Co₂ + Hc + H₂O

H₂0 + CO₂ + Nitrogen

CO + HC + NOx

Pb + CO₂ + Nox

Muffler and air cleaner

Controller and air cleaner

Feed pump and air cleaner

Engine breather and air cleaner

Control the noise

Control the emission

Control the temperature

Control the fuel consumption

Reduce Nox

Reduce CO

Reduce CO₂

Reduce SO₂

Diesel pressure filter

Diesel primary filter

Diesel particulate filter

Direct particulate filter