Faurecia says it has equipped the Hyundai IONIQ Hybrid and plug-in Hybrid with its compact Exhaust Heat Recovery System (EHRS), offering up to 3 % fuel savings, as measured on US EPA Federal Test Procedure (FTP20).
Exhaust heat is recovered by a gas/fluid heat exchanger integrated in the exhaust line. Up to 3 kW of energy is transferred to the engine cooling system and is then used to warm the engine and cabin.
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This allows the hybrid vehicle to operate more often in electric mode, proving fuel economy and reducing CO2 emissions maintains Faurecia. Moreover, the carmaker can downsize or eliminate costly electrical auxiliary cabin heaters.
Once the targeted coolant temperature has been reached, an actuated valve enables the system to be by-passed in order to avoid overheating the engine.
The Faurecia compact EHRS weighs less than 3kg allowing installation in a position close to the engine for maximum heat recovery, with the supplier claiming it brings a reduction in fuel consumption of up to 7% due to faster engine warm-up and increased use of the electric mode.
Additionally, the technology is eligible for CO2 off-cycle credits of 1.5 g/mile in the US.
Faurecia has more than 10 years’ experience with energy recovery systems, having introduced its first generation of exhaust heat recovery systems in 2006.
It is currently developing the next generation systems and has co-development projects with its customers for its Exhaust Heat Power Generation (EHPG) system and Thermo-Electric Generator (TEG).
These systems make it possible to convert exhaust heat into mechanical or electrical power and are expected to be on the market from 2020.
