Control device for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorToru Uenishi
Life of this patent
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Abstract
An internal combustion engine is provided with an engine body, a housing provided in an exhaust passage of the engine body, a filter held inside the housing and trapping PM in the exhaust, and a microwave device for microwaving the inside of the housing. A control device for the internal combustion engine is configured to control the microwave device when microwaving the inside of the housing to heat the PM so that an amplitude of the microwaves becomes smaller when the amount of PM deposition at the filter is large compared to when it is small.
Claims6
A control device for an internal combustion engine,
- the internal combustion engine comprising:
- an engine body;
- a housing provided in an exhaust passage of the engine body, the exhaust passage for discharging an exhaust;
- a filter held inside the housing and configured to trap particulate matter (PM) in the exhaust;
- and
- a microwave device configured to microwave the inside of the housing, wherein
- in response to an amount of PM deposition of the PM in the filter being less than a predetermined amount of deposition while microwaving the inside of the housing to heat the PM, the control device is configured to change a frequency of microwaves generated by the microwave device so that an object able to exchange heat with the PM inside the housing is heated.
A control device for an internal combustion engine,
- the internal combustion engine comprising:
- an engine body;
- a housing provided in an exhaust passage of the engine body, the exhaust passage for discharging an exhaust;
- a filter held inside the housing and configured to trap particulate matter (PM) in the exhaust;
- and
- a microwave device configured to microwave the inside of the housing, wherein,
- in response to an amount of PM deposition of the PM in the filter being less than a predetermined amount of deposition while microwaving the inside of the housing to heat the PM, the control device is configured to increase a frequency of microwaves generated by the microwave device more than when the amount of PM deposition in the filter is greater than or equal to the predetermined amount of deposition.
Dependencies are inferred from the claim text.