1.2 The dump truck pollutes the air

Issue:  КMine dump trucks transport ore from a mining quarry. Ore is a loosened soil mass. The problem is that the dump trucks' exhaust fumes pollute the air in the quarry with soot particles and carbon monoxide.The emission is particularly high when a loaded dump truck climbs from the quarry.

Attempts have been made to solve this problem by providing the exhaust pipe of a dump truck with filters. However, the cost of such filters is high, they need frequent cleaning, which leads to downtime of dump trucks.

Question:  How can  exhaust gases be filtered out without complicating the truck design and operation?