![]() The system also engages when the vehicle is placed in reverse, say for backing into the fire station. Once the set time has elapsed, the diverter reroutes the exhaust stream from the filter and back to its normal route through the muffler and out the exhaust pipe. This cycle time can be adjusted - anywhere between 10 and 99 seconds - to allow sufficient time for the vehicle to safely leave the station. The system uses an electronic control device that automatically diverts the vehicle's exhaust flow from its normal path and through the filter after the vehicle starts. This second type of direct-capture system consists of a specialized filter and diverter that are mechanically installed alongside the vehicle's exhaust system. And they don't allow for moving apparatus around within station.ĭirect-source capture system (vehicle-mounted filtration) ![]() They also require that station personnel have competency using the system and comply with operating procedures. The disadvantages to these systems include replacement costs for hoses and retracting gear that become damaged. And the hoses and equipment provide visual reminder to station personnel to hazards of diesel engine emissions. The advantages of these systems is that diesel engine emissions are captured before they enter the station.
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