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US 7,954,313 B2Granted
Exhaust cleaner for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsHirohito Hirata, Masaru Kakinohana, Masaya Ibe
Life of this patent
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Abstract
An exhaust purifying system for an internal combustion engine is provided with a plurality of DPFs (30a and 30b) branched and connected to an exhaust passage (15) for collecting particulate matter in an exhaust gas and an ozone supplier for supplying ozone to the upstream side of each of the plurality of DPFs (30a and 30b). The system respectively changes a ratio of a supply amount of the exhaust gas and a ratio of a supply amount of the ozone between the plurality of DPFs (30a and 30b).
Claims19
An exhaust purifying system for an internal combustion engine comprising:
- a plurality of particulate matter collecting devices branched and connected to an exhaust passage for collecting particulate matter in an exhaust gas;
- ozone supplying means for supplying ozone to the upstream side of each of said plurality of particulate matter collecting devices;
- and
- controlling means for changing a ratio of a supply amount of the exhaust gas and a ratio of a supply amount of the ozone between said plurality of particulate matter collecting devices.
1 more element
Dependencies are inferred from the claim text.