Inerting System, Basic Function - GF86.10-P-2003A

Model all (CAR) 

with code 2U8 (Alternative refrigerant) 

with gasoline engine 

Arrangement on firewall 

Courtesy of MERCEDES-BENZ USA

Arrangement behind fender 

Courtesy of MERCEDES-BENZ USA

Depending on the vehicle model, the gas cylinder (1) with refrigerant inerting squib (4) is located on the firewall or behind the fender.

Depending on the vehicle model and engine variant, multiple nozzles (3) can be installed in the engine compartment.

Task 

Inert gas (argon) is stored in the gas cylinder (1). Where the refrigerant inerting squib is triggered, the inert gas (argon) flows out of the gas cylinder (1) via the piping (2) and nozzle(s) (3) into the engine compartment. Via the targeted release of inert gas (argon) at the corresponding hot spots, a possible ignition of the refrigerant/air mixture can be counteracted.

The Supplemental Restraint System (SRS) control unit actuates the refrigerant inerting squib directly.