Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics

Child Classifications

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• F01N 2430/02 by cutting out a part of engine cylinders
• F01N 2430/04 by adding non-fuel substances to combustion air or fuel, e.g. additives
• F01N 2430/06 by varying fuel-air ratio, e.g. by enriching fuel-air mixture
• F01N 2430/08 by modifying ignition or injection timing
• F01N 2430/10 by modifying inlet or exhaust valve timing