Engine exhaust system

Claim 1

An engine exhaust system for an internal combustion engine including an intake manifold and an exhaust gas outlet, the improvement comprising: a scrubber tank disposed to hold a predetermined level of water, the scrubber tank including a water inlet, a gas inlet disposed above the water level and disposed to receive combustion gases from the exhaust gas outlet of the engine, and a gas outlet disposed above the water level; a diffuser tube attached to the gas inlet and having a lower discharge end disposed within the scrubber tank below the water level such that combustion gases exiting the discharge end pass upwardly through the water to the gas outlet; a moisture trap attached to the gas outlet, the moisture trap including a central chamber having a return line disposed in fluid communication with the intake manifold of the engine, and fine mesh screen cones disposed below and above the central chamber such that gases moving upwardly through the moisture trap come in direct contact with the mesh cones; and a filter attached to and disposed above the moisture trap in direct fluid communication therewith, the filter including an activated charcoal element through which the gases travel before exiting the filter into the atmosphere.