Diesel Data: Automotive Repair

Central Venting System







Central Venting System

To prevent the gas that forms in the engine compartment or vehicle interior during battery charging from causing damage or posing a threat to health, the gas is discharged centrally through an opening on the top cover side of the battery.

- Make sure the central venting hose or tube is always secured on the battery.

- Make sure the central venting hose or tube is not pinched. Only then can battery be properly vented.

Newer generation batteries have a fine mesh flame trap at the central venting exit point. The flame trap is a round fiberglass mat approximately 15 mm wide and 2 mm thick that works like a valve. On the one hand, it allows the gas formed during battery charging to flow out and on the other hand, prevents the explosive gas in the battery from igniting.