Exhausts

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Across
  1. 4. which gas is reduced in concentration by the nox catalyst
  2. 6. Used to reduce range of engine noise
  3. 7. Converts harmful exhaust gasses into less harmful gasses
Down
  1. 1. Chemical name for fuel
  2. 2. Ideal combustion produces carbon dioxide and what
  3. 3. Air contains oxygen and what
  4. 5. The lambda sensor measures the concentration of what
  5. 8. One of the main particles the particle filter prevents from leaving the exhaust system