to absorb longitudinal and angular differences for improved durability.
The damper also provides some initial extra cooling for the inlet gas to reduce thermal shock and allows better gas distribution to the tubes to resist thermal fatigue. In addition, cooling the damper and inlet gas box reduces the overall temperatures achieved, which in turn significantly lowers thermal stress.
When the system is operated at an exhaust gas temperature of 1,562°F (850°C), the inlet gas box temperature is kept below 392°F (200°C), compared to more than 1,292°F (700°C) without cooling. The advanced design also minimizes the effect of the engine transients over the EGR cooler’s durability.
“With lower production volumes and high durability requirements, the commercial vehicle segment needs an EGR solution that provides outstanding performance and reduces complexity at the same time.”
“Offering high flexibility and durability, our newly developed EGR coolers have already piqued the interest of several manufacturers that see the potential for a cost-effective solution to help meet increasingly stringent emissions regulations,” added Fadool.
August 4, 2017