Control System for Internal Combustion Engine, and Control Method for Internal Combustion Engine
AssigneesToyoya Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Jidoshokki
InventorsTakekazu Ito, Makoto Sakaino
Life of this patent
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Abstract
In an exhaust passage, a pressure detection means is provided on the upstream side of a filter, and an exhaust throttle valve is provided on the downstream side of the filter. And, when the operational state of the internal combustion engine is a steady operational state (in a step S101), the opening amount of an exhaust throttle valve is controlled so that the upstream pressure detected by the pressure detection means becomes a constant value (in a step S103).
Claims9
1-9. (canceled)
A control system for an internal combustion engine, comprising:
- an exhaust passage of the internal combustion engine;
- a filter which is provided in the exhaust passage, and which collects particulate matter within the exhaust;
- a pressure detection device which detects an upstream side pressure, which is the pressure in the exhaust passage on the upstream side of the filter;
- an exhaust throttle valve provided in the exhaust passage on the downstream side of the filter;
- an a control device which, when an operational sate of the internal combustion engine is a steady operational state, controls an opening amount of the exhaust throttle valve so that the upstream side pressure detected by the pressure detection device becomes a constant value.
A control method for an internal combustion engine in which a filter which collects particulate matter within the exhaust is connected to an exhaust passage, comprising the steps of:
- detecting an upstream side pressure, which is the pressure in the exhaust passage on the upstream side of the filter;
- and
- when the operational state of the internal combustion engine is a steady operational state, controlling an opening amount of an exhaust throttle valve which is provided in the exhaust passage on the downstream side of the filter, so that the upstream side pressure becomes a constant value.
Dependencies are inferred from the claim text.