Internal combustion engine apparatus, control method thereof, and vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorKazuhiro Ichimoto
Life of this patent
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Abstract
When a misfire occurs in any cylinder of an engine, an exhaust switching valve is closed to pass exhaust gas through an HC adsorbing section to a catalytic purifying section having a three-way catalyst (step S130). Thus, unburned fuel (HC) mixed in the exhaust gas due to a misfire of the engine can be adsorbed in the HC adsorbing section. Accordingly, unburned fuel (HC) due to a misfire after the start of the engine is completed can be prevented from being exhausted.
Claims7
An internal combustion engine apparatus having an internal combustion engine, the apparatus comprising:
- an exhaust gas purifying unit which is provided in an exhaust system of said internal combustion engine and which includes a purifying catalytic section having a purifying catalyst for purifying an exhaust gas;
- a fuel gas adsorbing section having a fuel gas adsorbent for adsorbing a fuel gas in the exhaust gas;
- and a passage switching section for switching between a first passage for passing the exhaust gas mainly to said purifying catalytic section and a second passage for passing all the exhaust gas through said fuel gas adsorbing section to said purifying catalytic section;
- a misfire judgment unit for judging whether or not a misfire occurs in any cylinder of said internal combustion engine;
- and
- an in-misfire switching control unit for controlling said passage switching section such that when said misfire judgment unit judges that a misfire occurs in any cylinder of said internal combustion engine, said passage switching section passes the exhaust gas to said second passage.
A vehicle comprising:
- an internal combustion engine for outputting driving power;
- an exhaust gas purifying unit which is located in an exhaust system of said internal combustion engine and which includes a purifying catalytic section having a purifying catalyst for purifying an exhaust gas;
- a fuel gas adsorbing section having a fuel gas adsorbent for adsorbing a fuel gas in the exhaust gas;
- and a passage switching section for switching between a first passage for passing the exhaust gas mainly to said purifying catalytic section and a second passage for passing all the exhaust gas through said fuel gas adsorbing section to said purifying catalytic section;
- a misfire judgment unit for judging whether or not a misfire occurs in any cylinder of said internal combustion engine;
- and
- an in-misfire switching control unit for controlling said passage switching section such that when said misfire judgment unit judges that a misfire occurs in any cylinder of said internal combustion engine, said passage switching section passes the exhaust gas to said second passage.
A control method of an internal combustion engine apparatus comprising an internal combustion engine;
- an exhaust gas purifying unit which is located in an exhaust system of said internal combustion engine and which includes a purifying catalytic section having a purifying catalyst for purifying an exhaust gas;
- a fuel gas adsorbing section having a fuel gas adsorbent for adsorbing a fuel gas in the exhaust gas;
- and a passage switching section for switching between a first passage for passing the exhaust gas mainly to said purifying catalytic section and a second passage for passing all the exhaust gas through said fuel gas adsorbing section to said purifying catalytic section,
- the control method controlling said passage switching section such that when a misfire occurs in any cylinder of said internal combustion engine, said passage switching section passes the exhaust gas to said second passage.
Dependencies are inferred from the claim text.