23. Internationales Stuttgarter Symposium

Automobil- und Motorentechnik

4. - 5. Juli 2023

Session: DEVELOPMENT METHODS | | 15:30 - 16:00

Carbon Footprint Assessment of Filter Products – Methodology for a Passenger Car Oil Filter Module

Pius Trautmann, MANN+HUMMEL GmbH

In the upcoming future the carbon footprint of a product will be a mandatory information for all components of a vehicle. In addition to the carbon footprint for the production and delivery, the equivalent CO2-emission during the usage phase can be an important part of the carbon footprint. The carbon footprint of the base materials and the manufacturing of the part can be determined by commercial available tools based on the weight. To gather needed information on the level of the sub- suppliers becomes more difficult as the number of involved deliverers increases. During the usage phase the equivalent emissions of a filter system are linked to the hydraulic power loss generated by the flow through the filter, the energy needed for the movement of the filter module in the vehicle and the carbon footprint of the serviced filter elements. The hydraulic power loss is calculated considering the pressure loss of the filter system and the flowrate. For this purpose the WLTC has been chosen to estimate oil flow rates out of the engine speed and oil temperatures and thereout the respective oil viscosities. The hydraulic power loss was then transferred into an equivalent CO2-emission to get the final carbon footprint. The carbon footprint of the usage phase of the oil module turned out to be more relevant as the value for the production and logistics. As a consequence, all measures to reduce the pressure loss of the system could contribute to reduce the carbon footprint of a vehicle.